最近有個需求,就是將客戶端數據集導入到EXCEL中,當然很多控件都是用文件流的方式導出的,但格式很麻煩,所以需要自己寫個函數,把數據導入到EXCEL中,然後再修改EXCEL的標題和結尾什麼的。。所以就上網查了很多資料,這個函數寫的很好,我就放到網上一起共享下。。
Var
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
Procedure ExportExcelFile(FileName: string; bWriteTitle: Boolean; aDataSet: TDataSet);
var
i,j: integer;
Col , row: word;
ABookMark: TBookMark;
aFileStream: TFileStream;
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;
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;
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;
以上是一個函數,現在只需要調用下就行了,
ExportExcelFile('huangx.xls',true,adoquery1);
//'huangx.xls' 文件名,adoquery1數據集