diff --git a/PortProxyGUI - NET35/PortProxyGUI.cs b/PortProxyGUI - NET35/PortProxyGUI.cs
index e64333e..1652288 100644
--- a/PortProxyGUI - NET35/PortProxyGUI.cs	
+++ b/PortProxyGUI - NET35/PortProxyGUI.cs	
@@ -1,4 +1,4 @@
-using PortProxyGUI._extern.NStandard;
+using NStandard;
 using System;
 using System.Data;
 using System.Linq;
diff --git a/PortProxyGUI - NET35/SetProxyForm.cs b/PortProxyGUI - NET35/SetProxyForm.cs
index 0f44fe9..6158f4f 100644
--- a/PortProxyGUI - NET35/SetProxyForm.cs	
+++ b/PortProxyGUI - NET35/SetProxyForm.cs	
@@ -1,4 +1,4 @@
-using PortProxyGUI._extern.NStandard;
+using NStandard;
 using System;
 using System.Linq;
 using System.Text.RegularExpressions;
diff --git a/PortProxyGUI - NET45/PortProxyGUI - NET45.csproj b/PortProxyGUI - NET45/PortProxyGUI - NET45.csproj
index 87900e8..d894b95 100644
--- a/PortProxyGUI - NET45/PortProxyGUI - NET45.csproj	
+++ b/PortProxyGUI - NET45/PortProxyGUI - NET45.csproj	
@@ -12,6 +12,9 @@
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
     <IsWebBootstrapper>false</IsWebBootstrapper>
+    <TargetFrameworkProfile />
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
     <PublishUrl>publish\</PublishUrl>
     <Install>true</Install>
     <InstallFrom>Disk</InstallFrom>
@@ -27,9 +30,6 @@
     <UseApplicationTrust>false</UseApplicationTrust>
     <PublishWizardCompleted>true</PublishWizardCompleted>
     <BootstrapperEnabled>true</BootstrapperEnabled>
-    <TargetFrameworkProfile />
-    <NuGetPackageImportStamp>
-    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -174,11 +174,11 @@
   </ItemGroup>
   <Import Project="..\PortProxyGUI.Shared\PortProxyGUI.Shared.projitems" Label="Shared" />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Import Project="..\packages\Stub.System.Data.SQLite.Core.NetFramework.1.0.113.3\build\net45\Stub.System.Data.SQLite.Core.NetFramework.targets" Condition="Exists('..\packages\Stub.System.Data.SQLite.Core.NetFramework.1.0.113.3\build\net45\Stub.System.Data.SQLite.Core.NetFramework.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\packages\Stub.System.Data.SQLite.Core.NetFramework.1.0.113.3\build\net45\Stub.System.Data.SQLite.Core.NetFramework.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Stub.System.Data.SQLite.Core.NetFramework.1.0.113.3\build\net45\Stub.System.Data.SQLite.Core.NetFramework.targets'))" />
   </Target>
-  <Import Project="..\packages\Stub.System.Data.SQLite.Core.NetFramework.1.0.113.3\build\net45\Stub.System.Data.SQLite.Core.NetFramework.targets" Condition="Exists('..\packages\Stub.System.Data.SQLite.Core.NetFramework.1.0.113.3\build\net45\Stub.System.Data.SQLite.Core.NetFramework.targets')" />
 </Project>
\ No newline at end of file
diff --git a/PortProxyGUI - NET45/PortProxyGUI.cs b/PortProxyGUI - NET45/PortProxyGUI.cs
index e64333e..1652288 100644
--- a/PortProxyGUI - NET45/PortProxyGUI.cs	
+++ b/PortProxyGUI - NET45/PortProxyGUI.cs	
@@ -1,4 +1,4 @@
-using PortProxyGUI._extern.NStandard;
+using NStandard;
 using System;
 using System.Data;
 using System.Linq;
diff --git a/PortProxyGUI - NET45/SetProxyForm.cs b/PortProxyGUI - NET45/SetProxyForm.cs
index 0f44fe9..6158f4f 100644
--- a/PortProxyGUI - NET45/SetProxyForm.cs	
+++ b/PortProxyGUI - NET45/SetProxyForm.cs	
@@ -1,4 +1,4 @@
-using PortProxyGUI._extern.NStandard;
+using NStandard;
 using System;
 using System.Linq;
 using System.Text.RegularExpressions;
diff --git a/PortProxyGUI - NET45/app.config b/PortProxyGUI - NET45/app.config
index b3797c6..c81d505 100644
--- a/PortProxyGUI - NET45/app.config	
+++ b/PortProxyGUI - NET45/app.config	
@@ -1,17 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
-  <configSections>
-    
-    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
-  </configSections>
   <startup>
     <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
-  </startup>
-  <entityFramework>
-    <providers>
-      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
-      <provider invariantName="System.Data.SQLite.EF6" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />
-    </providers>
-  </entityFramework>
-  
+  </startup>  
 </configuration>
\ No newline at end of file
diff --git a/PortProxyGUI.Shared/CmdUtil.cs b/PortProxyGUI.Shared/CmdUtil.cs
index 7a0f3d0..0103fda 100644
--- a/PortProxyGUI.Shared/CmdUtil.cs
+++ b/PortProxyGUI.Shared/CmdUtil.cs
@@ -1,4 +1,4 @@
-using PortProxyGUI._extern.NStandard;
+using NStandard;
 using PortProxyGUI.Data;
 using System;
 using System.Linq;
@@ -22,7 +22,7 @@ namespace PortProxyGUI
             var proxies = types.SelectMany(type =>
             {
                 var typeProxies = output
-                    .Project(new Regex($@"{type.From}:[^\n]+?{type.To}:\r\n\r\n.+?\r\n--------------- ----------  --------------- ----------\r\n(.+?)\r\n\r\n", RegexOptions.Singleline))
+                    .ExtractFirst(new Regex($@"{type.From}:[^\n]+?{type.To}:\r\n\r\n.+?\r\n--------------- ----------  --------------- ----------\r\n(.+?)\r\n\r\n", RegexOptions.Singleline))
                     ?.Split(new[] { Environment.NewLine }, StringSplitOptions.None)
                     .Select(line =>
