使用时如何保留工作表的格式Microsoft.Office.Interop.Excel.Workbook.SaveAs(...)?
例如,我用 Excel 2010 打开以前创建的工作簿,我发现它看起来很漂亮:列标题中的粗体字体、漂亮的网格线、显示输入单元格的良好突出显示颜色等。
我切换到 VS2012 并使用我在下面编写的 ExcelAppManager,首先打开具有漂亮格式的工作簿。然后,我使用 Interop 库以编程方式将新的单元格值写入其中一个工作表。然后我使用 SaveAs() 保存工作表,如下面的 ExcelAppManager 所示。然后我使用 Microsoft Excel 2010 打开工作表:我可以看到我在各个单元格中写入的值 - 这很好,它有效 - 但整个工作簿不再具有格式。这是普通的香草格式,所有漂亮的格式都消失了。
我将格式定义为格式刷可以操作的任何内容:粗体、字体、对齐方式、网格线、缩进、宽度和高度等。
示例代码:
using System;
using System.Reflection;
using System.Runtime.InteropServices;
using Microsoft.Office.Interop.Excel;
namespace ExcelStuff
{
public class ExcelAppManager
{
private Application _excelApp;
private bool _isDefaultWorksheets = true;
private Workbook _workBook;
private Workbooks _workBooks;
private Sheets _workSheets;
public ExcelAppManager(string pathToExistingWorksheet)
{
_excelApp = new Application {DisplayAlerts = false};
_workBooks = _excelApp.Workbooks;
_workBook = _workBooks.Open(pathToExistingWorksheet, Type.Missing, false, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
_workSheets = _workBook.Worksheets;
// NOTE: following lines are nice for debug of existing worksheets (to find the worksheets names)
//Get the reference of second worksheet
// var worksheet = (Microsoft.Office.Interop.Excel.ExcelWorksheet) _workSheets.Item[1];
// string strWorksheetName = worksheet.Name; //Get the name of worksheet.
_isDefaultWorksheets = true;
}
public ExcelAppManager()
{
}
public void Initialize()
{
_excelApp = new Application {DisplayAlerts = false};
_workBooks = _excelApp.Workbooks;
_workBook = _workBooks.Add(Missing.Value);
_workSheets = _workBook.Worksheets;
_isDefaultWorksheets = true;
}
public void KillProcess()
{
_workBook.Close();
_workBooks.Close();
_excelApp.Quit();
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
Marshal.FinalReleaseComObject(_workSheets);
Marshal.FinalReleaseComObject(_workBook);
Marshal.FinalReleaseComObject(_workBooks);
Marshal.FinalReleaseComObject(_excelApp);
}
public void SaveAs(string filepath, string fileExtensionOfExcelFile)
{
_excelApp.DisplayAlerts = false;
if (fileExtensionOfExcelFile == "xlsm")
{
_workBook.SaveAs(filepath, XlFileFormat.xlOpenXMLWorkbookMacroEnabled,
Type.Missing, Type.Missing, true, false, XlSaveAsAccessMode.xlNoChange,
XlSaveConflictResolution.xlLocalSessionChanges, Type.Missing, Type.Missing);
}
else
{
_workBook.SaveAs(filepath, Type.Missing,
Type.Missing, Type.Missing, true, false, XlSaveAsAccessMode.xlNoChange,
XlSaveConflictResolution.xlLocalSessionChanges, Type.Missing, Type.Missing);
}
}
internal Sheets GetSheets()
{
return _workSheets;
}
}
在我的客户端代码中,我使用 ExcelAppManager,如下所示:
var _manager = new ExcelAppManager(_excelFilepath);