private void Login() { if (txtUsername.Text.Trim() == string.Empty) { MessageBox.Show("Username is required", "Message"); } else if (txtPassword.Text.Trim() == string.Empty) { MessageBox.Show("Password is required", "Message"); } else { CheckLoginDto checkedLogin = new CheckLoginDto(); DALCheckedLogin checkedLoginAPI = new DALCheckedLogin(); checkedLogin = checkedLoginAPI.CheckedLogin(txtUsername.Text.Trim(), txtPassword.Text.Trim()); if (!checkedLogin.IsSuccess) { MessageBox.Show(checkedLogin.Message, "Message"); return; } this.Hide(); CRMain frm = new CRMain(); frm.Show(); //frm.ShowDialog(); } }