摘自網易的一個教程，只是自己猜寫了一個數據操作類，不用作者的組件，最後達到同樣的效果．建議初學者去下載！
界面：
源碼：<%@ Page Language="C#" AutoEventWireup="true" CodeFile="reg.aspx.cs" Inherits="user_reg" %>
<!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>無標題頁</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />
<br />
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="註冊" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label><br />
<br />
<br />
</div>
</form>
</body>
</html>
代碼：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
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.OleDb;
public partial class user_reg : System.Web.UI.Page
{
public Socut myData = new Socut();
public OleDbDataReader dr;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
dr = myData.Read("SELECT * FROM socut_user WHERE u_name='" + TextBox1.Text + "'");
if (dr.Read())//如果存在相同用戶名
{
Label1.Text = "用戶已被註冊！";
}
else
{
//此處執行用戶信息插入數據庫的過程
myData.GetExecuteNonQuery("INSERT INTO socut_user (u_name,u_pass) VALUES ('" + TextBox1.Text + "','" + TextBox2.Text + "')");
Label1.Text = "註冊成功！";
}
}
}