从数据库中取出数据并按格式写入动态数组中。
动态数组中的数据按类型EXCEL可能要生成多个Sheet,SheetName不同,内容不同。
参考了以下的程序,但Excel只能生成一个Sheet,且SheetName和文件名一样。该如何调整才能我所需要的实现?
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); 接着调用下面的函数。 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;
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.GetBook;
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;
//写文件尾
AFileStream.WriteBuffer(arXlsEnd, SizeOf(arXlsEnd));
if ADataSet.BookValid(ABookMark) then aDataSet.GotoBook(ABookMark);
Finally
AFileStream.Free;
ADataSet.EnableControls;
end;
end;
动态数组中的数据按类型EXCEL可能要生成多个Sheet,SheetName不同,内容不同。
参考了以下的程序,但Excel只能生成一个Sheet,且SheetName和文件名一样。该如何调整才能我所需要的实现?
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); 接着调用下面的函数。 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;
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.GetBook;
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;
//写文件尾
AFileStream.WriteBuffer(arXlsEnd, SizeOf(arXlsEnd));
if ADataSet.BookValid(ABookMark) then aDataSet.GotoBook(ABookMark);
Finally
AFileStream.Free;
ADataSet.EnableControls;
end;
end;
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以前只见过用ExcepApplication对象的