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• What are the advantages of version control systems that version each file separately?

  - by Mike Daniels

  Over the past few years I have worked with several different version control systems. For me, one of the fundamental differences between them has been whether they version files individually (each file has its own separate version numbering and history) or the repository as a whole (a "commit" or version represents a snapshot of the whole repository). Some "per-file" version control systems: CVS ClearCase Visual SourceSafe Some "whole-repository" version control systems: SVN Git Mercurial In my experience, the per-file version control systems have only led to problems, and require much more configuration and maintenance to use correctly (for example, "config specs" in ClearCase). I've had many instances of a co-worker changing an unrelated file and breaking what would ideally be an isolated line of development. What are the advantages of these per-file version control systems? What problems do "whole-repository" version control systems have that per-file version control systems do not?

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• JavaScript JSON Error While Tabbing in ASP.NET MVC

  - by MightyZot

  Originally posted on: http://geekswithblogs.net/MightyZot/archive/2013/11/11/javascript-json-error-while-tabbing-in-asp.net-mvc.aspxI sometimes don’t care about validation for a specific control. The RememberMe control in the login form, for example, really doesn’t need validation, so I forget to include the Html.ValidationMessageFor helper line for that control in particular. As a result, when I’m debugging using IE, I get a silly JSON parsing exception when changing focus from one field to another. The exception doesn’t hurt anything, as far as I know, but it’s just plain annoying. If you’re getting this error, and you don’t want validation messages showing up for controls on a form, you can put them in div tags and set the display style on the divs to none. When I have a handful of controls that I don’t want the validation messages for, I just throw them all in the same div and hide it.

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• Concerns on first ASP.NET cloud application

  - by RPK

  I am writing a small ASP.NET Web Application. My worries are that I want to keep the architecture same giving me the option to install it on an Intranet or on a Cloud Platform. I am not using MVC but lately learned that Azure only supports ASP.NET MVC applications. I want to know whether ASP.NET Web Forms application work on Azure/AppHarbor or not. Do I need to convert this application to MVC if Web Forms is not supported? Will the same application run on Intranet as well?

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• asp.net website development component / APIs

  - by Haseeb Asif

  I have been assigned a new website project to work on in my organization where my role demand to finalize all the tools/technologies/controls/api etc. That website will something like online store, where every user has his online store as subdomain e.g. user1.myprojectdomain.com I have been researching a number of things to use and need your suggestions in following levels ASP.NET web forms vs Asp.net MVC: Prefering asp.net webforms due to following reason with N Tier Architecture Rapid application Development large set of Toolbox/controls And mainly due to our team skill set Errorlogging Elmah seems to be a nice library Forums Forums Yetanotherforums On line Live Chat still looking for something (Working on SignalR) Signups with Social Media Engage by Janrain And I need help that how can Manage sub domains. Do we create a Virtual Directory/application for every user in the IIS on runtime or we can do some thing else

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• Which one scales better asp or php?

  - by Marin

  Let's say the website is doing fine(forums,pictures,ajax). And it needs scaling up/scaling out. I feel more comfortable with php but I have worked with asp.net as well. Would you say asp.net is much more powerful, more robust and thus easier to scale out? What would be the pros and cons of converting the website to asp.net in regards to scalability and performance versus keeping the website written in PHP? Examples of personal experience in making such a conversion would be a plus. Thank you.

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• ViewContext.RouteData.Values["action"] is null on server... works fine on local machine

  - by rksprst

  I'm having a weird issue where ViewContext.RouteData.Values["action"] is null on my staging server, but works fine on my dev machine (asp.net development server). The code is simple: public string CheckActiveClass(string actionName) { string text = ""; if (ViewContext.RouteData.Values["action"].ToString() == actionName) { text = "selected"; } return text; } I get the error on the ViewContext.RouteData.Values["action"] line. The error is: Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Any help is appreciated. Thanks in advance.

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• How to mask tilde (~) character in C# MVC routing table?

