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  • Logging and Error handling in asp.net

    - by parminder
    Hi Experts, I have a website running now. I have to implement some logging routines as well as some handler for unhandeled exceptions. I was looking at ELMAH also which seems good to me. I need something very light and easy to use. Can someone recommend any other option I can choose from. Thanks Parminder

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  • ASP NET MVC (loading data from database)

    - by rah.deex
    hi experts, its me again... i have some code like this.. using System; using System.Collections.Generic; using System.Linq; using System.Web; namespace MvcGridSample.Models { public class CustomerService { private List<SVC> Customers { get { List<SVC> customers; if (HttpContext.Current.Session["Customers"] != null) { customers = (List<SVC>) HttpContext.Current.Session["Customers"]; } else { //Create customer data store and save in session customers = new List<SVC>(); InitCustomerData(customers); HttpContext.Current.Session["Customers"] = customers; } return customers; } } public SVC GetByID(int customerID) { return this.Customers.AsQueryable().First(customer => customer.seq_ == customerID); } public IQueryable<SVC> GetQueryable() { return this.Customers.AsQueryable(); } public void Add(SVC customer) { this.Customers.Add(customer); } public void Update(SVC customer) { } public void Delete(int customerID) { this.Customers.RemoveAll(customer => customer.seq_ == customerID); } private void InitCustomerData(List<SVC> customers) { customers.Add(new SVC { ID = 1, FirstName = "John", LastName = "Doe", Phone = "1111111111", Email = "[email protected]", OrdersPlaced = 5, DateOfLastOrder = DateTime.Parse("5/3/2007") }); customers.Add(new SVC { ID = 2, FirstName = "Jane", LastName = "Doe", Phone = "2222222222", Email = "[email protected]", OrdersPlaced = 3, DateOfLastOrder = DateTime.Parse("4/5/2008") }); customers.Add(new SVC { ID = 3, FirstName = "John", LastName = "Smith", Phone = "3333333333", Email = "[email protected]", OrdersPlaced = 25, DateOfLastOrder = DateTime.Parse("4/5/2000") }); customers.Add(new SVC { ID = 4, FirstName = "Eddie", LastName = "Murphy", Phone = "4444444444", Email = "[email protected]", OrdersPlaced = 1, DateOfLastOrder = DateTime.Parse("4/5/2003") }); customers.Add(new SVC { ID = 5, FirstName = "Ziggie", LastName = "Ziggler", Phone = null, Email = "[email protected]", OrdersPlaced = 0, DateOfLastOrder = null }); customers.Add(new SVC { ID = 6, FirstName = "Michael", LastName = "J", Phone = "666666666", Email = "[email protected]", OrdersPlaced = 5, DateOfLastOrder = DateTime.Parse("12/3/2007") }); } } } those codes is an example that i've got from the internet.. in that case, the data is created and saved in session before its shown.. the things that i want to ask is how if i want to load the data from table? i'am a newbie here.. please help :) thank b4 for advance..

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  • how can i control shockwaveflash object BGColor with colordialogue in vb.net

    - by testkhan
    i have the following code Private Sub select_color_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles select_color.Click Dim ocolor As New ColorDialog ocolor.ShowDialog() Me.BackColor = ocolor.Color End Sub and it changes the background color of form to the color i select in colordialogue... now i want to change the BGColor of shockwaveobject in this way...however i can change the BGColor of shockwave object manually in toolbox but i want to change it by color dialogue how can i do that...

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  • Storing links to internal content pages in ASP.NET MVC

    - by mare
    I'm using a route like this routes.MapRoute( "PageBySlug", RouteType.Regular, "{slug}", new {controller = "Page", action = "Display", slug = "Default"}, null ); to map request to ~/Some-Page-Slug to ~/Page/Display/Some-Page-Slug. When adding content, user can choose to link to existing pages to create references and I then store those links in this format in the datastore: "/Some-Page-Slug". When I run the app in Cassini and pull the link out from datastore and attach it to A tag it looks like this http://localhost:93229/Some-Page-Slug and this link works. But when running the application in virtual directory under some website in IIS, the attached link generates this URL http://localhost/Some-Page-Slug, when it should be http://localhost/virtualdir/Some-Page-Slug. Of course, this generates 404 error. How can I solve this to be universally useful and working under all circumstances? Should I store it differently in the database or should I transform it into correct form in my Views at runtime and how to do that?

