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分享<head runat="server">
<title></title>
<script type="text/javascript">
window.onbeforeunload = function() {
document.getElementById("Button1").click();
}
</script>
</head>
<body >
<form id="form1" runat="server">
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" style="display:none;" />
</form>
</body> protected void Button1_Click(object sender, EventArgs e)
{
//你要执行的后台代码!
}