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问题就是标题本身。
__doPostBack('<%=btnABC.UniqueID %>', '') and onClick="Button1_Click"
您可以参考以下讨论相同的线程: 客户端浏览器的提交机制和 ASP.NET 回发机制有什么区别? &
来自 JavaScript 的按钮点击/页面提交