delphi 導出到excel的7種方法

本文來自 愛好者8888 的CSDN 博客 ，全文地址請點擊：https://blog.csdn.net/kpc2000/article/details/17066823?utm_source=copy

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第一種方法delphi 快速導出excel

uses ComObj,clipbrd;
function ToExcel(sfilename:string; ADOQuery:TADOQuery):boolean;
const
      xlNormal=-4143;
var
    y     : integer;
    tsList : TStringList;
    s,filename  :string;
    aSheet :Variant;
    excel :OleVariant;
    savedialog  :tsavedialog;
begin
    Result := true;
    try
         excel:=CreateOleObject('Excel.Application');
         excel.workbooks.add;
      except
            //screen.cursor:=crDefault;
         showmessage('無法調用Excel！');
         exit;
    end;
    savedialog:=tsavedialog.Create(nil);
    savedialog.FileName:=sfilename;   //存入文件    savedialog.Filter:='Excel文件(*.xls)|*.xls';
    if   savedialog.Execute   then
    begin
        if   FileExists(savedialog.FileName)   then
              try
                  if   application.messagebox('該文件已經存在，要覆蓋嗎？','詢問',mb_yesno+mb_iconquestion)=idyes
   then
                        DeleteFile(PChar(savedialog.FileName))
                  else
                  begin
                   Excel.Quit;
                   savedialog.free;
                   //screen.cursor:=crDefault;
                   Exit;
                  end;
              except
                  Excel.Quit;
                  savedialog.free;
                  screen.cursor:=crDefault;
                  Exit;
              end;
        filename:=savedialog.FileName;
    end;
    savedialog.free;
    if   filename=''   then
    begin
      result:=true;
      Excel.Quit;
      //screen.cursor:=crDefault;
      exit;
    end;
    aSheet:=excel.Worksheets.Item[1];
    tsList:=TStringList.Create;
    //tsList.Add('查詢結果');   //加入標題    s:='';   //加入字段名    for y := 0 to adoquery.fieldCount - 1 do
    begin
       s:=s+adoQuery.Fields.Fields[y].FieldName+#9 ;
       Application.ProcessMessages;
    end;
    tsList.Add(s);
    try
        try
            ADOQuery.First;
            While Not ADOQuery.Eof do
            begin
                s:='';
                for y:=0 to ADOQuery.FieldCount-1 do
                begin
                    s:=s+ADOQuery.Fields[y].AsString+#9;
                    Application.ProcessMessages;
                end;
                tsList.Add(s);
                ADOQuery.next;
            end;
            Clipboard.AsText:=tsList.Text;
        except
            result:=false;
        end;
    finally
        tsList.Free;
    end;
    aSheet.Paste;
    MessageBox(Application.Handle,'數據導出完畢！','系統提示',MB_ICONINFORMATION
 or MB_OK);
    try
          if   copy(FileName,length(FileName)-3,4)<>'.xls'   then
                FileName:=FileName+'.xls';
          Excel.ActiveWorkbook.SaveAs(FileName,   xlNormal,   '',   '',   False,   False);
    except
      Excel.Quit;
      screen.cursor:=crDefault;
      exit;
    end;
    Excel.Visible   :=   false; //true會自動打開已經保存的excel
    Excel.Quit;
    Excel := UnAssigned;
   
end;

調用:         ToExcel('D:\a.xsl',QueryToExcel);//路徑可以自定義

------------------------------------------------------------------------------------------------- *************************************************************************************************

