.NET導出報表一般是采用導出Excel報表的方式輸出內容。而這又分為兩種方式：使用Excel模板方式和使用網頁輸出Excel格式兩種。
首先介紹簡單的一種，網頁輸出Excel內容，這種不需要引用Excel的程序集。
????/**////?<summary>
????///?報表導出輔助類
????///?</summary>
????public?class?ExportToExcel
????{
????????字段信息#region?字段信息

????????private?const?string?C_HTTP_HEADER_CONTENT?=?"Content-Disposition";
????????private?const?string?C_HTTP_ATTACHMENT?=?"attachment;filename=";
????????private?const?string?C_HTTP_CONTENT_TYPE_EXCEL?=?"application/ms-excel";
????????private?string?charSet?=?"utf-8";
????????private?string?fileName?=?"Report";
????????private?string?title?=?"";
????????private?DataTable?sourceTable;

????????/**////?<summary>
????????///?輸出的字符集，默認為gb2312
????????///?</summary>
????????public?string?CharSet
????????{
????????????get?{?return?charSet;?}
????????????set?{?charSet?=?value;?}
????????}

????????/**////?<summary>
????????///?輸出的Excel報表文件名稱
????????///?</summary>
????????public?string?FileName
????????{
????????????get?{?return?fileName;?}
????????????set?{?fileName?=?value;?}
????????}

????????/**////?<summary>
????????///?報表內容的抬頭
????????///?</summary>
????????public?string?Title
????????{
????????????get?{?return?title;?}
????????????set?{?title?=?value;?}
????????}

????????/**////?<summary>
????????///?報表數據的DataTable
????????///?</summary>
????????public?DataTable?SourceTable
????????{
????????????get?{?return?sourceTable;?}
????????????set?{?sourceTable?=?value;?}
????????}

????????#endregion????????

????????public?ExportToExcel()
????????{
????????}

????????/**////?<summary>
????????///?帶參數的構造函數
????????///?</summary>
????????///?<param?name="fileName">導出的Excel文件名</param>
????????///?<param?name="sourceTable">源數據DataTable</param>
????????///?<param?name="title">報表的抬頭</param>
????????public?ExportToExcel(string?fileName,?DataTable?sourceTable,?string?title)
????????{
????????????this.fileName?=?fileName;
????????????this.sourceTable?=?sourceTable;
????????????this.title?=?title;
????????}

????????public?void?ExportReport()
????????{
????????????if?(SourceTable?==?null?||?SourceTable.Rows.Count?==?0)
????????????{
????????????????return;
????????????}

????????????DataGrid?dataGrid?=?new?DataGrid();
????????????dataGrid.DataSource?=?sourceTable;
????????????dataGrid.DataBind();

????????????HttpResponse?Response?=?HttpContext.Current.Response;
????????????Response.Clear();
????????????Response.Buffer?=?true;
????????????Response.AddHeader(C_HTTP_HEADER_CONTENT,?C_HTTP_ATTACHMENT?+?HttpUtility.UrlEncode(fileName?+?".xls"));
????????????Response.ContentType?=?C_HTTP_CONTENT_TYPE_EXCEL;
????????????Response.ContentEncoding?=?Encoding.GetEncoding("gb2312");
????????????Response.Charset?=?charSet;

????????????StringWriter?oStringWriter?=?new?StringWriter();
????????????HtmlTextWriter?oHtmlTextWriter?=?new?HtmlTextWriter(oStringWriter);
????????????dataGrid.RenderControl(oHtmlTextWriter);

????????????string?str?=?oStringWriter.ToString();
????????????int?trPosition?=?str.IndexOf("<tr>",?0);
????????????string?str1?=?str.Substring(0,?trPosition?-?1);
????????????string?str2?=?str.Substring(trPosition,?str.Length?-?trPosition);

????????????string?str3?=?"\r\n\t<tr>";
????????????str3?+=?"\r\n\t\t<td?align=\"center\"?colspan=\""?+?sourceTable.Rows.Count?+
????????????????????"\"?style=\"font-size:14pt;????font-weight:bolder;height:30px;\">"?+?title?+?"</td>";
????????????str3?+=?"\r\n\t</tr>";

????????????Response.Write(str1?+?str3?+?str2);
????????????Response.End();
????????}
????}
使用時候代碼如下：
????????private?void?btnExport2_Click(object?sender,?EventArgs?e)
????????{
????????????DataTable?table?=?SelectAll().Tables[0];
????????????ExportToExcel?export?=?new?ExportToExcel("TestExport",?table,?"TestExport");
????????????export.ExportReport();
????????}

????????public?static?DataSet?SelectAll()
????????{
????????????string?sqlCommand?=?"?Select?ID,?Name,?Age,?Man,?CONVERT(CHAR(10),?Birthday?,120)?as?Birthday?from?Test";

????????????DataSet?ds?=?new?DataSet();
????????????string?connectionString?=?"Server=localhost;Database=Test;uid=sa;pwd=123456";

????????????SqlDataAdapter?adapter?=?new?SqlDataAdapter(sqlCommand,?connectionString);
????????????adapter.Fill(ds);

