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• Most useful free .NET libraries?

  - by Binoj Antony

  I have used a lot of free .NET libraries, some from Microsoft itself! Which ones have you found the most useful? Dependency Injection/Inversion of Control Unity Framework - Microsoft StructureMap - Jeremy Miller Castle Windsor NInject Spring Framework Autofac Managed Extensibility Framework Logging Logging Application Block - Microsoft Log4Net - Apache Error Logging Modules and Handlers(ELMAH) NLog Compression SharpZipLib DotNetZip YUI Compressor (CSS and JS compression/minification) AjaxMinifier (in other downloads) (JS compression. Also includes MSBuild task) Ajax Ajax Control Toolkit - Microsoft AJAXNet Pro Data Mapper XmlDataMapper AutoMapper ORM NHibernate Castle ActiveRecord Subsonic XmlDataMapper Charting/Graphics Microsoft Chart Controls for ASP.NET 3.5 SP1 Microsoft Chart Controls for Winforms ZedGraph Charting NPlot - Charting for ASP.NET and WinForms PDF Creators/Generators PDFsharp iTextSharp Unit Testing/Mocking NUnit Rhino Mocks Moq TypeMock.Net xUnit.net mbUnit Machine.Specifications Automated Web Testing Selenium Watin URL Rewriting url rewriter UrlRewriting.Net Url Rewriter and Reverse Proxy - Managed Fusion Controls Krypton - Free winform controls Source Grid - A Grid control Devexpress - free controls Unclassified CSLA Framework - Business Objects Framework AForge.net - AI, computer vision, genetic algorithms, machine learning Enterprise Library 4.1 - Logging, Exception Management, Validation, Policy Injection File helpers library C5 Collections - Collections for .NET Quartz.NET - Enterprise Job Scheduler for .NET Platform MiscUtil - Utilities by Jon Skeet Lucene.net - Text indexing and searching Json.NET - Linq over JSON Flee - expression evaluator PostSharp - AOP IKVM - brings the extensive world of Java libraries to .NET. Title of the question taken from here. [EDIT] Please provide links to these free libraries as well. Once we have a huge list of this, it can be arranged in categories! Please do not mention .NET Applications/EXEs here.

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• Json.Net Issues: StackOverflowException is thrown when serialising circular dependent ISerializable object with ReferenceLoopHandling.Ignore

  - by keyr

  I have a legacy application that used binary serialisation to persist the data. Now we wanted to use Json.net 4.5 to serialise the data without much changes to the existing classes. Things were working nice till we hit a circular dependent class. Is there any workaround to solve this problem? Sample code as shown below [Serializable] class Department : ISerializable { public Employee Manager { get; set; } public string Name { get; set; } public Department() { } public Department( SerializationInfo info, StreamingContext context ) { Manager = ( Employee )info.GetValue( "Manager", typeof( Employee ) ); Name = ( string )info.GetValue( "Name", typeof( string ) ); } public void GetObjectData( SerializationInfo info, StreamingContext context ) { info.AddValue( "Manager", Manager ); info.AddValue( "Name", Name ); } } [Serializable] class Employee : ISerializable { [NonSerialized] //This does not work [XmlIgnore]//This does not work private Department mDepartment; public Department Department { get { return mDepartment; } set { mDepartment = value; } } public string Name { get; set; } public Employee() { } public Employee( SerializationInfo info, StreamingContext context ) { Department = ( Department )info.GetValue( "Department", typeof( Department ) ); Name = ( string )info.GetValue( "Name", typeof( string ) ); } public void GetObjectData( SerializationInfo info, StreamingContext context ) { info.AddValue( "Department", Department ); info.AddValue( "Name", Name ); } } And the test code Department department = new Department(); department.Name = "Dept1"; Employee emp1 = new Employee { Name = "Emp1", Department = department }; department.Manager = emp1; Employee emp2 = new Employee() { Name = "Emp2", Department = department }; IList<Employee> employees = new List<Employee>(); employees.Add( emp1 ); employees.Add( emp2 ); var memoryStream = new MemoryStream(); var formatter = new BinaryFormatter(); formatter.Serialize( memoryStream, employees ); memoryStream.Seek( 0, SeekOrigin.Begin ); IList<Employee> deserialisedEmployees = formatter.Deserialize( memoryStream ) as IList<Employee>; //Works nicely JsonSerializerSettings jsonSS= new JsonSerializerSettings(); jsonSS.TypeNameHandling = TypeNameHandling.Objects; jsonSS.TypeNameAssemblyFormat = FormatterAssemblyStyle.Full; jsonSS.Formatting = Formatting.Indented; jsonSS.ReferenceLoopHandling = ReferenceLoopHandling.Ignore; //This is not working!! //jsonSS.ReferenceLoopHandling = ReferenceLoopHandling.Serialize; //This is also not working!! jsonSS.PreserveReferencesHandling = PreserveReferencesHandling.All; string jsonAll = JsonConvert.SerializeObject( employees, jsonSS ); //Throws stackoverflow exception Edit1: The issue has been reported to Json (http://json.codeplex.com/workitem/23668)

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• Asp.Net MVC EnableClientValidation doesnt work.

  - by Farrell

  I want as well as Client Side Validation as Server Side Validation. I realized this as the following: Model: ( The model has a DataModel(dbml) which contains the Test class ) namespace MyProject.TestProject { [MetadataType(typeof(TestMetaData))] public partial class Test { } public class TestMetaData { [Required(ErrorMessage="Please enter a name.")] [StringLength(50)] public string Name { get; set; } } } Controller is nothing special. The View: <% Html.EnableClientValidation(); %> <% using (Ajax.BeginForm("Index", "Test", FormMethod.Post, new AjaxOptions {}, new { enctype = "multipart/form-data" })) {%> <%= Html.AntiForgeryToken()%> <fieldset> <legend>Widget Omschrijving</legend> <div> <%= Html.LabelFor(Model => Model.Name) %> <%= Html.TextBoxFor(Model => Model.Name) %> <%= Html.ValidationMessageFor(Model => Model.Name) %> </div> </fieldset> <div> <input type="submit" value="Save" /> </div> <% } %> To make this all work I added also references to js files: <script src="../../Scripts/MicrosoftAjax.js" type="text/javascript"></script> <script src="../../Scripts/MicrosoftMvcAjax.js" type="text/javascript"></script> <script src="../../Scripts/MicrosoftMvcValidation.js" type="text/javascript"></script> <script src="../../Scripts/jquery-1.4.1.min.js" type="text/javascript"></script> Eventually it has to work, but it doesnt work 100%: It does validates with no page refresh after pressing the button. It also does "half" Client Side Validation. Only when you type some text into the textbox and then backspace the typed text. The Client Side Validation appears. But when I try this by tapping between controls there's no Client Side Validation. Do I miss some reference or something? (I use Asp.Net MVC 2 RTM)

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• ASP.NET MVC ViewModel Pattern

  - by Omu

  EDIT: I made something much better to fill and read data from a view using ViewModels, called it ValueInjecter. http://valueinjecter.codeplex.com/documentation using the ViewModel to store the mapping logic was not such a good idea because there was repetition and SRP violation, but now with the ValueInjecter I have clean ViewModels and dry mapping code I made a ViewModel pattern for editing stuff in asp.net mvc this pattern is usefull when you have to make a form for editing an entity and you have to put on the form some dropdowns for the user to choose some values public class OrganisationViewModel { //paramterless constructor required, cuz we are gonna get an OrganisationViewModel object from the form in the post save method public OrganisationViewModel() : this(new Organisation()) {} public OrganisationViewModel(Organisation o) { Organisation = o; Country = new SelectList(LookupFacade.Country.GetAll(), "ID", "Description", CountryKey); } //that's the Type for whom i create the viewmodel public Organisation Organisation { get; set; } #region DropDowns //for each dropdown i have a int? Key that stores the selected value public IEnumerable<SelectListItem> Country { get; set; } public int? CountryKey { get { if (Organisation.Country != null) { return Organisation.Country.ID; } return null; } set { if (value.HasValue) { Organisation.Country = LookupFacade.Country.Get(value.Value); } } } #endregion } and that's how i use it public ViewResult Edit(int id) { var model = new OrganisationViewModel(organisationRepository.Get(id)); return View(model); } [AcceptVerbs(HttpVerbs.Post)] public ActionResult Edit(OrganisationViewModel model) { organisationRepository.SaveOrUpdate(model.Organisation); return RedirectToAction("Index"); } and the markup <p> <label for="Name"> Name:</label> <%= Html.Hidden("Organisation.ID", Model.Organisation.ID)%> <%= Html.TextBox("Organisation.Name", Model.Organisation.Name)%> <%= Html.ValidationMessage("Organisation.Name", "*")%> </p> <p> ... <label for="CountryKey"> Country:</label> <%= Html.DropDownList("CountryKey", Model.Country, "please select") %> <%= Html.ValidationMessage("CountryKey", "*") %> </p> so tell me what you think about it

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• asp.net CustomValidator never fires OnServerValidate

