private void ImportData() { try { //Loading data into the form: using (DBAuditDataContext dc = new DBAuditDataContext()) { if (ComboName.Text != "") { string strName = null; string strNotes = null; dc.ProSelectContractor(int.Parse(ComboName.SelectedValue.ToString()), ref strName, ref strNotes); TxtName.Text = strName; TxtNotes.Text = strNotes; } else { TxtName.Clear(); TxtNotes.Clear(); } } } catch (NullReferenceException) { } catch (InvalidOperationException) { TxtName.Clear(); TxtNotes.Clear(); BtnDelete.Enabled = false; } catch (Exception ex) { MessageBox.Show(ex.Message); } }