//public static string UserName = ""; private void btLogin_Click(object sender, EventArgs e) { SqlCommand command = new SqlCommand(); command.Connection = con; command.CommandType = CommandType.Text; command.CommandText = @"Select * From tblAccount Where (fldUsername = @User) And (fldPassword = @Pass)"; command.Parameters.Add("@User", SqlDbType.NVarChar, 50).Value = txtUsername.Text; command.Parameters.Add("@Pass", SqlDbType.NVarChar, 50).Value = txtPassword.Text; da.SelectCommand = command; da.Fill(dt); if (dt.Rows.Count > 0) { frmMain1 main = new frmMain1(applicationConfiguration); main.Show(); Hide(); } else { if (MessageBox.Show(languagePackage.getAskRetryLoginMessage(), languagePackage.getAskRetryLoginTitle(), MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes) { txtUsername.Focus(); } else { Close(); Dispose(); disconnect(); System.Windows.Forms.Application.Exit(); } } }