asp.net页面中弹出对话框 选择“确定”后实现事件回调

方法一：
protected void Button2_Click(object sender, EventArgs e)
    ...{
        ClientScript.RegisterStartupScript(this.GetType(), "startDate", "<script language='javascript'>if (confirm('确认这样操作?')){document.getElementById('" + this.Button1.ClientID + "').click();} ; </script>");
    } 

Button1为隐藏的“客户端”button，设置runat="server"

在Button1的事件里可以写我们想要的事情。

方法二：
/// <summary>
        /// 实现回调
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Button2_Click(object sender, EventArgs e)
        {
            //ClientScript.RegisterStartupScript(this.GetType(), "sss", "<script>if(confirm('确认这样操作?')){onclick=__doPostBack('Button1','');}</script>");
            ClientScript.RegisterStartupScript(this.GetType(), "startDate", "<script language='javascript'>if (confirm('ok?')){document.getElementById('" +    this.Button1.ClientID + "').click();} ; </script>");

        }
        /// <summary>
        ///
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Button1_Click(object sender, EventArgs e)
        {
            Response.Write("我要创建");
       }