admin/login.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class admin_login : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void ImageButton2_Click(object sender, ImageClickEventArgs e)
    {
        //获取用户名和密码
        string username = this.UserName.Text.Trim();
        string password = this.Password.Text.Trim();

        //合成sql语句
        string sqlstr = "select * from admin where username='" + username + "' and password='" + password + "'";

        //执行查询用户操作
        SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["sq_chaletshopConnectionString"].ToString());
        conn.Open();
        SqlCommand sqlcomm = new SqlCommand(sqlstr, conn);
        SqlDataReader dr = sqlcomm.ExecuteReader();
        if (dr.Read())
        {
            Session["id"] = dr["id"].ToString();
            Session["admin"] = username;
            Response.Redirect("index.html");
        }
        else
        {
            lblMessage.Text = "用户名或密码错误";
            lblMessage.Visible = true;
        }
    }
}