How we Open any form in MS Dynamics AX Using X++ ?

void run()
{
Args args =new Args();
PurchLine PurchLine;
FormRun   formRun;
InventBatch _InventBatch;
    ;
    select _InventBatch where PurchLine.ItemId==Inventbatch.itemId &&       Purchline.PurchId==InventBatch.ReqNo;
    args.name(formstr(InventBatch));

args.record(_InventBatch); // as argument is optional
formRun = classfactory.formRunClass(args);
    formRun.init();
    formRun.run();
    formRun.detach();

    super();
}