webform2.aspx.cs

本系统为数据库课程设计

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 mybook
{
	/// <summary>
	/// WebForm2 的摘要说明。
	/// </summary>
	public class WebForm2 : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox password;
		protected System.Web.UI.WebControls.TextBox username;
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.TextBox TextBox2;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Button Button2;
	
		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.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{
			string strCnn="uid=sa;pwd=sa;initial catalog=mybook;data source=localhost;Connect Timeout=90";
			string username1 = TextBox1.Text.ToString();
			string password1 =TextBox2.Text.ToString();
			//string strBland="";
			if( username1.Trim().ToString() == "" )
				return;

			if(password1.Trim().ToString() == "")
				return;
			SqlConnection connUpdate = new SqlConnection(strCnn);
			connUpdate.Open();
			String sql_edit = "SELECT username,password from xyadmin WHERE username='"+username1+"' and password1='"+password+"'";
			SqlCommand sqlCommandUpdate = new SqlCommand(sql_edit,connUpdate);
			SqlDataReader rea=sqlCommandUpdate.ExecuteReader();
			if(rea.Read()==false)
			{	
				return;
			}
			connUpdate.Close();
			Response.Redirect("WebForm4.aspx");
		}

		private void Button2_Click(object sender, System.EventArgs e)
		{
			TextBox1.Text="";
			TextBox2.Text="";
		}
	}
}