  - by Bryce Fischer

  I have the following ASP page: <asp:Content ID="Content2" ContentPlaceHolderID="ShellContent" runat="server"> <form runat="server" id="AddNewNoteForm" method="post""> <fieldset id="NoteContainer"> <legend>Add New Note</legend> <asp:ValidationSummary ID="ValidationSummary1" runat="server" /> <div class="ctrlHolder"> <asp:Label ID="LabelNoteDate" runat="server" Text="Note Date" AssociatedControlID="NoteDateTextBox"></asp:Label> <asp:TextBox ID="NoteDateTextBox" runat="server" class="textInput" CausesValidation="True" ></asp:TextBox> <asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="CustomValidator" ControlToValidate="NoteDateTextBox" OnServerValidate="CustomValidator1_ServerValidate" Display="Dynamic" >*</asp:CustomValidator> </div> <div class="ctrlHolder"> <asp:Label ID="LabelNoteText" AssociatedControlID="NoteTextTextBox" runat="server" Text="Note"></asp:Label> <asp:TextBox ID="NoteTextTextBox" runat="server" Height="102px" TextMode="MultiLine" class="textInput" ></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="Note Text is Required" ControlToValidate="NoteTextTextBox">*</asp:RequiredFieldValidator> </div> <div class="buttonHolder"> <asp:Button ID="OkButton" runat="server" Text="Add New Note" CssClass="primaryAction" onclick="OkButton_Click"/> <asp:HyperLink ID="HyperLink1" runat="server">Cancel</asp:HyperLink> </div> </fieldset> </form> </asp:Content> and the following code behind for the CustomValidator1_ServerValidate() method: protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args) { if (string.IsNullOrEmpty(args.Value.Trim())) { args.IsValid = false; CustomValidator1.ErrorMessage = "Note Date is Required!"; return; } DateTime testDate; if (DateTime.TryParse(args.Value, out testDate)) { args.IsValid = true; CustomValidator1.ErrorMessage = "Invalid Date!"; } } It never seems to fail validation no matter what I put in the text box... Should mention this is ASP.NET 2.0

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• Some questions about writing on ASP.NET response stream

  - by vtortola

  Hi, I'm making tests with ASP.NET HttpHandler for download a file writting directly on the response stream, and I'm not pretty sure about the way I'm doing it. This is a example method, in the future the file could be stored in a BLOB in the database: public void GetFile(HttpResponse response) { String fileName = "example.iso"; response.ClearHeaders(); response.ClearContent(); response.ContentType = "application/octet-stream"; response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName); using (FileStream fs = new FileStream(Path.Combine(HttpContext.Current.Server.MapPath("~/App_Data"), fileName), FileMode.Open)) { Byte[] buffer = new Byte[4096]; Int32 readed = 0; while ((readed = fs.Read(buffer, 0, buffer.Length)) > 0) { response.OutputStream.Write(buffer, 0, readed); response.Flush(); } } } But, I'm not sure if this is correct or there is a better way to do it. My questions are: When I open the url with the browser, appears the "Save File" dialog... but it seems like the server has started already to push data into the stream before I click "Save", is that normal? If I remove the line"response.Flush()", when I open the url with the browser, ... I see how the web server is pushing data but the "Save File" dialog doesn't come up, (or at least not in a reasonable time fashion) why? When I open the url with a WebRequest object, I see that the HttpResponse.ContentLength is "-1", although I can read the stream and get the file. What is the meaning of -1? When is HttpResponse.ContentLength going to show the length of the response? For example, I have a method that retrieves a big xml compresed with deflate as a binary stream, but in that case... when I access it with a WebRequest, in the HttpResponse I can actually see the ContentLength with the length of the stream, why? What is the optimal length for the Byte[] array that I use as buffer for optimal performance in a web server? I've read that is between 4K and 8K... but which factors should I consider to make the correct decision. Does this method bloat the IIS or client memory usage? or is it actually buffering the transference correctly? Sorry for so many questions, I'm pretty new in web development :P Cheers.

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• ASP.NET MVC 2 actionlink breaking after migration from MVC version 1

  - by thermal7

  Hi, I am migrating my application from asp.net mvc to mvc version 2 and am having the following issue. I have paging links << < that I include in each page. Like so: <% Html.RenderPartial("PagingControl", Model); %> They exist in an ascx file as follows. <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<BankingDB.Controllers.Utility.IPagedSortedObject>" %> <div class="paging"> <div class="previous-paging"> <!- error!! -><%= Model.HasPreviousPage ? Html.ActionLink("<<", "Index", Model.buildParams(1)) : "<<"%> <%= Model.HasPreviousPage ? Html.ActionLink("<", "Index", Model.buildParams(Model.PreviousPageIndex)) : "<"%> </div> <div class="paging-details"> Showing records <%= Model.BaseRecordIndex %> to <%= Model.MaxRecordIndex %> of <%= Model.TotalRecordCount %> </div> <div class="next-paging"> <%= Model.HasNextPage ? Html.ActionLink(">", "Index", Model.buildParams(Model.NextPageIndex)) : ">"%> <%= Model.HasNextPage ? Html.ActionLink(">>", "Index", Model.buildParams(Model.PageCount)) : ">>"%> </div> </div> When I try to access the page I get the error: CS0173: Type of conditional expression cannot be determined because there is no implicit conversion between 'System.Web.Mvc.MvcHtmlString' and 'string' The error is marked above and appears to be with the action link. Including the controller name doesn't help. Any ideas?

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• ASP.NET MVC, Webform hybrid

  - by Greg Ogle

  We (me and my team) have a ASP.NET MVC application and we are integrating a page or two that are Web Forms. We are trying to reuse the Master Page from our MVC part of the app in the WebForms part. We have found a way of rendering an MVC partial view in web forms, which works great, until we try and do a postback, which is the reason for using a WebForm. The Error: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. The Code to render the partial view from a WebForm (credited to "How to include a partial view inside a webform"): public static class WebFormMVCUtil { public static void RenderPartial(string partialName, object model) { //get a wrapper for the legacy WebForm context var httpCtx = new HttpContextWrapper(System.Web.HttpContext.Current); //create a mock route that points to the empty controller var rt = new RouteData(); rt.Values.Add("controller", "WebFormController"); //create a controller context for the route and http context var ctx = new ControllerContext( new RequestContext(httpCtx, rt), new WebFormController()); //find the partial view using the viewengine var view = ViewEngines.Engines.FindPartialView(ctx, partialName).View; //create a view context and assign the model var vctx = new ViewContext(ctx, view, new ViewDataDictionary { Model = model }, new TempDataDictionary()); //ERROR OCCURS ON THIS LINE view.Render(vctx, System.Web.HttpContext.Current.Response.Output); } } My only experience with this error is in context of a web farm, which is not the case. Also, I understand that the machine key is used for decrypting the ViewState. Any information on how to diagnose this issue would be appreciated. A Work-around: So far the work-around is to move the header content to a PartialView, then use an AJAX call to call a page with just the Partial View from the WebForms, and then using the PartialView directly on the MVC Views. Also, we are still able to share non-tech-specific parts of the Master Page, i.e. anything that is not MVC specific. Still yet, this is not an ideal solution, a server-side solution is still desired. Also, this solutino has issues when working with controls that have more sophisticated controls, using JavaScript, particularly dynamically generated script as used by 3rd party controls.

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• Creating meaningful routes in wizard style ASP.NET MVC form

  - by R0MANARMY

  I apologize in advance for a long question, figured better have a bit more information than not enough. I'm working on an application with a fairly complex form (~100 fields on it). In order to make the UI a little more presentable the fields are organized into regions and split across multiple (~10) tabs (not unlike this, but each tab does a submit/redirect to next tab). This large input form can also be in one of 3 views (read only, editable, print friendly). The form represents a large domain object (let's call it Foo). I have a controller for said domain object (FooController). It makes sense to me to have the controller be responsible for all the CRUD related operations. Here are the problems I'm having trouble figuring out. Goals: I'd like to keep to conventions so that Foo/Create creates a new record Foo/Delete deletes a record Foo/Edit/{foo_id} takes you to the first tab of the form ...etc I'd like to be able to not repeat the data access code such that I can have Foo/Edit/{foo_id}/tab1 Foo/View/{foo_id}/tab1 Foo/Print/{foo_id}tab1 ...etc use the same data access code to get the data and just specify which view to use to render it. My current implementation has a massive FooController with Create, Delete, Tab1, Tab2, etc actions. Tab actions are split out into separate files for organization (using partial classes, which may or may not be abuse of partial classes). Problem I'm running into is how to organize my controller(s) and routes to make that happen. I have the default route {controller}/{action}/{id} Which handles goal 1 properly but doesn't quite play nice with goal 2. I tried to address goal 2 by defining extra routes like so: routes.MapRoute( "FooEdit", "Foo/Edit/{id}/{action}", new { controller = "Foo", action = "Tab1", mode = "Edit", id = (string)null } ); routes.MapRoute( "FooView", "Foo/View/{id}/{action}", new { controller = "Foo", action = "Tab1", mode = "View", id = (string)null } ); routes.MapRoute( "FooPrint", "Foo/Print/{id}/{action}", new { controller = "Foo", action = "Tab1", mode = "Print", id = (string)null } ); However defining these extra routes causes the Url.Action to generate routs like Foo/Edit/Create instead of Foo/Create. That leads me to believe I designed something very very wrong, but this is my first attempt an asp.net mvc project and I don't know any better. Any advice with this particular situation would be awesome, but feedback on design in similar projects is welcome.

