公元19XX年前,關於EXCEL的操作就如滔滔江水,連綿不絕,真正操作EXCEL我也是從去年下半年開始的,有些比較複雜的年度報表之類的,做起來也有點費力,不過還是都能畫出來了,關於EXCEL的報表匯出,考慮到匯出耗時的問題我主要採用AJAX來做的,分別捕捉幾個起止狀態,給客戶端提示3個狀態:正在檢索資料。。。---》準備匯出資料。。。(只是從資料庫成功取出,還沒有讀寫excel檔案)--》正在讀寫檔案--》匯出資料成功,當然如果哪一過程出錯,都有對應的提示,只所以想到寫這篇文章,主要是因為今年有個系統的部分EXCEL的操作也讓我做,順便結合之前操作EXCEL的經驗作一下總結,可能也算不上什麼,對於絕大多數來說也沒什麼技術含量,網上一搜一大把,但我想還是有必要總結一下,至少能給園子裡的新手些許幫助,OK,Let's Go...
一. 程式操作EXCEL的應用主要還是在統計報表方面,您可能會考慮讀EXCEL模板,也可能會考慮沒必要讀模板,其實讀不讀模板都能達到一樣的效果,看實際情況而用了。
1. 讀模板的話,首先模板存放在某個路徑下,根據模板把從資料庫裡取出的資料寫回EXCEL然後生成一個新的EXCEL存放都另一個路徑以供下載,模板不變。
我這裡的EXCEL操作主要是在VS2005裡的,VS2003也可以的,不過沒怎麼研究03裡的操作(文章最後我會把05的示例下載地址貼上 那個demo裡之前打包忘了放了一個生成資料的檔案,剛放進去了,不加也是可以執行的,還有模板檔案的資料稍微過濾了下重新放了部分對照看下)vs05中操作EXCEL直接引用.NET自帶的COM元件,新增後專案的bin目錄下會自動出現
Interop.Excel.dll這個DLL(需安裝office2003 excel,下面的說明及示例都是基於office2003的,版本不同呼叫可能會不一樣)
頁面的名稱空間引用 using Excel;
下面是呼叫模板的一段程式碼
2 case "ReportByTemp":
3 {
4
5 DataView dv = Cache["ReportByTemp"] as DataView;
6 //建立一個Excel.Application的新程式
7 Excel.Application app = new Excel.Application();
8 if (app == null)
9 {
10 return;
11 }
12 app.Visible = false;
13 app.UserControl = true;
14 Workbooks workbooks = app.Workbooks;
15 _Workbook workbook = workbooks.Add(template_path + "\\EXCEL測試模板.xls");//這裡的Add方法裡的引數就是模板的路徑
16 Sheets sheets = workbook.Worksheets;
17 _Worksheet worksheet = (_Worksheet)sheets.get_Item(1);//模板只有一個sheet表
18 if (worksheet == null)
19 {
20 return;
21 }
22
23 int rowNum = 0;
24 for (int i = 0; i < dv.Count; i++)
25 {
26 rowNum = i + 1;
27 worksheet.Cells[3 + i, 1] = rowNum;
28 worksheet.Cells[3 + i, 2] = dv[i].Row[0].ToString();
29 worksheet.Cells[3 + i, 3] = dv[i].Row[1].ToString();
30
31 excelOperate.SetBold(worksheet, worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 1]); //黑體
32 excelOperate.SetHAlignCenter(worksheet, worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 3]);//居中
33 worksheet.get_Range(worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 3]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black);
34
35 }
36
37 tick = DateTime.Now.Ticks.ToString();
38 save_path = temp_path + "\\" + tick + ".xls";
39 workbook.SaveAs(save_path, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
40 excelOperate.Dispose(worksheet, workbook, app);//關閉Excel程式
41
42 }
43 break;
44 #endregion
效果如下:
2. 不讀模板的話,呼叫的時候其實會繼承一個空白模板,然後寫入資料,程式畫表頭,最終達到一樣的效果,程式如下:
2 case "ReportByNone":
3 {
4
5 DataView dv = Cache["ReportByNone"] as DataView;
6 //建立一個Excel.Application的新程式
7 Excel.Application app = new Excel.Application();
8 if (app == null)
9 {
10 return;
11 }
12 app.Visible = false;
13 app.UserControl = true;
14 Workbooks workbooks = app.Workbooks;
15 _Workbook workbook = workbooks.Add(XlWBATemplate.xlWBATWorksheet);//這裡的Add方法裡的引數就相當於繼承了一個空模板(暫這樣理解吧)
