在vb.net里面，我用异步方法更新datagrid的数据
datagrid的container 是一个usercontrol，
TDataManager.GetInstance.Subscribe("GroupManager", UserID, params, New TDataEvent(AddressOf HandleGroupData), New TControlEvent(AddressOf ControlData), Nothing, TSyncMode.smAsync)
如果有数据异步调用HandleGroupData函数来更新。
Private Sub HandleGroupData(ByVal dsh As TDataSubscriptionHandle, ByVal aRow As Object())

Dim params As Object = New Object() {aRow}
'FGroupRefresh point to RefreshGroupDG function
me.Invoke(FGroupRefresh, params)
End Sub

Private Sub RefrehGroupDG(ByVal aRow As Object())
'do something
End Sub
为什么我有时拿不到cpu来处理这个事件？应该怎样做。