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• JQuery timer plugin on ASP.NET MVC Page button click

  - by Rita

  Hi I have an ASP.NET MVC Page with a button called "Start Live Meeting". When the User clicks on this button, it calls a controller method called "StartLiveMeeting" that returns a string. If the controller returns empty string, then i want the Timer to call the Controller method until it returns the string. I am using jquery.timer.js plugin ( http://plugins.jquery.com/files/jquery.timers-1.2.js.txt ) On the button click, the controller method is being called. But Timer is not initiating. I have specified 5sec to call the controller method. I appreciate your responses. Code on ASPX Page: //When "Start Meeting" button is clicked, if it doesn’t return empty string, Display that text and Stop Timer. Else call the Timer in every 5 sec and call the StartLiveMeeting Controller method. $("#btnStartMeeting").click(function() { var lM = loadLiveMeeting(); if (lM == "") { $("#btnStartMeeting").oneTime("5s", function() { }); } else { $("#btnStartMeeting").stopTime("hide"); } return false; }); function loadLiveMeeting() { $("#divConnectToLive").load('<%= Url.Action("StartLiveMeeting") %>', {}, function(responseText, status) { return responseText; }); } <asp:Content ID="Content2" ContentPlaceHolderID="cphMain" runat="server"> <div id="divStartMeetingButton"><input id="btnStartMeeting" type="submit" value="Start Meeting" /> </div> <div id = "divConnectToLive"> <div id="loading" style="visibility:hidden"> <img src="../../img/MedInfo/ajax_Connecting.gif" alt="Loading..." /> </div> </div> Controller Method: [HttpPost] public string StartLiveMeeting() { int intCM_Id = ((CustomerMaster)Session["CurrentUser"]).CM_Id ; var activeMeetingReq = (from m in miEntity.MeetingRequest where m.CustomerMaster.CM_Id == intCM_Id && m.Active == true select m); if (activeMeetingReq.Count() > 0) { MeetingRequest meetingReq = activeMeetingReq.First(); return "<a href='" + meetingReq.URI + "'>" + "Connect to Live Meeting</a>"; } else { return ""; } }

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• How do you 'clone' WebControls in C# .NET ?

  - by Adz

  My basic question is, in .NET, how do I clone WebControls? I would like to build a custom tag, which can produce multiple copies of its children. Ultimately I intend to build a tag similar to in JSP/Struts. But the first hurdle I have is the ability to duplicate/clone the contents of a control. Consider this rather contrived example; <custom:duplicate count="2"> <div> <p>Some html</p> <asp:TextBox id="tb1" runat="server" /> </div> </custom:duplicate> The HTML markup which is output would be something like, <div> <p>Some html</p> <input type="text" id="tb1" /> </div> <div> <p>Some html</p> <input type="text" id="tb1" /> </div> Note: I know i have the id duplicated, I can come up with a solution to that later! So what we would have is my custom control with 3 children (I think) - a literal control, a TextBox control, and another literal control. In this example I have said 'count=2' so what the control should do is output/render its children twice. What I would hope to do is write some "OnInit" code which does something like: List<WebControl> clones; for(int i=1; i<count; i++) { foreach(WebControl c in Controls) { WebControl clone = c.Clone(); clones.Add(clone); } } Controls.AddRange(clones); However, as far as I can tell, WebControls do not implement ICloneable, so its not possible to clone them in this way. Any ideas how I can clone WebControls?

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• ASP.NET 2.0 files work in one folder, but NOT in another

  - by Steve

  I am about to leap of a building. I have created an app for a client and all the files are in a folder on their D drive. Now it is time to go production, so I copied all my files and folders to their excisting classic asp folder on the same drive. BUT NOTHING WORKS. The only difference I can see is that DEV does not require HTTPS like the production site. I also made sure all the permissions are the same on both folder. I made sure that the GAC has read rights using the aspnet_regiis tool. I am at the end of my debug knowlegde, could someone please help me out. Here are the error messages I get from the application event log. Failed to initialize the AppDomain:/LM/W3SVC/3/Root Exception: System.Configuration.ConfigurationErrorsException Message: Exception of type 'System.Configuration.ConfigurationErrorsException' was thrown. StackTrace: at System.Web.Configuration.ErrorRuntimeConfig.ErrorConfigRecord.System.Configuration.Internal.IInternalConfigRecord.GetLkgSection(String configKey) at System.Web.Configuration.RuntimeConfigLKG.GetSectionObject(String sectionName) at System.Web.Configuration.RuntimeConfig.GetSection(String sectionName, Type type, ResultsIndex index) at System.Web.Configuration.RuntimeConfig.get_HostingEnvironment() at System.Web.Hosting.HostingEnvironment.StartMonitoringForIdleTimeout() at System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters) at System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters) at System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironment(String appId, IApplicationHost appHost, HostingEnvironmentParameters hostingParameters) at System.Web.Hosting.ApplicationManager.CreateAppDomainWithHostingEnvironmentAndReportErrors(String appId, IApplicationHost appHost, HostingEnvironmentParameters hostingParameters) For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. ------------------------ Failed to execute the request because the ASP.NET process identity does not have read permissions to the global assembly cache. Error: 0x80131902 For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. ------------------------- aspnet_wp.exe (PID: 4568) stopped unexpectedly. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Here is the web error message: Server Application Unavailable The web application you are attempting to access on this web server is currently unavailable. Please hit the "Refresh" button in your web browser to retry your request. Administrator Note: An error message detailing the cause of this specific request failure can be found in the application event log of the web server. Please review this log entry to discover what caused this error to occur. Thank you for your help, Steve

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• Nested partial output caching in asp.net mvc 3

  - by Anwar Chandra

  Hi All, I am using Razor view engine in ASP.Net MVC 3 RC 2 this is part of my view city.cshtml (drastically simplified for the sake of simple example) <!-- in city.cshtml --> <div class="list"> @foreach(var product in SQL.GetProducts(Model.City) ) { <div class="product"> <div>@product.Name</div> <div class="category"> @foreach(var category in SQL.GetCategories(product.ID) ) { <a href="@category.Url">@category.Name</a> » } </div> </div> } </div> I want to cache this part of my output using OutputCache attribute. so I created an action ProductList with OutputCache attribute enabled <!-- in city.cshtml --> <div class="list"> @Html.Action("ProductList", new { City = Model.City }) </div> and I created the view in ProductList.cshtml as below <!-- in ProductList.cshtml --> @foreach(var product in Model.Products ) { <div class="product"> <div>@product.Name</div> <div class="category"> @foreach(var category in SQL.GetCategories(product.ID) ) { <a href="@category.Url">@category.Name</a> » } </div> </div> } but I still need to cache the category path output on each product. so I created an action CategoryPath with OutputCache attribute enabled <!-- in ProductList.cshtml --> @foreach(var product in Model.Products ){ <div class="product"> <div>@product.Name</div> <div class="category"> @Html.Action("CategoryPath", new { ProductID = product.ID }) </div> </div> } but apparently this is not allowed. I got this error.. OutputCacheAttribute is not allowed on child actions which are children of an already cached child action. I believe they have a good reason why they need to disallow this. but I really want this kind of nested Output Caching Please, any idea for a workaround?

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• Paging & Sorting grids with ASP.Net MVC

  - by Scott Ivey

  I'm new to MVC, and am not following how you'd do paging and sorting on a grid. I'm used to using the asp.Net GridView control with an ObjectDataSource pointed at objects in our business layer - and in that case the ODS handles all of the paging & sorting using the methods that our ORM generates on the objects. I've looked at using the same ORM with MVC - and things work out fine there - i just loop thru the collections to build the table on the page - but without the ODS to handle the paging & sorting, i'm confused as to how I'd handle that. Would I have a separate controller for the paging and sorting? I'm not sure what the best practices are for this scenario, so if someone can point me in the right direction it would be much appreciated. Edit: Ok, so I understand that I need to roll my own - but where do I start? I've created a CustomerController, and a view that displays a table of customers that looks like below - and I want to sort on FirstName or LastName columns. My Model has a Sort() method on it that'll take a string sort expression in the format that would be used by a GridView/ODS pair. Would I create a new Action on my CustomerController called Sort, and put an ActionLink in my header? <table> <tr> <th> First Name </th> <th> Last Name </th> </tr> <% foreach (var item in Model) { %> <tr> <td> <%= Html.Encode(item.FirstName) %> </td> <td> <%= Html.Encode(item.LastName) %> </td> </tr> <% } %> </table>

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• Need help helping in converting jquery, ajax, json and asp.net

  - by Haja Mohaideen

  I am tying out this tutorial, http://www.ezzylearning.com/tutorial.aspx?tid=5869127. It works perfectly. What I am now trying to do is to host the aspx contents as html file. This html file is hosted on my wampserver which is on my laptop. The asp.net code hosted on my test server. When I try to access, I get the following error, Resource interpreted as Script but transferred with MIME type text/html: "http://201.x.x.x/testAjax/Default.aspx/AddProductToCart?callback=jQuery17103264484549872577_1346923699990&{%20pID:%20%226765%22,%20qty:%20%22100%22,%20lblType:%20%2220%22%20}&_=1346923704482". jquery.min.js:4 Uncaught SyntaxError: Unexpected token < I am not sure how to solve this problem. index.html code $(function () { $('#btnAddToCart').click(function () { var result = $.ajax({ type: "POST", url: "http://202.161.45.124/testAjax/Default.aspx/AddProductToCart", crossDomain: true, data: '{ pID: "6765", qty: "100", lblType: "20" }', contentType: "application/json; charset=utf-8", dataType: "jsonp", success: succeeded, failure: function (msg) { alert(msg); }, error: function (xhr, err) { alert(err); } }); }); }); function succeeded(msg) { alert(msg.d); } function btnAddToCart_onclick() { } </script> </head> <body> <form name="form1" method="post"> <div> <input type="button" id="btnAddToCart" onclick="return btnAddToCart_onclick()" value="Button" /> </div> </form> aspx.vb Imports System.Web.Services Imports System.Web.Script.Services <ScriptService()> Public Class WebForm1 Inherits Page Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Session("test") = "" End Sub <WebMethod()> <ScriptMethod(UseHttpGet:=False, ResponseFormat:=ResponseFormat.Json)> Public Shared Function AddProductToCart(pID As String, qty As String, lblType As String) As String Dim selectedProduct As String = String.Format("+ {0} - {1} - {2}", pID, qty, lblType) HttpContext.Current.Session("test") += selectedProduct Return HttpContext.Current.Session("test").ToString() End Function End Class

