求助登录验证模块
using System;using System.Collections;
using
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 LiuYanBan
{
/// <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 Label2;
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;
protected System.Web.UI.WebControls.LinkButton LinkButton1;
protected System.Web.UI.WebControls.Label Label3;
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 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.LinkButton1.Click += new System.EventHandler(this.LinkButton1_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void Button1_Click(object sender, System.EventArgs e)
{
try
{
//进行数据库的连接
string strconn="server=E4D8FD724D41443;uid=sa;pwd=sa;database=DataBase";
string strcmd="select count(*) from User where (UserName like '" +TextBox1.Text+ " ' and Pwd like'" +TextBox2.Text+ "')";
//string strCmd = "select count(*) from book where (name like'" + TextBox1.Text + "' and password like'" + TextBox2.Text + "')";
SqlConnection myconnection=new SqlConnection();
myconnection.ConnectionString=strconn;
SqlCommand mycommand=new SqlCommand(strcmd,myconnection);
mycommand.Connection.Open();
int flag=(int)mycommand.ExecuteScalar();
mycommand.Connection.Close();
myconnection.Close();
if(flag>0)//用户存在的话
{
Session["UserName"]=TextBox1.Text;
Response.Redirect("WebForm3.aspx");
}
else
{
Label3.Text="对不起！用户名密码不符";
TextBox1.Text="";
TextBox2.Text="";
}
}
catch
{
Label3.Text="出现问题了";
}
}
