使用Ajax控件错误：sys.WebForms.PageRequestManagerServerErrorException

sys.WebForms.PageRequestManagerServerErrorException:An unknown error occurred while

processing the request on the server.The status code returned from the server was:404.

 

解决办法：

    <asp:ScriptManager ID="ScriptManager1" runat="server" >
    </asp:ScriptManager> 加入 EnablePartialRendering="false" 属性即可。