二; delphi如何導出EXCEL，代碼。非第3方控件首先在Uses處加上ComObj

procedure TForm1.Button1Click(Sender: TObject); 
var  h,k:integer;     
Excelid: OleVariant;     
s: string;
begin     
try        
Excelid := CreateOLEObject('Excel.Application');    
except        
Application.MessageBox('Excel沒有安裝！', '提示信息',
 MB_OK+MB_ICONASTERISK+MB_DEFBUTTON1+MB_APPLMODAL);        
Exit;    
end;      
try     
   ADOQuery1.Close;       
ADOQuery1.SQL.Clear;        
ADOQuery1.SQL.Add('select * from jj_department');        
ADOQuery1.Open;        
k:=ADOQuery1.RecordCount;         
Excelid.Visible := True;         
Excelid.WorkBooks.Add;         
Excelid.worksheets[1].range['A1:c1'].Merge(True);         
Excelid.WorkSheets[1].Cells[1,1].Value :='部門編碼表' ;         
Excelid.worksheets[1].Range['a1:a1'].HorizontalAlignment := $FFFFEFF4;         
Excelid.worksheets[1].Range['a1:a1'].VerticalAlignment := $FFFFEFF4;         
Excelid.WorkSheets[1].Cells[2,1].Value := '組別編號';         
Excelid.WorkSheets[1].Cells[2,2].Value := '公司編號';         
Excelid.WorkSheets[1].Cells[2,3].Value := '組別名稱';         
Excelid.worksheets[1].Range['A1:c1'].Font.Name := '宋體';         
Excelid.worksheets[1].Range['A1:c1'].Font.Size := 9;         
Excelid.worksheets[1].range['A1:c2'].font.bold:=true;         
Excelid.worksheets[1].Range['A2:c2'].Font.Size := 9;         
Excelid.worksheets[1].Range['A2:c2'].HorizontalAlignment := $FFFFEFF4;         
Excelid.worksheets[1].Range['A2:c2'].VerticalAlignment := $FFFFEFF4;         
h:=3;         
ADOQuery1.First;        
while not ADOQuery1.Eof do         
begin           Excelid.WorkSheets[1].Cells[h,1].Value := Adoquery1.FieldByName('Fdept_id').AsString;           
Excelid.WorkSheets[1].Cells[h,2].Value := Adoquery1.FieldByName('Ffdept_id').AsString;           
Excelid.WorkSheets[1].Cells[h,3].Value := Adoquery1.FieldByName('Fdept_name').AsString;           
Inc(h);            
Adoquery1.Next;         
end;         
s := 'A2:f'+ IntToStr(k+2);         
Excelid.worksheets[1].Range[s].Font.Name := '宋體';         
Excelid.worksheets[1].Range[s].Font.size := 9;         
Excelid.worksheets[1].Range[s].Borders.LineStyle := 1;         
Excelid.Quit;          
except        
Application.MessageBox('導入數據出錯！請檢查文件的格式是否正確！', '提示信息',
 MB_OK+MB_ICONASTERISK+MB_DEFBUTTON1+MB_APPLMODAL);    
end;   
MessageBox(GetActiveWindow(), 'EXCEL數據導出成功!', '提示信息',
 MB_OK +MB_ICONWARNING);
end;

三; delphi導出EXCEL

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, Mask, ComCtrls, StdCtrls, Buttons, Grids, ValEdit, IdBaseComponent,
  CheckLst, excel97, ExcelXP, OleServer, ComObj, excel2000, mmsystem, ShellAPI,
  ADODB, DB, DBGrids, clipbrd;
 Var
  FExcel:OleVariant; //excel應用程序  FWorkBook :OleVariant; //工作表  Temsheet:OleVariant; //工作薄  FPicture:OleVariant;//圖片  tmpstr:String;
  range:variant;//范圍  i,j,TemInt:integer;
  TemFileName:String;
begin
  SaveDialog1.Filter:='.xls';
  if SaveDialog1.Execute then
  begin
    TemFileName:=SaveDialog1.FileName+'.xls';
   
