private void DeleteAgreedTermBarItem_Click(object sender, EventArgs e) { if (agreedTerm != null) { DialogResult dialogResult = XtraMessageBox.Show("You really want to delete the selected element?", "Sure", MessageBoxButtons.YesNo); if (dialogResult == DialogResult.Yes) { if (!_DB.DeleteAgreedTerm(agreedTerm)) { XtraMessageBox.Show("Element is not deleted!"); } _agreedTerm = _DB.GetAgreedTerm(); AgreedTermGridControl.DataSource = _agreedTerm; agreedTerm = null; HideShowElement(false); DoctorLE.EditValue = null; } } else { XtraMessageBox.Show("Element is not selected!"); } }