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• Import Excel 2007 into SQL 2000 using Classic ASP and ADO

  - by jeff

  I have the following code from a legacy app which currently reads from an excel 2003 spreadsheet on a server, but I need this to run from my machine which uses excel 2007. When I debug on my machine ADO does not seem to be reading the spreadsheet. I have checked all file paths etc. and location of spreadsheet that is all fine. I've heard that you cannot use the jet db engine for excel 2007 anymore? Can someone confirm this? What do I need to do to get this to work? Please help! set obj_conn = Server.CreateObject("ADODB.Connection") obj_conn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _ "Data Source=" & Application("str_folder") & "CNS43.xls;" & _ "Extended Properties=""Excel 8.0;""" set obj_rs_cns43 = Server.CreateObject("ADODB.RecordSet") obj_rs_cns43.ActiveConnection = obj_conn obj_rs_cns43.CursorType = 3 obj_rs_cns43.LockType = 2 obj_rs_cns43.Source = "SELECT * FROM [CNS43$]" obj_rs_cns43.Open

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• ado.net Concurrency violation

  - by Bicubic

  My first time using ADO.net. Trying to make database of Users. First I populate my DataSet: adapter.AcceptChangesDuringFill = true; adapter.AcceptChangesDuringUpdate = true; adapter.Fill(dataset); To create a user: User user = new User(); user.datarow = dataset.Users.NewUsersRow(); user.Name = username; user.PasswordHash = GetHash(password); user.Rights = UserRights.None; users.Add(user); dataset.Users.AddUsersRow(user.datarow); adapter.Update(dataset); When a user property is modified: adapter.Update(dataset); Creation by itself is fine. If I take an existing user and make multiple changes, fine. Multiple creations in a row, fine. Creation followed by a property change, I get this: "Concurrency violation: the UpdateCommand affected 0 of the expected 1 records." Any ideas?

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• Integrated Windows authentication in IIS causing ADO.NET failure

  - by TrueWill

  We have a .NET 3.5 Web Service running under IIS. It must use identity impersonate="true" and Integrated Windows authentication in order to authenticate to third-party software. In addition, it connects to a SQL Server database using ADO.NET and SQL Server Authentication (specifying a fixed User ID and Password in the connection string). Everything worked fine until the database was moved to another SQL Server. Then the Web Service would throw the following exception: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) This error only occurs if identity impersonate is true in the Web.config. Again, the connection string hasn't changed and it specifies the user. I have tested the connection string and it works, both under the impersonated account and under the service account (and from both the remote machine and the server). What needs to be changed to get this to work with impersonation?

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• [VB.Net] TreeView update bug in the .net framework

  - by CFP

  Consider the following code: Dim Working As Boolean = False Private Sub TreeView1_AfterCheck(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView1.AfterCheck If Working Then Exit Sub Working = True e.Node.Checked = Not e.Node.Checked Working = False End Sub Private Sub TreeView1_MouseClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TreeView1.MouseClick If e.Button = Windows.Forms.MouseButtons.Right Then MsgBox("Checked = " & TreeView1.SelectedNode.Checked) End Sub Where TreeView1 is a TreeView added to the form, with CheckBoxes set to true and one node added. The code basically cancel any node checking occuring on the form. Single-clicking the top node to check it works well : your click is immediately canceled. Yet if you double-click the checkbox, it will display a tick. But verifying the check state through a right click will yield a Checked = False dialog. How come? Is it a bug (I'm using the latest .Net Framework 4.0, and he same occurs in 2.0), or am I doing something wrong here? Is there a work around? Thanks! EDIT: Additionally, the MouseDoubleClick event is not raised before you click once again.

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• Reordering columns (fields) in a ADO Recordset