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  • Delete Duplicate records from large csv file C# .Net

    - by Sandhurst
    I have created a solution which read a large csv file currently 20-30 mb in size, I have tried to delete the duplicate rows based on certain column values that the user chooses at run time using the usual technique of finding duplicate rows but its so slow that it seems the program is not working at all. What other technique can be applied to remove duplicate records from a csv file Here's the code, definitely I am doing something wrong DataTable dtCSV = ReadCsv(file, columns); //columns is a list of string List column DataTable dt=RemoveDuplicateRecords(dtCSV, columns); private DataTable RemoveDuplicateRecords(DataTable dtCSV, List<string> columns) { DataView dv = dtCSV.DefaultView; string RowFilter=string.Empty; if(dt==null) dt = dv.ToTable().Clone(); DataRow row = dtCSV.Rows[0]; foreach (DataRow row in dtCSV.Rows) { try { RowFilter = string.Empty; foreach (string column in columns) { string col = column; RowFilter += "[" + col + "]" + "='" + row[col].ToString().Replace("'","''") + "' and "; } RowFilter = RowFilter.Substring(0, RowFilter.Length - 4); dv.RowFilter = RowFilter; DataRow dr = dt.NewRow(); bool result = RowExists(dt, RowFilter); if (!result) { dr.ItemArray = dv.ToTable().Rows[0].ItemArray; dt.Rows.Add(dr); } } catch (Exception ex) { } } return dt; }

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  • DataAnnotation attributes buddy class strangeness - ASP.NET MVC

    - by JK
    Given this POCO class that was automatically generated by an EntityFramework T4 template (has not and can not be manually edited in any way): public partial class Customer { [Required] [StringLength(20, ErrorMessage = "Customer Number - Please enter no more than 20 characters.")] [DisplayName("Customer Number")] public virtual string CustomerNumber { get;set; } [Required] [StringLength(10, ErrorMessage = "ACNumber - Please enter no more than 10 characters.")] [DisplayName("ACNumber")] public virtual string ACNumber{ get;set; } } Note that "ACNumber" is a badly named database field, so the autogenerator is unable to generate the correct display name and error message which should be "Account Number". So we manually create this buddy class to add custom attributes that could not be automatically generated: [MetadataType(typeof(CustomerAnnotations))] public partial class Customer { } public class CustomerAnnotations { [NumberCode] // This line does not work public virtual string CustomerNumber { get;set; } [StringLength(10, ErrorMessage = "Account Number - Please enter no more than 10 characters.")] [DisplayName("Account Number")] public virtual string ACNumber { get;set; } } Where [NumberCode] is a simple regex based attribute that allows only digits and hyphens: [AttributeUsage(AttributeTargets.Property)] public class NumberCodeAttribute: RegularExpressionAttribute { private const string REGX = @"^[0-9-]+$"; public NumberCodeAttribute() : base(REGX) { } } NOW, when I load the page, the DisplayName attribute works correctly - it shows the display name from the buddy class not the generated class. The StringLength attribute does not work correctly - it shows the error message from the generated class ("ACNumber" instead of "Account Number"). BUT the [NumberCode] attribute in the buddy class does not even get applied to the AccountNumber property: foreach (ValidationAttribute attrib in prop.Attributes.OfType<ValidationAttribute>()) { // This collection correctly contains all the [Required], [StringLength] attributes // BUT does not contain the [NumberCode] attribute ApplyValidation(generator, attrib); } Why does the prop.Attributes.OfType<ValidationAttribute>() collection not contain the [NumberCode] attribute? NumberCode inherits RegularExpressionAttribute which inherits ValidationAttribute so it should be there. If I manually move the [NumberCode] attribute to the autogenerated class, then it is included in the prop.Attributes.OfType<ValidationAttribute>() collection. So what I don't understand is why this particular attribute does not work in when in the buddy class, when other attributes in the buddy class do work. And why this attribute works in the autogenerated class, but not in the buddy. Any ideas? Also why does DisplayName get overriden by the buddy, when StringLength does not?