16 Sheets sheets = workbook.Worksheets;
17 _Worksheet worksheet = (_Worksheet)sheets.get_Item(1);
18 if (worksheet == null)
19 {
20 return;
21 }
22
23 worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, 3]).Merge(Missing.Value); //橫向合併
24 worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, 1]).Value2 = "匯出EXCEL測試一";
25 excelOperate.SetBold(worksheet, worksheet.Cells[1, 1], worksheet.Cells[1, 1]); //黑體
26 excelOperate.SetHAlignCenter(worksheet, worksheet.Cells[1, 1], worksheet.Cells[1, 1]);//居中
27 excelOperate.SetBgColor(worksheet, worksheet.Cells[1, 1], worksheet.Cells[1, 1], System.Drawing.Color.Red);//背景色
28 excelOperate.SetFontSize(worksheet, worksheet.Cells[1, 1], worksheet.Cells[1, 1], 16);//字型大小
29 excelOperate.SetRowHeight(worksheet, worksheet.Cells[1, 1], worksheet.Cells[1, 1], 32.25);//行高
30 worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, 1]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black);//黑色連續邊框
31
32 worksheet.Cells[2, 1] = "序號";
33 worksheet.Cells[2, 2] = "公司";
34 worksheet.Cells[2, 3] = "部門";
35 excelOperate.SetBold(worksheet, worksheet.Cells[2, 1], worksheet.Cells[2, 3]); //黑體
36 worksheet.get_Range(worksheet.Cells[2, 1], worksheet.Cells[2, 3]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black);
37 excelOperate.SetHAlignRight(worksheet, worksheet.Cells[2, 1], worksheet.Cells[2, 3]);
38 excelOperate.SetBgColor(worksheet, worksheet.Cells[2, 1], worksheet.Cells[2, 3], System.Drawing.Color.Silver);//背景色
39 int rowNum = 0;
40 for (int i = 0; i < dv.Count; i++)
41 {
42 rowNum = i + 1;
43 worksheet.Cells[3 + i, 1] = rowNum;
44 worksheet.Cells[3 + i, 2] = dv[i].Row[0].ToString();
45 worksheet.Cells[3 + i, 3] = dv[i].Row[1].ToString();
46
47 excelOperate.SetBold(worksheet, worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 1]); //黑體
48 excelOperate.SetHAlignCenter(worksheet, worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 3]);//居中
49 worksheet.get_Range(worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 3]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black);//設定邊框顏色,不然列印預覽,會非常不雅觀
50
51 }
52 excelOperate.SetColumnWidth(worksheet, "A", 10);
53 excelOperate.SetColumnWidth(worksheet, "B", 20);
54 excelOperate.SetColumnWidth(worksheet, "C", 20);
55 worksheet.Name = "匯出EXCEL測試一";
56
57 tick = DateTime.Now.Ticks.ToString();
58 save_path = temp_path + "\\"+ tick + ".xls";
59 workbook.SaveAs(save_path, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
60 excelOperate.Dispose(worksheet, workbook, app);//關閉Excel程式
61
62 }
63 break;
64
65 #endregion
效果如下:
以上我給了兩個最簡單的操作說明,下面詳細說一下對於一些稍微複雜的報表的生成處理
二. 對於複雜的EXCEL報表的生成處理,無非是縱向合併相同的資料行及巢狀縱向合併等一些操作,下面就幾個具有針對性的報表作下說明.
1.要生成相對複雜的EXCEL表,在從資料庫取資料時,要注意先按照合理的要求排好序,有時候可能order by後面要跟好幾個欄位,而且這幾個欄位誰先誰後也要注意,因為這些會直接影響報表呈現的效果,比如你的EXCEL表要按月份統計國內外的專案,顯示出來的時候要多個專案相同的人連續,那麼排序就可能要這樣order by 月份,專案類別,使用者ID,專案ID(這是寫好的檢視,基於檢視來檢索的),這個排序的欄位順序就不能變了,變了的話就不太好生成想要的形式了,如下圖:
這個也是動態畫的,用了個簡單的模板,模板就一個表頭,沒多大意義,除非表頭很複雜而且在列表中不需要重畫,考慮模板就比較好,向上面那個一月份國際的和其它月份的都是需要重畫表頭的。至於合併,如果不是巢狀的合併,我們可以在向模板迴圈寫資料的時候直接控制,比如下面一個簡單的寫法:
2 {
3 bidName = table.Rows[index]["BIDNAME"].ToString();
4 if (table.Rows[i]["BIDNAME"].ToString() == bidName)
5 {
6 projNum++;
7 worksheet.Cells[5 + i, 2] = table.Rows[i]["PROJNO"];
8 worksheet.Cells[5 + i, 3] = table.Rows[i]["PROJNAME"];
9 worksheet.Cells[5 + i, 4] = table.Rows[i]["STAT_DATE"];
10 worksheet.Cells[5 + i, 5] = table.Rows[i]["PROJTYPE"];
11 worksheet.Cells[5 + i, 6] = table.Rows[i]["CONTENT"];
12 worksheet.Cells[5 + i, 7] = table.Rows[i]["OPENDT"];
13 worksheet.Cells[5 + i, 8] = table.Rows[i]["OPENADDRESS"];
14 worksheet.Cells[5 + i, 9] = table.Rows[i]["REV_DATE"];
15 worksheet.Cells[5 + i, 10] = table.Rows[i]["BID_UNIT"];
16 worksheet.Cells[5 + i, 11] = table.Rows[i]["AGT_AMOUNT"];
17 worksheet.Cells[5 + i, 12] = table.Rows[i]["CURRENCY"] + ":" + table.Rows[i]["BIDSER_AMOUNT"];
18 worksheet.Cells[5 + i, 13] = table.Rows[i]["SENDDATE"];
19 worksheet.Cells[5 + i, 14] = table.Rows[i]["CURRENCY"] + ":" + table.Rows[i]["BIDPRICE"];
20 worksheet.Cells[5 + i, 15] = table.Rows[i]["BOOKAMOUNT"];
21 worksheet.Cells[5 + i, 16] = table.Rows[i]["CURRENCY"] + ":" + table.Rows[i]["BAIL_AMOUNT"];
22 worksheet.Cells[5 + i, 17] = table.Rows[i]["USERNAME"];
23 worksheet.Cells[5 + i, 18] = table.Rows[i]["SECOND_USER"];
24 worksheet.Cells[5 + i, 19] = "";
25 worksheet.get_Range(worksheet.Cells[5 + i, 1], worksheet.Cells[5 + i, 19]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black);
26 continue;
27 }
28
29 worksheet.get_Range(worksheet.Cells[5 + rowid, 1], worksheet.Cells[5 + i - 1, 1]).Merge(Missing.Value); //將第一列按投標單位合併
30 worksheet.get_Range(worksheet.Cells[5 + rowid, 1], worksheet.Cells[5 + rowid, 1]).Value2 = bidName + "(" + projNum.ToString() + "個專案)";//合併後的單元格內容
合併單元格的時候也要注意一個問題,就是合併的單元格必須是為空的,不然在執行合併時,會提示“合併後的單元格的值將丟失”,具體不這樣提示的,大致是這個意思,一般我們合併都單元格相同的內容,在合併前我們先儲存那個值,再清空後合併,上面的程式碼中把worksheet.Cell[5+rowid,1]這裡系列的單元格的值空出來了,沒寫資料,而且最後合併了再寫值,避免了去迴圈清空。
2.巢狀的合併向上面那樣做可能控制比較麻煩,而且思路可能很混亂,我們可以考慮先迴圈填充所有的資料,在迴圈出來要合併的列,比如像下面的這張表
先迴圈填充資料,如下:
2 string ProjNo = "";
3 for (i = 0; i < table.Rows.Count; i++)
4 {
5 ProjNo = table.Rows[index]["PROJNO"].ToString();
6 if (table.Rows[i]["PROJNO"].ToString() == ProjNo)