  - by Sukotto

  I have a classic asp webpage written in vbscript that outputs the results from a third-party stored procedure. My user wants the page to display the columns of data in a different order than they come in from the database. Is there an easy and safe way to re-order the columns in an ADO recordset? I did not write this page and cannot change the SP. What is the minimum change I can make here to get the job done and not risk screwing up all the other stuff in the page? The code looks something like dim Conn, strSQL, RS Set Conn = Server.CreateObject("ADODB.Connection") Conn.Open ServerName Set strSQL = "EXEC storedProc @foo = " & Request("fooParam") 'This stored procedure returns a date column, an arbitrary ' ' number of data columns, and two summation columns. We ' ' want the two summation columns to move so they appear ' ' immediately after the data column ' Set RS = Server.CreateObject("ADODB.RecordSet") RS.ActiveConnection = Nothing RS.CursorLocation = adUseClient RS.CursorType = adOpenStatic RS.LockType = adLockBatchOptimistic RS.Open strSQL, Conn, adOpenDynamic, adLockOptimistic dim A ' ----- ' ' Insert some code here to move the columns of the RS around ' ' to suit the whim of my user ' ' ----- ' ' Several blocks of code that iterate over the RS and display it various ways ' RS.MoveFirst For A = 0 To RS.Fields.Count -1 ' do stuff ' Next ... RS.MoveFirst For A = 0 To RS.Fields.Count -1 ' do more stuff ' Next RS.Close : Set RS = Nothing Conn.Close : Set Conn = Nothing

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• HTTP 401.3 when PUT, DELETE to ADO.NET Data Service (.svc)

  - by Nate

  I have an ADO.NET Data Service (we'll call it service.svc). When I deploy it to an IIS 6 site with Integrated Windows Authentication turned on, all requests (GET, POST, PUT, and DELETE) work fine for me, because I am an administrator on the box. However, when a non-admin user hits the service, only GET and POST requests work. When they try a PUT or DELETE request, they get an HTTP 401.3 "Access is Denied" error: "Error message 401.3: You do not have permission to view this directory or page using the credentials you supplied (access denied due to Access Control Lists). Ask the web server's administrator to give you access to '...\service.svc'." If I give the "Authenticated Users" local group write access to the .svc file, everything works as it should, but I really don't want to do this (and don't think I should have to do this to get this to work). In fact, I'm confused as to why changing the file permissions would affect this at all, but it definitely seems to be the problem. I've found a couple of different suggestions to fix somewhat similar problems in the Microsoft forums (Here, and I would post more links, but am being told that new users can only post one link in a post), but none of the solutions help. Any help is much appreciated. I am certainly no IIS expert, and this one has got me stumped.

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• Use combobox value as query value (VC# 2k8 / ADO SQLITE)

  - by nicodevil

  Hi, I'm a newbie in VC# and ADO SQLITE... I'm trying to change the content of a combobox according to the value present in another one... My problem is here : SQLiteCommand cmd3 = new SQLiteCommand("select distinct(ACTION) from ACTION_LIST where CATEGORY='comboBox1.text'", conn2); What to use to do the job ? Here 'comboBox1.text' is see as a sentence not a variable... Here is the code : private void Form1_Load(object sender, EventArgs e) { using (SQLiteConnection conn1 = new SQLiteConnection(@"Data Source = Data\MRIS_DB_MASTER")) { conn1.Open(); SQLiteCommand cmd2 = new SQLiteCommand("select distinct(CATEGORY) from ACTION_LIST", conn1); SQLiteDataAdapter adapter1 = new SQLiteDataAdapter(cmd2); DataTable tbl1 = new DataTable(); adapter1.Fill(tbl1); comboBox1.DataSource = tbl1; comboBox1.DisplayMember = "CATEGORY"; adapter1.Dispose(); cmd2.Dispose(); } using (SQLiteConnection conn2 = new SQLiteConnection(@"Data Source = Data\MRIS_DB_MASTER")) { conn2.Open(); SQLiteCommand cmd3 = new SQLiteCommand("select distinct(ACTION) from ACTION_LIST where CATEGORY='comboBox1.text'", conn2); SQLiteDataAdapter adapter2 = new SQLiteDataAdapter(cmd3); DataTable tbl2 = new DataTable(); adapter2.Fill(tbl2); comboBox2.DataSource = tbl2; comboBox2.DisplayMember = "ACTION"; adapter2.Dispose(); cmd3.Dispose(); } } Thanks regards

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• launch powershell under .NET 4

  - by Emperor XLII

  I am updating a PowerShell script that manages some .NET assemblies. The script was written for assemblies built against .NET 2 (the same version of the framework that PowerShell runs with), but now needs to work with .NET 4 assemblies as well as .NET 2 assemblies. Since .NET 4 supports running applications built against older versions of the framework, it seems like the simplest solution is to launch PowerShell with the .NET 4 runtime when I need to run it against .NET 4 assemblies. How can I run PowerShell with the .NET 4 runtime?

