2 using System
.Threading
;
3 using System
.Threading
.Tasks
;
7 public static int Main ()
9 Task
<int> t
= TestMethod ();
14 } catch (InvalidOperationException
) {
18 t
.RunSynchronously ();
20 } catch (InvalidOperationException
) {
23 Console
.WriteLine ("ok");
27 async static Task
<int> TestMethod ()
29 await Task
.Delay (100000);