????????????return?ds;
????????}

另外一種就是先定義好Excel模板，然后輸出指定格式的內容，這些內容通過開始單元格名稱定位，然后寫入內容，但是這種功能比較強大，輸出的Excel內容也比較整齊。
1. 首先在Web.Config中配置下
?<system.web>
?? <identity impersonate="true"></identity>???
?</system.web>
2. 創建一個Excel模板文件，如下圖所示，當然這個是簡單的Excel模板，你可以定義很復雜
?
3. 在網站的根目錄中創建一個Temp目錄，給EveryOne讀寫權限，當然你也可以給AuthenticatedUsers
4. 輔助類代碼
????/**////?<summary>
????///?報表導出基類
????///?</summary>
????public?abstract?class?BaseReport
????{
????????變量及屬性#region?變量及屬性

????????protected?const?string?C_HTTP_HEADER_CONTENT?=?"Content-Disposition";
????????protected?const?string?C_HTTP_ATTACHMENT?=?"attachment;filename=";
????????protected?const?string?C_HTTP_INLINE?=?"inline;filename=";
????????protected?const?string?C_HTTP_CONTENT_TYPE_EXCEL?=?"application/ms-excel";
????????protected?const?string?C_HTTP_CONTENT_LENGTH?=?"Content-Length";
????????protected?const?string?C_ERROR_NO_RESULT?=?"Data?not?found.";

????????protected?string?CharSet?=?"utf-8";
????????protected?string?fileName;
????????protected?string?sheetName;?//表名稱
????????private?ExcelHelper?excelHelper;

????????#endregion

????????public?BaseReport()
????????{
????????????excelHelper?=?new?ExcelHelper(false);
????????}

????????/**////?<summary>
????????///?打開Excel文件和關閉Excel
????????///?</summary>????????
????????///?<returns>返回OK表示成功</returns>
????????protected?virtual?bool?OpenFile()
????????{
????????????return?excelHelper.OpenFile(fileName);
????????}

????????/**////?<summary>
????????///?關閉工作薄和excel文件
????????///?</summary>
????????protected?virtual?void?CloseFile()
????????{
????????????excelHelper.stopExcel();
????????}

????????/**////?<summary>
????????///?導出EXCEL文件
????????///?</summary>
????????protected?virtual?void?ExportFile()
????????{
????????????string?tempFileName?=?HttpContext.Current.Request.PhysicalApplicationPath?+?@"Temp\"?+?sheetName.Replace(".xls",?"");
????????????string?SaveFileName?=?tempFileName?+?DateTime.Now.ToLongDateString()?+
??????????????????????????????????DateTime.Now.ToLongTimeString().Replace(":",?"-")?+?".xls";
????????????excelHelper.SaveAsFile(SaveFileName);
????????????CloseFile();

????????????HttpResponse?Response?=?HttpContext.Current.Response;
????????????Response.Clear();
????????????Response.Buffer?=?true;
????????????Response.AddHeader(C_HTTP_HEADER_CONTENT,
???????????????????????????????C_HTTP_ATTACHMENT?+?HttpUtility.UrlEncode(DateTime.Now.ToLongDateString()?+?sheetName));
????????????Response.ContentType?=?C_HTTP_CONTENT_TYPE_EXCEL;
????????????Response.ContentEncoding?=?Encoding.GetEncoding("gb2312");
????????????Response.Charset?=?CharSet;
????????????Response.WriteFile(SaveFileName);
????????????Response.Flush();
????????????Response.Clear();

????????????File.Delete(SaveFileName);
????????}

????????/**////?<summary>
????????///?填充表單數據到excel中
????????///?</summary>
????????///?<param?name="GotoCell">定義的首個Cell名稱</param>
????????///?<param?name="dt">數據表Datatable</param>
????????protected?virtual?void?FillCell(string?GotoCell,?DataTable?dt)
????????{
????????????int?BeginRow?=?2;
????????????int?RowCount?=?dt.Rows.Count;
????????????Range?rgFill?=?excelHelper.GotoCell(GotoCell);
????????????if?(RowCount?>?BeginRow)
????????????{
????????????????excelHelper.InsertRows(rgFill.Row?+?1,?RowCount?-?BeginRow);?//從定位處的下一行的上面插入新行
????????????}
????????????//Fill
????????????if?(RowCount?>?0)
????????????{
????????????????excelHelper.DataTableToExcelofObj(dt,?excelHelper.IntToLetter(rgFill.Column)?+?rgFill.Row.ToString(),?false);
????????????}
????????}

????????private?void?AppendTitle(string?titleAppendix)
????????{
????????????if?(titleAppendix?!=?null?&&?titleAppendix?!=?string.Empty)
????????????{
????????????????try
????????????????{
????????????????????excelHelper.AppendToExcel(titleAppendix,?"Title");
????????????????}
????????????????catch?(Exception?ex)
????????????????{
????????????????????throw?new?Exception("您沒有指定一個Title的單元格",?ex);
????????????????}
????????????}
????????}

????????/**////?<summary>
????????///?寫入內容
????????///?</summary>
????????public?virtual?void?ExportExcelFile()
????????{
????????????ExportExcelFile(string.Empty);
????????}

????????/**////?<summary>
????????///?寫入內容并追加標題內容
????????///?</summary>
????????///?<param?name="titleAppendix">追加在Title后面的內容（一般如年月份）</param>
????????public?virtual?void?ExportExcelFile(string?titleAppendix)
????????{
????????????try
????????????{
????????????????OpenFile();
????????????????AppendTitle(titleAppendix);
????????????????FillFile();
????????????????ExportFile();
????????????}
????????????catch?//(Exception?ex)
????????????{
????????????????CloseFile();
????????????????throw;
????????????}
????????}