  - by AC

  I'm moving my home-baked web site to MVC and got the trouble with url routing. The site already serves several links that contain tilde (~) character in the path; something like http://.../~files/... http://.../~ws/... and I want each of them are handled by separate controller, like filesController, wsController, so my route table looks like routes.MapRoute( "files", "~files/{*prms}", new { controller = "files", action = "index", prms = "" } ); routes.MapRoute( "ws", "~ws/{*prms}", new { controller = "ws", action = "index", prms = "" } ); ... but when I try to get the result I got the error saying "The route URL cannot start with a '/' or '~' character and it cannot contain a '?' character." As I understand those characters have the special meaning in ASP.net but is it possible to mask them somehow, at least tilde? Should I parse and route requests like this myself? What the best practice to handle urls like this? Thanks!

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• Forms Authentication and Login controls

  - by DotnetDude

  I am upgrading a website written using ASP.NET 1.1 and the logic for the login page includes verifying the credentials, calling FormsAuthentication.SetAuthCookie() and populating the Session with the user information. I am updating this page to use Login controls and the Membership API and am trying to wrap my head around the concepts that have been changed. Most of the samples I see do not do anything on the login button event handler, so is the logic of setting the cookie abstracted out into the control? Also, how do I check if a user is logged in or not on other pages. Does it still store user information using the Session? How do I check if a user belongs to a particular role or not (Earlier, I would look in the Session object to do something like this) Is the Session a bad way of storing user info? Thanks

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• MVC2: Best Way to Intercept ViewRequest and Alter ActionResult

  - by Matthew

  I'm building an ASP.NET MVC2 Web Application that requires some sophisticated authentication and business logic that cannot be achieved using the out of the box forms authentication. I'm new to MVC so bear with me... My plan was to mark all restricted View methods with one or more custom attributes (that contain additional data). The controller would then override the OnActionExecuting method to intercept requests, analyze the target view's attributes, and do a variety of different things, including re-routing the user to different places. I have the interception and attribute analysis working, but the redirection is not working as expected. I have tried setting the ActionExecutingContext.Result to null and even have tried spooling up controllers via reflection and invoking their action methods. No dice. I was able to achieve it this way... protected override void OnActionExecuting(ActionExecutingContext filterContext) { filterContext.HttpContext.Response.Redirect("/MyView", false); base.OnActionExecuting(filterContext); } This seems like a hack, and there has to be a better way...

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• Is using jquery to call a WCF Data Service from the UI violating the MVC pattern.

  - by Lee Dale

  I'm fairly new to ASP.Net MVC 2 and understand the MVC pattern in itself. But my question is what's the best way to populate dropdownlists in the UI sticking to the MVC pattern. Should I be going through the controller? Every article I've seen to do this shows how to do it using javascript and jquery. I have a test application that I'm re-writing in MVC2 I have my dropdowns working with jquery basically calling a WCF Data Service that returns JSON which populates the dropdowns. Seems to me though that this is bypassing the controller and going straight to the model therefore strictly violating the MVC pattern. Or am I missing something obvious here. You thoughts or best practices would be greatly welcome here. Thanks

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• ASP.NET - How to add a label to a RadioButtonList ListItem?

  - by EWizard

  I have a RadioButtonList with two ListItems included: <asp:RadioButtonList runat="server" ID="optRollover" OnSelectedIndexChanged="RolloverOptionSelected" AutoPostBack="true"> <asp:ListItem Value="0">100% </asp:ListItem> <asp:ListItem Value="1">Less than 100%</asp:ListItem> </asp:RadioButtonList><br /> On the first ListItem I need to have a label that displays some text from the code behind of the page. Logically it seems to me like I would be able to do something like this: 100% Obviously this does not work because I am getting an error: The 'Text' property of 'asp:ListItem' does not allow child objects. Can anyone think of a way around this constraint?

