asp:button按下弹出javascript确认窗口

[weeksun23]

我想实现这样一个效果：
当asp:button按下后，弹出javascript确认窗口，当选择是时，就继续执行asp:button click的剩余代码（有更新数据库操作）否则就不执行，这样应该如何编写代码呢？？（实现语言为C#）

[遥望那些年]

<script>
function conf()
{
if(confirm("are you sure?"))
return true;
else
return false;
}
</script>

<asp:button onclick="return conf();" />

[threenewbee]

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication1
{
    public partial class _Default : System.Web.UI.Page
    {
        private int curr = 0;

        protected void Page_Load(object sender, EventArgs e)
        {
            string s = "";
            try
            { s = this.Request.QueryString["confirm"]; }
            catch
            { }
            if (s == "true")
            { curr = 1; Button1_Click(this, new EventArgs()); }
            else
            { curr = 0; }
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            if (curr == 0)
            {
                ClientScript.RegisterClientScriptBlock(this.GetType(), "key", "<script type='text/javascript'>if(confirm('继续?'))location='default.aspx?confirm=true'</script>");
                return;
            }
            if (curr == 1)
            {
                ClientScript.RegisterClientScriptBlock(this.GetType(), "key", "<script type='text/javascript'>alert('你选择了继续')</script>");
                return;
            }
        }
    }
}

[threenewbee]

<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
    CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">

        <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />

</asp:Content>

[weeksun23]

是否应改为
if (curr == 1)
{
ClientScript.RegisterClientScriptBlock(this.GetType(), "key", "<script type='text/javascript'>alert('你选择了继 续');location='default.aspx';</script>");
return;
}

不然的话 不断刷新页面 会弹出‘你选择了继续’窗口

[threenewbee]

ClientScript.RegisterClientScriptBlock(this.GetType(), "key", "<script type='text/javascript'>if(confirm('继续?'))location='default.aspx?confirm=true'</script>");

=>

ClientScript.RegisterClientScriptBlock(this.GetType(), "key", "<script type='text/javascript'>if(confirm('继续?'))location='default.aspx?confirm=true;else location='default.aspx?confirm=false;'</script>");

[#blackheart]

<asp:Button ID="Button1" runat="server" Text="Button"
OnClientClick="return confirm('提示信息');" onclick="Button1_Click" />

[遥望那些年]

<script language="javascript" type="text/javascript">
function check()
    {
        if(confirm("确认此操作？"))
            return true;
        else
            return false;
    }
</script>
<asp:Button ID="Save" runat="server" Text="保存" OnClick="Save_Click" OnClientClick="return check()" />

[weeksun23]

ding