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

namespace finalproject
{
    public partial class login : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            lblErrorMessage.Visible = false;
        }

        protected void btnLogin_Click(object sender, EventArgs e)
        {
            using (SqlConnection sqlcon = new SqlConnection("Data Source=DESKTOP-QMMKITS;Initial Catalog=login"))
            {
                sqlcon.Open();
                string query = "SELECT COUNT(1) FROM TableUser WHERE username=@username AND password=@password";

                SqlCommand sqlCmd = new SqlCommand(query, sqlcon);

                sqlCmd.Parameters.AddWithValue("@username", txtUserName.Text.Trim());
                sqlCmd.Parameters.AddWithValue("@password", txtPassword.Text.Trim());

                int count = Convert.ToInt32(sqlCmd.ExecuteScalar());

                if(count == 1)
                {
                    Session["username"] = txtUserName.Text.Trim();

                    Response.Redirect("test.aspx");
                }
                else
                {
                    lblErrorMessage.Visible = true;
                }

            }
        }
    }
}