????????protected?virtual?void?FillFile()
????????{
????????}
????}
????/**////?<summary>
????///通用的報表導出類
????///?</summary>
????///?<example>
????///?<code>
????///?DataTable?dt?=?InitTableData();?//InitTableData為自定義獲取數據表的函數
????///????CommonExport?report?=?new?CommonExport(dt,?"架空線.xls",?"Start");?//Start是Excel一個單元格名稱
????///?report.ExportExcelFile();
????///?</code>
????///?</example>
????public?class?CommonExport?:?BaseReport
????{
????????private?DataTable?sourceTable;
????????private?string?startCellName;

????????/**////?<summary>
????????///?構造函數
????????///?</summary>
????????///?<param?name="sourceTable">要導出的DataTable對象</param>
????????///?<param?name="excelFileName">相對于根目錄的文件路徑，如Model/Test.xls</param>
????????///?<param?name="startCellName">開始的單元格名稱</param>
????????public?CommonExport(DataTable?sourceTable,?string?excelFileName,?string?startCellName)
????????{
????????????fileName?=?Path.Combine(HttpContext.Current.Request.PhysicalApplicationPath,?excelFileName);
????????????sheetName?=?Path.GetFileName(fileName);

????????????this.sourceTable?=?sourceTable;
????????????this.startCellName?=?startCellName;
????????}

????????/**////?<summary>
????????///?填寫文件
????????///?</summary>
????????protected?override?void?FillFile()
????????{
????????????FillCell(startCellName,?sourceTable);
????????}
????/**////?<summary>
????///?Excel幫助類
????///?</summary>
????internal?class?ExcelHelper?:?IDisposable
????{
????????一般的屬性變量#region?一般的屬性變量

????????private?Application?excelApp?=?null;
????????private?Windows?excelWindows?=?null;
????????private?Window?excelActiveWindow?=?null;
????????private?Workbooks?excelWorkbooks?=?null;
????????private?Workbook?excelWorkbook?=?null;
????????private?Sheets?excelSheets?=?null;
????????private?Worksheet?excelWorksheet?=?null;

????????private?static?object?m_missing?=?Missing.Value;
????????private?static?object?m_visible?=?true;
????????private?static?object?m_false?=?false;
????????private?static?object?m_true?=?true;
????????private?bool?m_app_visible?=?false;
????????private?object?m_filename;

????????#endregion

????????打開工作薄變量#region?打開工作薄變量

????????private?object?_update_links?=?0;
????????private?object?_read_only?=?m_false;
????????private?object?_format?=?1;
????????private?object?_password?=?m_missing;
????????private?object?_write_res_password?=?m_missing;
????????private?object?_ignore_read_only_recommend?=?m_true;
????????private?object?_origin?=?m_missing;
????????private?object?_delimiter?=?m_missing;
????????private?object?_editable?=?m_false;
????????private?object?_notify?=?m_false;
????????private?object?_converter?=?m_missing;
????????private?object?_add_to_mru?=?m_false;
????????private?object?_local?=?m_false;
????????private?object?_corrupt_load?=?m_false;

????????#endregion

????????關閉工作薄變量#region?關閉工作薄變量

????????private?object?_save_changes?=?m_false;
????????private?object?_route_workbook?=?m_false;

????????#endregion

????????/**////?<summary>
????????///?當前工作薄
????????///?</summary>
????????public?Workbook?CurrentExcelWorkBook
????????{
????????????get?{?return?excelWorkbook;?}
????????????set?{?excelWorkbook?=?value;?}
????????}

????????/**////?<summary>
????????///?釋放對象內存，推出進程
????????///?</summary>
????????///?<param?name="obj"></param>
????????private?void?NAR(object?obj)
????????{
????????????try
????????????{
????????????????Marshal.ReleaseComObject(obj);
????????????}
????????????catch
????????????{
????????????}
????????????finally
????????????{
????????????????obj?=?null;
????????????}
????????}


????????public?ExcelHelper()
????????{
????????????StartExcel();
????????}

????????/**////?<summary>
????????///?確定Excel打開是否可見
????????///?</summary>
????????///?<param?name="visible">true為可見</param>
????????public?ExcelHelper(bool?visible)
????????{
????????????m_app_visible?=?visible;
????????????StartExcel();
????????}

????????/**////?<summary>
????????///?開始Excel應用程序
????????///?</summary>
????????private?void?StartExcel()
????????{
????????????if?(excelApp?==?null)
????????????{
????????????????excelApp?=?new?ApplicationClass();
????????????}

????????????//?Excel是否可見
????????????excelApp.Visible?=?m_app_visible;
????????}

????????public?void?Dispose()
????????{
????????????stopExcel();
????????????GC.SuppressFinalize(this);
????????}

????????
????????打開、保存、關閉Excel文件#region?打開、保存、關閉Excel文件

????????/**////?<summary>
????????///?打開Excel文件和關閉Excel
????????///?</summary>
????????///?<param?name="fileName">文件名</param>
????????///?<returns>返回OK表示成功</returns>
????????public?bool?OpenFile(string?fileName)
????????{
????????????return?OpenFile(fileName,?string.Empty);
????????}


????????/**////?<summary>
????????///?打開Excel文件
????????///?</summary>
????????///?<param?name="fileName">文件名</param>
????????///?<param?name="password">密碼</param>
????????///?<returns>返回OK表示成功</returns>
????????public?bool?OpenFile(string?fileName,?string?password)
????????{
????????????m_filename?=?fileName;