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• Get Confirm value in vb.net

  - by user1805641

  I have a hidden asp Button in a Repeater. In the VB.NET code behind I use the Rerpeater_ItemCommand to get the click event within the Repeater. There's a check if user is already recording a project. If yes and he wants to start a new one, a confirm box should appear asking "Are you sure?" How can I access the click value from confirm? <asp:Repeater ID="Repeater1" runat="server" OnItemCommand="Repeater1_ItemCommand"> <ItemTemplate> <div class="tile user_view user_<%# Eval("employeeName") %>"> <div class="tilesheight"></div> <div class="element"> <asp:Button ID="Button1" CssClass="hiddenbutton" runat="server" /> Index: <asp:Label ID="Label1" runat="server" Text='<%# Eval("index") %>' /><br /> <hr class="hr" /> customer: <asp:Label ID="CustomerLabel" runat="server" Text='<%# Eval("customer") %>' /><br /> <hr class ="hr" /> order: <asp:Label ID="OrderNoLabel" runat="server" Text='<%# Eval("orderNo") %>' /><br /> <asp:Label ID="DescriptionLabel" runat="server" Text='<%# Eval("description") %>' /><br /> <hr class="hr" /> </div> </div> </ItemTemplate> </asp:Repeater> code behind: If empRecs.Contains(projects.Item(index.Text).employeeID) Then 'Catch index of recording order i = empRecs.IndexOf(projects.Item(index.Text).employeeID) Page.ClientScript.RegisterStartupScript(Me.GetType, "confirm", "confirm('Order " & empRecs(i + 2) & " already recording. Would you like to start a new one?')",True) 'If users clicks ok insertData() End If Other solutions are using the Click Event and a hidden field. But the problem is, I don't want the confirmbox to appear every time the button is clicked. Only when empRecs conatins an employee. Thanks for helping

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• asp.net mvc 2 multithread

  - by Chris Cap

  I'm getting some weird behavior in asp.net MVC2 (at least it's not what I'm expecting). I have a controller httppost action that processes credit cards. I'm setting a session variable on the server to let me know if a user has attempted to process a card. I clear that session variable when I'm done. I am doing some very quick posts to test the process and the session variable is coming back null everytime because I clear the session variable at the end of the process. I have some debug prints that show me that the all requests are processed synchronously. That is...the first attempt occurs, it fails, session variable is cleared, second attempt tries and fails and the variable is cleared, etc... My first thought was that this was a side effect of debugging and that it just lined requests up for debugging purposes using the local webserver. So I put it on a development server and the same thing is occurring. Multiple submits/posts are processed synchronously. I even put a System.Threading.Sleep in there to make sure it would stop right after I set the session variable and it still won't even START the second request until the first is done. Has anyone else seen this behavior? My understanding was that a worker process was spawned for each request and that these actions could happen asychronously. Here's some psuedo code if (Session["CardCharged"] != null) return RedirectToAction("Index", "Problem"); Session["CardCharged"] = false; //starting the process System.Threading.Thread.Sleep(10000); //charge card here if (!providerResponse.IsApproved) { System.Diagnostics.Debug.WriteLine("failed"); Session["CardCharged"] = null; //have to allow them to charge again since this failed return View(myModel); } Session["CardCharged"] = true; return RedirectToAction("Index", "OrderComplete"); I should mention that my code ALWAYS fails the credit card check for testing purposes. I'm trying to test the situation where processing is STILL occurring and redirect the user elsewhere. I have set a dummy session variable elsewhere to assure that the session id "sticks". So I know the session id is the same for each request. Thanks

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• How much am I worth hourly as a software/web developer? [closed]

  - by luckysmack

  I may be starting a new job very soon as a developer for both web and desktop software. The primary languages I will be using is ASP.NET with C# with some php for existing projects(I've already had one interview which went very well). The job deals primarily in advertising. But this is my first real job in the market, I have no degrees, but have some college time(~1yr). So I am primarily self taught. They are fully aware of my skill set and lack of degrees or certificates. I applied as an entry level developer. It will be a permanent and full time/hourly position, and not a per contract job. So since it my cherry job, im not really sure what to ask for. even though im self taught im pretty confident in my skills and know what im doing fairly well. I pick up on new concepts very well and find new things fairly easy to learn. Here is a very brief summary of my skills: PHP: ~2years C#/.NET: 2 months Python: Basics only. ~1 month OOP Familiarity: Great (1 year) MVC Familiarity: Great (1 year) PHP Frameworks used: CakePHP(6 months), Yii(3 months), Lithium(3 months) CMS Familiar with: Drupal(1.5 years), Wordpress(only basics) I also have ~2yrs experience in maintaining my own VPS server and the hassles all that entails (linux/debian) Pretty much all the above will be used at this job. Although I will be using C# a vast majority of the time. I only recently started learning it but am moving along fairly rapidly and its all going smooth as butter. So what have I built? I have one proprietary site built in drupal which is used an an order log for products, inventory, and their shipments. It is also able to process payments through paypal merchant services. I have worked on a handful of other small apps used here and there I'm not able to show but which worked fairly well (all in php using frameworks though). The business does fairly well and is far from a a typical corporate type environment. It is much closer to a small development studio. And it is based out of northern California. I don't know how/what more info I can give on them. I also want this to be able to be referenced by other people possibly so I am looking for general tips and ideas to get an answer as well. I had trouble finding a reasonable range on other websites which seemed to be either way to low, or showed what a veteran developer makes. I know this is a fairly subjective question, but it is difficult to get a reasonable answer or guesstimate anywhere else. Even if only a little bit help, its much appreciated. So as for the direct question, based on all this info (did I miss anything?), how much should I ask for hourly? How much am I worth as a software developer?

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• FreeBSD performance tuning. Sysctls, loader.conf, kernel

