private void button1_Click(object sender, EventArgs e)
        {
            SqlConnection con = new SqlConnection();
            con.ConnectionString = "data source = JBB-690AB60E108;,Initial catalog = True; Integrated Security = True";
            con.Open();
            
            SqlCommand cmd = new SqlCommand("select username,pass  from loge where username=@UserName and pass=@password ", con);
            cmd.Parameters.Add("@UserName", SqlDbType.VarChar, 10);
            cmd.Parameters.Add("@password", SqlDbType.VarChar, 15);
            
            cmd.Parameters["@UserName"].Value = textBox1.Text;
            cmd.Parameters["@password"].Value = textBox2.Text;
            
            if ((cmd.ExecuteReader().HasRows))
            {
                MessageBox.Show("Welcome");
            }       
            else
            {
                MessageBox.Show("Check the UserName or Password", "Incorrect Entry", MessageBoxButtons.RetryCancel, MessageBoxIcon.Exclamation);
            }
        }
        }
    }