    Screen.Cursor:=CrHourGlass;
    TemInt:=0;
    FExcel:= CreateoleObject('excel.Application');
    FWorkBook:=FExcel.WorkBooks.Add(-4167); //新的工作表    Temsheet:=FWorkBook.Worksheets.Add;
    Temsheet.Name:='利潤統計';
    Temsheet.Select;
    Temsheet.Columns[1].ColumnWidth:=4;//設置列寬度    Temsheet.Columns[2].ColumnWidth:=10;
    Temsheet.Columns[3].ColumnWidth:=16;
    Temsheet.Columns[4].ColumnWidth:=10;
    Temsheet.Columns[5].ColumnWidth:=10;
    Temsheet.Columns[6].ColumnWidth:=10;
    Temsheet.Columns[7].ColumnWidth:=10;
    Temsheet.Columns[8].ColumnWidth:=10;
    Temsheet.Columns[9].ColumnWidth:=20;
    Temsheet.Columns[10].ColumnWidth:=15;
    range:=Temsheet.Range[Temsheet.cells[1,1],Temsheet.cells[5,2]];//選定表格    range.select;
    range.merge; //合並單元格    tmpstr:=ExtractFilePath(ParamStr(0))+'tem.jpg';   //添加圖片    FPicture:=Temsheet.Pictures.Insert(tmpstr);
    FPicture.Left:=20;
    FPicture.Top:=5;
    FPicture.width:=50;
    FPicture.height:=50;
    FPicture:=null;
    range:=Temsheet.Range[Temsheet.cells[2,3],Temsheet.cells[3,4]];//選定表格    range.select;
    range.merge;
    Range.Characters.Font.FontStyle :='加粗';
    Temsheet.Cells[2,3].HorizontalAlignment:=-4108; //字居中    Temsheet.Cells[2,3]:=ComSName;
    range:=Temsheet.Range[Temsheet.cells[4,3],Temsheet.cells[4,4]];//選定表格    range.select;
    range.merge;
    Temsheet.Cells[4,3].HorizontalAlignment:=-4108; //字居中    Temsheet.Cells[4,3]:=ComEName;
    range:=Temsheet.Range[Temsheet.cells[2,5],Temsheet.cells[2,6]];//選定表格    range.select;
    range.merge;
    Temsheet.Cells[2,5].HorizontalAlignment:=-4108; //字居中    Temsheet.Cells[2,5]:=ComName;
    Temsheet.Cells[3,5]:='聯系人：';
    Temsheet.Cells[4,5]:='電話：';
    Temsheet.Cells[4,6]:=ComPhone;
    Temsheet.Cells[5,5]:='傳真：';
    Temsheet.Cells[5,6]:=ComFax;
    range:=Temsheet.Range[Temsheet.cells[6,1],Temsheet.cells[6,10]];//選定表格    range.select;
    range.merge;
    range:=Temsheet.Range[Temsheet.cells[7,1],Temsheet.cells[7,2]];//選定表格    range.select;
    range.merge;
    Range.Characters.Font.FontStyle :='加粗';
    Temsheet.Cells[7,1]:='入庫信息：';
    range:=Temsheet.Range[Temsheet.cells[7,3],Temsheet.cells[7,10]];//選定表格    range.select;
    range.merge;
    Temsheet.Cells[8,1]:='序號';
    Temsheet.Cells[8,1].HorizontalAlignment:=-4108; //字居中    Temsheet.Cells[8,1].Interior.Color:=clGray;     //單元格背景色    range:=Temsheet.Range[Temsheet.cells[8,1],Temsheet.cells[8,1]];//選定表格    range.borders.linestyle:=1;//華線    for i:=0 to DBGrid1.Columns.Count - 1 do
    begin
      Temsheet.Cells[8,i+2]:=DBGrid1.Columns[i].Title.Caption;
      Temsheet.Cells[8,i+2].HorizontalAlignment:=-4108; //字居中      Temsheet.Cells[8,i+2].Interior.Color:=clGray;     //單元格背景色      range:=Temsheet.Range[Temsheet.cells[8,i+2],Temsheet.cells[8,i+2]];//選定表格      range.borders.linestyle:=1;//華線    end;
    //////////////////////////////////////////////
    j:=0;
    DBGrid1.DataSource.DataSet.First;
    while not DBGrid1.DataSource.DataSet.Eof do
    begin
      Temsheet.Cells[9+j,1].Value:=j+1;
      Temsheet.Cells[9+j,1].HorizontalAlignment:=-4108; //字居中      range:=Temsheet.Range[Temsheet.cells[9+j,1],Temsheet.cells[9+j,1]];//選定表格      range.borders.linestyle:=1;//華線      for i:=0 to DBGrid1.Columns.Count - 1 do
      begin
        Temsheet.Cells[9+j,i+2].Value:=DBGrid1.Fields[i].AsString;
        range:=Temsheet.Range[Temsheet.cells[9+j,i+2],Temsheet.cells[9+j,i+2]];//選定表格        range.borders.linestyle:=1;//華線      end;
      DBGrid1.DataSource.DataSet.Next;
      j:=j+1;
    end;
    TemInt:=9+ DBGrid1.DataSource.DataSet.RecordCount;
    range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,10]];//選定表格    range.select;
    range.merge;
    TemInt:=TemInt+1;
    range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,2]];//選定表格    range.select;
    range.merge;
    Range.Characters.Font.FontStyle :='加粗';
    Temsheet.Cells[TemInt,1]:='出庫信息：';
   