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  • How can I resolve this custom error redirect in ASP.NET

    - by D. Veloper
    I want to redirect all url errors The url I want to cath is ~/bla/foo It should redirect to ~/error404.aspx bla exists as a folder. foo does not exist. I already set the webconfig to point to my error but I just doesn't work. I get this error: Server Error in application /. -------------------------------------------------- ------------------------------ The source can not be found. Description: HTTP 404. Perhaps you are looking for the source (or a dependency thereof) removed or is temporarily unavailable or has changed its name. Check the spelling of the URL. Requested URL: / bla/foo.asox I google translate this error cuz VS here is language specific. What can I do to resolve this??? I want to point to ~/error404.aspx

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  • Multi-Threading in .NET

    - by AIC
    Hi all.. I wrote this program, that is supposed to read about 5000 email address and send an pre-defined html mail. I am using the background worker component. The problem is this: I have wired up the method who is supposed to send the mail. But I am calling another method that is supposed to append the body html to the salutation, like public string GiveMeFullHtml(string personname) ... "Dear Mr. John Doe" + HTML ... It seems that when it hits this method call, operation completes. IUt only sends the first mail and completes. I think because the HTML string method is on another thread or sth like that. Can you give me a little insight. Do I have to get everything done in the very same method when using multi-threading? Thanks in advance

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  • What is the header of an array in .NET

    - by Thomas
    Hi all, I have a little bit seen the representation of an array in memory with Windbg and SOS plugin. Here it is the c# : class myobj{ public int[] arr; } class Program{ static void Main(string[] args){ myobj o = new myobj(); o.arr = new int[7]; o.arr[0] = 0xFFFFFF; o.arr[1] = 0xFFFFFF; o.arr[2] = 0xFFFFFF; o.arr[3] = 0xFFFFFF; o.arr[4] = 0xFFFFFF; } } I break at final of Main, and I observ : 0:000> !clrstack -l OS Thread Id: 0xc3c (0) ESP EIP 0015f0cc 0043d1cf test.Program.Main(System.String[]) LOCALS: 0x0015f0d8 = 0x018a2f58 0:000 !do 0x018a2f58 Name: test.myobj MethodTable: 0026309c EEClass: 00261380 Size: 12(0xc) bytes (C:\Users\admin\Documents\Visual Studio 2008\Projects\test\test\bin\Debug\test.exe) Fields: MT Field Offset Type VT Attr Value Name 01324530 4000001 4 System.Int32[] 0 instance 018a2f64 tab 0:000 dd 018a2f64 018a2f64 01324530 00000007 00ffffff 00ffffff 018a2f74 00ffffff 00ffffff 00ffffff 00000000 018a2f84 00000000 00000000 00000000 00000000 018a2f94 00000000 00000000 00000000 00000000 018a2fa4 00000000 00000000 00000000 00000000 018a2fb4 00000000 00000000 00000000 00000000 018a2fc4 00000000 00000000 00000000 00000000 018a2fd4 00000000 00000000 00000000 00000000 I can see that the header contains the size of the array (00000007) but my question is : what is the value 01324530 ? Thanks !

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  • Getting identity from Ado.Net Update command

    - by rboarman
    My scenario is simple. I am trying to persist a DataSet and have the identity column filled in so I can add child records. Here's what I've got so far: using (SqlConnection connection = new SqlConnection(connStr)) { SqlDataAdapter adapter = new SqlDataAdapter("select * from assets where 0 = 1", connection); adapter.MissingMappingAction = MissingMappingAction.Passthrough; adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey; SqlCommandBuilder cb = new SqlCommandBuilder(adapter); var insertCmd = cb.GetInsertCommand(true); insertCmd.Connection = connection; connection.Open(); adapter.InsertCommand = insertCmd; adapter.InsertCommand.CommandText += "; set ? = SCOPE_IDENTITY()"; adapter.InsertCommand.UpdatedRowSource = UpdateRowSource.OutputParameters; var param = new SqlParameter("RowId", SqlDbType.Int); param.SourceColumn = "RowId"; param.Direction = ParameterDirection.Output; adapter.InsertCommand.Parameters.Add(param); SqlTransaction transaction = connection.BeginTransaction(); insertCmd.Transaction = transaction; try { assetsImported = adapter.Update(dataSet.Tables["Assets"]); transaction.Commit(); } catch (Exception ex) { transaction.Rollback(); // Log an error } connection.Close(); } The first thing that I noticed, besides the fact that the identity value is not making its way back into the DataSet, is that my change to add the scope_identity select statement to the insert command is not being executed. Looking at the query using Profiler, I do not see my addition to the insert command. Questions: 1) Why is my addition to the insert command not making its way to the sql being executed on the database? 2) Is there a simpler way to have my DataSet refreshed with the identity values of the inserted rows? 3) Should I use the OnRowUpdated callback to add my child records? My plan was to loop through the rows after the Update() call and add children as needed. Thank you in advance. Rick

