private void LoadPhoneList() { PhoneList.Rows.Clear(); PhoneList.Columns.Clear(); PhoneList.Columns.Add("Id", "Id"); PhoneList.Columns.Add("Name", "Name"); PhoneList.Columns.Add("Phone_Number", "Phone_Number"); int rowNumber; foreach (var phone in AsmxService.GetPhones().ToList()) { rowNumber = PhoneList.Rows.Add(); PhoneList.Rows[rowNumber].Cells["Id"].Value = phone.Id; PhoneList.Rows[rowNumber].Cells[0].ReadOnly = true; PhoneList.Rows[rowNumber].Cells["Name"].Value = phone.Last_name; PhoneList.Rows[rowNumber].Cells["Phone_Number"].Value = phone.Phone_number; } }