7 {
8 wksheet.Cells[3 + i, 1] = rownum + 1;
9 wksheet.Cells[3 + i, 2] = "'" + table.Rows[i]["PROJNO"]; //加上單引號保證以0開頭的字元原樣輸出
10 wksheet.Cells[3 + i, 3] = "'" + table.Rows[i]["PROJNAME"];
11 wksheet.Cells[3 + i, 4] = "'" + table.Rows[i]["PA_NAME"];
12 wksheet.Cells[3 + i, 5] = "'" + table.Rows[i]["BIDER_NAME"];
13 wksheet.Cells[3 + i, 6] = table.Rows[i]["BAIL_AMOUNT"];
14 wksheet.Cells[3 + i, 7] = table.Rows[i]["NOT_BACK"];
15 wksheet.get_Range(wksheet.Cells[3 + i, 1], wksheet.Cells[3 + i, 7]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black);
16 continue;
17 }
18
19 index = i;
20 rownum++;
21 i--;
22
23 }
下面合併前三列相同內容的單元:
2 int m = 1, rowid = 3, k;
3 string projName = "";
4 for (k = 3; k <= i + 2; k++)
5 {
6 if (Convert.ToInt32(wksheet.get_Range(wksheet.Cells[k, 1], wksheet.Cells[k, 1]).Value2) == m)
7 {
8 ProjNo = wksheet.get_Range(wksheet.Cells[k, 2], wksheet.Cells[k, 2]).Value2.ToString();
9 projName = wksheet.get_Range(wksheet.Cells[k, 3], wksheet.Cells[k, 3]).Value2.ToString();
10 wksheet.get_Range(wksheet.Cells[k, 1], wksheet.Cells[k, 1]).Value2 = "";
11 wksheet.get_Range(wksheet.Cells[k, 2], wksheet.Cells[k, 2]).Value2 = "";
12 wksheet.get_Range(wksheet.Cells[k, 3], wksheet.Cells[k, 3]).Value2 = "";
13 continue;
14 }
15 wksheet.get_Range(wksheet.Cells[rowid, 1], wksheet.Cells[k - 1, 1]).Merge(Missing.Value);
16 wksheet.get_Range(wksheet.Cells[rowid, 1], wksheet.Cells[rowid, 1]).Value2 = m;
17
18 wksheet.get_Range(wksheet.Cells[rowid, 2], wksheet.Cells[k - 1, 2]).Merge(Missing.Value);
19 wksheet.get_Range(wksheet.Cells[rowid, 2], wksheet.Cells[rowid, 2]).Value2 = "'" + ProjNo;
20
21 wksheet.get_Range(wksheet.Cells[rowid, 3], wksheet.Cells[k - 1, 3]).Merge(Missing.Value);
22 wksheet.get_Range(wksheet.Cells[rowid, 3], wksheet.Cells[rowid, 3]).Value2 = "'" + projName;
23
24 m++;
25 rowid = k;
26 k--;
27 }
28 //跳出迴圈後合併最後一個招標專案
29
30 wksheet.get_Range(wksheet.Cells[rowid, 1], wksheet.Cells[k - 1, 1]).Merge(Missing.Value);
31 wksheet.get_Range(wksheet.Cells[rowid, 1], wksheet.Cells[rowid, 1]).Value2 = m;
32
33 wksheet.get_Range(wksheet.Cells[rowid, 2], wksheet.Cells[k - 1, 2]).Merge(Missing.Value);
34 wksheet.get_Range(wksheet.Cells[rowid, 2], wksheet.Cells[rowid, 2]).Value2 = "'" + ProjNo;
35
36 wksheet.get_Range(wksheet.Cells[rowid, 3], wksheet.Cells[k - 1, 3]).Merge(Missing.Value);
37 wksheet.get_Range(wksheet.Cells[rowid, 3], wksheet.Cells[rowid, 3]).Value2 = "'" + projName;
下面合併標段列
2
3 index = 0; rowid = 3; //重置變數
