diff --git a/CTZLauncher/CTZAuth/CTZAuth.cs b/CTZLauncher/CTZAuth/CTZAuth.cs
new file mode 100644
index 0000000..fa316d2
--- /dev/null
+++ b/CTZLauncher/CTZAuth/CTZAuth.cs
@@ -0,0 +1,42 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows.Threading;
+using CityCraft;
+namespace CTZLauncher.CTZAuth
+{
+    class CTZAuth : ICTZAuth
+    {
+        HttpHelper http = new HttpHelper();
+        string address;
+        string port;
+        public bool isRegister(string username)
+        {
+            return getResult(address + ":" + port + "/isregister?username=" + username);
+        }
+
+        public bool Register(string username, string password)
+        {
+            return false;
+        }
+
+        public bool isLogin(string username)
+        {
+            return getResult(address + ":" + port + "/islogin?username=" + username);
+        }
+
+        public bool Login(string username, string password)
+        {
+            return false;
+        }
+
+        public bool getResult(string url)
+        {
+            string result = http.Send(HttpMethod.GET, url);
+            if (result == "true")
+                return true;
+            return false;
+        }
+    }
+}
diff --git a/CTZLauncher/CTZAuth/ICTZAuth.cs b/CTZLauncher/CTZAuth/ICTZAuth.cs
new file mode 100644
index 0000000..a9487d8
--- /dev/null
+++ b/CTZLauncher/CTZAuth/ICTZAuth.cs
@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace CTZLauncher.CTZAuth
+{
+    interface ICTZAuth
+    {
+        public abstract bool isRegister(string username);
+
+        public abstract bool Register(string username, string password);
+
+        public abstract bool isLogin(string username);
+
+        public abstract bool Login(string username, string password);
+
+    }
+}
diff --git a/CTZLauncher/CTZLauncher.csproj b/CTZLauncher/CTZLauncher.csproj
index 5ad845e..c749904 100644
--- a/CTZLauncher/CTZLauncher.csproj
+++ b/CTZLauncher/CTZLauncher.csproj
@@ -65,6 +65,8 @@
       <DependentUpon>App.xaml</DependentUpon>
       <SubType>Code</SubType>
     </Compile>
+    <Compile Include="CTZAuth\CTZAuth.cs" />
+    <Compile Include="CTZAuth\ICTZAuth.cs" />
     <Compile Include="HttpHelper.cs" />
     <Compile Include="MainWindow.xaml.cs">
       <DependentUpon>MainWindow.xaml</DependentUpon>
diff --git a/CTZLauncher/HttpHelper.cs b/CTZLauncher/HttpHelper.cs
index 52d0ce9..ce42cf8 100644
--- a/CTZLauncher/HttpHelper.cs
+++ b/CTZLauncher/HttpHelper.cs
@@ -12,6 +12,7 @@ using System.Security.Cryptography.X509Certificates;
 using System.Text;
 using System.Text.RegularExpressions;
 using System.Threading;
+using System.Windows.Threading;
 
 namespace CityCraft
 {
@@ -60,12 +61,33 @@ namespace CityCraft
         /// <param name="geturl">请求地址</param>
         /// <param name="cookieser">Cookies存储器</param>
         /// <returns>请求返回的Stream</returns>
-        public void Send(HttpMethod method, string url)
+        public string Send(HttpMethod method, string url, bool Async = false)
         {
             readyState = HttpReadyState.载入;
             ParseURL(url);
             args.Method = method;
             new Thread(new ThreadStart(ReciveData)).Start();
+            if (!Async)
+            {
+                while (readyState != HttpReadyState.完成) { this.DoEvent(); }
+                return responseBody;
+            }
+            return string.Empty;
+        }
+
+        /// <summary>
+        /// 模仿C#的Application.Doevent函数。可以适当添加try catch 模块
+        /// </summary>
+        public void DoEvent()
+        {
+            DispatcherFrame frame = new DispatcherFrame();
+            Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Background, new DispatcherOperationCallback(ExitFrame), frame);
+            Dispatcher.PushFrame(frame);
+        }
+        public object ExitFrame(object f)
+        {
+            ((DispatcherFrame)f).Continue = false;
+            return null;
         }
 
         public void ReciveData()
