Use UpdatePanel in SharePoint 2010

In msdn i 开发者_高级运维found this - http://msdn.microsoft.com/en-us/library/ff650218.aspx but I don't know where to find reference to Microsoft.Practices.SPG.AJAXSupport.dll Help please!

have u downloaded the ajax tools?? if yes thn just add tht tools in web.cnfig in safe control assemblies. and start using it in your page