【原】在delphi中，从dbgrid导出数据保存成excel文件

function TForm1.ExportDBGrid(DBGrid: TDBGrid; SheetName: string): boolean;//直接保存，不显示EXCEL

var

c, r, i, j: integer;

app: Olevariant;

TempFileName, ResultFileName: string;

begin

try

    result := True;

      app := CreateOLEObject('Excel.application');

    // app.WorkBooks.Add(xlWBatWorkSheet);   

    except

      Application.MessageBox('Excel没有正确安装！','警告',MB_OK);

      result := False;

      exit;

    end;

    SaveDialog1.DefaultExt := 'xls';

    SaveDialog1.FileName := SheetName;

    if SaveDialog1.Execute then

      TempFileName := SaveDialog1.FileName

    else

      Exit;

    app.Workbooks.add;

    app.Visible := false;

    Screen.Cursor := crHourGlass;

    DBGrid.DataSource.DataSet.First;

    c := DBGrid.DataSource.DataSet.FieldCount;

    r := DBGrid.DataSource.DataSet.RecordCount;

    Application.ProcessMessages;

    for i := 0 to c - 1 do

      app.cells(1, 1 + i) := DBGrid.DataSource.DataSet.Fields[i].DisplayLabel;

    for j := 1 to r do

    begin

      for i := 0 to c - 1 do

        app.cells(j + 1, 1 + i) := DBGrid.DataSource.DataSet.Fields[i].AsString;

      DBGrid.DataSource.DataSet.Next;

    end;   

    ResultFileName := TempFileName;

    if ResultFileName = '' then

      ResultFileName := '数据导出';

    if FileExists(TempFileName) then

     DeleteFile(TempFileName);

    app.Activeworkbook.saveas(TempFileName);

    app.Activeworkbook.close(false);

    app.quit;

    app := unassigned;

end;

procedure TForm1.Button2Click(Sender: TObject);   //按钮保存

begin

try

    Screen.Cursor := crHourGlass;

    ExportDBGrid(DBGrid1, '导出数据');    //暂时将导出的文件名称为“导出数据”（的execl文件）   

finally

    Screen.Cursor := crDefault;

end;

end;