private void btnLogin_Click(object sender, EventArgs e) { string connectionString = @"server = SHAWON\SQLEXPRESS;database = bus; integrated security = sspi;"; SqlConnection connection = new SqlConnection(connectionString); connection.Open(); SqlDataAdapter sda = new SqlDataAdapter("Select count(*) From Login where Username='******' and Password = '******'", connection); DataTable dt = new DataTable(); sda.Fill(dt); if (dt.Rows[0][0].ToString() == "1") { MessageBox.Show("Successfully Logged In"); this.Hide(); MDIParent1 ss = new MDIParent1(); ss.Show(); } else { MessageBox.Show("Please Check your Username and password"); } }