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  • Anything new for WinForms in .NET 4.0

    - by Robert
    I could not find any information about new WinForm features, exept for this blog post: http://blog.codinglight.com/2009/05/future-of-winforms-whats-changed-in.html which states: 213 types were changed, and 9 types were added. 596 methods were changed, 50 were added, and 8 were removed. So whats in these changes, for joe developer?

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  • need thoughts on my interview question - .net, c#

    - by uno
    One of the questions I was asked was that I have a database table with following columns pid - unique identifier orderid - varchar(20) documentid - int documentpath - varchar(250) currentLocation - varchar(250) newlocation - varchar(250) status - varchar(15) I have to write a c# app to move the files from currentlocation to newlocation and update status column as either 'SUCCESS' or 'FAILURE'. This was my answer Create a List of all the records using linq Create a command object which would be perform moving files using foreach, invoke a delegate to move the files - use endinvoke to capture any exception and update the db accordingly I was told that command pattern and delegate did not fit the bill here - i was aksed to think and implement a more favorable GoF pattern. Not sure what they were looking for - In this day and age, do candidates keep a lot of info on head as one always has google to find any answer and come up with solution.

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  • Handling button click in ASP.NET MVC 2 RTM

    - by Leniel Macaferi
    I have a View in which the user is able to upload a file to the server. In this view I also have 2 buttons: one to Upload a file and other to Download the last file imported. In my Controller I created 2 action methods: Import and Export. How could I manage to redirect each button click to the proper action method in my Controller? I have tried Html.ActionLink: <%= Html.ActionLink("Upload", "Import", "OracleFile")%> <%= Html.ActionLink("Download", "Export", "OracleFile")%> Html.ActionLink didn't do the trick. The action links were taking me to the right Action methods but they were generating a GET request. This way Request.Files.Count = 0. I need a POST request.

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  • Session Objects not Updating ASP.NET

    - by davemackey
    I set a session object at one juncture in my code: Session("my_name") = "Dave" Later in my code I give the user a chance to update this object: Session("my_name") = TextBox1.Text I reload my page and display a little hello statement like this: Label1.Text = "Hello" & CStr(Session("my_name")) The result is: "Hello Dave" no matter what I change Session("my_name") too.

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  • .NET/C# - Disposing an object with the 'using' statement

    - by AJ Ravindiran
    Hello, Suppose I have a method like so: public byte[] GetThoseBytes() { using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) { ms.WriteByte(1); ms.WriteByte(2); return ms.ToArray(); } } Would this still dispose the 'ms' object? I'm having doubts, maybe because something is returned before the statement block is finished. Thanks, AJ.

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  • vb.net .aspxauth

    - by Morgan
    I am working with a large site trying to implement web parts for particular users in a particular subdirectory but I can't get the .ASPXAUTH cookie to be recognized. I've read dozens of tutorials and MS class library pages that tell me how it should work to no avail. I am brand new to Web parts, so I'm sorry if I'm unclear. The idea is that logged in users can travel the site, but then when they go to their dashboard, they are programmatically authenticated using Membership and FormsAuthentication to pull up their Personalization. When I step through the code, I can see the cookie being set, and that it exists on the following page, but Membership.GetUser() and User.Identity are both empty. I know the user exists because I created it programmatically using Membership.CreateUser() and I can see it when I do Membership.GetAllUsers() and it's online when i use Membership.GetUser(username) but the Personalization doesn't work. Right now, I'm just trying to get the proof of concept going. I've tried creating the ticket and cookie myself, and also using SetAuthCookie() (code follows). I really just need a clue as to what to look for. Here's the "login" page... If Membership.ValidateUser(testusername, testpassword) Then -- Works FormsAuthentication.SetAuthCookie(testusername, true) Response.Redirect("webpartsdemo1.aspx", False) End If And the next page (webpartsdemo1.aspx) Dim cookey As String = ".ASPXAUTH" lblContent.Text &= "<br><br>" & Request.Cookies(cookey).Name & " Details" lblContent.Text &= "<br>path = " & Request.Cookies(cookey).Path lblContent.Text &= "<br>domain = " & Request.Cookies(cookey).Domain lblContent.Text &= "<br>expires = " & Request.Cookies(cookey).Expires lblContent.Text &= "<br>Secure only? " & Request.Cookies(cookey).Secure lblContent.Text &= "<br>HTTP only? = " & Request.Cookies(cookey).HttpOnly lblContent.Text &= "<br>Has subkeys? " & Request.Cookies(cookey).HasKeys lblContent.Text &= "<br/><br/>request authenticated? " & Request.IsAuthenticated.ToString lblContent.Text &= " Getting user<br/>Current User: " Dim muGidget As MembershipUser If Request.IsAuthenticated Then muGidget = Membership.GetUser lblContent.Text &= Membership.GetUser().UserName Else lblContent.Text &= "none found" End If Output: .ASPXAUTH Details path = / domain = expires = 12:00:00 AM Secure only? False HTTP only? = False Has subkeys? False request authenticated? False Getting user Current User: none found Sorry to go on so long. Thanks for any help you can provide.