    range:=Temsheet.Range[Temsheet.cells[TemInt,3],Temsheet.cells[TemInt,10]];//選定表格    range.select;
    range.merge;
    TemInt:=TemInt+1;
    Temsheet.Cells[TemInt,1]:='序號';
    Temsheet.Cells[TemInt,1].HorizontalAlignment:=-4108; //字居中    Temsheet.Cells[TemInt,1].Interior.Color:=clGray;     //單元格背景色    range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,1]];//選定表格    range.borders.linestyle:=1;//華線    for i:=0 to DBGrid2.Columns.Count - 1 do
    begin
      Temsheet.Cells[TemInt,i+2]:=DBGrid2.Columns[i].Title.Caption;
      Temsheet.Cells[TemInt,i+2].HorizontalAlignment:=-4108; //字居中      Temsheet.Cells[TemInt,i+2].Interior.Color:=clGray;     //單元格背景色      range:=Temsheet.Range[Temsheet.cells[TemInt,i+2],Temsheet.cells[TemInt,i+2]];//選定表格      range.borders.linestyle:=1;//華線    end;
    TemInt:=TemInt+1;
    //////////////////////////////////////////////
    j:=0;
    DBGrid2.DataSource.DataSet.First;
    while not DBGrid2.DataSource.DataSet.Eof do
    begin
      Temsheet.Cells[TemInt+j,1].Value:=j+1;
      Temsheet.Cells[TemInt+j,1].HorizontalAlignment:=-4108; //字居中      range:=Temsheet.Range[Temsheet.cells[TemInt+j,1],Temsheet.cells[TemInt+j,1]];//選定表格      range.borders.linestyle:=1;//華線      for i:=0 to DBGrid2.Columns.Count - 1 do
      begin
        Temsheet.Cells[TemInt+j,i+2].Value:=DBGrid2.Fields[i].AsString;
        range:=Temsheet.Range[Temsheet.cells[TemInt+j,i+2],Temsheet.cells[TemInt+j,i+2]];//選定表格        range.borders.linestyle:=1;//華線      end;
      DBGrid2.DataSource.DataSet.Next;
      j:=j+1;
    end;
    TemInt:=TemInt+ DBGrid2.DataSource.DataSet.RecordCount;
    TemInt:=TemInt+1;
   
    range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,10]];//選定表格    range.select;
    range.merge;
    TemInt:=TemInt+1;
    range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,2]];//選定表格    range.select;
    range.merge;
    Range.Characters.Font.FontStyle :='加粗';
    Temsheet.Cells[TemInt,1]:='入庫總額：';
    Temsheet.Cells[TemInt,3]:=Trim(Edit1.Text);
    range:=Temsheet.Range[Temsheet.cells[TemInt,4],Temsheet.cells[TemInt,10]];//選定表格    range.select;
    range.merge;
    TemInt:=TemInt+1;
    range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,2]];//選定表格    range.select;
    range.merge;
    Range.Characters.Font.FontStyle :='加粗';
    Temsheet.Cells[TemInt,1]:='出庫總額：';
    Temsheet.Cells[TemInt,3]:=Trim(Edit2.Text);
    range:=Temsheet.Range[Temsheet.cells[TemInt,4],Temsheet.cells[TemInt,10]];//選定表格    range.select;
    range.merge;
    TemInt:=TemInt+1;
    range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,2]];//選定表格    range.select;
    range.merge;
    Range.Characters.Font.FontStyle :='加粗';
    Temsheet.Cells[TemInt,1]:='總利潤：';
    Temsheet.Cells[TemInt,3]:=Trim(Edit3.Text);
    range:=Temsheet.Range[Temsheet.cells[TemInt,4],Temsheet.cells[TemInt,10]];//選定表格    range.select;
    range.merge;
   
    range:=Temsheet.Range[Temsheet.cells[7,1],Temsheet.cells[TemInt,10]];//選定表格    range.borders.linestyle:=1;//華線    Application.ProcessMessages;
    Screen.Cursor:=CrDefault;
    FExcel.WorkBooks[1].saveas(TemFileName);//保存文件    FExcel.workbooks[1].close; //關閉工作表    Application.ProcessMessages;
    MessageBox(Handle,'導出成功','提示',MB_OK);
    //FExcel.visible:=true;
    FExcel.quit; //關閉Excel
    FExcel := unassigned;
    shellexecute(0,'open',PChar(ExtractFileName(TemFileName)),nil,PChar(ExtractFilePath(TemFileName)),SW_Show);
 
  end;
end;

