Problem with ClientScript.RegisterClientScriptBlock when using Ajax

There’s a breaking change in the beta. to insert scripts during a partial postback youmust use the registerXXX static methods of the scriptmanager class. 

e.g.
Microsoft.Web.UI.ScriptManager.RegisterClientScriptBlock(DropDownList1, typeof(DropDownList),“TestKey”,” alert(’TEst Key’); “,true);

April 9, 2007. Ajax.