diff --git a/src/Net_40/HandyControlDemo_Net_40/HandyControlDemo_Net_40.csproj b/src/Net_40/HandyControlDemo_Net_40/HandyControlDemo_Net_40.csproj
index 636d9e3e..cda33961 100644
--- a/src/Net_40/HandyControlDemo_Net_40/HandyControlDemo_Net_40.csproj
+++ b/src/Net_40/HandyControlDemo_Net_40/HandyControlDemo_Net_40.csproj
@@ -577,5 +577,10 @@
       move tr Langs
       move ca-Es Langs
     </PostBuildEvent>
+    <Copyright>Copyright © HandyOrg 2018-2021</Copyright>
+    <AssemblyVersion>3.1.0.0</AssemblyVersion>
+    <FileVersion>3.1.0.0</FileVersion>
+    <Version>3.1.0.0</Version>
+    <RepositoryUrl>https://github.com/HandyOrg/HandyControl</RepositoryUrl>
   </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/src/Net_40/HandyControl_Net_40/HandyControl_Net_40.csproj b/src/Net_40/HandyControl_Net_40/HandyControl_Net_40.csproj
index 553d2060..a125d110 100644
--- a/src/Net_40/HandyControl_Net_40/HandyControl_Net_40.csproj
+++ b/src/Net_40/HandyControl_Net_40/HandyControl_Net_40.csproj
@@ -9,6 +9,13 @@
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
     <NoWarn>0067;0649;1591;0108;1717</NoWarn>
     <UseWPF>true</UseWPF>
+    <SignAssembly>true</SignAssembly>
+    <AssemblyOriginatorKeyFile>..\..\Shared\HandyControl_Shared\key.snk</AssemblyOriginatorKeyFile>
+    <Copyright>Copyright © HandyOrg 2018-2021</Copyright>
+    <AssemblyVersion>3.1.0.0</AssemblyVersion>
+    <FileVersion>3.1.0.0</FileVersion>
+    <Version>3.1.0.0</Version>
+    <RepositoryUrl>https://github.com/HandyOrg/HandyControl</RepositoryUrl>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release-Net40|AnyCPU' ">
     <DocumentationFile>bin\$(Configuration)\$(TargetFramework)\HandyControl.xml</DocumentationFile>
diff --git a/src/Net_GE45/HandyControlDemo_Net_GE45/HandyControlDemo_Net_GE45.csproj b/src/Net_GE45/HandyControlDemo_Net_GE45/HandyControlDemo_Net_GE45.csproj
index 0f7d2cb0..3a2b0b16 100644
--- a/src/Net_GE45/HandyControlDemo_Net_GE45/HandyControlDemo_Net_GE45.csproj
+++ b/src/Net_GE45/HandyControlDemo_Net_GE45/HandyControlDemo_Net_GE45.csproj
@@ -8,6 +8,11 @@
     <NoWarn>0108;MSB3026;MSB3061</NoWarn>
     <MSBuildWarningsAsMessages>NETSDK1138</MSBuildWarningsAsMessages>
     <UseWPF>true</UseWPF>
+    <Copyright>Copyright © HandyOrg 2018-2021</Copyright>
+    <AssemblyVersion>3.1.0.0</AssemblyVersion>
+    <FileVersion>3.1.0.0</FileVersion>
+    <Version>3.1.0.0</Version>
+    <RepositoryUrl>https://github.com/HandyOrg/HandyControl</RepositoryUrl>
   </PropertyGroup>
   <ItemGroup Condition="$(TargetFramework.StartsWith('net4'))">
     <Reference Include="Microsoft.CSharp" />
diff --git a/src/Net_GE45/HandyControl_Net_GE45/HandyControl_Net_GE45.csproj b/src/Net_GE45/HandyControl_Net_GE45/HandyControl_Net_GE45.csproj
index 9b2a000e..057a458a 100644
--- a/src/Net_GE45/HandyControl_Net_GE45/HandyControl_Net_GE45.csproj
+++ b/src/Net_GE45/HandyControl_Net_GE45/HandyControl_Net_GE45.csproj
@@ -10,6 +10,13 @@
     <NoWarn>0067;0649;1591;MSB3061;SYSLIB0003;SYSLIB0004</NoWarn>
     <MSBuildWarningsAsMessages>NETSDK1138</MSBuildWarningsAsMessages>
     <UseWPF>true</UseWPF>
+    <SignAssembly>true</SignAssembly>
+    <AssemblyOriginatorKeyFile>..\..\Shared\HandyControl_Shared\key.snk</AssemblyOriginatorKeyFile>
+    <Copyright>Copyright © HandyOrg 2018-2021</Copyright>
+    <AssemblyVersion>3.1.0.0</AssemblyVersion>
+    <FileVersion>3.1.0.0</FileVersion>
+    <Version>3.1.0.0</Version>
+    <RepositoryUrl>https://github.com/HandyOrg/HandyControl</RepositoryUrl>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DocumentationFile>bin\$(Configuration)\$(TargetFramework)\HandyControl.xml</DocumentationFile>
diff --git a/src/Shared/HandyControlDemo_Code/HandyControlDemo_Code.csproj b/src/Shared/HandyControlDemo_Code/HandyControlDemo_Code.csproj
index 289d5b9c..f0213599 100644
--- a/src/Shared/HandyControlDemo_Code/HandyControlDemo_Code.csproj
+++ b/src/Shared/HandyControlDemo_Code/HandyControlDemo_Code.csproj
@@ -6,6 +6,11 @@
     <TargetFrameworks>netcoreapp3.0;netcoreapp3.1;net40;net45;net462;net47;net48;net5.0-windows</TargetFrameworks>
     <NoWarn>MSB3026;MSB3061</NoWarn>
     <MSBuildWarningsAsMessages>NETSDK1138</MSBuildWarningsAsMessages>
+    <Version>3.1.0.0</Version>
+    <Copyright>Copyright © HandyOrg 2018-2021</Copyright>
+    <RepositoryUrl>https://github.com/HandyOrg/HandyControl</RepositoryUrl>
+    <AssemblyVersion>3.1.0.0</AssemblyVersion>
+    <FileVersion>3.1.0.0</FileVersion>
   </PropertyGroup>
   <ItemGroup>
     <Resource Include="..\..\Shared\HandyControlDemo_Shared\Window\AboutWindow.xaml">
diff --git a/src/Shared/HandyControl_Shared/key.snk b/src/Shared/HandyControl_Shared/key.snk
new file mode 100644
index 00000000..32c3419b
Binary files /dev/null and b/src/Shared/HandyControl_Shared/key.snk differ