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• DataList Control in vb.net windows application forms

  - by KoolKabin

  Hi guys, I am upgrading my application from vb6 to vb.net. I used to populate my data in datalist control in vb6 forms. I am not finding it in vb.net windows form application. Which one control is the equivalent to it? How can i list my data in that control? just like: I had a table with data like id, name I want the name should be the displayed column and id the bound column? how can i do that

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• Which Javascript history back implementation is the best?

  - by Malcolm Frexner

  There are implementations for history.back in Micrososft AJAX and jQuery (http://www.asual.com/jquery/address/). I already have jQuery and asp.net ajax included in my project but I am not sure which implementation of history.back is better. Better for me is: Already used by some large projects Wide browser support Easy to implement Little footprint Does anybody know which one is better? EDIT: Another jquery plugin is http://plugins.jquery.com/project/history It is recommmended in the book JQuery Cookbook. This one worked well so far.

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• How to use a control like the one in Visual Studio's Class Details window

  - by Chapso

  There is a control in Visual Studio's Class Details window (accessed via Class Diagram) which combines a ListView with a TreeView. The result looks something like this: TreeViewNode1 Column 1 Column 2 Column 3 Column 1 Column 2 Column 3 TreeViewNode2 Column 1 Column 2 Column 3 Column 1 Column 2 Column 3 All of the TreeView Nodes are collapsable so that you can view only the nodes you want to. I am looking to implement this, but it doesn't seem to be a .net control. Does anyone know of a control which already exists that allows this? It has to be free (as in beer).

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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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• Want to add labels and textboxes on clicking a Href link

  - by user1740184

  I am using code in view of MVC as below <div class="form-inline"> <label class="control-label"><b>Length</b></label> <input type="text" name="Refinishing.Room.Length.Feet" id="Refinishing_Room_Length_Feet" style="width: 80px" class="floor-text" />Ft <input type="text" name="Refinishing.Room.Length.Inch" id="Refinishing_Room_Length_Inch" class="floor-text" />Inch <label><b>Width</b></label> <input type="text" name="Refinishing.Room.Width.Feet" id="Refinishing_Room_Width_Feet" class="floor-text" />Ft <input type="text" name="Refinishing.Room.Width.Inch" id="Refinishing_Room_Width_Inch" class="floor-text" />Inch<br /> <a href="#">Add Room</a> / <a href="#">Remove Room</a> </div> and I want to add the contents of "<div>" on clicking the link "Add Room". How can it be done?

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• How to register a VB.Net User Control with jQuery

  - by BornReady

  Greetings and thank you in advance for the help. I created a user control in VB.NET that uses a jQuery datepicker. I am at an impasse. The code I have works for one datepicker control on the page but because I can only register the client script once, it will not work for multiple instances/datepickers on the same page. What is the best way to go about initiating the jQuery script for this control so I can use it multiple times on one page? Can I append to ClientScript.RegisterStartupScript? Thanks again.

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• VSTO is Free But Aspose is Speed

  - by Ken Cox [MVP]

  I’ve taken over the completion, deployment, and maintenance of an ASP.NET Web site that generates Office documents using VSTO. VSTO’s a decent concept and works fine for small-scale scenarios like a desktop app or small intranet. However, with multiple simultaneous requests via ASP.NET, we found the Web server performance suffered badly. To spread out the server’s workload, I implemented MSMQ task queuing via a WCF Windows service.  That helped a lot. IIS didn’t drag with only one VSTO/Office instance running. But I  still found it taking too long to produce a single report. A nicely formatted VSTO Excel document was taking 45 minutes.  (The client  didn’t know any better and therefore considered 45 minutes tolerable.) On my own time, I pulled out an old copy of Aspose.Total for .NET. Within an hour, I had converted the VSTO Excel C# code to Aspose Cells code. The improvement was astonishing: Instead of the 45-minutes, the report took under a minute! I’ve pasted the client’s exact chat response after he tried the speedy Aspose version: “WWWWWOOOOOOOOWWWWWWWW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!” Microsoft’s VSTO is a free product while the Aspose components cost $$$.  Certainly, it can be a tough call when budgets are tight. If you’re trying to convince the client to shell out for something more suitable for the application, get an eval version of Aspose.Total and offer a direct comparison demo. Ken Full Disclosure: Aspose (like several other component vendors) gives free copies of their suite to MVPs and other .NET influencers.

