Excel.Workbook.SaveAs（…）具有相同的名称文件

我正在使用xls文件。 我怎样才能保存它（如果存在）相同的文件名+“（副本1）”像Windows桌面。

方法saveCommande（…）

if(!Directory.Exists(System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "EcoEtech_Commande_Fournisseur")) { Directory.CreateDirectory(System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\EcoEtech_Commande_Fournisseur"); } xlWorkBook.SaveAs("EcoEtech_Commande_Fournisseur\\" + path, Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, true, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue); path = System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\EcoEtech_Commande_Fournisseur\\" + path; xlWorkBook.Close(true, misValue, misValue); xlApp.Quit(); this.ReleaseComObject(xlApp,xlWorkBook); //sauvergarde dans la base de données _newAchatCommande.path = path; this._fileName = path; contexte.AddToAchatCommande(_newAchatCommande); contexte.SaveChanges(); 

谢谢

Answer 1

尝试使用File对象的Exists方法：

  if (!System.IO.File.Exists(@"C:\test2.xls")) { xlWorkBook.SaveAs(@"c:\test2.xls"); } else { xlWorkBook.SaveAs(@"c:\test2(Copy).xls"); } 

或者，您也可以通过覆盖您的Excel文件

  Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application(); excel.DisplayAlerts = false; excelSheePrint.SaveAs(filename, Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookDefault, Type.Missing, Type.Missing, true, false, XlSaveAsAccessMode.xlNoChange, XlSaveConflictResolution.xlLocalSessionChanges, Type.Missing, Type.Missing); 

注意：它会覆盖现有的Excel（如果存在）而不询问用户。

Answer 2

  DataTable dt= dtData; using (XLWorkbook wb = new XLWorkbook()) { //Range(int firstCellRow,int firstCellColumn,int lastCellRow,int lastCellColumn) int CCount = dt.Columns.Count; int RCount = dt.Rows.Count; var ws = wb.Worksheets.Add("Report"); //add worksheet to workbook ws.Row(1).Cell(1).RichText.AddText(ReportName); ws.Range(1, 1, 1, CCount).Merge(); ws.Range(1, 1, 1, CCount).Style.Font.Bold = true;//Range(int firstCellRow,int firstCellColumn,int lastCellRow,int lastCellColumn) ws.Range(1, 1, 1, CCount).Style.Font.FontSize = 16; ws.Range(1, 1, 1, CCount).Style.Alignment.Horizontal = XLAlignmentHorizontalValues.Center; ws.Range(1, 1, 1, CCount).Style.Alignment.Vertical = XLAlignmentVerticalValues.Center; //ws.Range("A1:Z1").Style.Font.Bold = true; ws.Row(2).Cell(1).InsertTable(dt); ws.Range("A2:Z2").Style.Font.Bold = true; ws.Range(2, 1, RCount + 2, CCount).Style.Border.OutsideBorder = XLBorderStyleValues.Medium; wb.SaveAs(FolderPath + filename + ".xlsx"); ws.Dispose(); } 

Answer 3

有用！ 谢谢

  private void SaveNewCommande(YetiBddEntities contexte, Excel.Application xlApp, Excel.Workbook xlWorkBook, string path, object misValue) { string tmpPath = System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\EET_Commande_Fournisseur"; if (!Directory.Exists(tmpPath)) { Directory.CreateDirectory(tmpPath); } foreach (string file in Directory.GetFiles(tmpPath)) { if ((path+".xls").Equals(file.Substring(tmpPath.Length+1))) count++; } if (count>0) xlWorkBook.SaveAs(string.Format("EET_Commande_Fournisseur\\{0}_({1}).xls", path, count), Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue); else xlWorkBook.SaveAs(string.Format("EET_Commande_Fournisseur\\{0}.xls", path) + path, Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue); path = System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\EET_Commande_Fournisseur\\" + path+".xls"; xlWorkBook.Close(true, misValue, misValue); xlApp.Quit(); this.ReleaseComObject(xlApp,xlWorkBook); //sauvergarde dans la base de données _newAchatCommande.path = path; this._fileName = path; contexte.AddToAchatCommande(_newAchatCommande); contexte.SaveChanges(); }