Install Ajax Control Toolkit Vs 2008 ((BETTER))
So, even if you have no intention of ever writing any controls of your own,the toolkit is worth downloading just to get access to the over thirty controlsthat you can start using immediately.
Install Ajax Control Toolkit Vs 2008
Before we get started, you will most likely want to play around with the sample website that is included with the toolkit. It offers a perfect way to get an idea of what the different controls included in the toolkit do and how they work. If you want to see the code behind the samples, you will want to set up a local copy. To do this, simply follow these simple steps.
First make sure that the ajax control toolkit is strongly named. This is mandatory if you want to install it in GAC. Then use gacutil to install it in GAC. You can create a postbuild event if you want to run it from Visual Studio.
Installing the Ajax Control Toolkit NuGet package also updates your Web.config file. The tag prefix ajaxToolkit is registered so that you can easily use Ajax Control Toolkit controls within any page without adding a @Register directive to the page.
Previously, Telerik.Web.Design.dll was installed in the GAC by the automated installer of the Telerik UI for ASP.NET AJAX suite. Adding it to the GAC was necessary because of Visual Studio 2008 that could not otherwise read design-time code and has caused various issues with later versions because it prevented proper upgrades and broke references.
When installing SQL Server 2008 R2 on a Windows XP (or, according to the comments, Windows 7) development machine that has been around for quite some time, I got an error stating an unhandled exception occured in the application (see image). The error showed up directly upon startup and read: