偶看新闻痤疮最佳治疗药物:delphi导出数据至Excel的七种方法
来源：百度文库 编辑：偶看新闻 时间：2024/04/30 04:40:04
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
-------------------------------------------------------------------------------------------------
*************************************************************************************************
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;
-----------------------------------------------------------------------------------------------------------------------------------------------
****************************************************************************************************************************************
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.width:=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;
--------------------------------------------------------------------------------------------------------------------
********************************************************************************************************************
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;