個人最近做的最多的重複工作就是excel导出

//导出事件，这个是有合并动态列的

double num1 = 0, num2 = 0, num3 = 0;

protected void btnExcel_Click(object sender, ImageClickEventArgs e)

    {
        num1 = 0; num2 = 0; num3 = 0;
        DirectoryInfo fdir = new DirectoryInfo(Server.MapPath(@"\TmpReport"));
        FileInfo[] files = fdir.GetFiles();
        for (int i = 0; i < files.Length - 1; i++)
        {
            if (files[i].Name.IndexOf("tmp") >= 0)
            {
                try
                {
                    files[i].Delete();
                }
                catch (Exception ex)
                {
                }
            }
        }

        string time = DateTime.Now.ToString("yyyyMMddHHmmss");
        FileInfo fi = new FileInfo(Server.MapPath(@"\Excel\每日信貸報告.xls"));
        fi.CopyTo(Server.MapPath(@"\TmpReport\tmp" + time + ".xls"));

        Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
        Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
        Microsoft.Office.Interop.Excel.Workbook xlBook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
        Microsoft.Office.Interop.Excel.Worksheet xlSheet = new Microsoft.Office.Interop.Excel.Worksheet();
        xlBook = xlApp.Workbooks.Open(Server.MapPath(@"\TmpReport\tmp" + time + ".xls"));
        xlSheet = (Microsoft.Office.Interop.Excel.Worksheet)xlBook.Worksheets.get_Item(1);
        int tmpid = 2;
        string rowSheet = "";
        string 可簽額 = "";
        string 戶主名 = "";
        int count1 = 2;
        int count2 = 2;
        int Colorindex = 0;
        for (int i = 0; i < dtList.Rows.Count; i++)
        {
            string rowSheet1 = Convert.ToString(dtList.Rows[i]["戶號"]);
            
            if (rowSheet1 == rowSheet)
            {
                //xlSheet.Cells[tmpid, 1] = "";
                //xlSheet.Cells[tmpid, 2] = "";
                //xlSheet.Cells[tmpid, 3] = "";
            }
            else
            {
                if (rowSheet != "")
                {
                    Microsoft.Office.Interop.Excel.Range integral = (Microsoft.Office.Interop.Excel.Range)xlSheet.get_Range("A" + count1, "A" + (count2 - 1));
                    integral.MergeCells = true;
                    integral.Value = 可簽額;
                    integral.Font.Size = 16;
                    integral.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;

                    integral.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;

                    Microsoft.Office.Interop.Excel.Range integral1 = (Microsoft.Office.Interop.Excel.Range)xlSheet.get_Range("B" + count1, "B" + (count2 - 1));
                    integral1.MergeCells = true;
                    integral1.Value = rowSheet;
                    integral1.Font.Size = 16;
                   // integral1.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;
                    integral1.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
                    integral1.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;

                    Microsoft.Office.Interop.Excel.Range integral2 = (Microsoft.Office.Interop.Excel.Range)xlSheet.get_Range("C" + count1, "C" + (count2 - 1));
                    integral2.MergeCells = true;
                    integral2.Value = 戶主名;
                    integral2.Font.Size = 16;
                    integral2.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
                    integral2.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;

                    Colorindex = 15;
                    if (Colorindex != 0)
                    {
                        Microsoft.Office.Interop.Excel.Range integrals = (Microsoft.Office.Interop.Excel.Range)xlSheet.get_Range("a" + tmpid, "I" + tmpid);
                        integrals.Interior.ColorIndex = 15;
                        Colorindex = 0;
                    }
                    count2++;
                    tmpid++;
                    count1 = count2;
                    
                   
                    //xlSheet.Cells[tmpid, 1] = dtList.Rows[i]["可簽額"];
                    //xlSheet.Cells[tmpid, 2] = dtList.Rows[i]["戶號"];
                    //xlSheet.Cells[tmpid, 3] = dtList.Rows[i]["戶主名"];
                }
                rowSheet = rowSheet1;
                可簽額 = Convert.ToString(dtList.Rows[i]["可簽額"]);
                戶主名 = Convert.ToString(dtList.Rows[i]["戶主名"]);
            }
            
            num1 += Convert.ToDouble(dtList.Rows[i]["貸款額"].ToString());
            num2 += Convert.ToDouble(dtList.Rows[i]["還款額"].ToString());
            num3 += Convert.ToDouble(dtList.Rows[i]["餘額"].ToString());

            xlSheet.Cells[tmpid, 4] = dtList.Rows[i]["借款人"];
            xlSheet.Cells[tmpid, 5] = dtList.Rows[i]["單編號"];

            double a = Convert.ToDouble(dtList.Rows[i]["貸款額"].ToString());

