页面出现提示框Sys.WebForms.PageRequestManagerTimeoutException:The Server request tiemd out.解决思路

页面出现提示框Sys.WebForms.PageRequestManagerTimeoutException:The Server request tiemd out.
页面出现提示框Sys.WebForms.PageRequestManagerTimeoutException:The   Server   request   tiemd   out.

请问怎么解决？谢谢！

------解决方案--------------------
try:
<asp:ScriptManager ID= "ScriptManager1 " AsyncPostBackTimeOut= "36000 " runat= "server " />