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  • Adding custom valiadtion to ASP.NET controls

    - by Brian
    We're trying to build a simple asp control for some clients where they can just drop in a single block - i.e. <captcha:CaptchaControl ID="CaptchaControl1" runat="server" Server="http://localhost:51947/" /> and have it render the control. The catch is that I can't get this to include custom validation. Right now I'm using the RenderContents function to display the layout of the control itself as well as hook it up the to Javascript. The problem is that I don't know how to get custom validation to fire when used as part of a control. protected override void RenderContents(HtmlTextWriter output) { output.Write(@" <script type=""text/javascript"" src=""http://ajax.googleapis.com/ajax/libs/jquery/1.3/jquery.min.js""></script> <link rel=""stylesheet"" type=""text/css"" href=""/Layout/CaptchaLayout.css"" /> //etc <asp:Textbox id=""text1"" runat=""server"" text=""""></asp:Textbox> <asp:CustomValidator id=""CustomValidator2"" runat=""server"" ControlToValidate = ""text1"" ErrorMessage = ""You must enter at least 8 characters!"" ClientValidationFunction=""validateLength"" > </asp:CustomValidator>" ); } Any suggestions for a better way to do this?

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  • Autocomplet extender control in ajax (asp.net)?

    - by Surya sasidhar
    hi, i am using autocomplete extender in my application but it is not working. this is my code.. <form id="form1" runat="server"> <asp:scriptmanager ID="Scriptmanager1" runat="server"></asp:scriptmanager> <br /> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <div> <cc1:AutoCompleteExtender TargetControlID="TextBox1" MinimumPrefixLength="1" ServiceMethod="GetVideoTitles" CompletionSetCount="10" ServicePath="Myservices.asmx" ID="AutoCompleteExtender1" runat="server"> </cc1:AutoCompleteExtender> </div> </form> this is webservice method public string[] GetVideoTitles(string prefixText) { SqlConnection con = new SqlConnection(@"Data Source=SERVER5\SQLserver2005;Initial Catalog=tpvnew;User ID=xx;Password=525"); con.Open(); SqlCommand cmd = new SqlCommand("video_videotitles", con); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.Add("@prefixText", SqlDbType.VarChar, 50); cmd.Parameters["@prefixText"].Value = prefixText; SqlDataAdapter da = new SqlDataAdapter(cmd); DataTable dt = new DataTable(); da.Fill(dt); string[] items = new string[dt.Rows.Count]; int i = 0; foreach (DataRow dr in dt.Rows) { items.SetValue(dr["videotitle"].ToString(), i); i++; } return items; }

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  • VB.Net Validate an xml against a schema (strange problem)

