Copiar dados do Excel para dbgrid ou arquivo todo

function XlsToStringGrid(AGrid: TStringGrid; AXLSFile: string): Boolean;
const
	xlCellTypeLastCell = $0000000B;
var
	XLApp, Sheet: OLEVariant;
	RangeMatrix: Variant;
	x, y, k, r: Integer;
begin
Result:=False;
//Cria Excel- OLE Object
XLApp:=CreateOleObject('Excel.Application');
try
	//Esconde Excel
	XLApp.Visible:=False;
	//Abre o Workbook
	XLApp.Workbooks.Open(AXLSFile);
	Sheet:=XLApp.Workbooks[ExtractFileName(AXLSFile)].WorkSheets[1];
	Sheet.Cells.SpecialCells(xlCellTypeLastCell, EmptyParam).Activate;
	//Pegar o número da última linha
	x:=XLApp.ActiveCell.Row;
	//Pegar o número da última coluna
	y:=XLApp.ActiveCell.Column;
	//Seta Stringgrid linha e coluna
	AGrid.RowCount:=x;
	AGrid.ColCount:=y;
	//Associaca a variant WorkSheet com a variant do Delphi
	RangeMatrix:=XLApp.Range['A1', XLApp.Cells.Item[X, Y]].Value;
	//Cria o loop para listar os registros no TStringGrid
	k:=1;
	repeat
		for r:=1 to y do
			AGrid.Cells[(r - 1),(k - 1)]:=RangeMatrix[K, R];
		Inc(k,1);
	until k > x;
	RangeMatrix:=Unassigned;
finally
	//Fecha o Excel
	if not VarIsEmpty(XLApp) then
		begin
		XLApp.Quit;
		XLAPP:=Unassigned;
		Sheet:=Unassigned;
		Result:=True;
		end;
	end;
end;