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【asp.net 】使用js结合hidden控件实现在后台运行一段程序后提示确认,确认通过后继续执行后台代码~~~

2009-05-21 14:53 1476 查看
后台代码:

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Label1.Text = "";
}
protected void Button1_Click(object sender, EventArgs e)
{
string text = TextBox1.Text;
if (Hidden1.Value == "1")
{
if (returnString("insert into student select '" + text + "'") == "1")
{
Label1.Text = text + "保存成功";
}
else
{
Label1.Text = text + "保存失敗";
}
Hidden1.Value = "0";
TextBox1.Text = "";
}
else
{
string tt = "";
if (text.Trim() == "")
{
tt = "alert('不要提交空值!')";
}
else
{
DataSet ds = new DataSet();
ds = returnDS("select count(1)  from student where username='" + text + "'");
string content = text + "在資料庫中的個數為:" + ds.Tables[0].Rows[0][0].ToString() + ",確定保存?";
tt = "var rs=window.confirm(/" " + content + " /");";
tt += "if(rs){document.getElementById(/"" + Hidden1.ClientID + "/").value=/"1/";document.getElementById(/"" + Button1.ClientID + "/").click(); }else{ };";
}
this.Page.RegisterStartupScript("aa", "<mce:script ><!--
" + tt + "
// --></mce:script>");
}
}

public DataSet returnDS(string sql)
{
string connstr = "Data Source=xxxx;initial catalog=xxxx;user id=xxxx;password=xxxx";
SqlConnection myconn = new SqlConnection(connstr);
myconn.Open();
SqlCommand mycomm = new SqlCommand();
mycomm.Connection = myconn;
mycomm.CommandText = sql;
mycomm.CommandType = CommandType.Text;
SqlDataAdapter da = new SqlDataAdapter(mycomm);
DataSet ds = new DataSet();
da.Fill(ds, "table");
myconn.Close();
return ds;
}

public string returnString(string sql)
{
try
{
string connstr = "Data Source=xxxx;initial catalog=xxxx;user id=xxxx;password=xxxx";
SqlConnection myconn = new SqlConnection(connstr);
myconn.Open();
SqlCommand mycomm = new SqlCommand();
mycomm.Connection = myconn;
mycomm.CommandText = sql;
mycomm.CommandType = CommandType.Text;
mycomm.ExecuteNonQuery();
myconn.Close();
return "1";
}
catch (Exception ex)
{
return "2";
}
}

}


前台代码:

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
<input id="Hidden1" runat="server" style="width: 14px" type="hidden" />
<asp:Label ID="Label1" runat="server"></asp:Label></div>

</form>
<div id="aa"></div>
</body>
</html>
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