????????????if?(password.Length?>?0)
????????????{
????????????????_password?=?password;
????????????}

????????????try
????????????{
????????????????//?打開工作薄?
????????????????excelWorkbook?=?excelApp.Workbooks.Open(
????????????????????fileName,
????????????????????_update_links,?_read_only,?_format,?_password,?_write_res_password,
????????????????????_ignore_read_only_recommend,?_origin,?_delimiter,?_editable,?_notify,
????????????????????_converter,?_add_to_mru,?_local,?_corrupt_load);

????????????????excelSheets?=?excelWorkbook.Worksheets;
????????????????excelWorksheet?=?(Worksheet)?excelSheets.get_Item(1);
????????????}
????????????catch
????????????{
????????????????CloseFile();
????????????????return?false;
????????????}

????????????return?true;
????????}


????????/**////?<summary>
????????///?關閉工作薄
????????///?</summary>
????????public?void?CloseFile()
????????{
????????????foreach?(Workbook?workbook?in?excelWorkbooks)
????????????{
????????????????workbook.Close(_save_changes,?m_filename,?_route_workbook);
????????????????NAR(workbook);
????????????}
????????}


????????public?void?SaveFile(string?workbook)
????????{
????????????FindExcelWorkbook(workbook);
????????????excelWorkbook.Save();
????????}

????????/**////?<summary>
????????///?保存文件
????????///?</summary>
????????///?<param?name="outputFile">輸出的文件名</param>
????????public?void?SaveAsFile(string?outputFile)
????????{
????????????SaveAsFile(string.Empty,?outputFile);
????????}

????????/**////?<summary>
????????///?保存指定工作薄的文件
????????///?</summary>
????????///?<param?name="workbook">工作薄</param>
????????///?<param?name="outputFile">輸出的文件名</param>
????????public?void?SaveAsFile(string?workbook,?string?outputFile)
????????{
????????????if?(File.Exists(outputFile))
????????????{
????????????????try
????????????????{
????????????????????File.Delete(outputFile);
????????????????}
????????????????catch
????????????????{
????????????????????return;
????????????????}
????????????}

????????????if?(workbook?!=?string.Empty)
????????????{
????????????????FindExcelWorkbook(workbook);
????????????}

????????????excelWorkbook.SaveAs(outputFile,
?????????????????????????????????Type.Missing,?_password,?_write_res_password,?Type.Missing,?Type.Missing,
?????????????????????????????????XlSaveAsAccessMode.xlExclusive,
?????????????????????????????????Type.Missing,?Type.Missing,?Type.Missing,?Type.Missing,?Type.Missing);
????????}

????????/**////?<summary>
????????///?殺掉Excel進程.退出Excel應用程序.
????????///?</summary>
????????public?void?stopExcel()
????????{
????????????excelApp.Quit();
????????????NAR(excelSheets);
????????????NAR(excelWorksheet);
????????????NAR(excelWorkbooks);
????????????NAR(excelWorkbook);
????????????NAR(excelWindows);
????????????NAR(excelActiveWindow);
????????????NAR(excelApp);

????????????GC.Collect();
????????????if?(excelApp?!=?null)
????????????{
????????????????Process[]?pProcess;
????????????????pProcess?=?Process.GetProcessesByName("EXCEL");
????????????????pProcess[0].Kill();
????????????}
????????}

????????#endregion????????

????????windows窗口，workbook工作薄，worksheet工作區操作#region?windows窗口，workbook工作薄，worksheet工作區操作

????????/**////?<summary>
????????///?得到工作薄的工作區集合
????????///?</summary>
????????public?void?GetExcelSheets()
????????{
????????????if?(excelWorkbook?!=?null)
????????????{
????????????????excelSheets?=?excelWorkbook.Worksheets;
????????????}
????????}

????????/**////?<summary>
????????///?找到活動的excel?window
????????///?</summary>
????????///?<param?name="workWindowName">窗口名稱</param>
????????///?<returns></returns>
????????public?bool?FindExcelWindow(string?workWindowName)
????????{
????????????bool?WINDOW_FOUND?=?false;

????????????excelWindows?=?excelApp.Windows;
????????????if?(excelWindows?!=?null)
????????????{
????????????????for?(int?i?=?1;?i?<?excelWindows.Count;?i++)
????????????????{
????????????????????excelActiveWindow?=?excelWindows.get_Item(i);
????????????????????if?(excelActiveWindow.Caption.ToString().Equals(workWindowName))
????????????????????{
????????????????????????excelActiveWindow.Activate();
????????????????????????WINDOW_FOUND?=?true;
????????????????????????break;
????????????????????}
????????????????}
????????????}
????????????
????????????return?WINDOW_FOUND;
????????}

????????/**////?<summary>
????????///?查找工作薄
????????///?</summary>
????????///?<param?name="workbookName">工作薄名</param>
????????///?<returns>true為發現</returns>
????????public?bool?FindExcelWorkbook(string?workbookName)
????????{
????????????bool?WORKBOOK_FOUND?=?false;
????????????excelWorkbooks?=?excelApp.Workbooks;
????????????if?(excelWorkbooks?!=?null)
????????????{
????????????????for?(int?i?=?1;?i?<?excelWorkbooks.Count;?i++)
????????????????{
????????????????????excelWorkbook?=?excelWorkbooks.get_Item(i);
????????????????????if?(excelWorkbook.Name.Equals(workbookName))
????????????????????{
????????????????????????excelWorkbook.Activate();
????????????????????????WORKBOOK_FOUND?=?true;
????????????????????????break;
????????????????????}
????????????????}
????????????}
????????????return?WORKBOOK_FOUND;
????????}