                     {
diff --git a/PortProxyGUI.Shared/PortProxyGUI.Shared.projitems b/PortProxyGUI.Shared/PortProxyGUI.Shared.projitems
index 2b9d8b6..4b76964 100644
--- a/PortProxyGUI.Shared/PortProxyGUI.Shared.projitems
+++ b/PortProxyGUI.Shared/PortProxyGUI.Shared.projitems
@@ -18,7 +18,5 @@
     <Compile Include="$(MSBuildThisFileDirectory)Data\Rule.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ListViewColumnSorter.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ProxyType.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)~extern\NStandard\XString.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)~extern\NStandard\XObject.cs" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/PortProxyGUI.Shared/~extern/NStandard/XObject.cs b/PortProxyGUI.Shared/~extern/NStandard/XObject.cs
deleted file mode 100644
index e023a6c..0000000
--- a/PortProxyGUI.Shared/~extern/NStandard/XObject.cs
+++ /dev/null
@@ -1,23 +0,0 @@
-using System;
-using System.ComponentModel;
-
-namespace PortProxyGUI._extern.NStandard
-{
-    [EditorBrowsable(EditorBrowsableState.Never)]
-    public static class XObject
-    {
-        /// <summary>
-        /// Do a task for itself, then return itself.
-        /// </summary>
-        /// <typeparam name="TSelf"></typeparam>
-        /// <param name="this"></param>
-        /// <param name="task"></param>
-        /// <returns></returns>
-        public static TSelf Then<TSelf>(this TSelf @this, Action<TSelf> task)
-        {
-            task(@this);
-            return @this;
-        }
-
-    }
-}
diff --git a/PortProxyGUI.Shared/~extern/NStandard/XString.cs b/PortProxyGUI.Shared/~extern/NStandard/XString.cs
deleted file mode 100644
index 3c05395..0000000
--- a/PortProxyGUI.Shared/~extern/NStandard/XString.cs
+++ /dev/null
@@ -1,74 +0,0 @@
-using System;
-using System.ComponentModel;
-using System.Linq;
-using System.Text.RegularExpressions;
-
-namespace PortProxyGUI._extern.NStandard
-{
-    [EditorBrowsable(EditorBrowsableState.Never)]
-    public static class XString
-    {
-        /// <summary>
-        /// Indicates whether the string matches the specified regular expression.
-        /// </summary>
-        /// <param name="this"></param>
-        /// <param name="regex"></param>
-        /// <returns></returns>
-        public static bool IsMatch(this string @this, Regex regex) => regex.Match(@this).Success;
-
-        /// <summary>
-        /// Projects the specified string to a new string by using regular expressions.
-        ///     If there is no match, this method returns null.
-        /// </summary>
-        /// <param name="this"></param>
-        /// <param name="regex"></param>
-        /// <param name="target"></param>
-        /// <returns></returns>
-        public static string Project(this string @this, Regex regex, string target = null)
-        {
-            var match = regex.Match(@this);
-            if (match.Success)
-            {
-                if (target is null)
-                    return string.Join("", match.Groups.OfType<Group>().Skip(1).Select(g => g.Value).ToArray());
-                else return regex.Replace(match.Groups[0].Value, target);
-            }
-            else return null;
-        }
-
-        /// <summary>
-        /// Projects the specified string to an array by using regular expressions.
-        /// </summary>
-        /// <param name="this"></param>
-        /// <param name="regex"></param>
-        /// <returns></returns>
-        public static string[][] Resolve(this string @this, Regex regex)
-        {
-            if (TryResolve(@this, regex, out var ret)) return ret;
-            else throw new ArgumentNullException("Can not match the sepecifed Regex.");
-        }
-
-        /// <summary>
-        /// Projects the specified string to an array by using regular expressions.
-        /// </summary>
-        /// <param name="this"></param>
-        /// <param name="regex"></param>
-        /// <returns></returns>
-        public static bool TryResolve(this string @this, Regex regex, out string[][] ret)
-        {
-            var match = regex.Match(@this);
-            if (match.Success)
-            {
-                ret = match.Groups.OfType<Group>()
-                    .Select(g => g.Captures.OfType<Capture>().Select(c => c.Value).ToArray()).ToArray();
-                return true;
-            }
-            else
-            {
-                ret = null;
-                return false;
-            }
-        }
-
-    }
-}
diff --git a/PortProxyGUI/PortProxyGUI.cs b/PortProxyGUI/PortProxyGUI.cs
index e64333e..1652288 100644
--- a/PortProxyGUI/PortProxyGUI.cs
+++ b/PortProxyGUI/PortProxyGUI.cs
@@ -1,4 +1,4 @@
-using PortProxyGUI._extern.NStandard;
+using NStandard;
 using System;
 using System.Data;
 using System.Linq;
diff --git a/PortProxyGUI/SetProxyForm.cs b/PortProxyGUI/SetProxyForm.cs
index 0f44fe9..6158f4f 100644
--- a/PortProxyGUI/SetProxyForm.cs
+++ b/PortProxyGUI/SetProxyForm.cs
@@ -1,4 +1,4 @@
-using PortProxyGUI._extern.NStandard;
+using NStandard;
 using System;
 using System.Linq;
 using System.Text.RegularExpressions;