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  • Asp.net mvc - trying to display images pulled from db \

    - by Trey Carroll
    //Inherits="System.Web.Mvc.ViewPage<FilmFestWeb.Models.ListVideosViewModel>" <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <h2>ListVideos</h2> <% foreach(BusinessObjects.Video vid in Model.VideoList){%> <div class="videoBox"> <%= Html.Encode(vid.Name) %> <img src="<%= vid.ThumbnailImage %>" /> </div> <%} %> </asp:Content> //ListVideosViewModel public class ListVideosViewModel { public IList<Video> VideoList { get; set; } } //Video public class Video { public long VideoId { get; set; } public long TeamId { get; set; } public string Name { get; set; } public string Tags { get; set; } public string TeamMembers { get; set; } public string TranscriptFileName { get; set; } public string VideoFileName { get; set; } public int TotalNumRatings { get; set; } public int CumulativeTotalScore { get; set; } public string VideoUri { get; set; } public Image ThumbnailImage { get; set; } } I am getting the "red x" that I usually associate with image file not found. I have verified that my database table shows after the stored proc that uploads the image executes. Any insight or advice would be greatly appreciated.

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  • .NET CF on Windows CE - problem with filtering system messages

    - by mack369
    Hello, I'm trying to get every windows message that tells that the user has touched the screen. It works everywhere, except the button, when it is disabled. It seems that the application doesn't get any message when clicked on disabled control. I'm using OpenNetCF Application2 class for filtering messages: Application2.AddMessageFilter(Device.PowerManager); Application2.Run(new MainForm()); PowerManager class contains a following method (as required by IMessageFilter interface): public bool PreFilterMessage(ref Microsoft.WindowsCE.Forms.Message m) { log.DebugFormat("windows message {0} - 0x{0:X}", m.Msg); if (m.Msg == 0x0201 || m.Msg == 0x8001 || m.Msg == 0x0005) { return this.ResetPowerManager(); } return false; } in the log file there is no indication of a windows message when clicking on disabled button. I'm wondering how is it possible and how can I get this message.

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  • asp.net labels and asp.net textboxes are not lining up correctly?