????????/**////?<summary>
????????///?查找工作區
????????///?</summary>
????????///?<param?name="worksheetName"></param>
????????///?<returns>true為發現</returns>
????????public?bool?FindExcelWorksheet(string?worksheetName)
????????{
????????????bool?SHEET_FOUND?=?false;

????????????excelSheets?=?excelWorkbook.Worksheets;

????????????if?(excelSheets?!=?null)
????????????{
????????????????for?(int?i?=?1;?i?<=?excelSheets.Count;?i++)
????????????????{
????????????????????excelWorksheet?=?(Worksheet)?excelSheets.get_Item((object)?i);
????????????????????if?(excelWorksheet.Name.Equals(worksheetName))
????????????????????{
????????????????????????excelWorksheet.Activate();
????????????????????????SHEET_FOUND?=?true;
????????????????????????break;
????????????????????}
????????????????}
????????????}
????????????return?SHEET_FOUND;
????????}

????????#endregion

????????行列操作#region?行列操作

????????/**////?<summary>
????????///?得到工作區的選擇范圍的數組
????????///?</summary>
????????public?string[]?GetRange(string?startCell,?string?endCell)
????????{
????????????Range?workingRangeCells?=?excelWorksheet.get_Range(startCell,?endCell);
????????????workingRangeCells.Select();
????????????Array?array?=?(Array)?workingRangeCells.Cells.Value2;
????????????string[]?arrayS?=?ConvertToStringArray(array);

????????????return?arrayS;
????????}

????????/**////?<summary>
????????///?將二維數組數據寫入Excel文件（不分頁）
????????///?</summary>
????????public?void?ArrayToExcel(string[,]?arr,?string?getCell)
????????{
????????????int?rowCount?=?arr.GetLength(0);?//二維數組行數（一維長度）
????????????int?colCount?=?arr.GetLength(1);?//二維數據列數（二維長度）

????????????Range?range?=?excelWorksheet.get_Range(getCell,?Type.Missing);
????????????range?=?range.get_Resize(rowCount,?colCount);
????????????range.HorizontalAlignment?=?XlHAlign.xlHAlignCenter;
????????????range.VerticalAlignment?=?XlVAlign.xlVAlignCenter;

????????????range.set_Value(Missing.Value,?arr);
????????}

????????public?void?ArrayToExcel(object[,]?arr,?string?getCell)
????????{
????????????int?rowCount?=?arr.GetLength(0);?//二維數組行數（一維長度）
????????????int?colCount?=?arr.GetLength(1);?//二維數據列數（二維長度）

????????????Range?range?=?excelWorksheet.get_Range(getCell,?Type.Missing);
????????????range?=?range.get_Resize(rowCount,?colCount);
????????????range.HorizontalAlignment?=?XlHAlign.xlHAlignCenter;
????????????range.VerticalAlignment?=?XlVAlign.xlVAlignCenter;
????????????range.Value2?=?arr;

????????????//range.set_Value(System.Reflection.Missing.Value,arr);
????????}

????????/**////?<summary>
????????///?合并單元格
????????///?</summary>
????????///?<param?name="startCell">開始Cell</param>
????????///?<param?name="endCell">結束Cell</param>
????????///?<param?name="text">填寫文字</param>
????????public?void?MergeCell(string?startCell,?string?endCell,?string?text)
????????{
????????????MergeCell(string.Empty,?startCell,?endCell,?text);
????????}

????????/**////?<summary>
????????///?合并單元格
????????///?</summary>
????????///?<param?name="workbookName"></param>
????????///?<param?name="startCell"></param>
????????///?<param?name="endCell"></param>
????????///?<param?name="text"></param>
????????public?void?MergeCell(string?workbookName,?string?startCell,?string?endCell,?string?text)
????????{
????????????if?(workbookName?!=?string.Empty)
????????????????FindExcelWorkbook(workbookName);

????????????Range?range?=?excelWorksheet.get_Range(startCell,?endCell);
????????????range.ClearContents();
????????????range.MergeCells?=?true;
????????????range.Value2?=?text;
????????????range.HorizontalAlignment?=?XlHAlign.xlHAlignCenter;
????????????range.VerticalAlignment?=?XlVAlign.xlVAlignCenter;
????????}

????????/**////?<summary>
????????///?添加樣式
????????///?</summary>
????????///?<param?name="styleName">樣式名</param>
????????///?<param?name="fontName">字體名</param>
????????///?<param?name="fontSize">字體大小</param>
????????///?<param?name="fontColor">字體Color(0-255)</param>
????????///?<param?name="interiorColor">Range的填充Color(0-255)</param>
????????public?void?AddStyle(string?styleName,?string?fontName,?int?fontSize,?int?fontColor,?int?interiorColor)
????????{
????????????try
????????????{
????????????????Style?existStyle?=?excelWorkbook.Styles[styleName];
????????????????return;
????????????}
????????????catch
????????????{
????????????}