            double b = Convert.ToDouble(dtList.Rows[i]["還款額"].ToString());
            double c = Convert.ToDouble(dtList.Rows[i]["餘額"].ToString());
            string aStr = "", bStr = "", cStr = "";
            if (a != 0)
            {
                aStr = a.ToString("#,##0.####");
            }
            if (b != 0)
            {
                bStr = b.ToString("#,##0.####");
            }
            if (c != 0)
            {
                cStr = c.ToString("#,##0.####");
            }
            xlSheet.Cells[tmpid, 6] = aStr;
            xlSheet.Cells[tmpid, 7] = bStr;
            xlSheet.Cells[tmpid, 8] = cStr;
            xlSheet.Cells[tmpid, 9] = dtList.Rows[i]["下單號"];
            tmpid = tmpid + 1;
            count2++;
        }

        Microsoft.Office.Interop.Excel.Range integral3 = (Microsoft.Office.Interop.Excel.Range)xlSheet.get_Range("A" + count1, "A" + (count2 - 1));
        integral3.MergeCells = true;
        integral3.Value = 可簽額;
        integral3.Font.Size = 16;
        integral3.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
        integral3.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;

        Microsoft.Office.Interop.Excel.Range integral4 = (Microsoft.Office.Interop.Excel.Range)xlSheet.get_Range("B" + count1, "B" + (count2 - 1));
        integral4.MergeCells = true;
        integral4.Value = rowSheet;
        integral4.Font.Size = 16;
        integral4.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
        integral4.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;

        Microsoft.Office.Interop.Excel.Range integral5 = (Microsoft.Office.Interop.Excel.Range)xlSheet.get_Range("C" + count1, "C" + (count2 - 1));
        integral5.MergeCells = true;
        integral5.Value = 戶主名;
        integral5.Font.Size = 16;
        integral5.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
        integral5.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;

        //獲取行
        Microsoft.Office.Interop.Excel.Range rg = (Microsoft.Office.Interop.Excel.Range)xlSheet.Cells[tmpid, 1];

        rg = (Microsoft.Office.Interop.Excel.Range)xlSheet.Cells[tmpid, 1];
        rg.Interior.ColorIndex = 15;
        rg = (Microsoft.Office.Interop.Excel.Range)xlSheet.Cells[tmpid, 2];
        rg.Interior.ColorIndex = 15;
        rg = (Microsoft.Office.Interop.Excel.Range)xlSheet.Cells[tmpid, 3];
        rg.Interior.ColorIndex = 15;
        rg = (Microsoft.Office.Interop.Excel.Range)xlSheet.Cells[tmpid, 4];
        rg.Interior.ColorIndex = 15;
        rg = (Microsoft.Office.Interop.Excel.Range)xlSheet.Cells[tmpid, 5];
        rg.Interior.ColorIndex = 15;
        rg = (Microsoft.Office.Interop.Excel.Range)xlSheet.Cells[tmpid, 6];
        rg.Interior.ColorIndex = 15;
        rg = (Microsoft.Office.Interop.Excel.Range)xlSheet.Cells[tmpid, 7];
        rg.Interior.ColorIndex = 15;
        rg = (Microsoft.Office.Interop.Excel.Range)xlSheet.Cells[tmpid, 8];
        rg.Interior.ColorIndex = 15;
        rg = (Microsoft.Office.Interop.Excel.Range)xlSheet.Cells[tmpid, 9];
        rg.Interior.ColorIndex = 15;

        xlSheet.Cells[tmpid, 1] = "";
        xlSheet.Cells[tmpid, 2] = "";
        xlSheet.Cells[tmpid, 3] = "";
        xlSheet.Cells[tmpid, 4] = "";
        xlSheet.Cells[tmpid, 5] = "合計：";
        xlSheet.Cells[tmpid, 6] = num1.ToString("#,##0.####");
        xlSheet.Cells[tmpid, 7] = num2.ToString("#,##0.####");
        xlSheet.Cells[tmpid, 8] = num3.ToString("#,##0.####");

        xlSheet.SaveAs(Server.MapPath(@"\TmpReport\tmp" + time + "1.xls"));
        xlBook.Close();
        xlApp.Quit();
        Response.Expires = 0;

        Response.Clear();
        Response.Buffer = true;
        Response.Charset = "utf-8";
        Response.ContentEncoding = System.Text.Encoding.UTF8;
        Response.ContentType = "application/vnd.ms-excel";
        Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode("每日信貸報告.xls"));
        Response.WriteFile(Server.MapPath(@"\TmpReport\tmp" + time + "1.xls"));
        Response.Flush();
        Response.Clear();

    }