updatepanelupdatepanel
asyncpostbacktrigger(异步回调触发器):局部刷新,只刷新updatepanel内部的内容
postbacktrigger(普通回调触发器):全部刷新
<asp:ScriptManager runat="server">
</asp:ScriptManager> //必须有且一定在updatepanel前面
<asp:UpdatePanel runat="server">
<ContentTemplate>
<% =DateTime.Now.ToString()%>
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="btn" />
<asp:AsyncPostBackTrigger ControlID="btn2" EventName="click" />
</Triggers>
</asp:UpdatePanel>
<asp:Button runat="server" Text="刷新1"/>
<asp:Button runat="server" Text="刷新2" />
<% =DateTime.Now.ToString()%>
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儿子不听话了