diff --git a/CTZLauncher/MainWindow.xaml b/CTZLauncher/MainWindow.xaml
index e499b27..ba49efb 100644
--- a/CTZLauncher/MainWindow.xaml
+++ b/CTZLauncher/MainWindow.xaml
@@ -66,7 +66,7 @@
                         </Grid>
                         <Grid Margin="30,20,30,30" Height="100" VerticalAlignment="Bottom">
                             <Button Margin="12,24,167,35" Template="{StaticResource CornerButton}"  Width="111" HorizontalAlignment="Center" Content="登录" Click="Login_Click" Background="Green" />
-                            <Button Margin="167,24,12,35" Template="{StaticResource CornerButton}"  Width="111" HorizontalAlignment="Center" Content="注册" Background="Green" />
+                            <Button Name="register" Margin="167,24,12,35" Template="{StaticResource CornerButton}"  Width="111" HorizontalAlignment="Center" Content="注册" Background="Green" Click="register_Click" />
                         </Grid>
                     </Grid>
                 </Grid>
diff --git a/CTZLauncher/MainWindow.xaml.cs b/CTZLauncher/MainWindow.xaml.cs
index 7bcc6d5..ec2bc9f 100644
--- a/CTZLauncher/MainWindow.xaml.cs
+++ b/CTZLauncher/MainWindow.xaml.cs
@@ -160,7 +160,6 @@ namespace CTZLauncher
 
         private void maxmem_TextChanged(object sender, TextChangedEventArgs e)
         {
-
             //屏蔽中文输入和非法字符粘贴输入
             TextBox textBox = sender as TextBox;
             TextChange[] change = new TextChange[e.Changes.Count];
@@ -177,5 +176,15 @@ namespace CTZLauncher
                 }
             }
         }
+
+        private void register_Click(object sender, RoutedEventArgs e)
+        {
+            if (username.Text.Length == 0 || password.Text.Length == 0)
+            {
+                MessageBox.Show("请输入账号密码!");
+                return;
+            }
+
+        }
     }
 }
diff --git a/KMCCC.Shared/Authentication/AuthenticationInfo.cs b/KMCCC.Shared/Authentication/AuthenticationInfo.cs
index 698ba42..b131dda 100644
--- a/KMCCC.Shared/Authentication/AuthenticationInfo.cs
+++ b/KMCCC.Shared/Authentication/AuthenticationInfo.cs
@@ -20,12 +20,12 @@
 		/// <summary>
 		///     UUID不解释
 		/// </summary>
-		public Guid UUID { get; set; }
+		public Guid? UUID { get; set; }
 
 		/// <summary>
 		///     Session不解释
 		/// </summary>
-		public Guid AccessToken { get; set; }
+		public Guid? AccessToken { get; set; }
 
 		/// <summary>
 		///     各种属性（比如Twitch的Session）
diff --git a/KMCCC.Shared/Authentication/OfflineAuthenticator.cs b/KMCCC.Shared/Authentication/OfflineAuthenticator.cs
index 3d124b2..d20cc92 100644
--- a/KMCCC.Shared/Authentication/OfflineAuthenticator.cs
+++ b/KMCCC.Shared/Authentication/OfflineAuthenticator.cs
@@ -1,70 +1,70 @@
-namespace KMCCC.Authentication
-{
-	#region
-
-	using System;
-	using System.Linq;
-	using System.Threading;
-	using System.Threading.Tasks;
-
-	#endregion
-
-	/// <summary>
-	///     离线验证器
-	/// </summary>
-	public class OfflineAuthenticator : IAuthenticator
-	{
-		/// <summary>
-		///     玩家的名字
-		/// </summary>
-		public readonly string DisplayName;
-
-		/// <summary>
-		///     构造离线验证器
-		/// </summary>
-		/// <param name="displayName">玩家的名字</param>
-		public OfflineAuthenticator(string displayName)
-		{
-			DisplayName = displayName;
-		}
-
-		/// <summary>
-		///     标注离线验证器
-		/// </summary>
-		public string Type
-		{
-			get { return "KMCCC.Offline"; }
-		}
-
-		public AuthenticationInfo Do()
-		{
-			if (String.IsNullOrWhiteSpace(DisplayName))
-			{
-				return new AuthenticationInfo
-				{
-					Error = "DisplayName不符合规范"
-				};
-			}
-			if (DisplayName.Count(char.IsWhiteSpace) > 0)
-			{
-				return new AuthenticationInfo
-				{
-					Error = "DisplayName不符合规范"
-				};
-			}
-			return new AuthenticationInfo
-			{
-				AccessToken = Guid.NewGuid(),
-				DisplayName = DisplayName,
-				UUID = Guid.NewGuid(),
-				Properties = "{}",
-				UserType = "Mojang"
-			};
-		}
-
-		public Task<AuthenticationInfo> DoAsync(CancellationToken token)
