private void submitbutton_Click(object sender, EventArgs e) { if (string.IsNullOrEmpty(lnametextbox.Text)) { MessageBox.Show("Please Enter Email.", "Message", MessageBoxButtons.OK, MessageBoxIcon.Warning); lnametextbox.Focus(); return; } else if (string.IsNullOrEmpty(lpasswordtextbox.Text)) { MessageBox.Show("Please Enter Password.", "Message", MessageBoxButtons.OK, MessageBoxIcon.Warning); lpasswordtextbox.Focus(); return; } try { LogIn log = new LogIn(); email = lnametextbox.Text; password = lpasswordtextbox.Text; log = (LogIn)da.login(email, password); if (lnametextbox.Text == log.Email && lpasswordtextbox.Text == log.Password) { da.setLogInfo(log.Email); if (log.Type == "RECEPTIONIST") { loginName = log.Email; logintabControl.SelectedTab = receptionisttab; } else if (log.Type == "ADMIN") { loginName = log.Email; this.Hide(); adminform = new AdminForm(this); adminform.Show(); lnametextbox.Text = ""; lpasswordtextbox.Text = ""; } } else { MessageBox.Show("Invalid UserName Or Password.", "Message", MessageBoxButtons.OK, MessageBoxIcon.Warning); lpasswordtextbox.Focus(); } } catch (Exception ex) { MessageBox.Show(ex.Message, "Message", MessageBoxButtons.OK, MessageBoxIcon.Error); } }