这是程序员大本营2001里面一位高人dogbear2000写的代码,参考以下吧单元:uExcelTools 作者: Bear 功能:保存数据集,如TTable,TQuery,TClientDataSet等为Excel文件, 包含标题,可以只将一部分字段导出 这一点通过设置DataSet中要不导出字段的Tag值大于某一个值来处理 原理:调用 Microsoft Excel Ole对象 调用方式: Function DataSetToExcel( DataSet:TDataSet;FieldTagMax:Integer; Visible:Boolean;ExcelFileName:String=''): Boolean; --------------------------------------------------------------------------------------------------}unit UExcelTools;interfaceuses classes, comctrls, stdctrls, windows, Dialogs, controls, SysUtils, Db,forms,DBClient,ComObj;//把数据集导入ExcelSheet的核心函数 function DataSetToExcelSheet ( DataSet :TDataSet; FieldTagMax :Integer; // 字段的Tag值如果大于这个值,就不导出到Excel Sheet :OleVariant ): Boolean;//实际使用的函数,内部调用了DataSetToExcelSheet,在外面加入UI接口和错误处理 function DataSetToExcel ( DataSet :TDataSet; // 要转换的数据集 FieldTagMax :Integer; // 字段的Tag值如果大于这个值,就不导出到Excel Visible :Boolean; // 是否让做转换工作的Excel可见 ExcelFileName:String='' // Excel文件名,*.xls ): Boolean;implementationFunction DataSetToExcelSheet(DataSet:TDataSet;FieldTagMax:Integer;Sheet:OleVariant): Boolean; var Row,Col,FieldIndex :Integer; BK:TBookMark; begin Result := False; if not Dataset.Active then exit; BK:=DataSet.GetBookMark; DataSet.DisableControls; Sheet.Activate; try // 列标题 Row:=1; Col:=1; for FieldIndex:=0 to DataSet.FieldCount-1 do begin if DataSet.Fields[FieldIndex].Tag <= FieldTagMax then begin Sheet.Cells(Row,Col) :=DataSet.Fields[FieldIndex].DisplayLabel; Inc(Col); end; end; // 表内容 DataSet.First; while Not DataSet.Eof do begin Row:=Row+1; Col:=1; for FieldIndex:=0 to DataSet.FieldCount-1 do begin if DataSet.Fields[FieldIndex].Tag <= FieldTagMax then begin Sheet.Cells(Row,Col):=DataSet.Fields[FieldIndex].AsString; Inc(Col); end; end; DataSet.Next; end; Result := True; finally DataSet.GotoBookMark(BK); DataSet.EnableControls; end; end; Function DataSetToExcel( DataSet:TDataSet;FieldTagMax:Integer; Visible:Boolean;ExcelFileName:String=''): Boolean; var ExcelObj, Excel, WorkBook, Sheet: OleVariant; OldCursor:TCursor; SaveDialog:TSaveDialog; begin Result := False; if not Dataset.Active then exit; OldCursor:=Screen.Cursor; Screen.Cursor:=crHourGlass; try ExcelObj := CreateOleObject('Excel.Sheet'); Excel := ExcelObj.Application; Excel.Visible := Visible ; WorkBook := Excel.Workbooks.Add ; Sheet:= WorkBook.Sheets[1]; except MessageBox(GetActiveWindow,'无法调用Mircorsoft Excel! '+chr(13)+chr(10)+ '请检查是否安装了Mircorsoft Excel。','提示',MB_OK+MB_ICONINFORMATION); Screen.Cursor:=OldCursor; Exit; end; Result:=DataSetToExcelSheet(DataSet,FieldTagMax,Sheet) ; if Result then if Not Visible then begin if ExcelFileName<>'' then WorkBook.SaveAs(FileName:=ExcelFileName) else begin SaveDialog:=TSaveDialog.Create(Nil); SaveDialog.Filter := 'Microsoft Excel 文件¦*.xls'; Result:=SaveDialog.Execute; UpdateWindow(GetActiveWindow); if Result then WorkBook.SaveAs(FileName:=SaveDialog.FileName); SaveDialog.Free; end; Excel.Quit; end; Screen.Cursor:=OldCursor; end;如果要结合dbgrid的话,则在导出数据的时候首先检查记录是否在dbgrid中被选择,如果是,则导出,代码如下: if DBGrid1.SelectedRows.CurrentRowSelected then begin //导出代码 end;
如果你只需要数据不用设置EXCEL格式的话,可转换为CSV文件格式,用EXCEL打开同样好用。下面是实现该功能的通用程序: procedure button1.click(sender); var i,j: integer; s: string; theStringList: Tstringlist; begin s:=''; theStringList:=TStringList.Create; with tableName do begin try Active:=True; except showmessage('不能打开 '+ Name); end; for j:=0 to (RecordCount-1) do begin s:=''; for i:=1 to (FieldCount-1) do begin s:=s+(Fields[i].AsString)+','; end; theStringList.add(s); Next; end; theStringList.savetofile (Name+'.csv'); Showmessage(Name+ '成功导出'); close; end; end;