-		{
-			return Task.Factory.StartNew((Func<AuthenticationInfo>)Do, token);
-		}
-	}
+namespace KMCCC.Authentication
+{
+    #region
+
+    using System;
+    using System.Linq;
+    using System.Threading;
+    using System.Threading.Tasks;
+
+    #endregion
+
+    /// <summary>
+    ///     离线验证器
+    /// </summary>
+    public class OfflineAuthenticator : IAuthenticator
+    {
+        /// <summary>
+        ///     玩家的名字
+        /// </summary>
+        public readonly string DisplayName;
+
+        /// <summary>
+        ///     构造离线验证器
+        /// </summary>
+        /// <param name="displayName">玩家的名字</param>
+        public OfflineAuthenticator(string displayName)
+        {
+            DisplayName = displayName;
+        }
+
+        /// <summary>
+        ///     标注离线验证器
+        /// </summary>
+        public string Type
+        {
+            get { return "KMCCC.Offline"; }
+        }
+
+        public AuthenticationInfo Do()
+        {
+            if (String.IsNullOrWhiteSpace(DisplayName))
+            {
+                return new AuthenticationInfo
+                {
+                    Error = "DisplayName不符合规范"
+                };
+            }
+            if (DisplayName.Count(char.IsWhiteSpace) > 0)
+            {
+                return new AuthenticationInfo
+                {
+                    Error = "DisplayName不符合规范"
+                };
+            }
+            return new AuthenticationInfo
+            {
+                AccessToken = null,
+                DisplayName = DisplayName,
+                UUID = null,
+                Properties = "{}",
+                UserType = "Mojang"
+            };
+        }
+
+        public Task<AuthenticationInfo> DoAsync(CancellationToken token)
+        {
+            return Task.Factory.StartNew((Func<AuthenticationInfo>)Do, token);
+        }
+    }
 }
\ No newline at end of file
diff --git a/KMCCC.Shared/Launcher/LauncherCoreInternal.cs b/KMCCC.Shared/Launcher/LauncherCoreInternal.cs
index 2dbcce1..5187fa4 100644
--- a/KMCCC.Shared/Launcher/LauncherCoreInternal.cs
+++ b/KMCCC.Shared/Launcher/LauncherCoreInternal.cs
@@ -1,217 +1,217 @@
-namespace KMCCC.Launcher
-{
-    #region
-
-    using System;
-    using System.Collections.Generic;
-    using System.Diagnostics;
-    using System.IO;
-    using System.Linq;
-    using System.Threading.Tasks;
-    using Tools;
-
-    #endregion
-
-    partial class LauncherCore
-    {
-        internal object Locker = new object();
-
-        private LaunchResult GenerateArguments(LaunchOptions options, ref MinecraftLaunchArguments args)
-        {
-            try
-            {
-                var authentication = options.Authenticator.Do();
-                if (!string.IsNullOrWhiteSpace(authentication.Error))
-                    return new LaunchResult
-                    {
-                        Success = false,
-                        ErrorType = ErrorType.AuthenticationFailed,
-                        ErrorMessage = "验证错误: " + authentication.Error
-                    };
-                args.CGCEnabled = true;
-                args.MainClass = options.Version.MainClass;
-                args.MaxMemory = options.MaxMemory;
-                args.MinMemory = options.MinMemory;
-                args.NativePath = GameRootPath + options.Version.Id + @"\\" + options.Version.Id + @"-natives";
-                foreach (var native in options.Version.Natives)
-                {
-                    var exp = ZipTools.UnzipFile(this.GetNativePath(native), args.NativePath, native.Options);
-                    if (exp == null)
-                    {
-                        continue;
-                    }
-                    return new LaunchResult
-                    {
-                        Success = false,
-                        ErrorType = ErrorType.UncompressingFailed,
-                        ErrorMessage = string.Format("解压错误: {0}:{1}:{2}", native.NS, native.Name, native.Version),