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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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• SSL pages under ASP.NET MVC

  - by David Laing

  How do I go about using HTTPS for some of the pages in my ASP.NET MVC based site? Steve Sanderson has a pretty good tutorial on how to do this in a DRY way on Preview 4 at: http://blog.codeville.net/2008/08/05/adding-httpsssl-support-to-aspnet-mvc-routing/ Is there a better / updated way with Preview 5?,

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• What does the "=>" mean in asp.net mvc?

  - by quakkels

  Hey SO, I've got a pretty noob question for ya. I keep seeing this syntax: <%= Html.LabelFor(model => model.Email) %> ...and I have no idea what the = means. I thought it was syntax for linq2sql or ado.net entity framework but I'm just using straight ado.net. I don't understand why the VWD used that syntax when generating the Create form. What does = mean?

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• ASP.NET AJAX Modal Popup on Mouse Over

  - by Latest Microsoft Blogs

  Today’s customer question concerns client side predicates for showing a Modal Popup control. I’m happy to be getting these kind of questions because it shows how ASP.NET developers are continuing to evolve their web development perspective and separate Read More......(read more)

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• State management using the Application class in ASP.Net applications

  - by nikolaosk

  I have explained some of the state mechanisms that we have in our disposal for preserving state in ASP.Net applications in various posts in this blog. You can have a look at this post , this post , this post and this one . I have not presented yet an example in using the Application class/object for preserving state within our application. Application state is available globally in an application.The way we access Application State is through the HttpApplication object's Application property. Let...(read more)

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• Asp.net session on browser close

  - by budugu

  Note: Cross posted from Vijay Kodali's Blog. Permalink How to capture logoff time when user closes browser? Or How to end user session when browser closed? These are some of the frequently asked questions in asp.net forums. In this post I'll show you how to do this when you're building an ASP.NET web application. Before we start, one fact: There is no full-proof technique to catch the browser close event for 100% of time. The trouble lies in the stateless nature of HTTP. The Web server is out of the picture as soon as it finishes sending the page content to the client. After that, all you can rely on is a client side script. Unfortunately, there is no reliable client side event for browser close. Solution: The first thing you need to do is create the web service. I've added web service and named it AsynchronousSave.asmx.    Make this web service accessible from Script, by setting class qualified with the ScriptServiceAttribute attribute...  Add a method (SaveLogOffTime) marked with [WebMethod] attribute. This method simply accepts UserId as a string variable and writes that value and logoff time to text file. But you can pass as many variables as required. You can then use this information for many purposes. To end user session, you can just call Session.Abandon() in the above web method. To enable web service to be called from page’s client side code, add script manager to page. Here i am adding to SessionTest.aspx page When the user closes the browser, onbeforeunload event fires on the client side. Our final step is adding a java script function to that event, which makes web service calls. The code is simple but effective My Code HTML:( SessionTest.aspx ) C#:( SessionTest.aspx.cs ) That’s’ it. Run the application and after browser close, open the text file to see the log off time. The above code works well in IE 7/8. If you have any questions, leave a comment.

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• Different types of Session state management options available with ASP.NET

  - by Aamir Hasan

  ASP.NET provides In-Process and Out-of-Process state management.In-Process stores the session in memory on the web server.This requires the a "sticky-server" (or no load-balancing) so that the user is always reconnected to the same web server.Out-of-Process Session state management stores data in an external data source.The external data source may be either a SQL Server or a State Server service.Out-of-Process state management requires that all objects stored in session are serializable.Linkhttp://msdn.microsoft.com/en-us/library/ms178586%28VS.80%29.aspx

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