webform1.aspx.cs

数据库课程设计----什么都有

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 WebApplication11
{
	/// <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.TextBox name;
		protected System.Web.UI.WebControls.TextBox pwd;
		protected System.Web.UI.WebControls.Label lbl_message;
		protected System.Web.UI.WebControls.Label Label2;
		protected SqlCommand com1;
		protected SqlDataAdapter ada;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.Label Label4;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator1;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator2;
		protected System.Web.UI.WebControls.ImageButton ImageButton1;
		protected System.Web.UI.WebControls.ImageButton ImageButton2;
		protected System.Web.UI.WebControls.Image Image1;
		protected System.Web.UI.WebControls.Label Label5;
		protected System.Web.UI.WebControls.Image Image2;
		protected SqlConnection conn;
	
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			conn=new SqlConnection("Data source=.;Database=toupiao;Integrated Security=SSPI");
			conn.Open();
			com1=new SqlCommand();
			ada=new SqlDataAdapter();
			if(!Page.IsPostBack)
			{
				dbind();
			}
			// 在此处放置用户代码以初始化页面

		}

		//
		public void dbind()
		{
			string sql="select * from 总联系人" ;
			com1.Connection=conn;
			com1.CommandText=sql;
			ada.SelectCommand=com1;
			DataSet ds=new DataSet();
			ada.Fill(ds,"toupiao");
			
		}
		//
		#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.RequiredFieldValidator2.DataBinding += new System.EventHandler(this.Button1_Click);
			this.name.TextChanged += new System.EventHandler(this.name_TextChanged);
			this.RequiredFieldValidator1.DataBinding += new System.EventHandler(this.Button1_Click);
			this.ImageButton1.Click += new System.Web.UI.ImageClickEventHandler(this.ImageButton1_Click);
			this.ImageButton2.Click += new System.Web.UI.ImageClickEventHandler(this.ImageButton2_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion


		
		/*private void ImageButton3_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
		Response.Redirect("zhuce.aspx");
		}*/

		private void Button1_Click(object sender, System.EventArgs e)
		{
			conn=new SqlConnection();
			conn.ConnectionString="Server=.;Database=toupiao;uid=sa;pwd=";
			conn.Open();
            
			string mysql= "select * from userinfo where name='"+name.Text +"'and password='"+pwd.Text +"'";
			//创建Command对象
			SqlCommand cm=new SqlCommand  (mysql,conn);
			//执行ExecuteReader ()方法
			SqlDataReader dr=cm.ExecuteReader ();
			if(dr.Read ())
			{
				lbl_message.Text= "";
				Response.Redirect("dengru.aspx");
				
				//保存当前用户名及用户权限
				//Session["Name"]=dr["Name"];

				//	lbl_message.Text="您好 "+Session["Name"]+" ! "+"欢迎您进入electronicbookstore .";
			}
			else
			{
				lbl_message.Text ="对不起，您输入的用户名/密码不正确或不存在，请重新输入";
			}
			name.Text="";
			pwd.Text="";
         
			
		
		}

		private void name_TextChanged(object sender, System.EventArgs e)
		{
		
		}

		private void Button2_Click(object sender, System.EventArgs e)
		{
			Response.Redirect("zhuce.aspx");
		}

		private void ImageButton1_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			conn=new SqlConnection();
			conn.ConnectionString="Server=.;Database=toupiao;uid=sa;pwd=";
			conn.Open();
            
			string mysql= "select * from userinfo where name='"+name.Text +"'and password='"+pwd.Text +"'";
			//创建Command对象
			SqlCommand cm=new SqlCommand  (mysql,conn);
			//执行ExecuteReader ()方法
			SqlDataReader dr=cm.ExecuteReader ();
			if(dr.Read ())
			{
				lbl_message.Text= "";
				Response.Redirect("dengru.aspx");
				
				//保存当前用户名及用户权限
				//Session["Name"]=dr["Name"];

				//	lbl_message.Text="您好 "+Session["Name"]+" ! "+"欢迎您进入electronicbookstore .";
			}
			else
			{
				lbl_message.Text ="对不起，您输入的用户名/密码不正确或不存在，请重新输入";
			}
			name.Text="";
			pwd.Text="";
         
			//关闭连接
			//conn.Close();
		
		}

		private void ImageButton2_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			Response.Redirect("zhuce.aspx");
		}
	}
}