  - by SaveTheRbtz

  I wanted to share knowledge of tuning FreeBSD via sysctl.conf/loader.conf/KENCONF. It was initially based on Igor Sysoev's (author of nginx) presentation about FreeBSD tuning up to 100,000-200,000 active connections. Tunings are for FreeBSD-CURRENT. Since 7.2 amd64 some of them are tuned well by default. Prior 7.0 some of them are boot only (set via /boot/loader.conf) or does not exist at all. sysctl.conf: # No zero mapping feature # May break wine # (There are also reports about broken samba3) #security.bsd.map_at_zero=0 # If you have really busy webserver with apache13 you may run out of processes #kern.maxproc=10000 # Same for servers with apache2 / Pound #kern.threads.max_threads_per_proc=4096 # Max. backlog size kern.ipc.somaxconn=4096 # Shared memory // 7.2+ can use shared memory > 2Gb kern.ipc.shmmax=2147483648 # Sockets kern.ipc.maxsockets=204800 # Can cause this on older kernels: # http://old.nabble.com/Significant-performance-regression-for-increased-maxsockbuf-on-8.0-RELEASE-tt26745981.html#a26745981 ) kern.ipc.maxsockbuf=10485760 # Mbuf 2k clusters (on amd64 7.2+ 25600 is default) # For such high value vm.kmem_size must be increased to 3G kern.ipc.nmbclusters=262144 # Jumbo pagesize(_SC_PAGESIZE) clusters # Used as general packet storage for jumbo frames # can be monitored via `netstat -m` #kern.ipc.nmbjumbop=262144 # Jumbo 9k/16k clusters # If you are using them #kern.ipc.nmbjumbo9=65536 #kern.ipc.nmbjumbo16=32768 # For lower latency you can decrease scheduler's maximum time slice # default: stathz/10 (~ 13) #kern.sched.slice=1 # Increase max command-line length showed in `ps` (e.g for Tomcat/Java) # Default is PAGE_SIZE / 16 or 256 on x86 # This avoids commands to be presented as [executable] in `ps` # For more info see: http://www.freebsd.org/cgi/query-pr.cgi?pr=120749 kern.ps_arg_cache_limit=4096 # Every socket is a file, so increase them kern.maxfiles=204800 kern.maxfilesperproc=200000 kern.maxvnodes=200000 # On some systems HPET is almost 2 times faster than default ACPI-fast # Useful on systems with lots of clock_gettime / gettimeofday calls # See http://old.nabble.com/ACPI-fast-default-timecounter,-but-HPET-83--faster-td23248172.html # After revision 222222 HPET became default: http://svnweb.freebsd.org/base?view=revision&revision=222222 kern.timecounter.hardware=HPET # Small receive space, only usable on http-server, on file server this # should be increased to 65535 or even more #net.inet.tcp.recvspace=8192 # This is useful on Fat-Long-Pipes #net.inet.tcp.recvbuf_max=10485760 #net.inet.tcp.recvbuf_inc=65535 # Small send space is useful for http servers that serve small files # Autotuned since 7.x net.inet.tcp.sendspace=16384 # This is useful on Fat-Long-Pipes #net.inet.tcp.sendbuf_max=10485760 #net.inet.tcp.sendbuf_inc=65535 # Turn off receive autotuning # You can play with it. #net.inet.tcp.recvbuf_auto=0 #net.inet.tcp.sendbuf_auto=0 # This should be enabled if you going to use big spaces (>64k) # Also timestamp field is useful when using syncookies net.inet.tcp.rfc1323=1 # Turn this off on high-speed, lossless connections (LAN 1Gbit+) # If you set it there is no need in TCP_NODELAY sockopt (see man tcp) net.inet.tcp.delayed_ack=0 # This feature is useful if you are serving data over modems, Gigabit Ethernet, # or even high speed WAN links (or any other link with a high bandwidth delay product), # especially if you are also using window scaling or have configured a large send window. # Automatically disables on small RTT ( http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/tcp_subr.c?#rev1.237 ) # This sysctl was removed in 10-CURRENT: # See: http://www.mail-archive.com/[email protected]/msg06178.html #net.inet.tcp.inflight.enable=0 # TCP slowstart algorithm tunings # We assuming we have very fast clients #net.inet.tcp.slowstart_flightsize=100 #net.inet.tcp.local_slowstart_flightsize=100 # Disable randomizing of ports to avoid false RST # Before usage check SA here www.bsdcan.org/2006/papers/ImprovingTCPIP.pdf # (it's also says that port randomization auto-disables at some conn.rates, but I didn't checked it thou) #net.inet.ip.portrange.randomized=0 # Increase portrange # For outgoing connections only. Good for seed-boxes and ftp servers. net.inet.ip.portrange.first=1024 net.inet.ip.portrange.last=65535 # # stops route cache degregation during a high-bandwidth flood # http://www.freebsd.org/doc/en/books/handbook/securing-freebsd.html #net.inet.ip.rtexpire=2 net.inet.ip.rtminexpire=2 net.inet.ip.rtmaxcache=1024 # Security net.inet.ip.redirect=0 net.inet.ip.sourceroute=0 net.inet.ip.accept_sourceroute=0 net.inet.icmp.maskrepl=0 net.inet.icmp.log_redirect=0 net.inet.icmp.drop_redirect=1 net.inet.tcp.drop_synfin=1 # # There is also good example of sysctl.conf with comments: # http://www.thern.org/projects/sysctl.conf # # icmp may NOT rst, helpful for those pesky spoofed # icmp/udp floods that end up taking up your outgoing # bandwidth/ifqueue due to all that outgoing RST traffic. # #net.inet.tcp.icmp_may_rst=0 # Security net.inet.udp.blackhole=1 net.inet.tcp.blackhole=2 # IPv6 Security # For more info see http://www.fosslc.org/drupal/content/security-implications-ipv6 # Disable Node info replies # To see this vulnerability in action run `ping6 -a sglAac ::1` or `ping6 -w ::1` on unprotected node net.inet6.icmp6.nodeinfo=0 # Turn on IPv6 privacy extensions # For more info see proposal http://unix.derkeiler.com/Mailing-Lists/FreeBSD/net/2008-06/msg00103.html net.inet6.ip6.use_tempaddr=1 net.inet6.ip6.prefer_tempaddr=1 # Disable ICMP redirect net.inet6.icmp6.rediraccept=0 # Disable acceptation of RA and auto linklocal generation if you don't use them #net.inet6.ip6.accept_rtadv=0 #net.inet6.ip6.auto_linklocal=0 # Increases default TTL, sometimes useful # Default is 64 net.inet.ip.ttl=128 # Lessen max segment life to conserve resources # ACK waiting time in miliseconds # (default: 30000. RFC from 1979 recommends 120000) net.inet.tcp.msl=5000 # Max bumber of timewait sockets net.inet.tcp.maxtcptw=200000 # Don't use tw on local connections # As of 15 Apr 2009. Igor Sysoev says that nolocaltimewait has some buggy realization. # So disable it or now till get fixed #net.inet.tcp.nolocaltimewait=1 # FIN_WAIT_2 state fast recycle net.inet.tcp.fast_finwait2_recycle=1 # Time before tcp keepalive probe is sent # default is 2 hours (7200000) #net.inet.tcp.keepidle=60000 # Should be increased until net.inet.ip.intr_queue_drops is zero net.inet.ip.intr_queue_maxlen=4096 # Interrupt handling via multiple CPU, but with context switch. # You can play with it. Default is 1; #net.isr.direct=0 # This is for routers only #net.inet.ip.forwarding=1 #net.inet.ip.fastforwarding=1 # This speed ups dummynet when channel isn't saturated net.inet.ip.dummynet.io_fast=1 # Increase dummynet(4) hash #net.inet.ip.dummynet.hash_size=2048 #net.inet.ip.dummynet.max_chain_len # Should be increased when you have A LOT of files on server # (Increase until vfs.ufs.dirhash_mem becomes lower) vfs.ufs.dirhash_maxmem=67108864 # Note from commit http://svn.freebsd.org/base/head@211031 : # For systems with RAID volumes and/or virtualization envirnments, where # read performance is very important, increasing this sysctl tunable to 32 # or even more will demonstratively yield additional performance benefits. vfs.read_max=32 # Explicit Congestion Notification (see http://en.wikipedia.org/wiki/Explicit_Congestion_Notification) net.inet.tcp.ecn.enable=1 # Flowtable - flow caching mechanism # Useful for routers #net.inet.flowtable.enable=1 #net.inet.flowtable.nmbflows=65535 # Extreme polling tuning #kern.polling.burst_max=1000 #kern.polling.each_burst=1000 #kern.polling.reg_frac=100 #kern.polling.user_frac=1 #kern.polling.idle_poll=0 # IPFW dynamic rules and timeouts tuning # Increase dyn_buckets till net.inet.ip.fw.curr_dyn_buckets is lower net.inet.ip.fw.dyn_buckets=65536 net.inet.ip.fw.dyn_max=65536 net.inet.ip.fw.dyn_ack_lifetime=120 net.inet.ip.fw.dyn_syn_lifetime=10 net.inet.ip.fw.dyn_fin_lifetime=2 net.inet.ip.fw.dyn_short_lifetime=10 # Make packets pass firewall only once when using dummynet # i.e. packets going thru pipe are passing out from firewall with accept #net.inet.ip.fw.one_pass=1 # shm_use_phys Wires all shared pages, making them unswappable # Use this to lessen Virtual Memory Manager's work when using Shared Mem. # Useful for databases #kern.ipc.shm_use_phys=1 # ZFS # Enable prefetch. Useful for sequential load type i.e fileserver. # FreeBSD sets vfs.zfs.prefetch_disable to 1 on any i386 systems and # on any amd64 systems with less than 4GB of avaiable memory # For additional info check this nabble thread http://old.nabble.com/Samba-read-speed-performance-tuning-td27964534.html #vfs.zfs.prefetch_disable=0 # On highload servers you may notice following message in dmesg: # "Approaching the limit on PV entries, consider increasing either the # vm.pmap.shpgperproc or the vm.pmap.pv_entry_max tunable" vm.pmap.shpgperproc=2048 loader.conf: # Accept filters for data, http and DNS requests # Useful when your software uses select() instead of kevent/kqueue or when you under DDoS # DNS accf available on 8.0+ accf_data_load="YES" accf_http_load="YES" accf_dns_load="YES" # Async IO system calls aio_load="YES" # Linux specific devices in /dev # As for 8.1 it only /dev/full #lindev_load="YES" # Adds NCQ support in FreeBSD # WARNING! all ad[0-9]+ devices will be renamed to ada[0-9]+ # 8.0+ only #ahci_load="YES" #siis_load="YES" # FreeBSD 8.2+ # New Congestion Control for FreeBSD # http://caia.swin.edu.au/urp/newtcp/tools/cc_chd-readme-0.1.txt # http://www.ietf.org/proceedings/78/slides/iccrg-5.pdf # Initial merge commit message http://www.mail-archive.com/[email protected]/msg31410.html #cc_chd_load="YES" # Increase kernel memory size to 3G. # # Use ONLY if you have KVA_PAGES in kernel configuration, and you have more than 3G RAM # Otherwise panic will happen on next reboot! # # It's required for high buffer sizes: kern.ipc.nmbjumbop, kern.ipc.nmbclusters, etc # Useful on highload stateful firewalls, proxies or ZFS fileservers # (FreeBSD 7.2+ amd64 users: Check that current value is lower!) #vm.kmem_size="3G" # If your server has lots of swap (>4Gb) you should increase following value # according to http://lists.freebsd.org/pipermail/freebsd-hackers/2009-October/029616.html # Otherwise you'll be getting errors # "kernel: swap zone exhausted, increase kern.maxswzone" # kern.maxswzone="256M" # Older versions of FreeBSD can't tune maxfiles on the fly #kern.maxfiles="200000" # Useful for databases # Sets maximum data size to 1G # (FreeBSD 7.2+ amd64 users: Check that current value is lower!) #kern.maxdsiz="1G" # Maximum buffer size(vfs.maxbufspace) # You can check current one via vfs.bufspace # Should be lowered/upped depending on server's load-type # Usually decreased to preserve kmem # (default is 10% of mem) #kern.maxbcache="512M" # Sendfile buffers # For i386 only #kern.ipc.nsfbufs=10240 # FreeBSD 9+ # HPET "legacy route" support. It should allow HPET to work per-CPU # See http://www.mail-archive.com/[email protected]/msg03603.html #hint.atrtc.0.clock=0 #hint.attimer.0.clock=0 #hint.hpet.0.legacy_route=1 # syncache Hash table tuning net.inet.tcp.syncache.hashsize=1024 net.inet.tcp.syncache.bucketlimit=512 net.inet.tcp.syncache.cachelimit=65536 # Increased hostcache # Later host cache can be viewed via net.inet.tcp.hostcache.list hidden sysctl # Very useful for it's RTT RTTVAR # Must be power of two net.inet.tcp.hostcache.hashsize=65536 # hashsize * bucketlimit (which is 30 by default) # It allocates 255Mb (1966080*136) of RAM net.inet.tcp.hostcache.cachelimit=1966080 # TCP control-block Hash table tuning net.inet.tcp.tcbhashsize=4096 # Disable ipfw deny all # Should be uncommented when there is a chance that # kernel and ipfw binary may be out-of sync on next reboot #net.inet.ip.fw.default_to_accept=1 # # SIFTR (Statistical Information For TCP Research) is a kernel module that # logs a range of statistics on active TCP connections to a log file. # See prerelease notes http://groups.google.com/group/mailing.freebsd.current/browse_thread/thread/b4c18be6cdce76e4 # and man 4 sitfr #siftr_load="YES" # Enable superpages, for 7.2+ only # Also read http://lists.freebsd.org/pipermail/freebsd-hackers/2009-November/030094.html vm.pmap.pg_ps_enabled=1 # Usefull if you are using Intel-Gigabit NIC #hw.em.rxd=4096 #hw.em.txd=4096 #hw.em.rx_process_limit="-1" # Also if you have ALOT interrupts on NIC - play with following parameters # NOTE: You should set them for every NIC #dev.em.0.rx_int_delay: 250 #dev.em.0.tx_int_delay: 250 #dev.em.0.rx_abs_int_delay: 250 #dev.em.0.tx_abs_int_delay: 250 # There is also multithreaded version of em/igb drivers can be found here: # http://people.yandex-team.ru/~wawa/ # # for additional em monitoring and statistics use # sysctl dev.em.0.stats=1 ; dmesg # sysctl dev.em.0.debug=1 ; dmesg # Also after r209242 (-CURRENT) there is a separate sysctl for each stat variable; # Same tunings for igb #hw.igb.rxd=4096 #hw.igb.txd=4096 #hw.igb.rx_process_limit=100 # Some useful netisr tunables. See sysctl net.isr #net.isr.maxthreads=4 #net.isr.defaultqlimit=4096 #net.isr.maxqlimit: 10240 # Bind netisr threads to CPUs #net.isr.bindthreads=1 # # FreeBSD 9.x+ # Increase interface send queue length # See commit message http://svn.freebsd.org/viewvc/base?view=revision&revision=207554 #net.link.ifqmaxlen=1024 # Nicer boot logo =) loader_logo="beastie" And finally here is KERNCONF: # Just some of them, see also # cat /sys/{i386,amd64,}/conf/NOTES # This one useful only on i386 #options KVA_PAGES=512 # You can play with HZ in environments with high interrupt rate (default is 1000) # 100 is for my notebook to prolong it's battery life #options HZ=100 # Polling is goot on network loads with high packet rates and low-end NICs # NB! Do not enable it if you want more than one netisr thread #options DEVICE_POLLING # Eliminate datacopy on socket read-write # To take advantage with zero copy sockets you should have an MTU >= 4k # This req. is only for receiving data. # Read more in man zero_copy_sockets # Also this epic thread on kernel trap: # http://kerneltrap.org/node/6506 # Here Linus says that "anybody that does it that way (FreeBSD) is totally incompetent" #options ZERO_COPY_SOCKETS # Support TCP sign. Used for IPSec options TCP_SIGNATURE # There was stackoverflow found in KAME IPSec stack: # See http://secunia.com/advisories/43995/ # For quick workaround you can use `ipfw add deny proto ipcomp` options IPSEC # This ones can be loaded as modules. They described in loader.conf section #options ACCEPT_FILTER_DATA #options ACCEPT_FILTER_HTTP # Adding ipfw, also can be loaded as modules options IPFIREWALL # On 8.1+ you can disable verbose to see blocked packets on ipfw0 interface. # Also there is no point in compiling verbose into the kernel, because # now there is net.inet.ip.fw.verbose tunable. #options IPFIREWALL_VERBOSE #options IPFIREWALL_VERBOSE_LIMIT=10 options IPFIREWALL_FORWARD # Adding kernel NAT options IPFIREWALL_NAT options LIBALIAS # Traffic shaping options DUMMYNET # Divert, i.e. for userspace NAT options IPDIVERT # This is for OpenBSD's pf firewall device pf device pflog # pf's QoS - ALTQ options ALTQ options ALTQ_CBQ # Class Bases Queuing (CBQ) options ALTQ_RED # Random Early Detection (RED) options ALTQ_RIO # RED In/Out options ALTQ_HFSC # Hierarchical Packet Scheduler (HFSC) options ALTQ_PRIQ # Priority Queuing (PRIQ) options ALTQ_NOPCC # Required for SMP build # Pretty console # Manual can be found here http://forums.freebsd.org/showthread.php?t=6134 #options VESA #options SC_PIXEL_MODE # Disable reboot on Ctrl Alt Del #options SC_DISABLE_REBOOT # Change normal|kernel messages color options SC_NORM_ATTR=(FG_GREEN|BG_BLACK) options SC_KERNEL_CONS_ATTR=(FG_YELLOW|BG_BLACK) # More scroll space options SC_HISTORY_SIZE=8192 # Adding hardware crypto device device crypto device cryptodev # Useful network interfaces device vlan device tap #Virtual Ethernet driver device gre #IP over IP tunneling device if_bridge #Bridge interface device pfsync #synchronization interface for PF device carp #Common Address Redundancy Protocol device enc #IPsec interface device lagg #Link aggregation interface device stf #IPv4-IPv6 port # Also for my notebook, but may be used with Opteron device amdtemp # Same for Intel processors device coretemp # man 4 cpuctl device cpuctl # CPU control pseudo-device # Support for ECMP. More than one route for destination # Works even with default route so one can use it as LB for two ISP # For now code is unstable and panics (panic: rtfree 2) on route deletions. #options RADIX_MPATH # Multicast routing #options MROUTING #options PIM # Debug & DTrace options KDB # Kernel debugger related code options KDB_TRACE # Print a stack trace for a panic options KDTRACE_FRAME # amd64-only(?) options KDTRACE_HOOKS # all architectures - enable general DTrace hooks #options DDB #options DDB_CTF # all architectures - kernel ELF linker loads CTF data # Adaptive spining in lockmgr (8.x+) # See http://www.mail-archive.com/[email protected]/msg10782.html options ADAPTIVE_LOCKMGRS # UTF-8 in console (8.x+) #options TEKEN_UTF8 # FreeBSD 8.1+ # Deadlock resolver thread # For additional information see http://www.mail-archive.com/[email protected]/msg18124.html # (FYI: "resolution" is panic so use with caution) #options DEADLKRES # Increase maximum size of Raw I/O and sendfile(2) readahead #options MAXPHYS=(1024*1024) #options MAXBSIZE=(1024*1024) # For scheduler debug enable following option. # Debug will be available via `kern.sched.stats` sysctl # For more information see http://svnweb.freebsd.org/base/head/sys/conf/NOTES?view=markup #options SCHED_STATS If you are tuning network for maximum performance you may wish to play with ifconfig options like: # You can list all capabilities via `ifconfig -m` ifconfig [-]rxcsum [-]txcsum [-]tso [-]lro mtu In case you've enabled DDB in kernel config, you should edit your /etc/ddb.conf and add something like this to enable automatic reboot (and textdump as bonus): script kdb.enter.panic=textdump set; capture on; show pcpu; bt; ps; alltrace; capture off; call doadump; reset script kdb.enter.default=textdump set; capture on; bt; ps; capture off; call doadump; reset And do not forget to add ddb_enable="YES" to /etc/rc.conf Since FreeBSD 9 you can select to enable/disable flowcontrol on your NIC: # See http://en.wikipedia.org/wiki/Ethernet_flow_control and # http://www.mail-archive.com/[email protected]/msg07927.html for additional info ifconfig bge0 media auto mediaopt flowcontrol PS. Also most of FreeBSD's limits can be monitored by # vmstat -z and # limits PPS. variety of network counters can be monitored via # netstat -s In FreeBSD-9 netstat's -Q option appeared, try following command to display netisr stats # netstat -Q PPPS. also see # man 7 tuning PPPPS. I wanted to thank FreeBSD community, especially author of nginx - Igor Sysoev, nginx-ru@ and FreeBSD-performance@ mailing lists for providing useful information about FreeBSD tuning. FreeBSD WIP * Whats cooking for FreeBSD 7? * Whats cooking for FreeBSD 8? * Whats cooking for FreeBSD 9? So here is the question: What tunings are you using on yours FreeBSD servers? You can also post your /etc/sysctl.conf, /boot/loader.conf, kernel options, etc with description of its' meaning (do not copy-paste from sysctl -d). Don't forget to specify server type (web, smb, gateway, etc) Let's share experience!

