sample code

MySolution/ConsoleApp/Samples/MessagePrinterSample.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Diagnostics;
+using System.Threading.Tasks;
+
+namespace Samples
+{
+    class MessagePrinterSample
+    {
+        private delegate Task MessagePrinter(string message);
+
+        private static async Task PrintMessageAsync(string message)
+        {
+            await Task.Delay(1000);
+            Console.WriteLine(message);
+        }
+
+        public static void Sample()
+        {
+            MessagePrinter printer = PrintMessageAsync;
+            Console.WriteLine("Start...");
+            
+            printer("This is first message");
+            printer("This is second message");
+            printer("This is third message");
+            
+            Console.WriteLine("Finish...");
+        }
+    }
+}