The new version of RadGridView is coming in May (as beta) and I am eager to show you some of the new features. There are many methods to indicate errors in RadGridView. However, until now it didn’t support the most natural and easy way for this - the IDataErrorInfo interface. Things have changed, so let me show you how to use this interface.   As MSDN says,“IDataErrorInfo provides the functionality to offer custom error information that a user interface can bind to.” Actually, you don't need to know anything about this interface. You can just set the ErrorText property of the desired row or cell: this.radGridView1.Rows[5].ErrorText = "There...

Download Source Code  Task-It Series This post is part of a series of blog posts and videos about the Task-It (task management) application that I have been building with Silverlight 4 and Telerik's RadControls for Silverlight 4. For a full index of these resources, please go here. Finally...the code I've received many questions about when the source code for the Task-It application will be released. Well, the time has finally come. I haven't been able to release this sooner due to the flurry of releases that have been coming out lately. Silverlight 4, WCF RIA Services, and even our Q1 Rad Controls. Each time I got the latest bits I ran...

The new standalone WebUI Test Studio 2010 (its official launch was announced in my previous post) includes a couple of built from scratch modules which we’ll describe in this blog. I’ll start with the important features of the Test Lists in the QA Edition. Record and execute a single test Recording and execution of a single test case is pretty straight forward thanks to a cool hint on the startup screen:   With the QA edition you can quickly create a new project, add a test in the project and launch the recorder for your first test. You can ...

Color identifiers make it easier for developers to quickly read and understand the code on screen.  One of the many features provided by JustCode is the ability to colorize additional items that Visual Studio does not allow you to colorize by default.  The colorization of items such as methods, properties, events, variables, and method parameters can easily be tweaked to your specific needs. Enable / Disable Color Identifiers In the recent release, we turned this option on by default.  You can enable/disable code colorization by going to the JustCode menu in Visual Studio, selecting options, then selecting the general section in...

Today , I will cover a very simple topic, which can be useful in cases we want to mock different interfaces on our expected mock object.  Our target interface is simple and it looks like:   public interface IFoo : IDisposable {     void Do(); } Our target interface has an IDisposable implemented. Now, generally if we implement it in a class , we have to implement the whole of it [which is quite logical] and that should not wait for any extra calls or constructs. Considering that, when we are creating our target mock it should also implement all the dependent interfaces for us as well.   Therefore,  as we are creating...