    - by Xaisoft
    My Registration page currently looks like the following: The current styling I have for the above is image is: <style type="text/css"> #contactinfo label { float: left; width: 10em; margin-right: 0.5em; text-align: right; font-size: 14px; } #contactinfo p { padding: 5px; } #contactinfo input[type="text"], input[type="password"] { height: 1.5em; } #contactinfo select { padding: 0.25em; } #contactinfo input[type="text"]:focus, input[type="password"]:focus { background-color: #FFFFE0; } #contactinfo .update { margin-left: 12.5em; } #contactinfo .error { background-color: transparent; } #contactinfo .longtextbox { width: 20em; } #contactinfo .shorttextbox { width: 5em; } </style> and the markup is <div id="contactinfo"> <p> <asp:Label runat="server" AssociatedControlID="txtEmail">Email </asp:Label> <asp:TextBox ID="txtEmail" runat="server" CssClass="longtextbox" /> </p> <p> <asp:Label runat="server" AssociatedControlID="txtFirstName">First Name </asp:Label> <asp:TextBox ID="txtFirstName" runat="server" ValidationGroup="AccountValidation" /> <asp:RequiredFieldValidator runat="server" ControlToValidate="txtFirstName" Text="First Name is required." ValidationGroup="AccountValidation" CssClass="error"> </asp:RequiredFieldValidator> </p> <p> <asp:Label runat="server" AssociatedControlID="txtLastName">Last Name </asp:Label> <asp:TextBox ID="txtLastName" runat="server" ValidationGroup="AccountValidation" /> <asp:RequiredFieldValidator runat="server" ControlToValidate="txtLastName" Text="Last Name is required." ValidationGroup="AccountValidation" CssClass="error"> </asp:RequiredFieldValidator> </p> <p> <asp:Label runat="server" AssociatedControlID="txtBusinessName">Business Name </asp:Label> <asp:TextBox ID="txtBusinessName" runat="server" CssClass="longtextbox" ValidationGroup="AccountValidation" /> <asp:RequiredFieldValidator runat="server" ControlToValidate="txtBusinessName" Text="Business Name is required." ValidationGroup="AccountValidation" CssClass="error"> </asp:RequiredFieldValidator> </p> <p> <asp:Label runat="server" AssociatedControlID="txtPhone">Phone </asp:Label> <asp:TextBox ID="txtPhone" runat="server" ValidationGroup="AccountValidation" /> </p> <p> <asp:Label runat="server" AssociatedControlID="txtAddress">Address </asp:Label> <asp:TextBox ID="txtAddress" runat="server" CssClass="longtextbox" ValidationGroup="AccountValidation" /> <asp:RequiredFieldValidator runat="server" ControlToValidate="txtAddress" Text="Address is required." ValidationGroup="AccountValidation" CssClass="error"></asp:RequiredFieldValidator> </p> <p> <asp:Label runat="server" AssociatedControlID="txtCity">City </asp:Label><asp:TextBox ID="txtCity" runat="server" ValidationGroup="AccountValidation" /> <asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ControlToValidate="txtCity" Text="City is required." ValidationGroup="AccountValidation" CssClass="error"> </asp:RequiredFieldValidator> </p> <p> <asp:Label runat="server" AssociatedControlID="ddlState">State </asp:Label> <asp:DropDownList ID="ddlState" runat="server" DataSourceID="dsStates" DataTextField="Name" DataValueField="Id"> </asp:DropDownList> </p> <p> <asp:Label runat="server" AssociatedControlID="txtZipcode">Zipcode</asp:Label> <asp:TextBox ID="txtZipCode" runat="server" CssClass="shorttextbox" ValidationGroup="AccountValidation" /> </p> </div> As you can see from above, I have every label field pair wrapped in a p tag so it breaks to the next line, but I am not sure if I need to do this. I want to get city, state, and zip all on the same line, but as soon as I move all the labels and inputs for city,state,zip into one p tag, it looks like the following and I don't know how to fix it.

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  • Using sqldatareader in asp.net

    - by Phil
    I have this code to get data; s = "select documents.filename, documents.description, documents.filesize from documents, contentdocuments, content where contentdocuments.contentid = content.id and content.id = @contentid and contentdocuments.documentsid = documents.id ORDER BY documents.description" x = New SqlCommand(s, c) x.Parameters.Add("@contentid", SqlDbType.Int) x.Parameters("@contentid").Value = contentid c.Open() r = x.ExecuteReader If r.Read Then DownloadsRepeater.DataSource = r DownloadsRepeater.DataBind() **imagepath = "<img src='images/'" & getimage(r("filename")) & " border='0'** align='absmiddle'" End If c.Close() r.Close() The problem is on the line; imagepath = "<img src='images/'" & getimage(r("filename")) & " The error is; Invalid attempt to read when no data is present. How can I check to make sure data is present and get rid of this error? I thought the 'if r.read' did this? Thanks :EDIT: Function getimage(ByVal strin As String) As String If strin > "" Then dotpos = InStrRev(strin, ".") ext = Right(strin, Len(strin) - dotpos) getimage = ext & ".gif" End If Return getimage End Function

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  • Switching AM/PM in ASP.NET AJAX MaskedEdit localization

    - by Greg
    The sample page for the MaskedEdit says "Tip: Type 'A' or 'P' to switch AM/PM". Are these keys hardcoded? Does the control automatically change itself for cultures that use 12-hour designators that don't start with A or P? Or is just broken for those? example: Arabic (Saudi Arabia) - AM: ? Arabic (Saudi Arabia) - PM: ? Chinese (Taiwan) - AM: ?? Chinese (Taiwan) - PM: ?? Greek (Greece) - AM: pµ Greek (Greece) - PM: µµ Korean (Korea) - AM: ?? Korean (Korea) - PM: ?? Albanian (Albania) - AM: PD Albanian (Albania) - PM: MD Persian (Iran) - AM: ?.? Persian (Iran) - PM: ?.? Vietnamese (Vietnam) - AM: SA Vietnamese (Vietnam) - PM: CH Afrikaans (South Africa) - PM: nm Punjabi (India) - AM: ????? Punjabi (India) - PM: ??? Syriac (Syria) - AM: ?.? Syriac (Syria) - PM: ?.? If this control doesn't handle this situation, does anyone know of a control that does?

