[ADDED] the inlog screen and a data singleton for the client

Client/ClientData.cs

@@ -0,0 +1,59 @@
+using SharedClientServer;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Text;
+
+namespace Client
+{
+    class ClientData
+    {
+        private static ClientData _instance;
+        private static readonly object padlock = new object();
+
+        public static ClientData Instance
+        {
+            get
+            {
+                lock (padlock)
+                {
+                    if (_instance == null)
+                    {
+                        _instance = new ClientData();
+                    }
+                    return _instance;
+                }
+            }
+        }
+
+
+        private User _user;
+        private Client _client;
+        private Lobby _lobby;
+
+        private ClientData()
+        {
+
+        }
+
+
+        public User User
+        {
+            get { return _user; }
+            set { _user = value; }
+        }
+
+        public Client Client
+        {
+            get { return _client; }
+            set { _client = value; }
+        }
+
+        public Lobby Lobby
+        {
+            get { return _lobby; }
+            set { _lobby = value; }
+        }
+
+    }
+}