Convert Excel to Textdocument

uses ExtCtrls, ComObj

private
    { Private declarations }
    StrExcelFile:String;
    
//

function ExcelSaveAsText(ExcelFile, TextFile: TFileName): Boolean;
const
  xlText = -4158;
var
  ExcelApp: OleVariant;
  vTemp1, vTemp2, vTemp3: OLEVariant;
begin
  Result := False;
  try
    ExcelApp := CreateOleObject('Excel.Application');
  except
    // Fehler beim öffnen von Excel...
    // Error occured...
    Exit;
  end;
  try
    ExcelApp.Workbooks.Open(ExcelFile);
    ExcelApp.DisplayAlerts := False;
    vTemp3 := False;
    vTemp2 := xlText;
    vTemp1 := TextFile;
    ExcelApp.ActiveWorkbook.SaveAs(vTemp1, vTemp2, vTemp3);
    Result := True;
  finally
    ExcelApp.Quit;
    ExcelApp := Unassigned;
  end;
end;

Excel Mappe laden :

procedure TForm1.Button1Click(Sender: TObject);
begin
  if OpenDialog1.Execute then
  begin
    StrExcelFile := OpenDialog1.FileName;
    ExcelSaveAsText(StrExcelFile,'C:\temp.txt') ;
    Showmessage('Saved as '+StrExcelFile);
  end;
end;