????????????Style?style?=?excelWorkbook.Styles.Add(styleName,?Type.Missing);
????????????style.Font.Name?=?fontName;
????????????style.Font.Size?=?fontSize;
????????????
????????????if?(fontColor?>=?0?&&?fontColor?<=?255)
????????????{
????????????????style.Font.Color?=?fontColor;
????????????}
????????????if?(fontColor?>=?0?&&?fontColor?<=?255)
????????????{
????????????????style.Interior.Color?=?fontColor;
????????????}
????????????style.Interior.Pattern?=?XlPattern.xlPatternSolid;
????????}

????????/**////?<summary>
????????///?應用樣式
????????///?</summary>
????????///?<param?name="startCell">Range的開始</param>
????????///?<param?name="endCell">Range的結束</param>
????????///?<param?name="styleName">樣式名</param>
????????public?void?ApplyStyle(string?startCell,?string?endCell,?string?styleName)
????????{
????????????Style?style;
????????????try
????????????{
????????????????style?=?excelWorkbook.Styles[styleName];
????????????}
????????????catch
????????????{
????????????????return;
????????????}
????????????
????????????Range?workingRangeCells?=?excelWorksheet.get_Range(startCell,?endCell);
????????????workingRangeCells.Style?=?style;
????????}

????????/**////?<summary>
????????///?插行（在指定行上面插入指定數量行）
????????///?</summary>
????????///?<param?name="rowIndex">行開始Index</param>
????????public?void?InsertRows(int?rowIndex)
????????{
????????????try
????????????{
????????????????Range?range?=?(Range)?excelWorksheet.Rows[rowIndex,?Type.Missing];
????????????????range.Insert(XlDirection.xlDown,?Type.Missing);
????????????}
????????????catch
????????????{
????????????????return;
????????????}
????????}

????????/**////?<summary>
????????///?插行（在指定行上面插入指定數量行）
????????///?</summary>
????????///?<param?name="rowIndex">行開始Index</param>
????????///?<param?name="count">插入的行數?</param>????
????????public?void?InsertRows(int?rowIndex,?int?count)
????????{
????????????try
????????????{
????????????????for?(int?i?=?0;?i?<?count;?i++)
????????????????{
????????????????????Range?range?=?(Range)?excelWorksheet.Rows[rowIndex,?Type.Missing];
????????????????????range.Insert(XlDirection.xlDown,?Type.Missing);
????????????????}
????????????}
????????????catch
????????????{
????????????????return;
????????????}
????????}

????????/**////?<summary>
????????///?插列（在指定列右邊插入指定數量列）
????????///?</summary>
????????///?<param?name="columnIndex">列開始Index</param>
????????public?void?InsertColumns(int?columnIndex)
????????{
????????????try
????????????{
????????????????Range?range?=?(Range)?excelWorksheet.Columns[IntToLetter(columnIndex),?Type.Missing];
????????????????range.Insert(XlDirection.xlToLeft,?Type.Missing);
????????????}
????????????catch
????????????{
????????????????return;
????????????}
????????}

????????/**////?<summary>
????????///?指定Cell格填充
????????///?</summary>
????????///?<param?name="text">填充內容</param>
????????///?<param?name="getCell">Cell位置</param>
????????public?void?InsertToExcel(string?text,?string?getCell)
????????{
????????????Range?range?=?excelWorksheet.get_Range(getCell,?Type.Missing);
????????????range.Value2?=?text;
????????}

????????public?void?InsertToExcel(object?text,?string?getCell)
????????{
????????????Range?range?=?excelWorksheet.get_Range(getCell,?Type.Missing);
????????????range.Value2?=?text;
????????}

????????/**////?<summary>
????????///?往指定Cell格后面追加填充
????????///?</summary>
????????///?<param?name="text">追加填充的內容</param>
????????///?<param?name="getCell">Cell位置</param>
????????public?void?AppendToExcel(string?text,?string?getCell)
????????{
????????????Range?range?=?excelWorksheet.get_Range(getCell,?Type.Missing);
????????????range.Value2?=?range.Value2?+?text;
????????}

????????/**////?<summary>
????????///?刪除行
????????///?</summary>
????????///?<param?name="rowIndex">行Index</param>
????????///?<param?name="count">行數</param>
????????public?void?DeleteRows(int?rowIndex,?int?count)
????????{
????????????try
????????????{
????????????????Range?range?=?(Range)?excelWorksheet.Rows[rowIndex?+?":"?+?(rowIndex?+?count?-?1),?Type.Missing];
????????????????range.Delete(XlDirection.xlUp);
????????????}
????????????catch
????????????{
????????????????return;
????????????}
????????}

????????/**////?<summary>
????????///?刪除列
????????///?</summary>
????????///?<param?name="columnIndex">列Index</param>
????????///?<param?name="count">列數</param>
????????public?void?DeleteColumns(int?columnIndex,?int?count)
????????{
????????????try
????????????{
????????????????string?cells?=?IntToLetter(columnIndex)?+?":"?+?IntToLetter(columnIndex?+?count?-?1);
????????????????Range?range?=?(Range)?excelWorksheet.Columns[cells,?Type.Missing];
????????????????range.Delete(XlDirection.xlDown);
????????????}
????????????catch
????????????{
????????????????return;
????????????}
????????}

????????/**////?<summary>
????????///?將Excel列的整數索引值轉換為字符索引值
????????///?</summary>
????????///?<param?name="n"></param>
????????///?<returns></returns>
????????public?string?IntToLetter(int?n)
????????{
????????????if?(n?>?256)
????????????{
????????????????throw?new?Exception("索引超出范圍，Excel的列索引不能超過256！");
????????????}

