Epicor_Integration.RevCompare.refresh_btn_Click C# (CSharp) Метод

        private void refresh_btn_Click(object sender, EventArgs e)
        {
            try
            {
                this.Cursor = System.Windows.Forms.Cursors.AppStarting;

                status.Text = "Status: Working";

                Epicor.Mfg.BO.BomSearch BomSearch = new Epicor.Mfg.BO.BomSearch(DataList.EpicConn);

                DS0 = new DataSet();

                DS0.Tables.Add();

                DS0.Tables[0].Columns.Add("Pnum");

                DS0.Tables[0].Columns.Add("Qty1");

                DS0.Tables[0].Columns.Add("Qty2");

                DS0.Tables[0].Columns.Add("Desc");

                DS0.Tables.Add();

                DS0.Tables[1].Columns.Add("Seq");

                DS0.Tables[1].Columns.Add("Code");

                DS0.Tables[1].Columns.Add("ProdHrs1");

                DS0.Tables[1].Columns.Add("ProdHrs2");

                DS1 = (DataSet)BomSearch.GetDatasetForTree(pnum_txt.Text, rev1.SelectedValue.ToString(), "", true, DateTime.Now, false);

                if (rev2.Enabled)
                    DS2 = (DataSet)BomSearch.GetDatasetForTree(pnum_txt.Text, rev2.SelectedValue.ToString(), "", true, DateTime.Now, false);

                backgroundWorker1.RunWorkerAsync();

                refresh_btn.Enabled = !backgroundWorker1.IsBusy;

                pnum_txt.Enabled = !backgroundWorker1.IsBusy;

                rev1.Enabled = !backgroundWorker1.IsBusy;

                if (!FromSW)
                    rev2.Enabled = (!backgroundWorker1.IsBusy);

                toClipboard_btn.Enabled = !backgroundWorker1.IsBusy;
            }
            catch (Exception ex)
            {
                MessageBox.Show("This item may not have a revision already approved.", "Error!");
            }
        }