-                        Exception = exp
-                    };
-                }
-                args.Server = options.Server;
-                args.Size = options.Size;
-                args.Libraries = options.Version.Libraries.Select(this.GetLibPath).ToList();
-                args.Libraries.Add(this.GetVersionJarPath(options.Version.JarId));
-                args.MinecraftArguments = options.Version.MinecraftArguments;
-
-                args.Tokens.Add("auth_access_token", authentication.AccessToken.GoString());
-                args.Tokens.Add("auth_session", authentication.AccessToken.GoString());
-                args.Tokens.Add("auth_player_name", authentication.DisplayName);
-                args.Tokens.Add("version_name", options.Version.Id);
-                args.Tokens.Add("game_directory", ".");
-                args.Tokens.Add("game_assets", "assets");
-                args.Tokens.Add("assets_root", "assets");
-                args.Tokens.Add("assets_index_name", options.Version.Assets);
-                args.Tokens.Add("auth_uuid", authentication.UUID.GoString());
-                args.Tokens.Add("user_properties", authentication.Properties);
-                args.Tokens.Add("user_type", authentication.UserType);
-
-                args.AdvencedArguments = new List<string> { "-Dfml.ignoreInvalidMinecraftCertificates=true -Dfml.ignorePatchDiscrepancies=true" };
-
-                args.Authentication = authentication;
-                args.Version = options.Version;
-                if (options.Mode != null)
-                {
-                    options.Mode.Operate(this, args);
-                }
-                return null;
-            }
-            catch (Exception exp)
-            {
-                Console.WriteLine(exp.Message);
-                Console.WriteLine(exp.Source);
-                Console.WriteLine(exp.StackTrace);
-                return new LaunchResult { Success = false, ErrorType = ErrorType.Unknown, ErrorMessage = "在生成参数时发生了意外的错误", Exception = exp };
-            }
-        }
-
-        internal LaunchResult LaunchInternal(LaunchOptions options, params Action<MinecraftLaunchArguments>[] argumentsOperators)
-        {
-            lock (Locker)
-            {
-                if (!File.Exists(JavaPath))
-                {
-                    return new LaunchResult { Success = false, ErrorType = ErrorType.NoJAVA, ErrorMessage = "指定的JAVA位置不存在" };
-                }
-                CurrentCode = Random.Next();
-                var args = new MinecraftLaunchArguments();
-                var result = GenerateArguments(options, ref args);
-                if (result != null)
-                {
-                    return result;
-                }
-                if (argumentsOperators == null) return LaunchGame(args);
-                foreach (var opt in argumentsOperators)
-                {
-                    try
-                    {
-                        if (opt != null)
-                        {
-                            opt(args);
-                        }
-                    }
-                    catch (Exception exp)
-                    {
-                        return new LaunchResult { Success = false, ErrorType = ErrorType.OperatorException, ErrorMessage = "指定的操作器引发了异常", Exception = exp };
-                    }
-                }
-                return LaunchGame(args);
-            }
-        }
-
-        private LaunchResult LaunchGame(MinecraftLaunchArguments args)
-        {
-            Console.WriteLine(args.ToArguments());
-            try
-            {
-                var handle = new LaunchHandle(args.Authentication)
-                {
-                    Code = CurrentCode,
-                    Core = this,
-                    Arguments = args,
-                    Process = Process.Start(new ProcessStartInfo(JavaPath)
-                    {