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  • Bullet indents in PowerPoint 2007 compatibility mode via .NET interop issue

    - by L. Shaydariv
    Hello. I've got a really difficult bug and I can't see the fix. The subject drives me insane for real for a long time. Let's consider the following scenario: 1) There is a PowerPoint 2003 presentation. It contains the only slide and the only shape, but the shape contains a text frame including a bulleted list with a random textual representation structure. 2) There is a requirement to get bullet indents for every bulletted paragraph using PowerPoint 2007. I can satisfy the requirement opening the presentation in the compatibility mode and applying the following VBA script: With ActivePresentation Dim sl As Slide: Set sl = .Slides(1) Dim sh As Shape: Set sh = sl.Shapes(1) Dim i As Integer For i = 1 To sh.TextFrame.TextRange.Paragraphs.Count Dim para As TextRange: Set para = sh.TextFrame.TextRange.Paragraphs(i, 1) Debug.Print para.Text; para.indentLevel, sh.TextFrame.Ruler.Levels(para.indentLevel).FirstMargin Next i End With that produces the following output: A 1 0 B 1 0 C 2 24 D 3 60 E 5 132 Obviously, everything is perfect indeed: it has shown the proper list item text, list item level and its bullet indent. But I can't see the way of how I can reach the same result using C#. Let's add a COM-reference to Microsoft.Office.Interop.PowerPoint 2.9.0.0 (taken from MSPPT.OLB, MS Office 12): // presentation = ...("presentation.ppt")... // a PowerPoint 2003 presentation Slide slide = presentation.Slides[1]; Shape shape = slide.Shapes[1]; for (int i = 1; i<=shape.TextFrame.TextRange.Paragraphs(-1, -1).Count; i++) { TextRange paragraph = shape.TextFrame.TextRange.Paragraphs(i, 1); Console.WriteLine("{0} {1} {2}", paragraph.Text, paragraph.IndentLevel, shape.TextFrame.Ruler.Levels[paragraph.IndentLevel].FirstMargin); } Oh, man... What's it? I've got problems here. First, the paragraph.Text value is trimmed until the '\r' character is found (however paragraph.Text[0] really returns the first character O_o). But it's ok, I can shut my eyes to this. But... But, second, I can't understand why the first margins are always zero and it does not matter which level they belong to. They are always zero in the compatibility mode... It's hard to believe it... :) So is there any way to fix it or just to find a workaround? I'd like to accept any help regarding to the solution of the subject. I can't even find any article related to the issue. :( Probably you have ever been face to face with it... Or is it just a bug with no fix and must it be reported to Microsoft? Thanks you.

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  • How to add items rows to a listview WPF and VB.net

    - by leviatan1001
    Im getting crazy with it. It is so easy in windows form, but in wpf it seems to be different. Every example i find is in C# and i cant addapt it. Well, this is the code i have. Atm, i have just defined the columns: 'diseño de las columnas Dim item As ListViewItem = New ListViewItem Dim Mi_Lista As GridView = New GridView Mi_Lista.AllowsColumnReorder = True Dim cine As New GridViewColumn() Dim Si3d As New GridViewColumn cine.Header = "Cine" cine.DisplayMemberBinding = New Binding("Cine") Si3d.DisplayMemberBinding = New Binding("si3D") cine.Width = 140 Si3d.Header = "3D" Si3d.Width = 50 Mi_Lista.Columns.Add(cine) Mi_Lista.Columns.Add(Si3d) Thanks in advance.

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  • Advantages/Disadvantages of different implementations for Comparing Objects using .NET

    - by Kevin Crowell
    This questions involves 2 different implementations of essentially the same code. First, using delegate to create a Comparison method that can be used as a parameter when sorting a collection of objects: class Foo { public static Comparison<Foo> BarComparison = delegate(Foo foo1, Foo foo2) { return foo1.Bar.CompareTo(foo2.Bar); }; } I use the above when I want to have a way of sorting a collection of Foo objects in a different way than my CompareTo function offers. For example: List<Foo> fooList = new List<Foo>(); fooList.Sort(BarComparison); Second, using IComparer: public class BarComparer : IComparer<Foo> { public int Compare(Foo foo1, Foo foo2) { return foo1.Bar.CompareTo(foo2.Bar); } } I use the above when I want to do a binary search for a Foo object in a collection of Foo objects. For example: BarComparer comparer = new BarComparer(); List<Foo> fooList = new List<Foo>(); Foo foo = new Foo(); int index = fooList.BinarySearch(foo, comparer); My questions are: What are the advantages and disadvantages of each of these implementations? What are some more ways to take advantage of each of these implementations? Is there a way to combine these implementations in such a way that I do not need to duplicate the code? Can I achieve both a binary search and an alternative collection sort using only 1 of these implementations?