四;

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, Mask, ComCtrls, StdCtrls, Buttons, Grids, ValEdit, IdBaseComponent,
  CheckLst, excel97, ExcelXP, OleServer, comobj, excel2000, mmsystem,
  ADODB, DB, DBGrids, clipbrd;四;
procedure TFIND_FM.Button1Click(Sender: TObject);
var
  i,j : integer;
  reportname, wpath : string;
  ExApp1 : TExcelApplication;
  ExWrbk1 : TExcelWorkbook;
  ExWrst1 : TExcelWorksheet;  
begin
  
  if Main_FM.ADOQuery_TEMP.IsEmpty then
    begin
    Showmessage('沒有可導出的資料!');
    Exit;
    end
  else
    begin
    Main_FM.SaveDialog1.FileName := 'qcreport';
    if  Main_FM.savedialog1.Execute then
      begin
        //savedialog1.FileName := formatdatetime('YYYYMMDDHHMMSS',now())+'md_orderqc_list.xls';
        reportname :=  formatdatetime('YYYYMMDDHHMMSS',now())+ExtractFileName(Main_FM.savedialog1.FileName);
        //reportname :=  formatdatetime('YYYYMMDDHHMMSS',now())+'';
        wpath := ExtractFilePath(Main_FM.savedialog1.FileName);
        //showmessage(wpath);
        try
          ExApp1 := TExcelApplication.Create(application);
          ExWrbk1 := TExcelWorkbook.Create(application);
          ExWrst1 := TExcelWorksheet.Create(application);
          ExApp1.Connect;
        except
          Showmessage('電腦沒裝Excel!無法導出!');
          Abort;
        end;
        try
          try
          ExApp1.Workbooks.Add(EmptyParam,0);
          ExWrbk1.ConnectTo(ExApp1.Workbooks[1]);
          ExWrst1.ConnectTo(ExWrbk1.Worksheets[1] as _worksheet);
          Main_FM.ADOQuery_TEMP.First;
          for j := 0 to Main_FM.ADOQuery_TEMP.FieldCount-1 do
            begin
            ExWrst1.Cells.Item[1,j+1] := Main_FM.ADOQuery_TEMP.Fields[j].DisplayName;
            //
            end;
          for i := 2 to Main_FM.ADOQuery_TEMP.RecordCount+1 do
            begin
              for j := 0 to Main_FM.ADOQuery_TEMP.FieldCount-1 do
                begin
                ExWrst1.Cells.Item[i,j+1] := Main_FM.ADOQuery_TEMP.Fields[j].Value;
                end;
              Main_FM.ADOQuery_TEMP.Next;
            end;
          ExWrst1.SaveAs(wpath+reportname);
          //ExWrst.SaveAs(formatdatetime('YYYYMMDDHHMMSS',now())+reportname);;
          Showmessage('數據已成功導出!');
          except
          Showmessage('導出失敗!');
          abort;
          end;
        finally
          ExApp1.Disconnect;
          ExApp1.Quit;
          ExApp1.Free;
          ExWrbk1.Free;
          ExWrst1.Free;
        end;
      end;
    end;
end;

delphi導出數據至Excel的三種方法及比較閑來無事，跑到網上搜集了幾種導出DataSet至Excel的幾種方法。另外使用GetTickcount函數計算時差，以便比較。（本來使用Timer控件，但是Timer不適合做高精度時間計算）使用TADOConnect，TADOQuery查詢數據。方法五：   使用TADOQuery + Varaint方法，循環遍歷數據集中數據，直接插入到Excel的WookBook單元。這是初學者最易懂和易接受的方法。在下面代碼中沒有仔細注意語法（比如沒有使用try..finally結構體），如果需要使用，請注意：//使用ADO循環方式保存。