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• ASP.NET vNext Blog Post Series

  - by Soe Tun

  Originally posted on: http://geekswithblogs.net/stun/archive/2014/06/04/asp.net-vnext-blog-post-series.aspxASP.NET vNext Blog Post Series ASP.NET vNext was announced at TechEd 2014, and I have been playing around with it a bit. ASP.NET vNext is an exciting and revolutionary change for the Microsoft .NET development platform. ASP.NET vNext is now open-source, and available on Github at this location: https://github.com/aspnet/Home. I want to start a blog post series on the ASP.NET vNext, and share my experience as I learn more about it. Keeping it simple Each blog post in the series will be short and simple so I can write them in a short amount of time, and keep it focused on one (at most two) topic(s) per post. My goal is to make it easy to absorb the information as there are a ton of great new stuff to cover. Many other people in the community have blogged about the key new features of the ASP.NET vNext. I will link to those blog posts in my next blog post. MVC 6 POCO Controller Today, I want to start this blog post series with a teaser code snippet for those developers familiar with the ASP.NET MVC. Getting Started with ASP.NET MVC 6 article from ASP.NET website shows how to write a lightweight POCO (plain-old CLR object) MVC Controller class in the upcoming ASP.NET MVC 6. However, it doesn't show us how to use the IActionResultHelper interface to render a View. This is how I wrote my POCO MVC Controller based on the https://github.com/aspnet/Home/blob/master/samples/HelloMvc/Controllers/HomeController.cs sample from Github.   Note that this may not be the best way to write it, but this is good enough for now. using Microsoft.AspNet.Mvc; using Microsoft.AspNet.Mvc.ModelBinding; using MvcSample.Web.Models; namespace MvcSample.Web { public class HomeController { IActionResultHelper html; IModelMetadataProvider mmp; public HomeController(IActionResultHelper h, IModelMetadataProvider mmp) { this.html = h; this.mmp = mmp; } public IActionResult Index() { var viewData = new ViewDataDictionary<User>(mmp) { Model = User() }; return html.View("Index", viewData); } public User User() { return new User { Name = "My name", Address = "My address" }; } } } Please feel free to give me feedback as this will greatly help me organize the blog posts in this series, and plan head. Thanks for reading!

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• ASP.NET MVC Html.RouteLink

  - by gilbertc

  I am trying to understand what this RouteLink does. Say, in my Global.asax, I have the default route for MVC routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = "" } // Parameter defaults ); and on a View page, I do <%=Html.RouteLink("Dinners", "Default", new { controller="Dinners", action="Details", id="1"} %> Why it does not generate the link /Dinners/Details/1 but thrown an exception? Thanks. Gil.

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• Ajax comments form in ASP.NET MVC2

  - by Artiom Chilaru

  I've been playing around with different aspects of MVC for some time now, and I've reached a situation where I'm not sure what would be the best way to solve a problem. I'm hoping that the SO community will help me out here :P I've seen a number of examples of Ajax.BeginForm on the internet, and it seems like a very nifty idea. E.g. you have a dropdown where you select a customer - and on selecting one it will load this client's details in some placeholder on the page. This works perfectly fine. But what to do if you want to tie in some validation in the box? Just hypothetically, imagine an article page, and user comments in the bottom. Below the comments area there's an ajax-y "Add comment" box. When a user adds a comment, it will appear in the comments area, below the last comment there. If I set the Ajax.BeginForm to Append the result of the call to the Comments area, it will work fine. But what if the data posted is not valid? Instead of appending a "successful" comment to the comments area I have to show the user validation errors. At this point I decided that the area INSIDE the Ajax.BeginForm will be inside a partial, and the form's submits will return this partial. Validation works fine. On each submit we reload the contents inside the form element. But how to add the successful comment to the top? Other things to consider: The comment form also has a "Preview" button. When the user clicks on Preview, I should load the rendered comment into a preview box. This will probably be inside the form area as well. I was thinking of using Json results instead. When the user submits the form, the server code will generate a Json object with a Success value, and html rendered partials as some properties. Something like { "success": true, "form": "<html form data>", "comment": "successful comment html to inject into the page" } This would be a perfect solution, except there's no way in MVC to render a partial into a string, inside the controller (separation of context, remember?). So.. what should I do then? Any "correct" way to implement this?

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• ASP.NET MVC Routing - Redirect to aspx?

