A.Add the following marktip to UpdatePanel1.  <Triggers>  <asp:PostBackTrigger ControlID="btnSave" />  </Triggers>  
B.Set the UpdateMode property for the UpdatePanel2 to "Always"
C.Add the following markup to UpdatePanel2  <Triggers>  <asp:AsyncPostBackTrigger ControlID="btnSave"  EventName="Click" />  </Triggers>  
D.Set the UpdateMode property for UpdatePanel2 to "Conditional"

A.Enable the User-unhandled option for SqlException in Visual Studio Exception configuration.
B.Set the value of the customErrors element‟s mode attribute to “on” in the web.config file.
C.Manually attach the Visual Studio debugger to Internet Explorer.
D.Enable the thrown option for SqlException in Visual Studio exception configuration.

A.<% Page EnableViewState=”true” ViewStateMode=”Enabled” _ %>
B.<% Page EnableViewState=”true” ViewStateMode=”Disabled” _ %>
C.<% Page EnableViewState=”false” ViewStateMode=”Disabled” _ %>
D.<% Page EnableViewState=”false” ViewStateMode=”Enabled” _ %>

A.Configure the Web site to enable session state.
B.Configure the Web site to require authentication and to use personalization.
C.Add a ProxyWebPartManager control to the page.
D.Add a AppearanceEditorPart control to the page.

A.Master
B.Default
C.Shared
D.Common

A.Server session
B.Cookie
C.ViewState
D.Hidden Field

A.var n = $（“input：checked”）.length；
B.var n = $（“：input， ：checked”）.length；
C.var n = $（“input：selected”）.length；
D.var n = $（“：input， ：selected”）.length；