public void page_load(Object obj,EventArgs e)
{
btn.Attributes.Add("onclick","state=true;");
StringBuilder sb=new StringBuilder();
sb.Append("if (!state) return;");
sb.Append("var button=document.getElementById('btn');");
sb.Append("button.value=/" Please Wait... /";");
sb.Append("document.body.style.cursor='wait';");
sb.Append("button.disabled=true;");
string strScript="<script>";
strScript=strScript +"var state=false;";
//将函数绑定到页面的onbeforeunload事件:
strScript=strScript +"window.attachEvent('onbeforeunload',function(){" +sb.ToString()+ "});";
strScript=strScript +"</"+"script>";
Page.RegisterStartupScript("onbeforeunload",strScript);
}
private void Submit_Click(Object sender, EventArgs e){
//模拟长时间的按钮处理
System.Threading.Thread.Sleep(3000);
Response.Write("<script>alert(xxx!!');"+"</"+"script>");
}
