多工段查询存放到DataTable到List<DataTable>集合在C#里面做汇总

private void btnQuery_Click(object sender, EventArgs e)
{
if (cboxFactory.Text=="")
{
MessageBox.Show("请选择厂别！","系统提示");
return;
}
fname = cboxFactory.Text;
//gongyi = cmbGongYi.Text.Trim();
List gongDuans = new List();//工段数组
gongyi = new List();

        for (int i = 0; i < checkedListBox1.Items.Count; i++)
        {
            if (checkedListBox1.GetItemChecked(i))
            {
                gongDuans.Add(checkedListBox1.Items[i].ToString());
            }
        }

        for (int i = 0; i < checkedListBox2.Items.Count; i++)
        {
            if (checkedListBox2.GetItemChecked(i))
            {
                gongyi.Add(checkedListBox2.Items[i].ToString());
            }
        }
        backgroundWorker1.RunWorkerAsync(gongDuans);
        ChangState();
    }
    Thread myThread; 
    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        myThread = Thread.CurrentThread;
        List<string> gongDuans =(List<string>)e.Argument;
        String gongyis = "";
        if (gongyi.Count > 0)
        { 

            for (int j = 0; j < gongyi.Count; j++)
            {

                gongyis = gongyis + gongyi[j];
                if (j != gongyi.Count-1) gongyis = gongyis + "-";
            }
        }
        if (gongDuans.Count>0)
        {
            List<DataTable> dts = new List<DataTable>();
            for (int i = 0; i < gongDuans.Count; i++)
            {
                if (!backgroundWorker1.CancellationPending)
                {
                    
                    dts.Add(GetDuiZhi(gongDuans[i],fname,gongyis));
                    
                }
            }
            
            backgroundWorker1.ReportProgress(100, dts);
        }
    }

    private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        try
        {
            List<DataTable> dtPays = e.UserState as List<DataTable>;
            Aspose.Cells.Workbook workbook = new Aspose.Cells.Workbook();
            workbook.Open(Application.StartupPath + @"Templates在制品堆积表1.xlt");
            Aspose.Cells.Worksheet sheet = workbook.Worksheets[0];//第一个工作表
            sheet.Cells["B2"].PutValue(cboxFactory.Text);
            quTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm");
            sheet.Cells["J2"].PutValue(quTime);
            int lastIndex = 3;

            #region 构造带汇总的新集合
            List<DataTable> dtNewPays = new List<DataTable>();
            if (dtPays != null && dtPays.Count > 0)
            {
                foreach (DataTable item in dtPays)
                {                       
                    DataRow newRow = item.NewRow();
                    int orderPaiNum=0 
                        ,Lnum=0 
                        ,Tnum=0
                        ,duiZhiNum=0
                        ,rong=0;
                    decimal LAh = 0
                            , TAh = 0;
                 

                    //newRow["gongDuan"] = item.Rows[0]["gongDuan"].ToString()+"合计"; 

                    orderPaiNum = Convert.ToInt32(item.Compute("sum(orderPaiNum)", "true") is DBNull ? 0 : item.Compute("sum(orderPaiNum)", "true"));
                    newRow["orderPaiNum"] = orderPaiNum;

                    Lnum = Convert.ToInt32(item.Compute("sum(Lnum)", "true") is DBNull ? 0 : item.Compute("sum(Lnum)", "true"));
                    newRow["Lnum"] = Lnum;

                    Tnum = Convert.ToInt32(item.Compute("sum(Tnum)", "true") is DBNull ? 0 : item.Compute("sum(Tnum)", "true"));
                    newRow["Tnum"] = Tnum;


                    duiZhiNum = Convert.ToInt32(item.Compute("sum(duiZhiNum)", "true") is DBNull ? 0 : item.Compute("sum(duiZhiNum)", "true"));
                    //if (newRow["gongDuan"].ToString()=="制片合计")
                    //    newRow["duiZhiNum"] = Convert.ToInt32(duiZhiNum/2);
                    //else
                    newRow["duiZhiNum"] =duiZhiNum;

                    rong = Convert.ToInt32(item.Compute("sum(rong)", "true") is DBNull ? 0 : item.Compute("sum(rong)", "true"));
                    newRow["rong"] = rong;

