private void BtnSearchDocNo_Click(object sender, EventArgs e) { try { using (DBAuditDataContext dc = new DBAuditDataContext()) { // Search progress: var c = dc.ProGetDoctorBillByDocNo(TxtDocNo.Text); GrdViewDoctorBills.DataSource = c; // Formatting the form BtnSearchPayDate.Enabled = false; BtnSearchLocation.Enabled = false; BtnSearchDoctor.Enabled = false; ComboLocation.Text = ""; ComboDoctor.Text = ""; } } catch (Exception EX) { MessageBox.Show(EX.Message); } }