using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;


namespace WindowsFormsApplication1
{
    public partial class LOGIN : Form
    {
        public LOGIN()
        {
            InitializeComponent();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void button1_Click(object sender, EventArgs e)
        {

            SqlConnection con = new SqlConnection(@"Data Source=(LocalDB)v11.0;AttachDbFilename=C:UserskenluiDocumentsLoginDate.mdf;Integrated Security=True;Connect Timeout=30;");
            SqlDataAdapter sda = new SqlDataAdapter("Select Count(*) from Login where Username ='" + textBox1.Text + "' and Password = '" + textBox2.Text + "'", con);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            if (dt.Rows[0][0].ToString() == "1")
            {
                this.Hide();
                main ss = new main();
                ss.Show();


            }
            else
            {
                MessageBox.Show("Please Check Username and Password");
            }
        }
    }
}

private void button1_Click(object sender, EventArgs e)
{
    using (SqlConnection con = new SqlConnection(@"Data Source=(LocalDB)v11.0;AttachDbFilename=C:UserskenluiDocumentsLoginDate.mdf;Integrated Security=True;Connect Timeout=30;"))
    using (SqlDataAdapter sda = new SqlDataAdapter("Select Count(*) from Login where Username = @userName and Password = @password", con))
    using (DataTable dt = new DataTable())
    {
        sda.SelectCommand.Parameters.Add(new SqlParameter("@userName", SqlDbType.VarChar) { Value = textBox1.Text });
        // this should be a hash of the password, not the plain text value
        sda.SelectCommand.Parameters.Add(new SqlParameter("@password", SqlDbType.VarChar) { Value = textBox2.Text });

        sda.Fill(dt);
        if (dt.Rows[0][0].ToString() == "1")
        {
            this.Hide();
            main ss = new main();
            ss.Show();
        }
        else
        {
            MessageBox.Show("Please Check Username and Password");
        }
    }
}

private void button1_Click(object sender, EventArgs e)
{
    using (SqlConnection con = new SqlConnection(@"Data Source=(LocalDB)v11.0;AttachDbFilename=C:UserskenluiDocumentsLoginDate.mdf;Integrated Security=True;Connect Timeout=30;"))
    using (SqlCommand sda = new SqlCommand("Select 1 from Login where Username = @userName and Password = @password", con))
    {
        sda.Parameters.Add(new SqlParameter("@userName", SqlDbType.VarChar) { Value = textBox1.Text });
        // this should be a hash of the password, not the plain text value
        sda.Parameters.Add(new SqlParameter("@password", SqlDbType.VarChar) { Value = textBox2.Text });
        var result = sda.ExecuteScalar();

        if (result != null && 1 == (int)result)
        {
            this.Hide();
            main ss = new main();
            ss.Show();
        }
        else
        {
            MessageBox.Show("Please Check Username and Password");
        }
    }
}