                    LAh = Convert.ToDecimal(item.Compute("sum(LAh)", "true") is DBNull ? 0 : item.Compute("sum(LAh)", "true"));
                    newRow["LAh"] = LAh;

                    TAh = Convert.ToDecimal(item.Compute("sum(TAh)", "true") is DBNull ? 0 : item.Compute("sum(TAh)", "true"));
                    newRow["TAh"] = TAh;
                   
                    item.Rows.Add(newRow);

                    //新增列(该列隐藏)
                    //item.Columns.Add(new DataColumn("duiZhiNum1", typeof(Int32)));
                    //foreach (DataRow row in item.Rows)
                    //{
                    //    //制片堆积个数除以2
                    //    if (row["gongDuan"].ToString() == "制片")
                    //        row["duiZhiNum1"] = Convert.ToDouble(row["duiZhiNum"]) / 2;
                    //    else
                    //        row["duiZhiNum1"] = row["duiZhiNum"];
                    //}

                    //清除0
                    DataTable dtWithOutZrro = ClearZero(item);

                    dtNewPays.Add(dtWithOutZrro);
                    //foreach (DataRow row in item.Rows)
                    //{
                    //    oderPaiNum += Convert.ToInt32(row["oderPaiNum"].ToString() == "" ? "0" : row["oderPaiNum"].ToString());
                    //    Lnum += Convert.ToInt32(row["Lnum"].ToString() == "" ? "0" : row["Lnum"].ToString());
                    //    Tnum += Convert.ToInt32(row["Tnum"].ToString() == "" ? "0" : row["Tnum"].ToString());
                    //    duiZhiNum += Convert.ToInt32(row["duiZhiNum"].ToString() == "" ? "0" : row["duiZhiNum"].ToString());
                    //    rong += Convert.ToInt32(row["rong"].ToString() == "" ? "0" : row["rong"].ToString());

                    //    LAh += Convert.ToDecimal(row["LAh"].ToString() == "" ? "0" : row["LAh"].ToString());
                    //    TAh+=Convert.ToDecimal(row["TAh"].ToString() == "" ? "0" : row["TAh"].ToString())
                    //}
                }
            } 
            #endregion
            if (dtNewPays != null && dtNewPays.Count > 0)
            {
                for (int i = 0; i < dtNewPays.Count; i++)
                {
                    DataTable dt = dtNewPays[i];
                    if (dt.Rows.Count > 0)
                    {
                        sheet.Cells.ImportDataTable(dt, false, "A" + (lastIndex + 1));
                        lastIndex += dt.Rows.Count;
                    }
                }
            }
            sheet.Cells.DeleteRows(lastIndex, 2);
            MemoryStream ms = workbook.SaveToStream();
            ms.Seek(0, SeekOrigin.Begin);
            fpSpread1.OpenExcel(ms);
            ms.Close();


            fpSpread1.Sheets[0].RowCount = lastIndex + 3;
            fpSpread1.Sheets[0].ColumnCount = 16;
            //fpSpread1.Sheets[0].Columns[13].Visible = false;
            fpSpread1.Sheets[0].OperationMode = FarPoint.Win.Spread.OperationMode.ReadOnly;
        }
        catch(Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }


       /// <summary>
    /// 清除零值
    /// </summary>
    /// <returns></returns>
    public DataTable ClearZero(DataTable dt)
    {
        DataTable result = dt.Clone();
        for (int i = 0; i < dt.Rows.Count; i++)
        {
            DataRow dr = result.NewRow();
            for (int j = 0; j < dt.Columns.Count; j++)
            {
                if (dt.Rows[i][j].ToString() == "0" || dt.Rows[i][j].ToString() == "0.00%")
                {
                    dr[j] = DBNull.Value;
                }
                else
                {
                    dr[j] = dt.Rows[i][j];
                }
            }
            result.Rows.Add(dr);
        }
        return result;
    }