-                        Arguments = args.ToArguments(),
-                        UseShellExecute = false,
-                        WorkingDirectory = GameRootPath,
-                        RedirectStandardError = true,
-                        RedirectStandardOutput = true
-                    })
-                };
-                handle.Work();
-                Task.Factory.StartNew(handle.Process.WaitForExit).ContinueWith(t => Exit(handle, handle.Process.ExitCode));
-                return new LaunchResult { Success = true, Handle = handle };
-            }
-            catch (Exception exp)
-            {
-                return new LaunchResult { Success = false, ErrorType = ErrorType.Unknown, ErrorMessage = "启动时出现了异常", Exception = exp };
-            }
-        }
-
-        #region 复制文件夹
-
-        public void CopyVersionDirectory(string directoryName, string versionId)
-        {
-            CopyDirectory(string.Format(@"{0}\versions\{2}\{1}", GameRootPath, directoryName, versionId),
-                string.Format(@"{0}\{1}", GameRootPath, directoryName));
-        }
-
-        public void CopyDirectory(string source, string target)
-        {
-            var code = CurrentCode;
-            if (!Directory.Exists(source)) return;
-            if (Directory.Exists(target))
-            {
-                Directory.Delete(target, true);
-            }
-            UsefulTools.Dircopy(source, target);
-            Action<LaunchHandle, int> handler = null;
-            handler = (handle, c) =>
-            {
-                if (handle.Code == code)
-                {
-                    Directory.Delete(source, true);
-                    UsefulTools.Dircopy(target, source);
-                    Directory.Delete(target, true);
-                }
-                GameExit -= handler;
-            };
-            GameExit += handler;
-        }
-
-        public void CopyVersionDirectories(string ver)
-        {
-            var root = string.Format(@"{0}\versions\{1}\moddir", GameRootPath, ver);
-            if (!Directory.Exists(root))
-            {
-                return;
-            }
-            foreach (var dir in new DirectoryInfo(root).EnumerateDirectories())
-            {
-                CopyDirectory(dir.FullName, string.Format(@"{0}\{1}", GameRootPath, dir.Name));
-            }
-        }
-
-        #endregion
-
-        #region 事件
-
-        internal void Log(LaunchHandle handle, string line)
-        {
-            if (GameLog != null)
-            {
-                GameLog(handle, line);
-            }
-        }
-
-        internal void Exit(LaunchHandle handle, int code)
-        {
-            if (GameExit != null)
-            {
-                GameExit(handle, code);
-            }
-        }
-
-        #endregion
-    }
+namespace KMCCC.Launcher
+{
+    #region
+
+    using System;
+    using System.Collections.Generic;
+    using System.Diagnostics;
+    using System.IO;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Tools;
+
+    #endregion
+
+    partial class LauncherCore
+    {
+        internal object Locker = new object();
+
+        private LaunchResult GenerateArguments(LaunchOptions options, ref MinecraftLaunchArguments args)
+        {
+            try
+            {
+                var authentication = options.Authenticator.Do();
+                if (!string.IsNullOrWhiteSpace(authentication.Error))
+                    return new LaunchResult
+                    {
+                        Success = false,
+                        ErrorType = ErrorType.AuthenticationFailed,
+                        ErrorMessage = "验证错误: " + authentication.Error
+                    };
+                args.CGCEnabled = true;
+                args.MainClass = options.Version.MainClass;
+                args.MaxMemory = options.MaxMemory;
+                args.MinMemory = options.MinMemory;
+                args.NativePath = GameRootPath + options.Version.Id + @"\\" + options.Version.Id + @"-natives";
