C#如何表格型數據導出到Excel？

代碼如下：

     　　　　int intDataCount = myData.Tables[0].Rows.Count;


　　　　　　　Microsoft.Office.Interop.Excel.Application app = null;
            Microsoft.Office.Interop.Excel.Workbook workbook = null;
            Microsoft.Office.Interop.Excel.Worksheet sheet = null;

            object missing = System.Reflection.Missing.Value;     //     表示 System.Reflection.Missing 類的唯一實例。
            string strPath = string.Empty;
            string strFileName = string.Empty;
            try
            {
                app = new Microsoft.Office.Interop.Excel.Application();
                app.Visible = false;        // 不顯示，僅后台生成
                workbook = app.Workbooks.Add(true); // 如果打開已存在文件，這里用Open，保存使用Save
                                                    // 添加sheet的方法
                workbook.Worksheets.Add(missing, missing, missing, missing);
                // 修改sheet名的方法，注意sheet的下標從1開始
                sheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];
                sheet.Name = "new sheet name";

                //想要將sheet的名稱改為Sheet1,則需改
                // 添加sheet的方法
                // 注銷 workbook.Worksheets.Add(missing, missing, missing, missing);
                // 中間不變
                //sheet.Name = "Sheet1";

                //添加標題
                app.Cells[1, 1] = strTitle;
                app.Cells[2, 1] = "項目名稱：" + myData.Tables[0].Rows[0][“columnName”].ToString();
                //合並單元格
                sheet.get_Range(sheet.Cells[1, 1], sheet.Cells[1, 6]).MergeCells = true;
                sheet.get_Range(sheet.Cells[2, 1], sheet.Cells[2, 6]).MergeCells = true;
                //居中對齊
                sheet.get_Range(sheet.Cells[1, 1], sheet.Cells[1, 6]).HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
                //設置字體
                sheet.get_Range(sheet.Cells[1, 1], sheet.Cells[1, 6]).Font.Size = 13;
                sheet.get_Range(sheet.Cells[2, 1], sheet.Cells[2, 6]).HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignLeft;
                // 設置字體和大小
                //range = sheet.get_Range(sheet.Cells[1, 1], sheet.Cells[rowCount, columnCount]);
                //range.Font.Name = “Arial”;
                //range.Font.Size = 10;

                // 設置單元格的wrap text屬性  
                sheet.get_Range(sheet.Cells[3, 1], sheet.Cells[intDataCount + 2, 6]).WrapText = true;
                // 設置單元格的數據格式為文本格式
                sheet.get_Range(sheet.Cells[3, 1], sheet.Cells[intDataCount + 2, 6]).NumberFormat = "@";
                //設置自動調整列寬
                sheet.get_Range(sheet.Cells[3, 1], sheet.Cells[intDataCount + 2, 6]).EntireColumn.AutoFit();
　　　　　　　　　 //sheet.Range[sheet.Cells[1, 1], sheet.Cells[intDataCount + 1, 13]].EntireColumn.ColumnWidth = 20;

　　　　　　　　　　sheet.Range[sheet.Cells[1, 1], sheet.Cells[intDataCount + 1, 13]].WrapText = false;
　　　　　　　　　　sheet.Range[sheet.Cells[1, 1], sheet.Cells[intDataCount + 1, 13]].NumberFormat = "@";
　　　　　　　　　　sheet.Range[sheet.Cells[1, 1], sheet.Cells[intDataCount + 1, 13]].EntireRow.AutoFit();
　　　　　　　　　　sheet.Range[sheet.Cells[1, 1], sheet.Cells[intDataCount + 1, 13]].HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;

                Microsoft.Office.Interop.Excel.Range range;
                Array arr = Array.CreateInstance(typeof(object), intDataCount + 2, 6);
                // 不斷的調用下面的的函數填充array中的內容
                // 行,列均從0開始


                arr.SetValue("列名1", 0, 0);
                arr.SetValue("列名2", 0, 1);
                arr.SetValue("列名3", 0, 2);
                arr.SetValue("列名4", 0, 3);
                arr.SetValue("列名5", 0, 4);
                arr.SetValue("列名6", 0, 5);
                int i = 1;
                foreach (DataRow row in myData.Tables[0].Rows)
                {
                    arr.SetValue(row["columnName1"], i, 0);
                    arr.SetValue(row["columnName2"], i, 1);
                    arr.SetValue(row["columnName3"], i, 2);
                    arr.SetValue(row["columnName4"], i, 3);
                    arr.SetValue(row["columnName5"], i, 4);
                    arr.SetValue(row["columnName6"], i, 5);
                    i++;
                }

                // 設置array數據，注意選擇的行數和列數要與array行數和列數對應
                //sheet.get_Range(sheet.Cells[3, 1], sheet.Cells[intDataCount + 2, 6]).Value2 = arr;
　　　　　　　　　sheet.Range[sheet.Cells[1, 1], sheet.Cells[intDataCount + 1, 13]].Value2 = arr;
                // 這里給sheet填充內容部分略
                // 如果文件已經存在又不想讓“是否替換”的提示窗體顯示出來，需要先調用File.Delete來刪除文件
                strFileName = DateTime.Now.ToString("yyyyMMddHHmmss") + ".xlsx";
                strPath = Server.MapPath("~/upload");
                workbook.SaveAs(strPath + "\\" + strFileName, missing, missing, missing, missing, missing,
                Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, missing, missing,
                missing, missing, missing);

　　　　　　　　　　HylExcel.NavigateUrl = string.Format(@"{0}/{1}/{2}", PageBase.UrlBase, PageBase.UploadDir, strFileName);
　　　　　　　　　　HylExcel.Text = string.Format("<span style='color:red;font-weight:bold;'>點這里下載Excel文件{0}</span>", strFileName);

                workbook.Close(false, missing, missing);
                app.Quit();
                workbook = null;
                app = null;
                GC.Collect();

                //FileInfo fi = new FileInfo(strPath + "\\" + strFileName);//excelFile為文件在服務器上的地址 
                //HttpResponse contextResponse = HttpContext.Current.Response;
                //contextResponse.Clear();
               // contextResponse.Buffer = true;
               //contextResponse.Charset = "GB2312"; //設置了類型為中文防止亂碼的出現 
               // contextResponse.AppendHeader("Content-Disposition", String.Format("attachment;filename={0}", fi.Name)); //定義輸出文件和文件名 
                ///contextResponse.AppendHeader("Content-Length", fi.Length.ToString());
               //contextResponse.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
                //contextResponse.ContentType = "application/ms-excel";//設置輸出文件類型為excel文件。 

                //contextResponse.WriteFile(fi.FullName);
               // contextResponse.Flush();
                //fi.Delete();
            }
            catch (Exception ex)
            {
                if (app != null)
                {
                    app.Quit();
                    app = null;
                    GC.Collect();
                }
            }