    - by Apeksha
    I have written a small XML validator, that takes in an XML file and an XML schema and validates the XML files against that schema. It works well, except for an XML file, with this content: <?xml version="1.0" encoding="utf-8"?> <xc:program xmlns:xc="http:\\www.something.com\Schema\XC10" xc:version="4.0.22.0" > <xc:namespaceDecls> <xc:namespaceDecl xc:namespaceDeclURI="urn:swift:xsd:abc"> <xc:namespaceDeclPrefix>n</xc:namespaceDeclPrefix> </xc:namespaceDecl> </xc:namespaceDecls> </xc:program> I tried to validate this XML file against a bunch of different schemas. No matter which schema I select, this XML file comes out as valid. What is it that I am missing? Here is the relevant piece of code: 'Create a schema cache and add the given schema to it. Dim schemaCache As New Schema.XmlSchemaSet schemaCache.Add(targetNamespace, schemaFilename) 'Create an XML DOMDocument object. Dim xmlDom As New XmlDocument 'Assign the schema cache to the DOM document. 'schemas collection. xmlDom.Schemas = schemaCache 'Load selected file as the DOM document. xmlDom.Load(xmlFilename) xmlDom.Validate(AddressOf ValidationCallBack)

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  • Building URL or link in REST ASP.NET MVC

    - by AWC
    I want to build a URL at runtime when a resource is render to either XML or JSON. I can do this easily when the view is HTML and is rendering only parts of the resource, but when I render a resource that contains a links to another resource I want to dynamically generate the correct URL according the host (site) and resource specific URI part. <components> <component id = "1234" name = "component A" version = "1.0"> <link rel = "/component" uri="http://localhost:8080/component/1234" /> </component> <components> How do I make sure the 'uri' value is correct?

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  • I'm a professional Java developer, should I learn .NET?

    - by Alex Spurling
    Java and .NET seem to have a great number of parallels especially in the web application area. Both languages have many of the same technologies especially in terms of open source libraries (JUnit and NUnit, Hibernate and NHibernate) but there are also plenty of differences and different approaches to solving certain software development problems. As a Java developer I get the feeling I'm missing out on learning about web application development from the .NET point of view and I could learn a lot about the general principles by learning two languages rather than getting stuck in the details of Java and not seeing the bigger picture. So the first question is, do you agree? Does learning two separate but similar languages such as Java and .NET make you a better programmer? Secondly, I'm worried that if I choose to take, for example, a MCPD ASP.NET 3.5 certification it won't actually help me get work doing .NET development because it goes against all my existing experience. Is trying to broaden your skills a good career choice or is it a better decision to choose one technology and stick with that?

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  • Asp.Net : Web service throws "Thread was being aborted"

    - by Master Morality
    I have a web service that I call via ajax that requires the user to be logged in. in each method I want to check if the user is logged in and send a 403 code if they are not, however when I call a Response.End() I get the error "Thread was being aborted". What should I call instead? [WebMethod(true)] public string MyMethod() { if(!userIsLoggedIn) { HttpContext.Current.Response.StatusCode = 403; HttpContext.Current.Response.End(); } /* Do stuff that should not execute unless the user is logged in... */ ... }

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  • Search Route in ASP.NET MVC

    - by olst
    Hi. I have a simple search form in my master page and a serach controller and view. I'm trying to get the following route for the string search term "myterm" (for example): root/search/myterm The form in the master page : <% using (Html.BeginForm("SearchResults", "Search", FormMethod.Post, new { id = "search_form" })) { %> <input name="searchTerm" type="text" class="textfield" /> <input name="search" type="submit" value="search" class="button" /> <%} %> The Controller Action: public ActionResult SearchResults(string searchTerm){...} The Route I'm Using : routes.MapRoute( "Search", "search/{term}", new { controller = "Search", action = "SearchResults", term = (string)null } ); routes.MapRoute( "Default", "{controller}/{action}", new { controller = "Home", action = "Index" } ); I'm always getting the url "root/search" without the search term, no matter what search term I enter. Thanks.

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  • Ajax call with jQuery in ASP.NET MVC does not pass parameters

    - by desmati
    The Route is: routes.MapRoute( "Ajax", // Route name "BizTalk/Services/{action}", // URL with parameters new { // Parameter defaults controller = "BizTalk" } ); My Controller is: public JsonResult AjaxTest(string s, int i, bool b) { return Json("S: " + s + "," + "I: " + i + "," + "B: " + b); } My jQuery Code: $(document).ready(function() { $("#btn_test").click(function() { var s = "test"; var i = 8; var b = true; $.ajax({ type: "POST", cache: false, url: "/BizTalk/Services/AjaxTest", data: { i: i, s: s, b: b }, contentType: "application/json; charset=utf-8", dataType: "json", success: function(msg) { } }); }); });

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  • Automatically Sizing an ASP.NET Treeview Control

    - by Robert Harvey
    Is there a way to automatically resize a TreeView control so that when it is rendered (or re-rendered, if a node is expanded), the TreeView automatically resizes itself to match the overall height of the tree? The purpose of this is to eliminate the scroll bar that accompanies the TreeView, so that the treeview blends seamlessly into the background.