+                foreach (var native in options.Version.Natives)
+                {
+                    var exp = ZipTools.UnzipFile(this.GetNativePath(native), args.NativePath, native.Options);
+                    if (exp == null)
+                    {
+                        continue;
+                    }
+                    return new LaunchResult
+                    {
+                        Success = false,
+                        ErrorType = ErrorType.UncompressingFailed,
+                        ErrorMessage = string.Format("解压错误: {0}:{1}:{2}", native.NS, native.Name, native.Version),
+                        Exception = exp
+                    };
+                }
+                args.Server = options.Server;
+                args.Size = options.Size;
+                args.Libraries = options.Version.Libraries.Select(this.GetLibPath).ToList();
+                args.Libraries.Add(this.GetVersionJarPath(options.Version.JarId));
+                args.MinecraftArguments = options.Version.MinecraftArguments;
+
+                args.Tokens.Add("auth_access_token", authentication.AccessToken.GoString());
+                args.Tokens.Add("auth_session", authentication.AccessToken.GoString());
+                args.Tokens.Add("auth_player_name", authentication.DisplayName);
+                args.Tokens.Add("version_name", options.Version.Id);
+                args.Tokens.Add("game_directory", ".");
+                args.Tokens.Add("game_assets", "assets");
+                args.Tokens.Add("assets_root", "assets");
+                args.Tokens.Add("assets_index_name", options.Version.Assets);
+                args.Tokens.Add("auth_uuid", authentication.UUID.GoString());
+                args.Tokens.Add("user_properties", authentication.Properties);
+                args.Tokens.Add("user_type", authentication.UserType);
+
+                args.AdvencedArguments = new List<string> { "-Dfml.ignoreInvalidMinecraftCertificates=true -Dfml.ignorePatchDiscrepancies=true" };
+
+                args.Authentication = authentication;
+                args.Version = options.Version;
+                if (options.Mode != null)
+                {
+                    options.Mode.Operate(this, args);
+                }
+                return null;
+            }
+            catch (Exception exp)
+            {
+                Console.WriteLine(exp.Message);
+                Console.WriteLine(exp.Source);
+                Console.WriteLine(exp.StackTrace);
+                return new LaunchResult { Success = false, ErrorType = ErrorType.Unknown, ErrorMessage = "在生成参数时发生了意外的错误", Exception = exp };
+            }
+        }
+
+        internal LaunchResult LaunchInternal(LaunchOptions options, params Action<MinecraftLaunchArguments>[] argumentsOperators)
+        {
+            lock (Locker)
+            {
+                if (!File.Exists(JavaPath))
+                {
+                    return new LaunchResult { Success = false, ErrorType = ErrorType.NoJAVA, ErrorMessage = "指定的JAVA位置不存在" };
+                }
+                CurrentCode = Random.Next();
+                var args = new MinecraftLaunchArguments();
+                var result = GenerateArguments(options, ref args);
+                if (result != null)
+                {
+                    return result;
+                }
+                if (argumentsOperators == null) return LaunchGame(args);
+                foreach (var opt in argumentsOperators)
+                {
+                    try
+                    {
+                        if (opt != null)
+                        {
+                            opt(args);
+                        }
+                    }
+                    catch (Exception exp)
+                    {
+                        return new LaunchResult { Success = false, ErrorType = ErrorType.OperatorException, ErrorMessage = "指定的操作器引发了异常", Exception = exp };