procedure TForm1.btn_WhileClick(Sender: TObject);
var
   Eclapp:variant;
   n:integer;
   filename: string;
   t1,t2: Int64;
begin
   Eclapp := CreateOleObject('Excel.Application');
   Eclapp.WorkBooks.Add;
   Eclapp.Visible:= False;
   filename :='d:\數據1.xls';
   lbl2.Caption := '0';
   if FileExists(fileName) then
     DeleteFile(fileName);
   t1:= GetTickCount;
   qry1.DisableControls;
   qry1.First;
   n:=2;
   while not qry1.Eof do
   begin
     eclapp.cells[n,1] := qry1.Fields[0].AsString;
     eclapp.cells[n,2] := qry1.Fields[1].AsString;
     eclapp.cells[n,3] := qry1.Fields[2].AsString;
     eclapp.cells[n,4] := qry1.Fields[3].AsString;
     //為了簡單，只添加了4個欄位     inc(n);
     qry1.Next;
     application.ProcessMessages;
   end;
   qry1.EnableControls;
   t2:= GetTickCount;
   eclapp.visible := false;
   eclapp.Workbooks[1].SaveAs(filename);
   Eclapp.Quit;
   Eclapp:= Unassigned;
   lbl2.Caption := IntToStr(t2 - t1);
end;

方法六：使用OLE方法導入。   先講TDateSet中的數據保存為二維OLEVariant數組中，再保存到Excel  Sheet中  ///使用OLE方式保存。

procedure
 TForm1.btn_OleVariantClick(Sender: TObject);
var
fileName: string;
xlApp, Sheet: OleVariant;
rowCount, Colcount, index: Integer;
t1,t2: Int64;
function RefToCell(RowID, ColID: Integer): string;
var
    ACount, APos: Integer;
begin
    ACount := ColID div 26;
    APos := ColID mod 26;
    if APos = 0 then
    begin
      ACount := ACount - 1;
      APos := 26;
    end;
    if ACount = 0 then
      Result := Chr(Ord('A') + ColID - 1) + IntToStr(RowID);
    if ACount = 1 then
      Result := 'A' + Chr(Ord('A') + APos - 1) + IntToStr(RowID);
    if ACount > 1 then
      Result := Chr(Ord('A') + ACount - 1) + Chr(Ord('A') + APos - 1) + IntToStr(RowID);
end;
function getData(ds: TDataSet): OleVariant;
var
    Data: OLEVariant;
    i,j : Integer;
begin
    rowCount := ds.RecordCount;
    colCount := ds.FieldCount;
    Data := VarArrayCreate([1, rowCount + 1, 1, colCount], varVariant); //1，rowCount
表示第一維數組的上下標，1，colCount表示第二維數組的上下標    i := 1;
    for j := 0 to colCount - 1 do
    begin
      if not ds.Fields[j].Visible then
        continue;
      Data[i,j + 1] := ds.Fields[j].DisplayLabel;
    end;
    Inc(i);
    ds.DisableControls;
    try
      ds.First;
      while not ds.Eof do
      begin
        for j := 0 to colCount - 1 do
        begin
          Data[i,j + 1] := ds.Fields[j].AsString;
        end;
        Inc(i);
        ds.Next;
        Application.ProcessMessages;
      end;
    finally
      ds.EnableControls;
    end;
    result := Data;
end;
begin
fileName := 'd:\數據.xls';
lbl1.Caption := '0';
t1:= GetTickCount;//開始計時if FileExists(fileName) then
    DeleteFile(fileName);
xlApp := CreateOleObject('Excel.Application');
try
    XLApp.Visible := False;
    XLApp.DisplayAlerts := False;
    XLApp.Workbooks.Add;
    // 刪除多余的 worksheet
    for index := XLApp.SheetsInNewWorkbook downto 2 do
    begin
      XLApp.Workbooks[1].Worksheets[index].Delete;
    end;
    Sheet := XLApp.Workbooks[1].Worksheets[1];
    index := 1;
    if index <> 0 then
      Sheet := XLApp.Workbooks[1].Worksheets.Add;
    Sheet.Name := qry1.Name;
    //Sheet.Columns.NumberFormatLocal := '@'; //設置單元格式為文本    Sheet.Range[RefToCell(1, 1), RefToCell(rowCount + 1, colCount)].Value := getData(qry1);
    XLApp.Workbooks[1].SaveAs(fileName); 
finally
    if not VarIsEmpty(XLApp) then
    begin
      XLApp.Quit;
      XLAPP := Unassigned;
      Sheet := Unassigned;
      application.ProcessMessages;
      t2:= GetTickCount;
      lbl1.Caption := IntToStr( t2 - t1);
    end;
end;
end;

