Web: ASP.NET AJAX

Welcome back to another episode of RadTips, a series of episodes offering tips and tricks for using Telerik's RadControls. If you've missed previous episodes, be sure to check them out. Each is only a few minutes long and covers a specific RadControl feature: 1 - Client-Side Data Binding in the RadGrid 2 - Client-Side Paging in the RadGrid 3 - Client-Side Sorting in the RadGrid 4 - Client-Side Filtering in the RadGrid 5 - Getting Started with the RadScheduler 6 - Using the LinqDataSource in your RadGrid  This Week In this episode I show you how to add resources to your RadScheduler which you can then assign to...

In a previous blog post I mentioned that you should use WebService load on demand in order to squeeze the most performance from RadTreeView. In this post I will show a few other tricks which can be used to improve the loading time even further. All techniques are optional and can be used independently. We start with a simple page containing only a single RadTreeView control with one root node. The testing environment is: Visual Studio 2008 SP1 Intel Core 2 Duo E6550 @ 2.33GHz. IIS7 web site Internet Explorer 7 Latest internal build of Telerik.Web.UI.dll (which will go live with the Q3 2008 release) Here...

In some cases you may end up with the following exception when working with RadControls for ASP.NET Ajax: "Script controls may not be registered after PreRender." The explanation of this error is simple - some UI control implementing the IScriptControl interface (e.g. any control from the RadControls for ASP.NET Ajax suite) is stored in the Session, Application or Cache and then is added in some live controls collection. Here is an...

Welcome back to another episode of RadTips, a series of episodes offering tips and tricks for using Telerik's RadControls. If you've missed previous episodes, be sure to check them out. Each is only a few minutes long and covers a specific RadControl: 1 - Client-Side Data Binding in the RadGrid 2 - Client-Side Paging in the RadGrid 3 - Client-Side Sorting in the RadGrid 4 - Client-Side Filtering in the RadGrid 5 - Getting Started with the RadScheduler This Week In this episode, I'm going to show you how to use the LinqDataSource control to combine the power of .NET 3.5's Language Integrated Query (LINQ) with the...

I promised that I will continue the "tooltips" series by demonstrating a "HOWTO" approach with our RadMultiColumnComboBox component.   So what is the big difference with RadComboBox? What is really different is that RadGridView uses temporary elements to render grid cells, that are recycled every time you change something inside the screen estate of the RadGridView (say like scrolling). This means that setting the TooltipText properties of the cells in design time or through the API won't work. The solution That leaves us with the second approach only: to use the ToolTipTextNeeded event to get the job done.  Here is a small example...