Answers to Frequently Asked Questions

1. What is the difference between the ScriptManager control and the ToolkitScriptManager control?

We recommend that you use the ToolkitScriptManager control when using the Ajax Control Toolkit. The ToolkitScriptManager uses a later version of ASP.NET Ajax than the ScriptManager control. Also, the ToolkitScriptManager performs automatic script combining on the server.

You are required to use the ToolkitScriptManager when using the Ajax Control Toolkit with ASP.NET 3.5

2. Why can't I drag the Calendar control from the Visual Studio Toolbox onto a Web Forms page?

You cannot drag extender controls, such as the Calendar extender or the TextBoxWatermark extender, onto the Visual Studio designer. You can only drag Ajax Control Toolkit controls, such as the Accordion or Editor control, onto the designer surface.

If you want to use a control extender then you should right-click a control such as a TextBox control and select the menu option Add Extender.