将delphi stringgrid导出为ex​​cel

我正在尝试将数据从delphi 7中的stringgrid导出到microsoft excel.我一直在用这个代码来做：

objExcel := TExcelApplication.Create(nil);
  objExcel.Visible[LOCALE_USER_DEFAULT] := true;
  objWB := objExcel.workbooks.add(null,LOCALE_USER_DEFAULT);
  lineNumber := 1;

  for i:=1 to stringgrid1.rowcount-1 do begin
    for j:=0 to stringgrid1.ColCount-1 do begin
      objWB.Worksheets.Application.Cells.Item[i+lineNumber,j+1] := ''''+stringgrid1.Cells[j,i];
    end;
  end;

但是当数据很大时,需要很长时间才能完成.有没有其他更快的方法将数据从delphi 7 stringgrid导出到excel？

解决方法

最快的方法是使用Variant数组,并将整个数组传递给Excel：

uses OleAuto;

var
  xls,wb,Range: OLEVariant;
  arrData: Variant;
  RowCount,ColCount,i,j: Integer;
begin
  {create variant array where we'll copy our data}
  RowCount := StringGrid1.RowCount;
  ColCount := StringGrid1.ColCount;
  arrData := VararrayCreate([1,RowCount,1,ColCount],varVariant);

  {fill array}
  for i := 1 to RowCount do
    for j := 1 to ColCount do
      arrData[i,j] := StringGrid1.Cells[j-1,i-1];

  {initialize an instance of Excel}
  xls := CreateOLEObject('Excel.Application');

  {create workbook}
  wb := xls.Workbooks.Add;

  {retrieve a range where data must be placed}
  Range := wb.WorkSheets[1].Range[wb.WorkSheets[1].Cells[1,1],wb.WorkSheets[1].Cells[RowCount,ColCount]];

  {copy data from allocated variant array}
  Range.Value := arrData;

  {show Excel with our data}
  xls.Visible := True;
end;