Today’s stupid mistake comes to you via the web.config file in an ASP.NET 4 Web application project. At runtime, when navigating to default.aspx, ASP.NET choked with this error message: Parser Error Message: Sections must only appear once per config file.  See the help topic for exceptions. Source Error: Line 14:     .. more »

httpRuntime element (about half way down the file). To increase the timeout, add the executionTimeout attribute to the httpRuntime element with a value of the number of seconds for the timeout. For example, to increase the timeout to 5 minutes, add an executionTimeout of 300 like this: In the default SharePoint Foundation 2010 web.config file it .. more »

, it became easier to add support for Dallas to Creating a connection to a Dallas dataset in Sesame is easy. You just need a dataset URL and an account key. In order to get an account key and URLs, you need to visit and sign in with a Windows Live ID. You'll then be able to subscribe to datasets, such as AP Online (Associated Press) or business .. more »

You may wonder that why I have chosen topic on GridView control, when there are lot of material available on internet for GridView. But this article focus on closer look on GridView control, my target audience will be novice to GridView control. Also I will try my best to explain different aspects of GridView. GridView is one of the robust Data .. more »

Don't you hate it when things go wrong? Most of the time on endpoint.tv, I show you when everything is working properly. On this episode, however, I'm going to show you some tools and techniques for troubleshooting what happens when you invoke a proxy with the wrong service address.Ron Jacobsblog        http://blogs.msdn.com/rjacobstwitter&nbs.. more »

The CPU meter shows the problem. One core is running at 100 percent, but all the other cores are idle. Your application is CPU-bound, but you are using only a fraction of the computing power of your multicore system. What next? The answer, in a nutshell, is parallel programming. Where you once would have written the kind of sequential code that is .. more »

announced the release of Feature CTP4 for the ADO.Net Entity Framework (EF). CTP4 contains a preview of new features that we are considering adding to the core framework and would like community feedback on. CTP4 builds on top of the existing Entity Framework 4 (EF4) which shipped as part of .NET Framework 4.0 and Visual Studio 2010. CTP4 contains .. more »

Ugh. Much to our chagrin, we discovered that the commenting functionality on this blog wasn't working. We just made some tweaks and commenting on this blog is working once again! .. more »

I am auditing one big legacy application. I use Visual Studio 2010 modeling projects to visualize the design of this legacy application. When I wanted to get my UML diagrams to image files so I can insert them to documents I found no option for it. As it turned out we have to write extension for modeling projects and deploy it as Visual Studio 2010 .. more »

La Communaut .NET vous propose une journe de formation complte sur le B.I. Le but de la journe est de de faire un tour d'horizon des bases et des techonogies de B.I. Le public cible est un dveloppeur .NET ou un DBA n'ayant jamais fait de B.I. Le format de la journe est "hands-on" avec une srie de dmos ayant une suite logique. La salle tant en forme .. more »

You always have problem to debug when you do latest from source control.You might end up deleting bin/obj folder sometime.Here is nice bat file which delete bin/obj folder(s). 1. copy this on notepad and save it as clean.bat file 2. Keep this file on root directory 3. Double check the directory on "DIR /B /AD /S obj" and "DIR /B /AD /S bin" .. more »

There's been a lot of discussion lately around web standards and HTML 5 in particular. People have been asking us how Silverlight fits into a future world where the tag is available to developers. It's a fair question—and I'll provide a detailed answer—but I think it's predicated upon an oversimplification of the role of standards that I'd like.. more »

As Jesus mentioned in this , SO-Aware provides three interfaces for managing the service repository. An OData API in case you want to integrate third applications with the repository. OData is a pure http API that can be easily consumed in any platform using a simple http client library. The management portal, which is an ASP.NET MVC user interface .. more »

I can't say that I've ever known any kind of Web-based service to suck as much as Twitter, yet be as simple and popular. It really boggles the mind. As just a regular user, it can be annoying enough with the constant outages and failures. As a developer, it's even worse. In my case, I put a simple hook in to publish links from our news page using .. more »

Twitter authentication buttonIn my last posting I introduced my idea about common membership provider that is able to support multiple authentication providers. Before writing membership provider we need support for some authentication providers to get an better idea how to use them together. In this posting I will introduce you how to use OAuth .. more »

Welcome to the first of many weekly round-ups for the “Create Games for Windows Phone 7” educational series, presented by the XNA Creators Club Online. If you haven’t heard about it, there are free samples, articles – even a whole 2D game lab – all waiting for you at the new on the XNA Creators Club Online site. Also, you can look ahead on the roa.. more »

Sometimes you have work that you want to schedule for off-peak times or have happen on a recurring schedule, such as every 3 hours. While there are many ways to do this, Workflow Services are an interesting option. In this episode, I'll show you how you can create a service that accepts start, stop, and query messages, and supports .. more »

While developing front end web pages, Quality insurance team always capture design implementation issues. They test for the following issues most of the time, i am working as a team member at leading organization,  there i observed most of developer make common mistake while during development, which then so time consuming to test and report the is.. more »

Good news from Amazon this morning as they have announced what I’ve been asking for – an API for content invalidation. Previously, they allowed content to have a max-age of 1 hour, but it didn’t allow for the control that a manual invalidation would have. According to the press release, the API call will allow for the removal of files from all ed.. more »

Since about a month ago,I started to get validation warnings at design time on asp.net server controls (any control actually) within the html design view for VS 2010,intellisense on all controls would not work at all,the messages look like this: Validation(): Element 'Label' is not supported. Validation(): Element 'GridView' is not supported .. more »