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  • VB.net Saving an MetaFile / EMF as a bitmap ( .tiff)

    - by pehaada
    Currently I have a third party control that generates a Metafile. I can save the .wmf file to disk with out issue. The problem is how do I render the Metafile as a Tiff file. Currently I have the following code to get my metafile and save it. Dim mf As Metafile = page.GetImage(TXTextControl.Page.PageContent.All) Dim enhMetafileHandle As IntPtr = mf.GetHenhmetafile() Dim h As IntPtr Dim bufferSize As UInteger = GetEnhMetaFileBits(enhMetafileHandle, 0, h) Dim buffer(CInt(bufferSize)) As Byte GetEnhMetaFileBits(enhMetafileHandle, bufferSize, buffer) Dim msMetafileStream As New MemoryStream msMetafileStream.Write(buffer, 0, CInt(bufferSize)) Dim baMetafileData() As Byte baMetafileData = msMetafileStream.ToArray Dim g As Graphics = Graphics.FromImage(mf) mf.Dispose() File.WriteAllBytes("c:\a.wmf", baMetafileData) end sub _ Public Shared Function GetEnhMetaFileBits( ByVal hEMF As System.IntPtr, ByVal nSize As UInteger, ByVal lpData As IntPtr) As UInteger End Function <System.Runtime.InteropServices.DllImportAttribute("gdi32.dll", EntryPoint:="GetEnhMetaFileBits")> _ Public Shared Function GetEnhMetaFileBits(<System.Runtime.InteropServices.InAttribute()> ByVal hEMF As System.IntPtr, ByVal nSize As UInteger, ByVal lpData() As Byte) As UInteger End Function I've tried all sort of IMAGE and Graphic calls and just can't save the meta file as a .tiff. Any suggestions would be great. I even tried to create a new bitmap and draw the metafile onto it. I always end up with a GDI exception being thrown.

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  • Common DataAnnotations in ASP.Net MVC2

    - by Scott Mayfield
    Howdy, I have what should be a simple question. I have a set of validations that use System.CompontentModel.DataAnnotations . I have some validations that are specific to certain view models, so I'm comfortable with having the validation code in the same file as my models (as in the default AccountModels.cs file that ships with MVC2). But I have some common validations that apply to several models as well (valid email address format for example). When I cut/paste that validation to the second model that needs it, of course I get a duplicate definition error because they're in the same namespace (projectName.Models). So I thought of removing the common validations to a separate class within the namespace, expecting that all of my view models would be able to access the validations from there. Unexpectedly, the validations are no longer accessible. I've verified that they are still in the same namespace, and they are all public. I wouldn't expect that I would have to have any specific reference to them (tried adding using statement for the same namespace, but that didn't resolve it, and via the add references dialog, a project can't reference itself (makes sense). So any idea why public validations that have simply been moved to another file in the same namespace aren't visible to my models? CommonValidations.cs using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.ComponentModel; using System.ComponentModel.DataAnnotations; using System.Text.RegularExpressions; namespace ProjectName.Models { public class CommonValidations { [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, AllowMultiple = true, Inherited = true)] public sealed class EmailFormatValidAttribute : ValidationAttribute { public override bool IsValid(object value) { if (value != null) { var expression = @"^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$"; return Regex.IsMatch(value.ToString(), expression); } else { return false; } } } } } And here's the code that I want to use the validation from: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.ComponentModel; using System.ComponentModel.DataAnnotations; using Growums.Models; namespace ProjectName.Models { public class PrivacyModel { [Required(ErrorMessage="Required")] [EmailFormatValid(ErrorMessage="Invalid Email")] public string Email { get; set; } } }

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