  - by bmoeskau

  This seems like it should be easy, but for some reason I'm having no luck. I'm migrating an existing WebForms app to MVC, so I need to keep the root of the site pointing to my existing aspx pages for now and only apply routing to named routes. Here's what I have: public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.IgnoreRoute("{resource}.aspx/{*pathInfo}"); RouteTable.Routes.Add( "Root", new Route("", new DefaultRouteHandler()) ); routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Calendar2", action = "Index", id = "" } // Parameter defaults ); } So aspx pages should be ignored, and the default root url should be handled by this handler: public class DefaultRouteHandler : IRouteHandler { public IHttpHandler GetHttpHandler(RequestContext requestContext) { return System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath( "~/Dashboard/default.aspx", typeof(Page)) as IHttpHandler; } } This seems to work OK, but the resulting YPOD gives me this: Multiple controls with the same ID '__Page' were found. Trace requires that controls have unique IDs. which seems to imply that the page is somehow getting rendered twice. If I simply type in the url to my dashboard page directly it works fine (no routing, no error). I have no idea why the handler code would be doing anything differently. Bottom line -- I'd like to simply redirect the root url path to an aspx of my choosing -- can anyone shed some light?

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• ASP.NET MVC 2 - Html.DropDownList not working in an AJAX form

  - by Jacob

  I am trying to create an MVC 2 solution and I have run into the following problem: Index.aspx: <% using(Ajax.BeginForm("Forms", new AjaxOptions{UpdateTargetId="form", HttpMethod="POST"})) { %> <h3>Input: </h3> <p><%= Html.DropDownList("dropDown")%> <input type="submit" value="Select Mission" /></p> <% } %> HomeController.cs: public ActionResult Index() { var list = new [] { "item1", "item2", "item3" }; ViewData["dropDown"] = new SelectList(list); return View(); } public ActionResult Forms(string dropDown) { if (dropDown == null || dropDown == "") ViewData["txt"] = "Ahhh..."; else ViewData["txt"] = "You entered: " + dropDown; return PartialView("Form", dropDown); } Form.ascx: <%: ViewData["txt"] % This does not work. However, the whole thing does work if I use an Html.TextBox instead. For example: <div id="form"> <% using(Ajax.BeginForm("Forms", new AjaxOptions{UpdateTargetId="form", HttpMethod="POST"})) { %> <h3>Input: </h3> <%= Html.TextBox("textBox") %> <input type="submit" value="Select Mission" /></p> <% } %> </div> (and refactor the method in the controller so that it's argument is textBox instead of dropDown). My question is why does the AJAX form work for an Html.TextBox, but not for an Html.DropDownList, or what am I doing wrong? My only idea is that maybe the argument in the controller is not supposed to be of type string when using a DropDownList, but this is really just a guess. Thanks in advance.

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• ADO.NET Data Services Entity Framework request error when property setter is internal

  - by Jim Straatman

  I receive an error message when exposing an ADO.NET Data Service using an Entity Framework data model that contains an entity (called "Case") with an internal setter on a property. If I modify the setter to be public (using the entity designer), the data services works fine. I don’t need the entity "Case" exposed in the data service, so I tried to limit which entities are exposed using SetEntitySetAccessRule. This didn’t work, and service end point fails with the same error. public static void InitializeService(IDataServiceConfiguration config) { config.SetEntitySetAccessRule("User", EntitySetRights.AllRead); } The error message is reported in a browser when the .svc endpoint is called. It is very generic, and reads “Request Error. The server encountered an error processing the request. See server logs for more details.” Unfortunately, there are no entries in the System and Application event logs. I found this stackoverflow question that shows how to configure tracing on the service. After doing so, the following NullReferenceExceptoin error was reported in the trace log. Does anyone know how to avoid this exception when including an entity with an internal setter? Blockquote 131076 3 0 2 MOTOJIM http://msdn.microsoft.com/en-US/library/System.ServiceModel.Diagnostics.TraceHandledException.aspx Handling an exception. 685a2910-19-128703978432492675 System.NullReferenceException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Object reference not set to an instance of an object. at System.Data.Services.Providers.ObjectContextServiceProvider.PopulateMemberMetadata(ResourceType resourceType, MetadataWorkspace workspace, IDictionary2 entitySets, IDictionary2 knownTypes) at System.Data.Services.Providers.ObjectContextServiceProvider.PopulateMetadata(IDictionary2 knownTypes, IDictionary2 entitySets) at System.Data.Services.Providers.BaseServiceProvider.PopulateMetadata() at System.Data.Services.DataService1.CreateProvider(Type dataServiceType, Object dataSourceInstance, DataServiceConfiguration&amp; configuration) at System.Data.Services.DataService1.EnsureProviderAndConfigForRequest() at System.Data.Services.DataService1.ProcessRequestForMessage(Stream messageBody) at SyncInvokeProcessRequestForMessage(Object , Object[] , Object[] ) at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]&amp; outputs) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc&amp; rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc&amp; rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc&amp; rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc&amp; rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc&amp; rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc&amp; rpc) at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet) </StackTrace> <ExceptionString>System.NullReferenceException: Object reference not set to an instance of an object. at System.Data.Services.Providers.ObjectContextServiceProvider.PopulateMemberMetadata(ResourceType resourceType, MetadataWorkspace workspace, IDictionary2 entitySets, IDictionary2 knownTypes) at System.Data.Services.Providers.ObjectContextServiceProvider.PopulateMetadata(IDictionary2 knownTypes, IDictionary2 entitySets) at System.Data.Services.Providers.BaseServiceProvider.P

