Added application message dialog for .Net Forms and Console apps.

SampleApplications/Samples/NetCoreConsoleServer/Program.cs

@@ -18,12 +18,47 @@ using System.Threading.Tasks;
 
 namespace NetCoreConsoleServer
 {
+    public class ApplicationMessageDlg : IApplicationMessageDlg
+    {
+        private string message = string.Empty;
+        private bool ask = false;
+
+        public override void Message(string text, bool ask)
+        {
+            this.message = text;
+            this.ask = ask;
+        }
+
+        public override async Task<bool> ShowAsync()
+        {
+            if (ask)
+            {
+                message += " (y/n, default y): ";
+                Console.Write(message);
+            }
+            else
+            {
+                Console.WriteLine(message);
+            }
+            if (ask)
+            {
+                ConsoleKeyInfo result = Console.ReadKey();
+                return await Task.FromResult((result.KeyChar == 'y') || (result.KeyChar == 'Y') || (result.KeyChar == '\r'));
+            }
+            else
+            {
+                return await Task.FromResult(true);
+            }
+        }
+    }
+
     public class Program
     {
         public static void Main(string[] args)
         {
             try
             {
+                ApplicationInstance.MessageDlg = new ApplicationMessageDlg();
                 ApplicationInstance application = new ApplicationInstance();
                 application.ApplicationName = "UA Sample Server";
                 application.ApplicationType = ApplicationType.Server;