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  • asp.net ajax toolkit combobox doesn't work in hidden div

    - by sam
    I have a combobox inside a hidden div which I use css display = none to make it invisible, but when I make the div visible by setting display = block, the combobox just show the input and its button and ul list all have css as display = 'none', visibility ='hidden'. I can tell it is done by combobox inbuild javascript because I tried to use javascript to set the css manually with no luck. It is a bug of combobox. Urgent help needed. I spent a week to solve this, and our team put a lot trust on the toolkit. Please help me on this, all javascript gurus, thanks. Below is the code to reproduce the bug. When you run it, you can't see the dropdown: <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %> <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"> </asp:ToolkitScriptManager> <div id="d" style="display:none"> <asp:ComboBox ID="ComboBox1" runat="server"> <asp:ListItem>a</asp:ListItem> <asp:ListItem>d</asp:ListItem> <asp:ListItem>f</asp:ListItem> </asp:ComboBox> <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> </div> <div ID="Button1" runat="server" onclick="show();">click me</div> <script type="text/javascript"> function show() { var d = $get('d'); d.style.display = 'block'; } </script>

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  • DB access denied with ASP.Net MVC application after switching to windows authentication mode

    - by myotherme
    I have a MVC application that I am now trying to add authentication and authorization to. I want to allow users to get to the site and be automatically authenticated. So I set authentication mode="Windows" in the web.config, and enabled NTLM in the project options. The site now shows my domain name in the top right when I run it, but when I hit a action than needs DB access, it tells me access is denied for my user-name? What step am I missing?

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  • how to implement videochat in asp.net

    - by Tarun Batta
    I am using silverlight from which I can get the output of my webcam, but I am not sure how to send my webcam output to the person with whom i am chatting. The behaviour required is that i can view the webcam view of mine as well as the person with whom i am chatting....

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  • asp.net repeater returns weird html

    - by emre
    I have a repeater that is supposed to create div tags with their onclick functions from databind. Which is like onclick='<%# "functionname('" + Eval("somestring") +"');" %>' but the single quotes ' after the js func ( and before ) , they become something like ?,= .. I don't understand what's happening. .. the full code is below <div id="dvPager"> <asp:Repeater ID="pagerSorular" runat="server"> <ItemTemplate> <div class='<%# "pageritem pagertext" + ((this.PageNumber == int.Parse(Container.DataItem.ToString())) ? " pagerselected" : "") %>' onclick='<%# "gotopage('" + this.PageName + "', " + Container.DataItem + ");" %>'> <%# Container.DataItem %> </div> </ItemTemplate> </asp:Repeater> </div> and codebehind is: public int PageNumber { get { string strPgNum = Request.QueryString["pg"] as String; if (!String.IsNullOrEmpty(strPgNum)) { int pgnum; if (int.TryParse(strPgNum, out pgnum)) { if (pgnum <= 0) { return pgnum; } else { return 1; } } else { return 1; } } else { return 1; } } } public string PageName { get { string url = Request.Url.ToString(); string[] parts = url.Split(new char[]{'/'}); return parts[parts.Length - 1]; } } public void Doldur(List<SoruGridView> sorulistesi) { gridSorular.DataSource = sorulistesi; gridSorular.DataBind(); /// PagerYap(sorulistesi); } protected void PagerYap(List<SoruGridView> sorulistesi) { List<int> numpgs = new List<int>(); int count = 1; foreach (SoruGridView sgv in sorulistesi) { numpgs.Add(count); count++; } pagerSorular.DataSource = numpgs.ToArray(); pagerSorular.DataBind(); }

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  • use .net webbrowser control by multithread, throw "EXCEPTION code=ACCESS_VIOLATION"