作者: Bear
功能:保存数据集,如TTable,TQuery,TClientDataSet等为Excel文件,
包含标题,可以只将一部分字段导出
这一点通过设置DataSet中要不导出字段的Tag值大于某一个值来处理
原理:调用 Microsoft Excel Ole对象
调用方式:
Function DataSetToExcel(
DataSet:TDataSet;FieldTagMax:Integer;
Visible:Boolean;ExcelFileName:String=''): Boolean;
--------------------------------------------------------------------------------------------------}unit UExcelTools;interfaceuses
classes, comctrls, stdctrls, windows, Dialogs, controls, SysUtils,
Db,forms,DBClient,ComObj;//把数据集导入ExcelSheet的核心函数
function DataSetToExcelSheet
(
DataSet :TDataSet;
FieldTagMax :Integer; // 字段的Tag值如果大于这个值,就不导出到Excel
Sheet :OleVariant
): Boolean;//实际使用的函数,内部调用了DataSetToExcelSheet,在外面加入UI接口和错误处理
function DataSetToExcel
(
DataSet :TDataSet; // 要转换的数据集
FieldTagMax :Integer; // 字段的Tag值如果大于这个值,就不导出到Excel
Visible :Boolean; // 是否让做转换工作的Excel可见
ExcelFileName:String='' // Excel文件名,*.xls
): Boolean;implementationFunction DataSetToExcelSheet(DataSet:TDataSet;FieldTagMax:Integer;Sheet:OleVariant): Boolean;
var
Row,Col,FieldIndex :Integer;
BK:TBookMark;
begin
Result := False;
if not Dataset.Active then exit;
BK:=DataSet.GetBookMark;
DataSet.DisableControls; Sheet.Activate;
try // 列标题
Row:=1;
Col:=1;
for FieldIndex:=0 to DataSet.FieldCount-1 do
begin
if DataSet.Fields[FieldIndex].Tag <= FieldTagMax then
begin
Sheet.Cells(Row,Col) :=DataSet.Fields[FieldIndex].DisplayLabel;
Inc(Col);
end;
end;
// 表内容
DataSet.First;
while Not DataSet.Eof do
begin
Row:=Row+1;
Col:=1;
for FieldIndex:=0 to DataSet.FieldCount-1 do
begin
if DataSet.Fields[FieldIndex].Tag <= FieldTagMax then
begin
Sheet.Cells(Row,Col):=DataSet.Fields[FieldIndex].AsString;
Inc(Col);
end;
end;
DataSet.Next;
end; Result := True;
finally
DataSet.GotoBookMark(BK);
DataSet.EnableControls;
end;
end;
Function DataSetToExcel(
DataSet:TDataSet;FieldTagMax:Integer;
Visible:Boolean;ExcelFileName:String=''): Boolean;
var
ExcelObj, Excel, WorkBook, Sheet: OleVariant;
OldCursor:TCursor;
SaveDialog:TSaveDialog;
begin
Result := False;
if not Dataset.Active then exit; OldCursor:=Screen.Cursor;
Screen.Cursor:=crHourGlass; try
ExcelObj := CreateOleObject('Excel.Sheet');
Excel := ExcelObj.Application;
Excel.Visible := Visible ;
WorkBook := Excel.Workbooks.Add ;
Sheet:= WorkBook.Sheets[1];
except
MessageBox(GetActiveWindow,'无法调用Mircorsoft Excel! '+chr(13)+chr(10)+
'请检查是否安装了Mircorsoft Excel。','提示',MB_OK+MB_ICONINFORMATION);
Screen.Cursor:=OldCursor;
Exit;
end; Result:=DataSetToExcelSheet(DataSet,FieldTagMax,Sheet) ;
if Result then
if Not Visible then
begin
if ExcelFileName<>''
then WorkBook.SaveAs(FileName:=ExcelFileName)
else begin
SaveDialog:=TSaveDialog.Create(Nil);
SaveDialog.Filter := 'Microsoft Excel 文件¦*.xls';
Result:=SaveDialog.Execute;
UpdateWindow(GetActiveWindow);
if Result then
WorkBook.SaveAs(FileName:=SaveDialog.FileName);
SaveDialog.Free;
end;
Excel.Quit;
end;
Screen.Cursor:=OldCursor;
end;如果要结合dbgrid的话,则在导出数据的时候首先检查记录是否在dbgrid中被选择,如果是,则导出,代码如下:
if DBGrid1.SelectedRows.CurrentRowSelected then
begin
//导出代码
end;
procedure button1.click(sender);
var
i,j: integer;
s: string;
theStringList: Tstringlist; begin
s:='';
theStringList:=TStringList.Create;
with tableName do
begin
try
Active:=True;
except
showmessage('不能打开 '+ Name);
end;
for j:=0 to (RecordCount-1) do
begin
s:='';
for i:=1 to (FieldCount-1) do
begin
s:=s+(Fields[i].AsString)+',';
end;
theStringList.add(s);
Next;
end;
theStringList.savetofile
(Name+'.csv');
Showmessage(Name+ '成功导出');
close;
end;
end;