admin/Login.aspx.cs

微信扫码关注公众号，代码整理好后第一时间通知你。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

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

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        if (TextBox2.Text.ToString().Trim() == "" || TextBox1.Text.ToString().Trim() == "")
        {
            Response.Write("<script>javascript:alert('用户名或密码不能为空');history.back();</script>");
            Response.End();
        }
        string sql = "select * from Admin where Name='" + TextBox1.Text.ToString().Trim() + "' and Pass='" + TextBox2.Text.ToString().Trim() + "'";
        DataSet result = new DataSet();
        sqlConn conn = new sqlConn();
        result = conn.hsggetdata(sql);
        if (result != null)
        {
            if (result.Tables[0].Rows.Count > 0)
            {
                Session["username"] = TextBox1.Text.ToString().Trim();
                Session["ID"] = result.Tables[0].Rows[0]["ID"].ToString();
                Session["Pass"] = TextBox2.Text.ToString().Trim();
                Response.Redirect("main.aspx");
            }
            else
            {
                Response.Write("<script>javascript:alert('对不起，用户名或密码不正确!');</script>");
            }
        }
        else
        {
            Response.Write("<script>javascript:alert('对不起，系统错误，请不要越权操作!');</script>");
        }
    }
}