Delphi 导出数据至Excel的7种方法【转】

一;

delphi 快速导出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('无法调用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('该文件已经存在，要覆盖吗？','询问',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('查询结果'); //加入标题

 

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,'数据导出完毕！','系统提示',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会自动打开已经保存的excel

Excel.Quit;

Excel := UnAssigned;

 

end;

 

 

调用:

ToExcel('D:a.xsl',QueryToExcel);//路径可以自定义

 

 

 

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*************************************************************************************************

二;

delphi如何导出EXCEL，代码。非第3方控件

 

首先在Uses处加上ComObj

 

procedure TForm1.Button1Click(Sender: TObject);

var h,k:integer;

Excelid: OleVariant;

s: string;

begin

try

Excelid := CreateOLEObject('Excel.Application');

except

Application.MessageBox('Excel没有安装！', '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 :='部门编码表' ;

Excelid.worksheets[1].Range['a1:a1'].HorizontalAlignment := $FFFFEFF4;

Excelid.worksheets[1].Range['a1:a1'].VerticalAlignment := $FFFFEFF4;

Excelid.WorkSheets[1].Cells[2,1].Value := '组别编号';

Excelid.WorkSheets[1].Cells[2,2].Value := '公司编号';

Excelid.WorkSheets[1].Cells[2,3].Value := '组别名称';

Excelid.worksheets[1].Range['A1:c1'].Font.Name := '宋体';

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 := '宋体';

Excelid.worksheets[1].Range[s].Font.size := 9;

Excelid.worksheets[1].Range[s].Borders.LineStyle := 1;

Excelid.Quit;

except

Application.MessageBox('导入数据出错！请检查文件的格式是否正确！', '提示信息', MB_OK+MB_ICONASTERISK+MB_DEFBUTTON1+MB_APPLMODAL);

end;

MessageBox(GetActiveWindow(), 'EXCEL数据导出成功!', '提示信息', MB_OK +MB_ICONWARNING);

end;

 

 

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****************************************************************************************************************************************

三;

delphi导出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应用程序

FWorkBook :OleVariant; //工作表

Temsheet:OleVariant; //工作薄

FPicture:OleVariant;//图片

tmpstr:String;

range:variant;//范围

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:='利润统计';

 

Temsheet.Select;

Temsheet.Columns[1].ColumnWidth:=4;//设置列宽度

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]];//选定表格

range.select;

range.merge; //合并单元格

 

tmpstr:=ExtractFilePath(ParamStr(0))+'tem.jpg'; //添加图片

FPicture:=Temsheet.Pictures.Insert(tmpstr);

FPicture.Left:=20;

FPicture.Top:=5;

FPicture.=50;

FPicture.height:=50;

FPicture:=null;

 

 

range:=Temsheet.Range[Temsheet.cells[2,3],Temsheet.cells[3,4]];//选定表格

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]];//选定表格

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]];//选定表格

range.select;

range.merge;

Temsheet.Cells[2,5].HorizontalAlignment:=-4108; //字居中

Temsheet.Cells[2,5]:=ComName;

 

Temsheet.Cells[3,5]:='联系人：';

Temsheet.Cells[4,5]:='电话：';

Temsheet.Cells[4,6]:=ComPhone;

Temsheet.Cells[5,5]:='传真：';

Temsheet.Cells[5,6]:=ComFax;

 

range:=Temsheet.Range[Temsheet.cells[6,1],Temsheet.cells[6,10]];//选定表格

range.select;

range.merge;

 

range:=Temsheet.Range[Temsheet.cells[7,1],Temsheet.cells[7,2]];//选定表格

range.select;

range.merge;

Range.Characters.Font.FontStyle :='加粗';

Temsheet.Cells[7,1]:='入库信息：';

 

range:=Temsheet.Range[Temsheet.cells[7,3],Temsheet.cells[7,10]];//选定表格

range.select;

range.merge;

 

Temsheet.Cells[8,1]:='序号';

Temsheet.Cells[8,1].HorizontalAlignment:=-4108; //字居中

Temsheet.Cells[8,1].Interior.Color:=clGray; //单元格背景色

range:=Temsheet.Range[Temsheet.cells[8,1],Temsheet.cells[8,1]];//选定表格

range.borders.linestyle:=1;//华线

 

 

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; //单元格背景色

range:=Temsheet.Range[Temsheet.cells[8,i+2],Temsheet.cells[8,i+2]];//选定表格

range.borders.linestyle:=1;//华线

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]];//选定表格

range.borders.linestyle:=1;//华线

 

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]];//选定表格

range.borders.linestyle:=1;//华线

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]];//选定表格

range.select;

range.merge;

 

TemInt:=TemInt+1;

 

range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,2]];//选定表格

range.select;

range.merge;

Range.Characters.Font.FontStyle :='加粗';

Temsheet.Cells[TemInt,1]:='出库信息：';

 

range:=Temsheet.Range[Temsheet.cells[TemInt,3],Temsheet.cells[TemInt,10]];//选定表格

range.select;

range.merge;

 

TemInt:=TemInt+1;

 

Temsheet.Cells[TemInt,1]:='序号';

Temsheet.Cells[TemInt,1].HorizontalAlignment:=-4108; //字居中

Temsheet.Cells[TemInt,1].Interior.Color:=clGray; //单元格背景色

range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,1]];//选定表格

range.borders.linestyle:=1;//华线

 