+                    }
+                }
+                return LaunchGame(args);
+            }
+        }
+
+        private LaunchResult LaunchGame(MinecraftLaunchArguments args)
+        {
+            Console.WriteLine(args.ToArguments());
+            try
+            {
+                var handle = new LaunchHandle(args.Authentication)
+                {
+                    Code = CurrentCode,
+                    Core = this,
+                    Arguments = args,
+                    Process = Process.Start(new ProcessStartInfo(JavaPath)
+                    {
+                        Arguments = args.ToArguments(),
+                        UseShellExecute = false,
+                        WorkingDirectory = GameRootPath,
+                        RedirectStandardError = true,
+                        RedirectStandardOutput = true
+                    })
+                };
+                handle.Work();
+                Task.Factory.StartNew(handle.Process.WaitForExit).ContinueWith(t => Exit(handle, handle.Process.ExitCode));
+                return new LaunchResult { Success = true, Handle = handle };
+            }
+            catch (Exception exp)
+            {
+                return new LaunchResult { Success = false, ErrorType = ErrorType.Unknown, ErrorMessage = "启动时出现了异常", Exception = exp };
+            }
+        }
+
+        #region 复制文件夹
+
+        public void CopyVersionDirectory(string directoryName, string versionId)
+        {
+            CopyDirectory(string.Format(@"{0}\versions\{2}\{1}", GameRootPath, directoryName, versionId),
+                string.Format(@"{0}\{1}", GameRootPath, directoryName));
+        }
+
+        public void CopyDirectory(string source, string target)
+        {
+            var code = CurrentCode;
+            if (!Directory.Exists(source)) return;
+            if (Directory.Exists(target))
+            {
+                Directory.Delete(target, true);
+            }
+            UsefulTools.Dircopy(source, target);
+            Action<LaunchHandle, int> handler = null;
+            handler = (handle, c) =>
+            {
+                if (handle.Code == code)
+                {
+                    Directory.Delete(source, true);
+                    UsefulTools.Dircopy(target, source);
+                    Directory.Delete(target, true);
+                }
+                GameExit -= handler;
+            };
+            GameExit += handler;
+        }
+
+        public void CopyVersionDirectories(string ver)
+        {
+            var root = string.Format(@"{0}\versions\{1}\moddir", GameRootPath, ver);
+            if (!Directory.Exists(root))
+            {
+                return;
+            }
+            foreach (var dir in new DirectoryInfo(root).EnumerateDirectories())
+            {
+                CopyDirectory(dir.FullName, string.Format(@"{0}\{1}", GameRootPath, dir.Name));
+            }
+        }
+
+        #endregion
+
+        #region 事件
+
+        internal void Log(LaunchHandle handle, string line)
+        {
+            if (GameLog != null)
+            {
+                GameLog(handle, line);
+            }
+        }
+
+        internal void Exit(LaunchHandle handle, int code)
+        {
+            if (GameExit != null)
+            {
+                GameExit(handle, code);
+            }
+        }
+
+        #endregion
+    }
 }
\ No newline at end of file
diff --git a/KMCCC.Shared/Tools/UsefulTools.cs b/KMCCC.Shared/Tools/UsefulTools.cs
index ae17646..ab7b575 100644
--- a/KMCCC.Shared/Tools/UsefulTools.cs
+++ b/KMCCC.Shared/Tools/UsefulTools.cs
@@ -19,8 +19,10 @@
 			return dic.Aggregate(source, (current, pair) => current.Replace("${" + pair.Key + "}", pair.Value));
 		}
 
-		public static string GoString(this Guid guid)
+		public static string GoString(this Guid? guid)
 		{
+            if (guid == null)
+                return "{}";
 			return guid.ToString().Replace("-", "");
 		}