????????????int?i?=?Convert.ToInt32(n?/?26);
????????????int?j?=?n?%?26;

????????????char?c1?=?Convert.ToChar(i?+?64);
????????????char?c2?=?Convert.ToChar(j?+?64);

????????????if?(n?>?26)
????????????{
????????????????return?c1.ToString()?+?c2.ToString();
????????????}
????????????else?if?(n?==?26)
????????????{
????????????????return?"Z";
????????????}
????????????else
????????????{
????????????????return?c2.ToString();
????????????}
????????}

????????/**////?<summary>
????????///?將Excel列的字母索引值轉換成整數索引值
????????///?</summary>
????????///?<param?name="letter"></param>
????????///?<returns></returns>
????????public?int?LetterToInt(string?letter)
????????{
????????????if?(letter.Trim().Length?==?0)
????????????{
????????????????throw?new?Exception("不接受空字符串！");
????????????}

????????????int?n?=?0;
????????????if?(letter.Length?>=?2)
????????????{
????????????????char?c1?=?letter.ToCharArray(0,?2)[0];
????????????????char?c2?=?letter.ToCharArray(0,?2)[1];

????????????????if?(!char.IsLetter(c1)?||?!char.IsLetter(c2))
????????????????{
????????????????????throw?new?Exception("格式不正確，必須是字母！");
????????????????}

????????????????c1?=?char.ToUpper(c1);
????????????????c2?=?char.ToUpper(c2);

????????????????int?i?=?Convert.ToInt32(c1)?-?64;
????????????????int?j?=?Convert.ToInt32(c2)?-?64;

????????????????n?=?i*26?+?j;
????????????}

????????????if?(letter.Length?==?1)
????????????{
????????????????char?c1?=?letter.ToCharArray()[0];

????????????????if?(!char.IsLetter(c1))
????????????????{
????????????????????throw?new?Exception("格式不正確，必須是字母！");
????????????????}

????????????????c1?=?char.ToUpper(c1);
????????????????n?=?Convert.ToInt32(c1)?-?64;
????????????}

????????????if?(n?>?256)
????????????{
????????????????throw?new?Exception("索引超出范圍，Excel的列索引不能超過256！");
????????????}

????????????return?n;
????????}

????????/**////?<summary>
????????///?DataTable填充Excel
????????///?</summary>
????????///?<param?name="dt">DataTable表</param>
????????///?<param?name="getCell">Cell位置</param>
????????///?<param?name="showHeader">是否顯示表頭</param>
????????public?void?DataTableToExcel(DataTable?dt,?string?getCell,?bool?showHeader)
????????{
????????????int?rowCount?=?dt.Rows.Count;?//DataTable行數
????????????int?colCount?=?dt.Columns.Count;?//DataTable列數

????????????string[,]?array;
????????????if?(showHeader)
????????????{
????????????????array?=?new?string[rowCount?+?1,colCount];
????????????}
????????????else
????????????{
????????????????array?=?new?string[rowCount,colCount];
????????????}

????????????if?(showHeader)?//添加行字段
????????????{
????????????????for?(int?i?=?0;?i?<?colCount;?i?++)
????????????????{
????????????????????array[0,?i]?=?dt.Columns[i].ColumnName;
????????????????}
????????????}

????????????for?(int?j?=?0;?j?<?rowCount;?j++)
????????????{
????????????????for?(int?k?=?0;?k?<?colCount;?k++)
????????????????{
????????????????????array[j?+?(showHeader???1?:?0),?k]?=?dt.Rows[j][k].ToString();
????????????????}
????????????}
????????????
????????????ArrayToExcel(array,?getCell);
????????}

????????/**////?<summary>
????????///?DataTable填充Excel??以object方式填充
????????///?</summary>
????????///?<param?name="dt">DataTable表</param>
????????///?<param?name="getCell">Cell位置</param>
????????///?<param?name="showHeader">是否顯示表頭</param>
????????public?void?DataTableToExcelofObj(DataTable?dt,?string?getCell,?bool?showHeader)
????????{
????????????int?rowCount?=?dt.Rows.Count;?//DataTable行數
????????????int?colCount?=?dt.Columns.Count;?//DataTable列數

????????????object[,]?array;
????????????if?(showHeader)
????????????{
????????????????array?=?new?object[rowCount?+?1,?colCount];
????????????}
????????????else
????????????{
????????????????array?=?new?object[rowCount,?colCount];
????????????}

????????????if?(showHeader)?//添加行字段
????????????{
????????????????for?(int?i?=?0;?i?<?colCount;?i?++)
????????????????{
????????????????????array[0,?i]?=?dt.Columns[i].ColumnName;
????????????????}
????????????}

????????????for?(int?j?=?0;?j?<?rowCount;?j++)
????????????{
????????????????for?(int?k?=?0;?k?<?colCount;?k++)
????????????????{
????????????????????array[j?+?(showHeader???1?:?0),?k]?=?dt.Rows[j][k];
????????????????}
????????????}
????????????
????????????ArrayToExcel(array,?getCell);
????????}