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• ASP.NET Membership with two providers cant use GetAllUsers method

  - by Bayonian

  Hi, I'm using two membership providers. When I declared a following statement Dim allUsers As MembershipUserCollection = Membership.Providers("CustomSqlRoleManager").GetAllUsers Then, it gave me this error message. Argument not specified for paramenter 'totalRecords' of 'Public MustOverride Function GetAllUsers(pageIndex as Integer, pageSize as Integer, ByRef totalRecords as Integer) As System.Web.Security.MembershipUserCollection' Then, I added what it asked for like this : Dim allUsers As MembershipUserCollection = Membership.Providers("CustomSqlRoleManager").GetAllUsers(1, 50, 100) I don't get anything in return. I debugged it and allUsers = Nothing. What's wrong the declaration above? Do I really have to provider the paramenters when calling Membership.Providers("CustomSqlRoleManager").GetAllUsers? Update 1 If, I used the statement below: Dim allUsers As MembershipUserCollection = Membership.Providers("MembershipRoleManager").GetAllUsers(0, 0, totalUser) I got this error message: The pageSize must be greater than zero. Parameter name: pageSize. [ArgumentException: The pageSize must be greater than zero. Parameter name: pageSize] System.Web.Security.SqlMembershipProvider.GetAllUsers(Int32 pageIndex, Int32 pageSize, Int32& totalRecords) +1848357 But it works if I provied the pageSize param: Dim pageSize As Integer = GetTotalNumberOfUser() Dim allUsers As MembershipUserCollection = Membership.Providers("MembershipRoleManager").GetAllUsers(0, pageSize, totalUser) This statment Dim pageSize As Integer = GetTotalNumberOfUser() returns the total counted record, it's already round trip to database, just to get the total number of users, because I need to provide the pageSize param value.

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• Asp.Net MVC - Rob Conery's LazyList - Count() or Count

  - by Adam

  I'm trying to create an html table for order logs for customers. A customer is defined as (I've left out a lot of stuff): public class Customer { public LazyList<Order> Orders { get; set; } } The LazyList is set when fetching a Customer: public Customer GetCustomer(int custID) { Customer c = ... c.Orders = new LazyList<Order>(_repository.GetOrders().ByOrderID(custID)); return c; } The order log model: public class OrderLogTableModel { public OrderLogTableModel(LazyList<Order> orders) { Orders = orders; Page = 0; PageSize = 25; } public LazyList<Order> Orders { get; set; } public int Page { get; set; } public int PageSize { get; set; } } and I pass in the customer.Orders after loading a customer. Now the log i'm trying to make, looks something like: <table> <tbody> <% int rowCount = ViewData.Model.Orders.Count(); int innerRows = rowCount - (ViewData.Model.Page * ViewData.Model.PageSize); foreach (Order order in ViewData.Model.Orders.OrderByDescending(x => x.StartDateTime) .Take(innerRows).OrderBy(x => x.StartDateTime) .Take(ViewData.Model.PageSize)) { %> <tr> <td> <%= order.ID %> </td> </tr> <% } %> </tbody> </table> Which works fine. But the problem is evaluating ViewData.Model.Orders.Count() literally takes about 10 minutes. I've tried with the ViewData.Model.Orders.Count property instead, and the results are the same - takes forever. I've also tried calling _repository.GetOrders().ByCustomerID(custID).Count() directly from the view and that executes perfectly within a few ms. Can anybody see any reason why using the LazyList to get a simple count would take so long? It seems like its trying to iterate through the list when getting a simple count.