 

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; //单元格背景色

range:=Temsheet.Range[Temsheet.cells[TemInt,i+2],Temsheet.cells[TemInt,i+2]];//选定表格

range.borders.linestyle:=1;//华线

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]];//选定表格

range.borders.linestyle:=1;//华线

 

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]];//选定表格

range.borders.linestyle:=1;//华线

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]];//选定表格

range.select;

range.merge;

 

TemInt:=TemInt+1;

 

range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,2]];//选定表格

range.select;

range.merge;

Range.Characters.Font.FontStyle :='加粗';

Temsheet.Cells[TemInt,1]:='入库总额：';

Temsheet.Cells[TemInt,3]:=Trim(Edit1.Text);

range:=Temsheet.Range[Temsheet.cells[TemInt,4],Temsheet.cells[TemInt,10]];//选定表格

range.select;

range.merge;

 

TemInt:=TemInt+1;

 

range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,2]];//选定表格

range.select;

range.merge;

Range.Characters.Font.FontStyle :='加粗';

Temsheet.Cells[TemInt,1]:='出库总额：';

Temsheet.Cells[TemInt,3]:=Trim(Edit2.Text);

range:=Temsheet.Range[Temsheet.cells[TemInt,4],Temsheet.cells[TemInt,10]];//选定表格

range.select;

range.merge;

 

TemInt:=TemInt+1;

 

range:=Temsheet.Range[Temsheet.cells[TemInt,1],Temsheet.cells[TemInt,2]];//选定表格

range.select;

range.merge;

Range.Characters.Font.FontStyle :='加粗';

Temsheet.Cells[TemInt,1]:='总利润：';

Temsheet.Cells[TemInt,3]:=Trim(Edit3.Text);

range:=Temsheet.Range[Temsheet.cells[TemInt,4],Temsheet.cells[TemInt,10]];//选定表格

range.select;

range.merge;

 

range:=Temsheet.Range[Temsheet.cells[7,1],Temsheet.cells[TemInt,10]];//选定表格

range.borders.linestyle:=1;//华线

 

Application.ProcessMessages;

 

Screen.Cursor:=CrDefault;

FExcel.WorkBooks[1].saveas(TemFileName);//保存文件

FExcel.workbooks[1].close; //关闭工作表

Application.ProcessMessages;

MessageBox(Handle,'导出成功','提示',MB_OK);

//FExcel.visible:=true;

FExcel.quit; //关闭Excel

FExcel := unassigned;

shellexecute(0,'open',PChar(ExtractFileName(TemFileName)),nil,PChar(ExtractFilePath(TemFileName)),SW_Show);

 

end;

end;

 

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********************************************************************************************************************

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;

 

 

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**************************************************************************************************

delphi导出数据至Excel的三种方法及比较

闲来无事，跑到网上搜集了几种导出DataSet至Excel的几种方法。另外使用GetTickcount函数计算时差，以便比较。（本来使用Timer控件，但是Timer不适合做高精度时间计算）

使用TADOConnect，TADOQuery查询数据。

方法五：

使用TADOQuery + Varaint方法，循环遍历数据集中数据，直接插入到Excel的WookBook单元。这是初学者最易懂和易接受的方法。

在下面代码中没有仔细注意语法（比如没有使用try..finally结构体），如果需要使用，请注意：

//使用ADO循环方式保存

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:数据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;

//为了简单，只添加了4个栏位

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方法导入。

 

先讲TDateSet中的数据保存为二维OLEVariant数组中，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 表示第一维数组的上下标，1，colCount表示第二维数组的上下标

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:数据.xls';

lbl1.Caption := '0';

t1:= GetTickCount;//开始计时

if FileExists(fileName) then

DeleteFile(fileName);

xlApp := CreateOleObject('Excel.Application');

try

XLApp.Visible := False;

XLApp.DisplayAlerts := False;

XLApp.Workbooks.Add;

// 删除多余的 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 := '@'; //设置单元格式为文本

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：现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; //增加行列号

begin

if Col = ADataSet.FieldCount - 1 then

begin

Inc(Row);

Col :=0;

end

else

Inc(Col);

end;

 

procedure WriteStringCell(AValue: string);//写字符串数据

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);//写整数

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 );//写浮点数

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，先删除

aFileStream := TFileStream.Create(FileName, fmCreate);

Try //写文件头　

aFileStream.WriteBuffer(arXlsBegin, SizeOf(arXlsBegin)); //写列头 　

Col := 0; Row := 0;

if bWriteTitle then

begin

for i := 0 to aDataSet.FieldCount - 1 do

WriteStringCell(aDataSet.Fields[i].FieldName);

end; //写数据集中的数据 　　

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;

//写文件尾 　

AFileStream.WriteBuffer(arXlsEnd, SizeOf(arXlsEnd));

//if ADataSet.BookmarkValid(ABookMark) then aDataSet.GotoBookmark(ABookMark);

Finally

AFileStream.Free;

ADataSet.EnableControls;

end;

end;

 

//调用：

procedure TForm1.btn_FileStreamClick(Sender: TObject);

var

t1,t2: Int64;

begin

lbl3.Caption := '0';

t1:= GetTickCount;

ExportExcelFile('d:数据2.xls',true,qry1);

t2:= GetTickCount;

lbl3.Caption:= IntToStr(t2 - t1);

end;