register.aspx.cs

留言板得源代码 是初学网络的较好代码

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

namespace Aspnet
{
	/// <summary>
	/// Register 的摘要说明。
	/// </summary>
	public class Register : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Button BT_submit;
		protected System.Web.UI.WebControls.Button BT_reset;
		protected System.Web.UI.WebControls.TextBox TB_UserName;
		protected System.Web.UI.WebControls.TextBox TB_Pwd;
		protected System.Web.UI.WebControls.TextBox TB_Pswd;
		protected System.Web.UI.WebControls.RadioButtonList RBL_Sex;
		protected System.Web.UI.WebControls.TextBox TB_Email;
		protected System.Web.UI.WebControls.RequiredFieldValidator RFV_UserName;
		protected System.Web.UI.WebControls.RequiredFieldValidator RFV_Pwd;
		protected System.Web.UI.WebControls.CompareValidator CV_Pswd;
		protected System.Web.UI.WebControls.RegularExpressionValidator REV_Email;
		protected System.Web.UI.WebControls.HyperLink HyperLink1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void BT_submit_Click(object sender, System.EventArgs e)
		{
			//建立数据库连接
			string connstr="server=localhost;database=Aspnet;uid=sj;pwd=";
			string strsql="select count(*) from UserInfo where UserName like '"+TB_UserName.Text+"'";
			SqlConnection Conn=new SqlConnection(connstr);
			SqlCommand mycommand=new SqlCommand(strsql,Conn);
			Conn.Open();
			//查看用户名是否已经存在
			int flag=(int)mycommand.ExecuteScalar();
			Conn.Close();
			if(flag==0)
			{
				//向数据库中添加一条用户记录
				string WebSite;
				WebSite=Request.UserHostAddress.ToString();
				string selectstr="insert into UserInfo (UserName,Pwd,Sex,Email,Website,RegTime) values ('" +TB_UserName.Text+"','"+ TB_Pwd.Text + "','"+RBL_Sex.SelectedItem.Value+"','"+TB_Email.Text + "','"+WebSite+"',getdate())";
				//				Label1.Text=selectstr;
				SqlCommand addcommand=new SqlCommand(selectstr,Conn);
				Conn.Open();
				addcommand.ExecuteNonQuery();
				Conn.Close();				
				Session["username"]=TB_UserName.Text;
				Session["Sex"]=RBL_Sex.SelectedItem.Value;
				Label1.Text="注册成功，请先登录！";				
			}
			else
			{
				Label1.Text="对不起，该用户名已经存在，请选择其他用户名！";
				TB_UserName.Text="";
				TB_Pwd.Text="";
				TB_Pswd.Text="";
			}
		}

		private void BT_reset_Click(object sender, System.EventArgs e)
		{
			Response.Redirect("Register.aspx");
		}
	}
}