方法七：現在最流行的文件流方法

.....
var
Form1: TForm1;
arXlsBegin: array[0..5] of Word = ($809, 8, 0, $10, 0, 0);
arXlsEnd: array[0..1] of Word = ($0A, 00);
arXlsString: array[0..5] of Word = ($204, 0, 0, 0, 0, 0);
arXlsNumber: array[0..4] of Word = ($203, 14, 0, 0, 0);
arXlsInteger: array[0..4] of Word = ($27E, 10, 0, 0, 0);
arXlsBlank: array[0..4] of Word = ($201, 6, 0, 0, $17);
Procedure ExportExcelFile(FileName: string; bWriteTitle: Boolean; aDataSet: TDataSet);
implementation
{$R *.dfm}
//使用文件流procedure incColRow; //增加行列號begin
    if Col = ADataSet.FieldCount - 1 then
      begin
        Inc(Row);
        Col :=0;
      end
    else
      Inc(Col);
end;
procedure WriteStringCell(AValue: string);//寫字符串數據var
L: Word;
begin
     L := Length(AValue);
     arXlsString[1] := 8 + L;
     arXlsString[2] := Row;
     arXlsString[3] := Col;
     arXlsString[5] := L;
     aFileStream.WriteBuffer(arXlsString, SizeOf (arXlsString));
     aFileStream.WriteBuffer(Pointer(AValue)^, L);
     IncColRow;
end;
procedure WriteIntegerCell(AValue: integer);//寫整數var
    V: Integer;
begin
    arXlsInteger[2] := Row;
    arXlsInteger[3] := Col;
    aFileStream.WriteBuffer(arXlsInteger, SizeOf(arXlsInteger));
    V := (AValue shl 2) or 2;
    aFileStream.WriteBuffer(V, 4);
    IncColRow;
end;
procedure WriteFloatCell(AValue: double );//寫浮點數begin
     arXlsNumber[2] := Row;
     arXlsNumber[3] := Col;
     aFileStream.WriteBuffer(arXlsNumber, SizeOf(arXlsNumber));
     aFileStream.WriteBuffer(AValue, 8);
     IncColRow;
end;
Procedure ExportExcelFile(FileName: string; bWriteTitle: Boolean; aDataSet: TDataSet);
var
i,j: integer;
Col , row: word;
ABookMark: TBookMark;
aFileStream: TFileStream;
//......
//......
begin
   if FileExists(FileName) then DeleteFile(FileName); //文件存在，先刪除      aFileStream := TFileStream.Create(FileName, fmCreate);
   Try    //寫文件頭　      aFileStream.WriteBuffer(arXlsBegin, SizeOf(arXlsBegin));   //寫列頭
　      Col := 0; Row := 0;
      if bWriteTitle then
      begin
        for i := 0 to aDataSet.FieldCount - 1 do
          WriteStringCell(aDataSet.Fields[i].FieldName);
      end;       //寫數據集中的數據
　　      aDataSet.DisableControls;
      //ABookMark := aDataSet.GetBookmark;
      aDataSet.First ;
      while not aDataSet.Eof do
      begin
        for i := 0 to aDataSet.FieldCount - 1 do
        case ADataSet.Fields[i].DataType of
              ftSmallint, ftInteger, ftWord, ftAutoInc, ftBytes:
              WriteIntegerCell(aDataSet.Fields[i].AsInteger);
              ftFloat, ftCurrency, ftBCD:
              WriteFloatCell(aDataSet.Fields[i].AsFloat)
        else
              WriteStringCell(aDataSet.Fields[i].AsString);
        end;
        aDataSet.Next;
        Application.ProcessMessages;
      end;
      //寫文件尾
　      AFileStream.WriteBuffer(arXlsEnd, SizeOf(arXlsEnd));
      //if ADataSet.BookmarkValid(ABookMark) then aDataSet.GotoBookmark(ABookMark);
   Finally
     AFileStream.Free;
     ADataSet.EnableControls;
   end;
end;
//調用：procedure TForm1.btn_FileStreamClick(Sender: TObject);
var
t1,t2: Int64;
begin
lbl3.Caption := '0';
t1:= GetTickCount;
ExportExcelFile('d:\數據2.xls',true,qry1);
t2:= GetTickCount;
lbl3.Caption:= IntToStr(t2 - t1);
end;