4 string pa_name = string.Empty; //標段名稱
5 for (k = 3; k <= i + 2; k++)
6 {
7 pa_name = table.Rows[index]["PA_NAME"].ToString();
8 if (wksheet.get_Range(wksheet.Cells[k, 4], wksheet.Cells[k, 4]).Value2.ToString() == pa_name)
9 {
10 wksheet.get_Range(wksheet.Cells[k, 4], wksheet.Cells[k, 4]).Value2 = "";
11 continue;
12 }
13 wksheet.get_Range(wksheet.Cells[rowid, 4], wksheet.Cells[k - 1, 4]).Merge(Missing.Value);
14 wksheet.get_Range(wksheet.Cells[rowid, 4], wksheet.Cells[rowid, 4]).Value2 = "'" + pa_name;
15 index = k - 3;
16 rowid = k;
17 k--;
18
19 }
20 //退出迴圈時合併最後一個專案的標段
21 wksheet.get_Range(wksheet.Cells[rowid, 4], wksheet.Cells[k - 1, 4]).Merge(Missing.Value);
22 wksheet.get_Range(wksheet.Cells[rowid, 4], wksheet.Cells[rowid, 4]).Value2 = "'" + pa_name;
23 tick = DateTime.Now.ToString("yyyyMMddhhmmss");
24 save_path = temp_path + "\\" + tick + "保證金收退情況表.xls";
25 Session["BailBackID"] = tick + "保證金收退情況表.xls";
26 Session["_BailBack"] = "true";
27 workbook.SaveAs(save_path, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
28 excelOperate.Dispose(worksheet, workbook, app);//關閉Excel程式
29 //DownLoad(save_path);
30 //Page_Close();
當然,上面的操作中會進行好幾次迴圈,在效能方面不太可取,園子裡的兄弟也許會有更好的方法,小弟不吝賜教了
下面我們看下幾個效果圖:
(注意:這裡提示的匯出資料是指從資料庫成功取出資料,還沒有操作EXCEL物件,剛開始已經說過了,當然這個提示文字換成其它的也可以)
整個過程採用AJAX提示的,一來不重新整理,二來匯出時間比較長的話,可以給客戶一個良好的體驗效果,否可,使用者一點匯出按鈕,半天沒反應也沒提示,客戶就覺得怎麼這麼慢的,是不是你們程式有問題,指責一大堆,有了這麼些互動提示資訊,讓客戶多等幾分鐘也能承受。
3.生成的表格包含多個sheet的操作,比如下面一種情況
繪製這張表的要求是根據選擇某年的幾月到幾月,生成這個幾個月的一個綜合情況的sheet,然後分別生成這幾個月的單獨的sheet表,生成上面表的模板,包含兩個sheet ,一個綜合月份的sheet和一個單獨月份的sheet,因為單獨月份的sheet表現形式都是一樣的,我們可以根據選擇的月份個數Copy幾個sheet就可以了
2
3 _Workbook workbook = workbooks.Add(template_path + "\\招標單位年度招標情況逐月統計表.xls");
4 Sheets sheets = workbook.Worksheets;
5 _Worksheet Yearsheet = (_Worksheet)sheets.get_Item(1);
6 _Worksheet worksheet = (_Worksheet)sheets.get_Item(2);
7 if (worksheet == null)
8 {
9 return;
10 }
11 for (int i = 1; i < monthCount; i++)
12 worksheet.Copy(Missing.Value, workbook.Worksheets[2]);//月統計工作薄
Yearsheet的操作就不說了,和前面幾個一樣操作,關鍵是月份的sheet的生成,其實就是迴圈操作get_Item(i),程式碼如下
2
3 int item_id = 2;
4 rowNum = 0; book_Amount = 0; index = 0;
5 bid_Amount = ""; bidser_Amount = ""; agent_Amount = 0;//清空變數
6 _Worksheet ws = null;
7 for (int i = 0; i < tableMM.Rows.Count; i++)
8 {
9 rowNum++;
10 Month = tableMM.Rows[index]["DATE_MONTH"].ToString();
11 if (tableMM.Rows[i]["DATE_MONTH"].ToString() == Month)
12 {
13 ws = (_Worksheet)sheets.get_Item(item_id);
14 ws.Cells[3 + rowNum - 1, 1] = rowNum;