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• .NET Build Process

  - by Nix

  All I am looking for the best free set of tools to be used in a MS Based build process. Checkout, Build, Package, Test, Deploy, etc. I know this question has been asked before but it was over 2 years ago, and in our world that is an eternity. I am looking to develop a pattern that is easily adapted to similar projects. Almost like a template/cookie cutter system. I am currently looking into using CruiseControl, Powershell, MSBuild suite of tools. If we choose to move to 4.0 will we have issues? Are there better alternatives? Limitations ? Or will these pretty much meet my needs. One piece that i am never happy with is the process of packaging. We actually have opted in the past to just use Visual Studio Deployment Projects but those are very* ancient and my fear is WIX will be too complicated for the people implementing it.

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• ASP.NET MVC 2 client-side validation rules not being created

  - by Brant Bobby

  MVC isn't generating the client-side validation rules for my viewmodel. The HTML just contains this: <script type="text/javascript"> //<![CDATA[ if (!window.mvcClientValidationMetadata) { window.mvcClientValidationMetadata = []; } window.mvcClientValidationMetadata.push({"Fields":[],"FormId":"form0","ReplaceValidationSummary":false}); //]]> </script> Note that Fields[] is empty! My view is strongly-typed and uses the new strongly-typed HTML helpers (TextBoxFor(), etc). View Model / Domain Model public class ItemFormViewModel { public Item Item { get; set; } [Required] [StringLength(100)] public string Whatever { get; set; } // for demo } [MetadataType(typeof(ItemMetadata))] public class Item { public string Name { get; set; } public string SKU { get; set; } public int QuantityRequired { get; set; } // etc. } public class ItemMetadata { [Required] [StringLength(100)] public string Name { get; set; } [Required] [StringLength(50)] public string SKU { get; set; } [Range(0, Int32.MaxValue)] public int QuantityRequired { get; set; } // etc. } (I know I'm using a domain model as my / as part of my view model, which isn't a good practice, but disregard that for now.) View <%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<ItemFormViewModel>" %> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <h2>Editing item: <%= Html.Encode(Model.Item.Name) %></h2> <% Html.EnableClientValidation(); %> <%= Html.ValidationSummary("Could not save the item.") %> <% using (Html.BeginForm()) { %> <%= Html.TextBoxFor(model => model.Item.Name) %> <%= Html.TextBoxFor(model => model.Item.SKU) %> <%= Html.TextBoxFor(model => model.Item.QuantityRequired) %> <%= Html.HiddenFor(model => model.Item.ItemID) %> <%= Html.TextBox("Whatever", Model.Whatever) %> <input type="submit" value="Save" /> <% } %> </asp:Content> I included the Whatever property on the view model because I suspected that MVC wasn't recursively inspecting the sub-properties of ItemFormViewModel.Item, but even that isn't being validated? I've even tried delving into the MVC framework source code but have come up empty. What could be going on?

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• help me with asp.net mvc 2 custom validation attribute

  - by Omu

  I'm trying to write a validation attribute that is going to check that at least one of the specified properties is true [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)] public sealed class AtLeastOneTrueAttribute : ValidationAttribute { private const string DefaultErrorMessage = "select at least one"; public AtLeastOneTrueAttribute(params string[] props) : base(DefaultErrorMessage) { this.props = props; } private readonly string[] props; public override string FormatErrorMessage(string name) { return DefaultErrorMessage; } public override bool IsValid(object value) { var properties = TypeDescriptor.GetProperties(value); return props.Any(p => (bool) properties.Find(p, true).GetValue(value)); } } now when I'm trying to use I can't really get specify the props after the fir , the intellisence shows me that I'm entering the ErrorMessage and only the first string is the params string[] props

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• Altering the ASP.NET MVC 2 ActionResult on HTTP post

  - by Inge Henriksen

  I want to do some processing on a attribute before returning the view. If I set the appModel.Markup returned in the HttpPost ActionResult method below to "modified" it still says "original" on the form. Why cant I modify my attribute in a HttpGet ActionResult method? [HttpGet] public ActionResult Index() { return View(new MyModel { Markup = "original" }); } [HttpPost] public ActionResult Index(MyModel appModel) { return View(new MyModel { Markup = "modified" }); }

