diff --git a/TH-NETII Windows API.sln b/TH-NETII Windows API.sln
index e7d55f97..d8dae17b 100644
--- a/TH-NETII Windows API.sln	
+++ b/TH-NETII Windows API.sln	
@@ -103,6 +103,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "THNETII.WinApi.Headers.WinN
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "THNETII.WinApi.Constants.WinNls", "src-native\THNETII.WinApi.Constants.WinNls\THNETII.WinApi.Constants.WinNls.csproj", "{D6A0D437-AB43-4F6E-8064-6C41CD24F6F7}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "THNETII.WinApi.Headers.StringApiSet", "src-native\THNETII.WinApi.Headers.StringApiSet\THNETII.WinApi.Headers.StringApiSet.csproj", "{7F816318-2A55-45C3-9B44-D7E995B35B7E}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -545,6 +547,18 @@ Global
 		{D6A0D437-AB43-4F6E-8064-6C41CD24F6F7}.Release|x64.Build.0 = Release|Any CPU
 		{D6A0D437-AB43-4F6E-8064-6C41CD24F6F7}.Release|x86.ActiveCfg = Release|Any CPU
 		{D6A0D437-AB43-4F6E-8064-6C41CD24F6F7}.Release|x86.Build.0 = Release|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Debug|x64.Build.0 = Debug|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Debug|x86.Build.0 = Debug|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Release|x64.ActiveCfg = Release|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Release|x64.Build.0 = Release|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Release|x86.ActiveCfg = Release|Any CPU
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -587,6 +601,7 @@ Global
 		{8FA68C49-D060-4DE2-94A3-996320B314E2} = {9689DB3E-1ED7-478C-AC14-C734B0397619}
 		{E567A746-854C-434A-9E30-39AD10F39E06} = {9689DB3E-1ED7-478C-AC14-C734B0397619}
 		{D6A0D437-AB43-4F6E-8064-6C41CD24F6F7} = {9689DB3E-1ED7-478C-AC14-C734B0397619}
+		{7F816318-2A55-45C3-9B44-D7E995B35B7E} = {9689DB3E-1ED7-478C-AC14-C734B0397619}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {6EF7C9CF-E403-4B60-AB44-5F9FFEB668B7}
diff --git a/src-native/THNETII.WinApi.Headers.StringApiSet/THNETII.WinApi.Headers.StringApiSet.csproj b/src-native/THNETII.WinApi.Headers.StringApiSet/THNETII.WinApi.Headers.StringApiSet.csproj
new file mode 100644
index 00000000..a3d07d57
--- /dev/null
+++ b/src-native/THNETII.WinApi.Headers.StringApiSet/THNETII.WinApi.Headers.StringApiSet.csproj
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <LangVersion>8</LangVersion>
+    <TargetFrameworks>netstandard1.3;netstandard2.0</TargetFrameworks>
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <NoWarn>$(NoWarn);CS1591;CS0419</NoWarn>
+    <RootNamespace>THNETII.WinApi.Native.StringApiSet</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\THNETII.WinApi.Constants.WinNls\THNETII.WinApi.Constants.WinNls.csproj">
+      <PrivateAssets>All</PrivateAssets>
+    </ProjectReference>
+    <ProjectReference Include="..\THNETII.WinApi.Constants.WinError\THNETII.WinApi.Constants.WinError.csproj">
+      <PrivateAssets>All</PrivateAssets>
+    </ProjectReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\THNETII.WinApi.Headers.MinWinDef\THNETII.WinApi.Headers.MinWinDef.csproj">
+      <PrivateAssets>All</PrivateAssets>
+    </ProjectReference>
+    <ProjectReference Include="..\THNETII.WinApi.Headers.WinNls\THNETII.WinApi.Headers.WinNls.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src-shared\THNETII.WinApi.NativeLibraryNames\THNETII.WinApi.NativeLibraryNames.csproj">
+      <PrivateAssets>All</PrivateAssets>
+    </ProjectReference>
+    <ProjectReference Include="..\..\src-shared\THNETII.WinApi.Helpers\THNETII.WinApi.Helpers.csproj" />
+    <ProjectReference Include="..\..\src-shared\THNETII.WinApi.WindowsDataTypes\THNETII.WinApi.WindowsDataTypes.csproj" />
+  </ItemGroup>
+
+</Project>