    - by user1507827
    i want to make a console program to monitor a webpage's htmlsourcecode, because some of the page content are created by some javescript, so i have to use webbrowser control. like : View Generated Source (After AJAX/JavaScript) in C# my code is below: public class WebProcessor { public string GeneratedSource; public string URL ; public DateTime beginTime; public DateTime endTime; public object GetGeneratedHTML(object url) { URL = url.ToString(); try { Thread[] t = new Thread[10]; for (int i = 0; i < 10; i++) { t[i] = new Thread(new ThreadStart(WebBrowserThread)); t[i].SetApartmentState(ApartmentState.STA); t[i].Name = "Thread" + i.ToString(); t[i].Start(); //t[i].Join(); } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } return GeneratedSource; } private void WebBrowserThread() { WebBrowser wb = new WebBrowser(); wb.ScriptErrorsSuppressed = true; wb.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler( wb_DocumentCompleted); while(true ) { beginTime = DateTime.Now; wb.Navigate(URL); while (wb.ReadyState != WebBrowserReadyState.Complete) { Thread.Sleep(new Random().Next(10,100)); Application.DoEvents(); } } //wb.Dispose(); } private void wb_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { WebBrowser wb = (WebBrowser)sender; if (wb.ReadyState == WebBrowserReadyState.Complete) { GeneratedSource= wb.Document.Body.InnerHtml; endTime = DateTime.Now; Console.WriteLine("WebBrowser " + (endTime-beginTime).Milliseconds + Thread.CurrentThread.Name + wb.Document.Title); } } } when it run, after a while (20-50 times), it throw the exception like this EXCEPTION code=ACCESS_VIOLATION (null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(nul l)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(n ull)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null) (null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(null)(nul l)(null)BACKTRACE: 33 stack frames: #0 0x083dba8db0 at MatchExactGetIDsOfNames in mshtml.dll #1 0x0879f9b837 at StrongNameErrorInfo in mscorwks.dll #2 0x0879f9b8e3 at StrongNameErrorInfo in mscorwks.dll #3 0x0879f9b93a at StrongNameErrorInfo in mscorwks.dll #4 0x0879f9b9e0 at StrongNameErrorInfo in mscorwks.dll #5 0x0879f9b677 at StrongNameErrorInfo in mscorwks.dll #6 0x0879f9b785 at StrongNameErrorInfo in mscorwks.dll #7 0x0879f192a8 at InstallCustomModule in mscorwks.dll #8 0x0879f19444 at InstallCustomModule in mscorwks.dll #9 0x0879f194ab at InstallCustomModule in mscorwks.dll #10 0x0879fa6491 at StrongNameErrorInfo in mscorwks.dll #11 0x0879f44bcf at DllGetClassObjectInternal in mscorwks.dll #12 0x089bbafa at in #13 0x087b18cc10 at in System.Windows.Forms.ni.dll #14 0x087b91f4c1 at in System.Windows.Forms.ni.dll #15 0x08d00669 at in #16 0x08792d6e46 at in mscorlib.ni.dll #17 0x08792e02cf at in mscorlib.ni.dll #18 0x08792d6dc4 at in mscorlib.ni.dll #19 0x0879e71b4c at in mscorwks.dll #20 0x0879e896ce at in mscorwks.dll #21 0x0879e96ea9 at CoUninitializeEE in mscorwks.dll #22 0x0879e96edc at CoUninitializeEE in mscorwks.dll #23 0x0879e96efa at CoUninitializeEE in mscorwks.dll #24 0x0879f88357 at GetPrivateContextsPerfCounters in mscorwks.dll #25 0x0879e9cc8f at CoUninitializeEE in mscorwks.dll #26 0x0879e9cc2b at CoUninitializeEE in mscorwks.dll #27 0x0879e9cb51 at CoUninitializeEE in mscorwks.dll #28 0x0879e9ccdd at CoUninitializeEE in mscorwks.dll #29 0x0879f88128 at GetPrivateContextsPerfCounters in mscorwks.dll #30 0x0879f88202 at GetPrivateContextsPerfCounters in mscorwks.dll #31 0x0879f0e255 at InstallCustomModule in mscorwks.dll #32 0x087c80b729 at GetModuleFileNameA in KERNEL32.dll i have try lots of methods to solve the problem, finally, i found that if i thread sleep more millseconds, it will run for a longer time, but the exception is still throw. hope somebody give me the answer of how to slove ... thanks very much !!!

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