C # winform UI asynchronous Delegation

1   Public   Class  Uisync  2   {  3           Private   Static  Isynchronizeinvoke sync;  4   5           Public   Static   Void  Init (isynchronizeinvoke sync)  6  {  7 Sync = Sync;  8   }  9   10           Public   Static   Void  Execute (action Action)  11   {  12 Sync. begininvoke (action, Null  ); 13   }  14   }  15   16       Public   Partial   Class  Form1: Form  17   {  18 Trackbar trackbar1 = New  Trackbar ();  19 Label lbltime =New  Label ();  20 Label lblduration = New  Label ();  21   22           Public  Form1 ()  23   {  24 Uisync. INIT ( This  );  25   } 26   27           Void Events_playerstopped ( Object  Sender, eventargs E)  28   {  29 Uisync. Execute () => Initcontrols ());  30   }  31   32           Void Events_mediaended ( Object Sender, eventargs E)  33   {  34 Uisync. Execute () => Initcontrols ());  35   }  36   37           Private   Void  Initcontrols ()  38   {  39 Trackbar1.value =0  ;  40 Lbltime. Text = "  00:00:00  "  ;  41 Lblduration. Text = "  00:00:00  "  ;  42   }  43   44          Void Events_timechanged ( Object  Sender, eventargs E)  45   {  46 Uisync. Execute () => lbltime. Text = timespan. frommilliseconds (datetime. Now. millisecond). tostring (). substring ( 0 , 8  ));  47   }  48   49           Void Events_playerpositionchanged ( Object  Sender, eventargs E)  50   {  51 Uisync. Execute () => trackbar1.value = ( Int )( 88 * 100  ));  52   }  53   54   55           Void Events_durationchanged ( Object  Sender, eventargs E)  56   {  57 Uisync. Execute () => lblduration. Text = timespan. frommilliseconds (datetime. Now. millisecond). tostring (). substring ( 0 , 8  ));  58   }  59 }