extjs.net 按钮执行并显示Mask代码

<ext:Button ID="ButtonTest" runat="server"  Width="65" Text="同步"
ToolTip="点击同步">
<DirectEvents>
<Click OnEvent="btnSync_Click" Timeout="300000" Before=" if(!confirm('执行等待,继续吗?')) return false;">
<EventMask Msg="同步中.." ShowMask="true" />
</Click>
</DirectEvents>
</ext:Button>

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转载自www.cnblogs.com/zhaogaojian/p/9150815.html