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• ASP.NET MVC 2 - Saving child entities on form submit

  - by Justin

  Hey, I'm using ASP.NET MVC 2 and am struggling with saving child entities. I have an existing Invoice entity (which I create on a separate form) and then I have a LogHours view that I'd like to use to save InvoiceLog's, which are child entities of Invoice. Here's the view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<TothSolutions.Data.Invoice>" %> <asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> Log Hours </asp:Content> <asp:Content ID="Content3" ContentPlaceHolderID="HeadContent" runat="server"> <script type="text/javascript"> $(document).ready(function () { $("#InvoiceLogs_0__Description").focus(); }); </script> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <h2>Log Hours</h2> <% using (Html.BeginForm("SaveHours", "Invoices")) {%> <%: Html.ValidationSummary(true) %> <fieldset> <legend>Fields</legend> <table> <tr> <th>Date</th> <th>Description</th> <th>Hours</th> </tr> <% int index = 0; foreach (var log in Model.InvoiceLogs) { %> <tr> <td><%: log.LogDate.ToShortDateString() %></td> <td><%: Html.TextBox("InvoiceLogs[" + index + "].Description")%></td> <td><%: Html.TextBox("InvoiceLogs[" + index + "].Hours")%></td> <td>Hours</td> </tr> <% index++; } %> </table> <p> <%: Html.Hidden("InvoiceID") %> <%: Html.Hidden("CreateDate") %> <input type="submit" value="Save" /> </p> </fieldset> <% } %> <div> <%: Html.ActionLink("Back to List", "Index") %> </div> </asp:Content> And here's the controller code: //GET: /Secure/Invoices/LogHours/ public ActionResult LogHours(int id) { var invoice = DataContext.InvoiceData.Get(id); if (invoice == null) { throw new Exception("Invoice not found with id: " + id); } return View(invoice); } //POST: /Secure/Invoices/SaveHours/ [AcceptVerbs(HttpVerbs.Post)] public ActionResult SaveHours([Bind(Exclude = "InvoiceLogs")]Invoice invoice) { TryUpdateModel(invoice.InvoiceLogs, "InvoiceLogs"); invoice.UpdateDate = DateTime.Now; invoice.DeveloperID = DeveloperID; //attaching existing invoice. DataContext.InvoiceData.Attach(invoice); //save changes. DataContext.SaveChanges(); //redirect to invoice list. return RedirectToAction("Index"); } And the data access code: public static void Attach(Invoice invoice) { var i = new Invoice { InvoiceID = invoice.InvoiceID }; db.Invoices.Attach(i); db.Invoices.ApplyCurrentValues(invoice); } In the SaveHours action, it properly sets the values of the InvoiceLog entities after I call TryUpdateModel but when it does SaveChanges it doesn't update the database with the new values. Also, if you manually update the values of the InvoiceLog entries in the database and then go to this page it doesn't populate the textboxes so it's clearly not binding correctly. Thanks, Justin

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• Problem Implementing StructureMap in VB.Net Conversion of SharpArchitecture

  - by Monkeeman69

  I work in a VB.Net environment and have recently been tasked with creating an MVC enviroment to use as a base to work from. I decided to convert the latest SharpArchitecture release (Q3 2009) into VB, which on the whole has gone fine after a bit of hair pulling. I came across a problem with Castle Windsor where my custom repository interface (lives in the core/domain project) that was reference in the constructor of my test controller was not getting injected with the concrete implementation (from the data project). I hit a brick wall with this so basically decided to switch out Castle Windsor for StructureMap. I think I have implemented this ok as everything compiles and runs and my controller ran ok when referencing a custom repository interface. It appears now that I have/or cannot now setup my generic interfaces up properly (I hope this makes sense so far as I am new to all this). When I use IRepository(Of T) (wanting it to be injected with a concrete implementation of Repository(Of Type)) in the controller constructor I am getting the following runtime error: "StructureMap Exception Code: 202 No Default Instance defined for PluginFamily SharpArch.Core.PersistenceSupport.IRepository`1[[DebtRemedy.Core.Page, DebtRemedy.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], SharpArch.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b5f559ae0ac4e006" Here are my code excerpts that I am using (my project is called DebtRemedy). My structuremap registry class Public Class DefaultRegistry Inherits Registry Public Sub New() ''//Generic Repositories AddGenericRepositories() ''//Custom Repositories AddCustomRepositories() ''//Application Services AddApplicationServices() ''//Validator [For](GetType(IValidator)).Use(GetType(Validator)) End Sub Private Sub AddGenericRepositories() ''//ForRequestedType(GetType(IRepository(Of ))).TheDefaultIsConcreteType(GetType(Repository(Of ))) [For](GetType(IEntityDuplicateChecker)).Use(GetType(EntityDuplicateChecker)) [For](GetType(IRepository(Of ))).Use(GetType(Repository(Of ))) [For](GetType(INHibernateRepository(Of ))).Use(GetType(NHibernateRepository(Of ))) [For](GetType(IRepositoryWithTypedId(Of ,))).Use(GetType(RepositoryWithTypedId(Of ,))) [For](GetType(INHibernateRepositoryWithTypedId(Of ,))).Use(GetType(NHibernateRepositoryWithTypedId(Of ,))) End Sub Private Sub AddCustomRepositories() Scan(AddressOf SetupCustomRepositories) End Sub Private Shared Sub SetupCustomRepositories(ByVal y As IAssemblyScanner) y.Assembly("DebtRemedy.Core") y.Assembly("DebtRemedy.Data") y.WithDefaultConventions() End Sub Private Sub AddApplicationServices() Scan(AddressOf SetupApplicationServices) End Sub Private Shared Sub SetupApplicationServices(ByVal y As IAssemblyScanner) y.Assembly("DebtRemedy.ApplicationServices") y.With(New FirstInterfaceConvention) End Sub End Class Public Class FirstInterfaceConvention Implements ITypeScanner Public Sub Process(ByVal type As Type, ByVal graph As PluginGraph) Implements ITypeScanner.Process If Not IsConcrete(type) Then Exit Sub End If ''//only works on concrete types Dim firstinterface = type.GetInterfaces().FirstOrDefault() ''//grabs first interface If firstinterface IsNot Nothing Then graph.AddType(firstinterface, type) Else ''//registers type ''//adds concrete types with no interfaces graph.AddType(type) End If End Sub End Class I have tried both ForRequestedType (which I think is now deprecated) and For. IRepository(Of T) lives in SharpArch.Core.PersistenceSupport. Repository(Of T) lives in SharpArch.Data.NHibernate. My servicelocator class Public Class StructureMapServiceLocator Inherits ServiceLocatorImplBase Private container As IContainer Public Sub New(ByVal container As IContainer) Me.container = container End Sub Protected Overloads Overrides Function DoGetInstance(ByVal serviceType As Type, ByVal key As String) As Object Return If(String.IsNullOrEmpty(key), container.GetInstance(serviceType), container.GetInstance(serviceType, key)) End Function Protected Overloads Overrides Function DoGetAllInstances(ByVal serviceType As Type) As IEnumerable(Of Object) Dim objList As New List(Of Object) For Each obj As Object In container.GetAllInstances(serviceType) objList.Add(obj) Next Return objList End Function End Class My controllerfactory class Public Class ServiceLocatorControllerFactory Inherits DefaultControllerFactory Protected Overloads Overrides Function GetControllerInstance(ByVal requestContext As RequestContext, ByVal controllerType As Type) As IController If controllerType Is Nothing Then Return Nothing End If Try Return TryCast(ObjectFactory.GetInstance(controllerType), Controller) Catch generatedExceptionName As StructureMapException System.Diagnostics.Debug.WriteLine(ObjectFactory.WhatDoIHave()) Throw End Try End Function End Class The initialise stuff in my gloabal.asax Dim container As IContainer = New Container(New DefaultRegistry) ControllerBuilder.Current.SetControllerFactory(New ServiceLocatorControllerFactory()) ServiceLocator.SetLocatorProvider(Function() New StructureMapServiceLocator(container)) My test controller Public Class DataCaptureController Inherits BaseController Private ReadOnly clientRepository As IClientRepository() Private ReadOnly pageRepository As IRepository(Of Page) Public Sub New(ByVal clientRepository As IClientRepository(), ByVal pageRepository As IRepository(Of Page)) Check.Require(clientRepository IsNot Nothing, "clientRepository may not be null") Check.Require(pageRepository IsNot Nothing, "pageRepository may not be null") Me.clientRepository = clientRepository Me.pageRepository = pageRepository End Sub Function Index() As ActionResult Return View() End Function The above works fine when I take out everything to do with the pageRepository which is IRepository(Of T). Any help with this would be greatly appreciated.