????????/**////?<summary>
????????///?DataRow填充Excel?以object方式填充
????????///?</summary>
????????///?<param?name="dr">DataRow</param>
????????///?<param?name="getCell">Cell位置</param>
????????///?<param?name="showHeader">是否顯示表頭</param>
????????public?void?DataRowToExcel(DataRow[]?dr,?string?getCell,?bool?showHeader)
????????{
????????????int?rowCount?=?dr.GetLength(0);?//DataRow行數
????????????int?colCount?=?dr[0].Table.Columns.Count;?//DataRow列數

????????????object[,]?array;
????????????if?(showHeader)
????????????{
????????????????array?=?new?object[rowCount?+?1,colCount];
????????????}
????????????else
????????????{
????????????????array?=?new?object[rowCount,colCount];
????????????}

????????????if?(showHeader)?//添加行字段
????????????{
????????????????for?(int?i?=?0;?i?<?colCount;?i?++)
????????????????{
????????????????????array[0,?i]?=?dr[0].Table.Columns[i].ColumnName;
????????????????}
????????????}

????????????for?(int?j?=?0;?j?<?rowCount;?j++)
????????????{
????????????????for?(int?k?=?0;?k?<?colCount;?k++)
????????????????{
????????????????????array[j?+?(showHeader???1?:?0),?k]?=?dr[j][k];
????????????????}
????????????}
????????????
????????????ArrayToExcel(array,?getCell);
????????}

????????private?Range?SelectRange(string?range)
????????{
????????????return?excelWorksheet.get_Range(range,?Type.Missing);
????????}

????????public?void?RangeCopy(string?startCell,?string?endCell,?string?targetCell)
????????{
????????????RangeCopy(string.Empty,?string.Empty,?startCell,?endCell,?string.Empty,?string.Empty,?targetCell);
????????}

????????public?void?RangeCopy(string?worksheetName,?string?startCell,?string?endCell,?string?targetCell)
????????{
????????????RangeCopy(string.Empty,?worksheetName,?startCell,?endCell,?string.Empty,?string.Empty,?targetCell);
????????}

????????public?void?RangeCopy(string?worksheetName,?string?startCell,?string?endCell,?string?targetWorksheetName,
??????????????????????????????string?targetCell)
????????{
????????????RangeCopy(string.Empty,?worksheetName,?startCell,?endCell,?string.Empty,?targetWorksheetName,?targetCell);
????????}

????????public?void?RangeCopy(string?workbookName,?string?worksheetName,?string?startCell,?string?endCell,
??????????????????????????????string?targetWorksheetName,?string?targetCell)
????????{
????????????RangeCopy(workbookName,?worksheetName,?startCell,?endCell,?string.Empty,?targetWorksheetName,?targetCell);
????????}

????????/**////?<summary>
????????///?區域復制粘貼
????????///?</summary>
????????///?<param?name="workbookName">工作薄名</param>
????????///?<param?name="worksheetName">工作區名</param>
????????///?<param?name="startCell">開始Cell</param>
????????///?<param?name="endCell">結束Cell</param>
????????///?<param?name="targetWorkbookName">目標工作薄名</param>
????????///?<param?name="targetWorksheetName">目標工作區名</param>
????????///?<param?name="targetCell">目標Cell</param>
????????public?void?RangeCopy(string?workbookName,?string?worksheetName,?string?startCell,?string?endCell,
??????????????????????????????string?targetWorkbookName,?string?targetWorksheetName,?string?targetCell)
????????{
????????????if?(workbookName?!=?string.Empty?&&?!FindExcelWorkbook(workbookName))
????????????????return;

????????????if?(worksheetName?!=?string.Empty?&&?!FindExcelWorksheet(worksheetName))
????????????????return;

????????????Range?workingRangeCells?=?excelWorksheet.get_Range(startCell,?endCell);
????????????if?(workingRangeCells?==?null)
????????????????return;

????????????if?(targetWorkbookName?!=?string.Empty?&&?!FindExcelWorkbook(targetWorkbookName))
????????????????return;
????????????if?(targetWorksheetName?!=?string.Empty?&&?!FindExcelWorksheet(targetWorksheetName))
????????????????return;

????????????Range?targetRange?=?excelWorksheet.get_Range(targetCell,?Type.Missing);
????????????workingRangeCells.Copy(targetRange);
????????}

????????/**////?<summary>
????????///?轉換Array為字符串數組
????????///?</summary>
????????///?<param?name="values">Array</param>
????????///?<returns>String[]</returns>
????????private?string[]?ConvertToStringArray(Array?values)
????????{
????????????string[]?newArray?=?new?string[values.Length];

????????????int?index?=?0;
????????????for?(int?i?=?values.GetLowerBound(0);?i?<=?values.GetUpperBound(0);?i++)
????????????{
????????????????for?(int?j?=?values.GetLowerBound(1);?j?<=?values.GetUpperBound(1);?j++)
????????????????{
????????????????????if?(values.GetValue(i,?j)?==?null)
????????????????????{
????????????????????????newArray[index]?=?"";
????????????????????}
????????????????????else
????????????????????{
????????????????????????newArray[index]?=?values.GetValue(i,?j).ToString();
????????????????????}
????????????????????index++;
????????????????}
????????????}
????????????return?newArray;
????????}

????????public?Range?GotoCell(string?Key)
????????{
????????????excelApp.Goto(Key,?0);
????????????return?excelApp.ActiveCell;
????????}

????????#endregion????????
????}

終于寫完了，收工

轉載于:https://www.cnblogs.com/wuhuacong/archive/2007/12/03/981520.html

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