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 Login : System.Web.UI.Page
{
     
    protected void Page_Load(object sender, EventArgs e)
    {

    }
   

    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {string sqlstr;
    sqlstr = "select * from LoginUser where name='" + this.username.Text.Trim() + "'";

    DataSet myDataSet = DBHelper.GetDataSet(sqlstr);

    if (myDataSet.Tables[0].Rows.Count > 0)
    {
        string strPwd = myDataSet.Tables[0].Rows[0]["Password"].ToString();
        string BaseEID = myDataSet.Tables[0].Rows[0]["name"].ToString();
        Session["PWD"] = strPwd;
        if (strPwd != userpwd.Text.Trim())
        {
            this.LabelMsg.Text = "密码错误！";
        }
        else
        {

            string UserName = myDataSet.Tables[0].Rows[0]["name"].ToString();
            Session["CX"] = myDataSet.Tables[0].Rows[0]["Role"].ToString();
            Session["admin"] = username.Text.Trim();
            Response.Redirect("main.aspx?name=" + UserName);

        }
    }
    else
    {
        Response.Write("<script>javascript:alert('对不起，用户名或者密码错误');</script>");
    }
       
         
        

    }
}