private void DeleteBarItem_Click(object sender, EventArgs e) { if (patientInfo != null) { DialogResult dialogResult = XtraMessageBox.Show("You really want to delete the selected element?", "Sure", MessageBoxButtons.YesNo); if (dialogResult == DialogResult.Yes) { if (!_DB.DeletePatientInfo(patientInfo)) { XtraMessageBox.Show("Element is not deleted!"); } _patientInfo = _DB.GetPatientInfo(); PatientInfoGridControl.DataSource = _patientInfo; } } else { XtraMessageBox.Show("Element is not selected!"); } }