如何提高从dbGRID输出数据到EXCEL的速度?

feng6060_cn 2003-10-09 09:18:08

以下的一段过程 CopyDbDataToExcel([dbGrid1,dbGrid2...])是实现从N个dbGrid中输出数据到EXCEL的,但总觉得输出的速度不佳.看看大家有什么高见或有更好的方法？

procedure TForm1.CopyDbDataToExcel(Args: array of const);
var
iCount, jCount, rCount, I: Integer;
XLApp, Sheet: Variant;
begin
Screen.Cursor := crHourGlass;
if not VarIsEmpty(XLApp) then
begin
XLApp.DisplayAlerts := False;
XLApp.Quit;
VarClear(XLApp);
end;

try
XLApp := CreateOleObject('Excel.Application');
except

Screen.Cursor := crDefault;
Exit;
end;

XLApp.WorkBooks.Add;
XLApp.SheetsInNewWorkbook := High(Args) + 1;

for I := Low(Args) to High(Args) do
begin
XLApp.WorkBooks[1].WorkSheets[I + 1].Name :=
TDBGrid(Args[I].VObject).Name;
Sheet := XLApp.Workbooks[1].WorkSheets[TDBGrid(Args[I].VObject).Name];

if not TDBGrid(Args[I].VObject).DataSource.DataSet.Active then
begin
Screen.Cursor := crDefault;
Exit;
end;

rCount := TDBGrid(Args[I].VObject).Columns.Count - 1;
TDBGrid(Args[I].VObject).DataSource.DataSet.First;
for iCount := 0 to rCount do
Sheet.Cells[1, iCount + 1] :=
TDBGrid(Args[I].VObject).Columns.Items[iCount].Title.Caption;

jCount := 1;
while not TDBGrid(Args[I].VObject).DataSource.DataSet.EOF do
begin
for iCount := 0 to rCount do
Sheet.Cells[jCount + 1, iCount + 1] :=
TDBGrid(Args[I].VObject).Columns.Items[iCount].Field.AsString;

Inc(jCount);
TDBGrid(Args[I].VObject).DataSource.DataSet.Next;
end;
XlApp.Visible := True;
end;
Screen.Cursor := crDefault;
end;

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