Add Multiplatform HISP-NOOBS

HorseIsleServer/MPN00BS/ServerSelection.axaml.cs

@@ -0,0 +1,37 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using System;
+
+namespace MPN00BS
+{
+    public partial class ServerSelection : Window
+    {
+        public ServerSelection()
+        {
+            InitializeComponent();
+#if DEBUG
+            this.AttachDevTools();
+#endif
+        }
+
+        private void InitializeComponent()
+        {
+            AvaloniaXamlLoader.Load(this);
+            serverIp = this.FindControl<TextBox>("serverIp");
+            serverPort = this.FindControl<NumericUpDown>("serverPort");
+        }
+        private void joinServer_Click(object sender, RoutedEventArgs e)
+        {
+            this.Hide();
+            ServerStarter.StartHttpServer();
+            ServerStarter.StartHorseIsleClient(OnClientExit, serverIp.Text, Convert.ToInt32(serverPort.Value));
+        }
+
+        private void OnClientExit()
+        {
+            this.Close();
+        }
+    }
+}