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• Asp.net mvc json

  - by user310657

  Hi, I am working on a mvc project, and having problem with json. i have created a demo project with list of colors public JsonResult GetResult() { List strList = new List(); strList.Add("white"); strList.Add("blue"); strList.Add("black"); strList.Add("red"); strList.Add("orange"); strList.Add("green"); return this.Json(strList); } i am able to get these on my page, but when i try to delete one color, that is when i send the following using jquery function deleteItem(item) { $.ajax({ type: "POST", url: "/Home/Delete/white", data: "{}", contentType: "application/json; charset=utf-8", success: ajaxCallSucceed, dataType: "json", failure: ajaxCallFailed }); } the controler action public JsonResult Delete(string Color) {} Color always returns null, even if i have specified "/Home/Delete/white" in the url. i know i am doing something wrong or missing something, but not able to find out what. please can any one guide me in the right direction.

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• Asp.net: Replace GenericPrincipal

  - by Pickels

  Hello, I was wondering what the best way is to replace the genericPrincipal with my own CustomGenericPrincipal. At the moment I have something like this but I aint sure if it's correct. protected void Application_AuthenticateRequest(Object sender, EventArgs e) { HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName]; if (authCookie != null) { FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value); var identity = new CustomIdentity(authTicket); var principal = new CustomPrincipal(identity); Context.User = principal; } else { //Todo: check if this is correct var genericIdentity = new CustomGenericIdentity(); Context.User = new CustomPrincipal(genericIdentity); } } I need to replace it because I need a Principal that implements my ICustomPrincipal interface because I am doing the following with Ninject: Bind<ICustomPrincipal>().ToMethod(x => (ICustomPrincipal)HttpContext.Current.User) .InRequestScope(); So what's the best way to replace the GenericPrincipal? Thanks in advance, Pickels

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• remove dead routes in asp.net mvc 2

  - by loviji

  hello, i have get a problem. The request for 'Account' has found the following matching controllers: uqs.Controllers.Admin.AccountController MvcApplication1.Controllers.AccountController I search in project by Visual Studio MvcApplication1.Controllers.AccountController to remove it. but can't find match. So, I try to register a route: routes.MapRoute( "LogAccount", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "AccountController", action = "LogOn", id = "" }, new string[] { "uqs.Controllers.Admin" } // Parameter defaults ); But can't solve problem. Multiple types were found that match the controller named 'Account'. How I can Remove MvcApplication1.Controllers.AccountController. or fix this problem? Thanks.

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• Calling ASP.NET MVC Controller explicitly via AJAX

  - by effkay

  I know that I can use following piece of code to refresh a div: <%=Ajax.ActionLink( "Update", "Administration", new AjaxOptions { UpdateTargetId = "grid", LoadingElementId = "grid-wait" } ) %> But this creates a link; user will have to click on it to get the view refreshed. How can I make it automatic, i.e., like say if I want the grid to be refreshed after every five seconds?

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• ASP.NET with MS Chart disable the vertical line

  - by Bayonian

  Hi, I have a graph created with MS Chart like the following picture. As you can see the vertical lines are messed up with value of the top of each bar. Here's the mark-up for the graph: <asp:Chart ID="chtNBAChampionships" runat="server"> <Series> <asp:Series Name="Championships" YValueType="Int32" ChartType="Column" ChartArea="MainChartArea" IsValueShownAsLabel="true"> <Points> <asp:DataPoint AxisLabel="Celtics" YValues="17" /> <asp:DataPoint AxisLabel="Lakers" YValues="15" /> <asp:DataPoint AxisLabel="Bulls" YValues="6" /> <asp:DataPoint AxisLabel="Spurs" YValues="4" /> <asp:DataPoint AxisLabel="76ers" YValues="3" /> <asp:DataPoint AxisLabel="Pistons" YValues="3" /> <asp:DataPoint AxisLabel="Warriors" YValues="3" /> </Points> </asp:Series> </Series> <ChartAreas> <asp:ChartArea Name="MainChartArea"> </asp:ChartArea> </ChartAreas> </asp:Chart> I don't want the display the vertical line because it's messed up with the value on top of the each bar. How can I disable the vertical line? Thank you.

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