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• Business rule validation of hierarchical list of objects ASP.NET MVC

  - by SergeanT

  I have a list of objects that are organized in a tree using a Depth property: public class Quota { [Range(0, int.MaxValue, ErrorMessage = "Please enter an amount above zero.")] public int Amount { get; set; } public int Depth { get; set; } [Required] [RegularExpression("^[a-zA-Z]+$")] public string Origin { get; set; } // ... another properties with validation attributes } For data example (amount - origin) 100 originA 200 originB 50 originC 150 originD the model data looks like: IList<Quota> model = new List<Quota>(); model.Add(new Quota{ Amount = 100, Depth = 0, Origin = "originA"); model.Add(new Quota{ Amount = 200, Depth = 0, Origin = "originB"); model.Add(new Quota{ Amount = 50, Depth = 1, Origin = "originC"); model.Add(new Quota{ Amount = 150, Depth = 1, Orinig = "originD"); Editing of the list Then I use Editing a variable length list, ASP.NET MVC 2-style to raise editing of the list. Controller actions QuotaController.cs: public class QuotaController : Controller { // // GET: /Quota/EditList public ActionResult EditList() { IList<Quota> model = // ... assigments as in example above; return View(viewModel); } // // POST: /Quota/EditList [HttpPost] public ActionResult EditList(IList<Quota> quotas) { if (ModelState.IsValid) { // ... save logic return RedirectToAction("Details"); } return View(quotas); // Redisplay the form with errors } // ... other controller actions } View EditList.aspx: <%@ Page Title="" Language="C#" ... Inherits="System.Web.Mvc.ViewPage<IList<Quota>>" %> ... <h2>Edit Quotas</h2> <%=Html.ValidationSummary("Fix errors:") %> <% using (Html.BeginForm()) { foreach (var quota in Model) { Html.RenderPartial("QuotaEditorRow", quota); } %> <% } %> ... Partial View QuotaEditorRow.ascx: <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Quota>" %> <div class="quotas" style="margin-left: <%=Model.Depth*45 %>px"> <% using (Html.BeginCollectionItem("Quotas")) { %> <%=Html.HiddenFor(m=>m.Id) %> <%=Html.HiddenFor(m=>m.Depth) %> <%=Html.TextBoxFor(m=>m.Amount, new {@class = "number", size = 5})%> <%=Html.ValidationMessageFor(m=>m.Amount) %> Origin: <%=Html.TextBoxFor(m=>m.Origin)%> <%=Html.ValidationMessageFor(m=>m.Origin) %> ... <% } %> </div> Business rule validation How do I implement validation of business rule: Amount of quota and sum of amounts of nested quotas should equal (e.a. 200 = 50 + 150 in example)? I want to appropriate inputs Html.TextBoxFor(m=>m.Amount) be highlighted red if the rule is broken for it. In example if user enters not 200, but 201 - it should be red on submit. Using sever validation only. Thanks a lot for any advise.

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• ADO program to list members of a large group.

  - by AlexGomez

  Hi everyone, I'm attempting to list all the members in a Active Directory group using ADO. The problem I have is that many of these groups have over 1500 members and ADSI cannot handle more than 1500 items in a multi-valued attribute. Fortunately I came across Richard Muller's wonderful VBScript that handles more than 1500 members at http://www.rlmueller.net/DocumentLargeGroup.htm I modified his code as shown below so that I can list ALL the groups and its memberships in a certain OU. However, I'm keeping getting the exception shown below: "ADODB.Recordset: Item cannot be found in the collection corresponding to the requested name or ordinal." My program appears to get stuck at: strPath = adoRecordset.Fields("ADsPath").Value Set objGroup = GetObject(strPath) All I am doing above is issuing the query to get back a recordset consisting of the ADsPath for each group in the OU. It then walks through the recordset and grabs the ADsPath for the first group and store its in a variable named strPath; we then use the value of that variable to bind to the group account for that group. It really should work! Any idea why the code below doesn't work for me? Any pointers will be great appreciated. Thanks. Option Explicit Dim objRootDSE, strDNSDomain, adoCommand Dim adoConnection, strBase, strAttributes Dim strFilter, strQuery, adoRecordset Dim strDN, intCount, blnLast, intLowRange Dim intHighRange, intRangeStep, objField Dim objGroup, objMember, strName ' Determine DNS domain name. Set objRootDSE = GetObject("LDAP://RootDSE") 'strDNSDomain = objRootDSE.Get("DefaultNamingContext") strDNSDomain = "XXXXXXXX" ' Use ADO to search Active Directory. Set adoCommand = CreateObject("ADODB.Command") Set adoConnection = CreateObject("ADODB.Connection") adoConnection.Provider = "ADsDSOObject" adoConnection.Open = "Active Directory Provider" adoCommand.ActiveConnection = adoConnection adoCommand.Properties("Page Size") = 100 adoCommand.Properties("Timeout") = 30 adoCommand.Properties("Cache Results") = False ' Specify base of search. strBase = "<LDAP://" & strDNSDomain & ">" ' Specify the attribute values to retrieve. strAttributes = "member" ' Filter on objects of class "group" strFilter = "(&(objectClass=group)(samAccountName=*))" ' Enumerate direct group members. ' Use range limits to handle more than 1000/1500 members. ' Setup to retrieve 1000 members at a time. blnLast = False intRangeStep = 999 intLowRange = 0 IntHighRange = intLowRange + intRangeStep Do While True If (blnLast = True) Then ' If last query, retrieve remaining members. strQuery = strBase & ";" & strFilter & ";" _ & strAttributes & ";range=" & intLowRange _ & "-*;subtree" Else ' If not last query, retrieve 1000 members. strQuery = strBase & ";" & strFilter & ";" _ & strAttributes & ";range=" & intLowRange & "-" _ & intHighRange & ";subtree" End If adoCommand.CommandText = strQuery Set adoRecordset = adoCommand.Execute adoRecordset.MoveFirst intCount = 0 Do Until adoRecordset.EOF strPath = adoRecordset.Fields("ADsPath").Value Set objGroup = GetObject(strPath) For Each objField In adoRecordset.Fields If (VarType(objField) = (vbArray + vbVariant)) _ Then For Each strDN In objField.Value ' Escape any forward slash characters, "/", with the backslash ' escape character. All other characters that should be escaped are. strDN = Replace(strDN, "/", "\/") ' Check dictionary object for duplicates. 'If (objGroupList.Exists(strDN) = False) Then ' Add to dictionary object. 'objGroupList.Add strDN, True ' Bind to each group member, to find member's samAccountName Set objMember = GetObject("LDAP://" & strDN) ' Output group cn, group samaAccountName and group member's samAccountName. Wscript.Echo objMember.samAccountName intCount = intCount + 1 'End if Next End If Next adoRecordset.MoveNext Loop adoRecordset.Close ' If this is the last query, exit the Do While loop. If (blnLast = True) Then Exit Do End If ' If the previous query returned no members, then the previous ' query for the next 1000 members failed. Perform one more ' query to retrieve remaining members (less than 1000). If (intCount = 0) Then blnLast = True Else ' Setup to retrieve next 1000 members. intLowRange = intHighRange + 1 intHighRange = intLowRange + intRangeStep End If Loop

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• Why have or haven't you moved to ASP.NET MVC yet?

  - by Jason

  I find myself on the edge of trying out ASP.NET MVC but there is still "something" holding me back. Are you still waiting to try it, and if so, why? If you finally decided to use it, what helped you get over your hesitation? I'm not worried about it from a technical point of view; I know the pros and cons of web forms vs MVC. My concerns are more on the practical side. Will Microsoft continue to support ASP.NET MVC if they don't reach some critical threshold of developers/customers using it? Are customers willing to try ASP.NET MVC? Have you had to convince a customer to use it? How did that go? Are there major sites using ASP.NET MVC (besides SO)? Could you provide links if you have them? Did you try ASP.NET MVC and found yourself regretting it? If so, what do you regret? If you have any other concerns preventing you from using MVC.NET, what are they? If you had concerns but felt they were addressed and now use MVC.NET, could you list them as well? Thanks

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• ASP.Net/C# File Upload Progress Display

  - by Ioxp

  I am having a hard time figuring out how to do a "Please wait while file is uploading" message when the user submits the following form. So far the application works to specification with regards to checking files and uploading to the server. You will see some java script below, this is there to allow me to fake out the style of the file up load buttons so that it matches the rest of the site. I have tried to use the ASP.Net Ajax controls to do this however the updateprogress panel would not show up. In further reading it was explained that this has something to do with the Asynchronous transfer that the file upload control uses when you issue a PostedFile.SaveAs("filename") command. I also found a site that refereed to using an iframe to do the job. I'm not really sure if that's the best way to go about doing this or not so I'm asking you the professionals of stackoverflow for help to try and resolve this issue. I will be more than happy to post any spinets you need from my code to help me expedite a solution for this. <table border="0"> <tr> <td>File 1:&nbsp;</td> <td><div class="fileinputs"><input type="file" class="file" size="37" id="f1" runat="server" /></div></td> </tr> <tr> <td>File 2:&nbsp;</td> <td><div class="fileinputs"><input type="file" class="file" size="37" id="f2" runat="server" /></div></td> </tr> <tr> <td colspan="2" style="text-align:right;"><asp:ImageButton ID="ImageButton1" runat="server" ImageUrl="~/Images/Buttons/Upload_Files.gif" OnClick="Submit_Form" /></td> </tr> </table> <asp:Label ID="lblError" runat="server" Text=""></asp:Label> <script type="text/javascript"> var fakeFileUpload = document.createElement('div'); fakeFileUpload.className = 'fakefile'; var fakeInput = document.createElement('input'); fakeInput.style.width = '200px'; fakeFileUpload.appendChild(fakeInput); var image = document.createElement('img'); image.src='../Images/Buttons/Browse.gif'; fakeFileUpload.appendChild(image); var x = document.getElementsByTagName('input'); for (var i=0;i<x.length;i++) { if (x[i].type != 'file') continue; if (x[i].parentNode.className != 'fileinputs') continue; x[i].className = 'file hidden'; var clone = fakeFileUpload.cloneNode(true); x[i].parentNode.appendChild(clone); x[i].relatedElement = clone.getElementsByTagName('input')[0]; x[i].onchange = x[i].onmouseout = function () { this.relatedElement.value = this.value; } } </script>

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