ajax使用updatepanel控件激活其他控件的方法

  <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <Triggers>
                <asp:PostBackTrigger ControlID="btnNew" />
                <asp:PostBackTrigger ControlID="btnDelete" />
                <asp:PostBackTrigger ControlID="BtnOK" />
                <asp:PostBackTrigger ControlID="BtnNO" />
            </Triggers>
            <ContentTemplate>

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