15 ws.Cells[3 + rowNum - 1, 2] = tableMM.Rows[i]["PROJNO"];
16 ws.Cells[3 + rowNum - 1, 3] = tableMM.Rows[i]["PROJNAME"];
17 ws.Cells[3 + rowNum - 1, 4] = tableMM.Rows[i]["BID_TYPE"];
18 ws.Cells[3 + rowNum - 1, 5] = tableMM.Rows[i]["BID_MODE"];
19 ws.Cells[3 + rowNum - 1, 6] = tableMM.Rows[i]["OPENDT"];
20 ws.Cells[3 + rowNum - 1, 7] = tableMM.Rows[i]["OPENADDRESS"];
21 ws.Cells[3 + rowNum - 1, 8] = tableMM.Rows[i]["BID_UNIT"];
22 ws.Cells[3 + rowNum - 1, 9] = tableMM.Rows[i]["NOTICE_NO"].ToString().Replace("神華國貿", "");
23 ws.Cells[3 + rowNum - 1, 10] = tableMM.Rows[i]["BOOKAMOUNT"];
24 ws.Cells[3 + rowNum - 1, 11] = tableMM.Rows[i]["BIDPRICE"] + "(萬" + tableMM.Rows[i]["CURRENCY"] + ")";
25 ws.Cells[3 + rowNum - 1, 12] = tableMM.Rows[i]["BIDSER_AMOUNT"] + "(萬" + tableMM.Rows[i]["CURRENCY"]+")";
26 ws.Cells[3 + rowNum - 1, 13] = tableMM.Rows[i]["AGT_AMOUNT"];
27 ws.Cells[3 + rowNum - 1, 14] = "";
28 ws.get_Range(ws.Cells[3 + rowNum - 1, 1], ws.Cells[3 + rowNum - 1, 14]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black);
29 continue;
30 }
31
32 ws.Cells[1, 1] = year + "年" + bidName + GetMonth(Month) + "月份招標專案情況一覽表";
33
34 //每月合計
35 sql = " SELECT CURRENCY, NVL(SUM(BIDPRICE),0) AS BIDPRICE,NVL(SUM(BOOKAMOUNT),0) AS BOOKAMOUNT,NVL(SUM(BIDSER_AMOUNT),0) AS BIDSER_AMOUNT,NVL(SUM(AGT_AMOUNT),0) AS AGT_AMOUNT FROM IBS_V_BID_MONTHLY_STAT" + SqlFilter +
36 " AND DATE_YEAR ='" + year + "' AND COMPANY_ID=" + biderID + " AND DATE_MONTH ='" + Month + "'" +
37 " GROUP BY CURRENCY";
38 System.Data.DataTable dt1 = OracleHelper.RetDataTable(sql);
39 for (int m = 0; m < dt1.Rows.Count; m++)
40 {
41 bid_Amount += dt1.Rows[m]["BIDPRICE"] + "(萬"+dt1.Rows[m]["CURRENCY"] + ")\r\t";
42 book_Amount += float.Parse(dt1.Rows[m]["BOOKAMOUNT"].ToString());
43 bidser_Amount += dt1.Rows[m]["BIDSER_AMOUNT"] + "(萬" + dt1.Rows[m]["CURRENCY"] + ")\r\t";
44 agent_Amount += float.Parse(dt1.Rows[m]["AGT_AMOUNT"].ToString());
45 }
46
47 ws.Cells[3 + rowNum - 1, 3] = "合 計";
48 ws.Cells[3 + rowNum - 1, 10] = book_Amount;
49 ws.Cells[3 + rowNum - 1, 11] = bid_Amount;
50 ws.Cells[3 + rowNum - 1, 12] = bidser_Amount;
51 ws.Cells[3 + rowNum - 1, 13] = agent_Amount;
52 ws.get_Range(ws.Cells[3 + rowNum - 1, 1], ws.Cells[3 + rowNum - 1, 14]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black);
53 ws.Name = GetMM(Month);
54
55 item_id++;
56 index = i; //彙總下一個月份的招標專案
57 i--;
58 rowNum = 0; book_Amount = 0;
59 bid_Amount = ""; bidser_Amount = ""; agent_Amount = 0;//清空變數
60 }
61
62 //跳出迴圈時進行最後一個月份的專案彙總
