logoin.aspx.cs

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

namespace bookmessage
{
	/// <summary>
	/// WebForm1 的摘要说明。
	/// </summary>
	public class WebForm1 : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.TextBox name;
		protected System.Web.UI.WebControls.TextBox password;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.Label l;
		protected System.Web.UI.WebControls.Label Label2;
	
		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.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Button2.Click += new System.EventHandler(this.Button2_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button2_Click(object sender, System.EventArgs e)
		{
			name.Text="";
			password.Text="";
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			string con="data source=(local);database=bookmessage;uid=sa;pwd=";
			SqlConnection conn=new SqlConnection(con);
			conn.Open();
			string sql="select * from user1 where name='"+name.Text+"'and password='"+password.Text+"'";
			SqlCommand com=new SqlCommand(sql,conn);
			SqlDataReader dr=com.ExecuteReader();
			if(dr.Read())
			{
				Response.Redirect("main.aspx");

			}
			else
			{
			   l.Visible=true;
				l.Text="密码或者用户名字有错误！";
			}
		}
	}
}