BKI_DichVuMatDat.F152_DANH_SACH_NHAN_VIEN_EXCEL.M_cmd_chon_file_Click C# (CSharp) Method

        private void M_cmd_chon_file_Click(object sender, EventArgs e)
        {
            try
            {
                SplashScreenManager.ShowForm(typeof(F_wait_form));
                //load_data_2_grid(chon_file());
                OpenFileDialog opf = new OpenFileDialog();
                opf.Filter = "Office Files|*.xlsx;*.xls;";
                opf.Multiselect = false;
                if (opf.ShowDialog() == DialogResult.OK)
                {
                    if (String.IsNullOrEmpty(opf.FileName))
                    {
                        return;
                    }
                    load_data_from_file_to_grid(opf.FileName);
                }
                else
                {
                    m_grc.Refresh();
                    return;
                }
            }
            catch (Exception v_e)
            {
                XtraMessageBox.Show("Không lấy dữ liệu được từ File Excel Import. Bạn kiểm tra lại File Excel Import nhé!", "THÔNG BÁO", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                //CSystemLog_301.ExceptionHandle(v_e);
            }
            finally
            {
                SplashScreenManager.CloseForm();
            }
        }