用的是oracle資料庫,所以上面那個sql語句。。。 呵呵
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上面大致說得就差不多了,因為是不斷迴圈的什麼的,可能對於大的資料量讀寫來說,比較好效能,如果大家有什麼更好的方法,可以指點下,為了彌補等待時間過長,所以才結合了AJAX來處理。
最後我把做的一個小demo的連結帖出來給大家,還有一些空模板和對應生成的資料表給大家對照看下,尤其相對複雜一些的表畫應該是能畫出來的,主要看大家採用什麼樣的方法,能少迴圈一次就儘量少迴圈,呵呵~~~
EXCEL模板讀寫說明
http://www.justlike.com.cn/upfiles/template_xls.rar
http://www.justlike.com.cn/upfiles/ExcelFiles.rar
http://www.justlike.com.cn/upfiles/ExcelReportDemo.rar
(說明:最後彈出下載檔案的一個頁面一直想讓其自動關掉,但是不行,如果不關掉,再點匯出,不會彈出下載框,實際的處理中我們可以在匯出旁邊放個下載按鈕,就像上面的效果圖裡那樣,當然可以點匯出的時候讓其在網頁中直接開啟,點下載的時候再彈出下載框,但是直接開啟的話,檔案需要生成在虛擬目錄下,不太安全,呵呵~~,看實際情況處理了)
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今天補充說明下,關於那個呼叫ajax回撥的效果,有個地方用到了所謂的“ajax巢狀呼叫”,如下
2 {
3 if(resp.value == "OK")
4 {
5
6 $('tipMsg').innerHTML = "<img border=\"0\" src=\"images/s_progressbar.gif\"><font color=#FF0000 style=font-weight:bold>準備匯出資料,請稍等</font>";
7 setTimeout("RedirectUrl()",1000);//延時體驗
8 }
9 else
10 if(resp.value == "NO")
11 {
12 $('tipMsg').innerHTML = "<font color=#FF0000 style=font-weight:bold>沒有找到符合該查詢條件的資料</font>";
13 $('btnExcel').disabled = false;
14 }
15 else
16 {
17 $('tipMsg').innerHTML = "<font color=#FF0000 style=font-weight:bold>警告:匯出資料出錯</font>";
18 $('btnExcel').disabled = false;
19 }
20
21
22 }
2 {
3 $('tipMsg').innerHTML = "<img border=\"0\" src=\"images/ajaxloading.gif\"><font color=#7fffd4 style=font-weight:bold>正在讀寫報表檔案,請稍後</font>";
4 var ajax = new ajax_request("ExcelReport.aspx?flag=ReportByTemp&"+Math.random(), "", "", ReportCallback);
5 function ReportCallback(resp)
6 {
7 if(resp.value != "Error" && resp.value !="")
8 {
9 $('btnExcel').disabled = false;
10 $('tipMsg').innerHTML = "<font color=#FF0000 style=font-weight:bold>資料匯出成功!</font>";
11 Open("XLS_DownLoad.aspx?path="+resp.value);//window.location.href = resp.value;//
12 }
13 else
14 {
15 $('btnExcel').disabled = false;
16 $('tipMsg').innerHTML = "<font color=#FF0000 style=font-weight:bold>檔案讀寫出錯,請檢查檔案模板是否存在或對檔案是否有讀寫許可權!</font>";
17 }
18 }
19
20 }
21
22 function Open(url)
23 {
24 window.open(url,'newwindow','height=1,width=1,top=1500,left=1500,toolbar=no,menubar=no,scrollbars=yes,location=no,status=no')
25 }
ExcelReportCallback(resp)原本是一個回撥函式,但是裡面呼叫了一個RedirectUrl()方法,這個方法又包含了一個回撥函式,這樣就形成了回撥的巢狀,之所以這麼做,是因為,第一個回撥是處理從資料庫取出資料成功與否,如果成功了跳轉到畫EXCEL的頁面,這樣的話會出現一個空白頁等生成好後出現下載框,後來覺得是否可以巢狀一個回撥來繼續一次非同步操作,這樣就不會出現長時間等待的空白頁面了,而是生成好EXCEL後返回地址,或者可以返回一個檔名到XLS_DownLoad.aspx頁面直接下載,但是XLS_DownLoad.aspx也是要出現的,我嘗試過讓下載後這個頁面自動關閉,無賴做不到,所以把Open()方法裡的資料值調得讓頁面不顯示,但是狀態列還是有顯示的。