Create MSIX package for WinForms Core app

windowsforms/MSIX-WindowsForms/CoreWinFormsApp1/CoreWinFormsApp1.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <RuntimeIdentifier>win-x86</RuntimeIdentifier>
+    <SelfContained>true</SelfContained>
+    <Platforms>AnyCPU;x86</Platforms>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <FrameworkReference Include="Microsoft.DesktopUI" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\WindowsFormsApp1\WindowsFormsApp1.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Folder Include="Properties\" />
+  </ItemGroup>
+
+  <Target Name="__GetPublishItems" DependsOnTargets="ComputeFilesToPublish" Returns="@(_PublishItem)">
+    <ItemGroup>
+      <_PublishItem Include="@(ResolvedFileToPublish->'%(FullPath)')" TargetPath="%(ResolvedFileToPublish.RelativePath)" OutputGroup="__GetPublishItems" />
+      <_PublishItem Include="$(ProjectDepsFilePath)" TargetPath="$(ProjectDepsFileName)" />
+      <_PublishItem Include="$(ProjectRuntimeConfigFilePath)" TargetPath="$(ProjectRuntimeConfigFileName)" />
+    </ItemGroup>
+  </Target>
+</Project>

windowsforms/MSIX-WindowsForms/CoreWinFormsApp1/Program.cs

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+using System;
+using System.Windows.Forms;
+
+namespace CoreWinFormsApp1
+{
+    class Program
+    {
+        [STAThread]
+        static void Main()
+
+        {
+            Application.EnableVisualStyles();
+            Application.SetCompatibleTextRenderingDefault(false);
+            Application.Run(new WindowsFormsApp1.Form1());
+
+        }
+    }
+}

windowsforms/MSIX-WindowsForms/MSIX-WindowsForms.sln

@@ -0,0 +1,60 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28010.2041
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WindowsFormsApp1", "WindowsFormsApp1\WindowsFormsApp1.csproj", "{F9E02CDA-E0B5-4E43-82EF-64EF405CB213}"
+EndProject
+Project("{C7167F0D-BC9F-4E6E-AFE1-012C56B48DB5}") = "WindowsFormsApp1.Package", "WindowsFormsApp1.Package\WindowsFormsApp1.Package.wapproj", "{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CoreWinFormsApp1", "CoreWinFormsApp1\CoreWinFormsApp1.csproj", "{BF70C62C-99B5-47C5-B527-A4AD1338723E}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{C3AFF30C-502F-4A5B-BF49-785A9F4C4089}"
+	ProjectSection(SolutionItems) = preProject
+		README.md = README.md
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{F9E02CDA-E0B5-4E43-82EF-64EF405CB213}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{F9E02CDA-E0B5-4E43-82EF-64EF405CB213}.Debug|x64.Build.0 = Debug|Any CPU
+		{F9E02CDA-E0B5-4E43-82EF-64EF405CB213}.Debug|x86.ActiveCfg = Debug|x86
+		{F9E02CDA-E0B5-4E43-82EF-64EF405CB213}.Debug|x86.Build.0 = Debug|x86
+		{F9E02CDA-E0B5-4E43-82EF-64EF405CB213}.Release|x64.ActiveCfg = Release|Any CPU
+		{F9E02CDA-E0B5-4E43-82EF-64EF405CB213}.Release|x64.Build.0 = Release|Any CPU
+		{F9E02CDA-E0B5-4E43-82EF-64EF405CB213}.Release|x86.ActiveCfg = Release|x86
+		{F9E02CDA-E0B5-4E43-82EF-64EF405CB213}.Release|x86.Build.0 = Release|x86
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Debug|x64.ActiveCfg = Debug|x64
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Debug|x64.Build.0 = Debug|x64
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Debug|x64.Deploy.0 = Debug|x64
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Debug|x86.ActiveCfg = Debug|x86
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Debug|x86.Build.0 = Debug|x86
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Debug|x86.Deploy.0 = Debug|x86
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Release|x64.ActiveCfg = Release|x64
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Release|x64.Build.0 = Release|x64
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Release|x64.Deploy.0 = Release|x64
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Release|x86.ActiveCfg = Release|x86
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Release|x86.Build.0 = Release|x86
+		{FA0D80AB-4FC9-40D6-AA5F-E50044ED2C5C}.Release|x86.Deploy.0 = Release|x86
+		{BF70C62C-99B5-47C5-B527-A4AD1338723E}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{BF70C62C-99B5-47C5-B527-A4AD1338723E}.Debug|x64.Build.0 = Debug|Any CPU
+		{BF70C62C-99B5-47C5-B527-A4AD1338723E}.Debug|x86.ActiveCfg = Debug|x86
+		{BF70C62C-99B5-47C5-B527-A4AD1338723E}.Debug|x86.Build.0 = Debug|x86
+		{BF70C62C-99B5-47C5-B527-A4AD1338723E}.Release|x64.ActiveCfg = Release|Any CPU
+		{BF70C62C-99B5-47C5-B527-A4AD1338723E}.Release|x64.Build.0 = Release|Any CPU
+		{BF70C62C-99B5-47C5-B527-A4AD1338723E}.Release|x86.ActiveCfg = Release|x86
+		{BF70C62C-99B5-47C5-B527-A4AD1338723E}.Release|x86.Build.0 = Release|x86
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {E34C6E40-45E2-459E-AF10-FE4E6D3319D3}
+	EndGlobalSection
+EndGlobal

windowsforms/MSIX-WindowsForms/README.md

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+# MSIX Windows Forms Core Application
+
+This sample shows how to use the Windows Packaging Project to package a WinForms application running on .NET Core 3.0.
+
+## Pre-requisites
+
+To use the Windows Packaging Project (wapproj) you need to install the Universal Windows workload in Visual Studio.
+
+To produce `MSIX` packages, you must have the **Windows 10 October 2018 SDK** (aka 10.0.17763): otherwise, the generated package will have the `APPX` extension.
+
+To install MSIX packages you need the **Windows 10 October 2018 Update**
+
+## Customize the Packaging Project
+
+Currently, the packaging project does not support .NET Core applications. As a workaround, we updated the project files to call the `publish` target to produce a self-contained app, and to fix the manifest entry point. 
+
+In the .NET Core csproj file add:
+
+```xml
+ <Target Name="__GetPublishItems" DependsOnTargets="ComputeFilesToPublish" Returns="@(_PublishItem)">
+    <ItemGroup>
+      <_PublishItem Include="@(ResolvedFileToPublish->'%(FullPath)')" TargetPath="%(ResolvedFileToPublish.RelativePath)" OutputGroup="__GetPublishItems" />
+      <_PublishItem Include="$(ProjectDepsFilePath)" TargetPath="$(ProjectDepsFileName)" />
+      <_PublishItem Include="$(ProjectRuntimeConfigFilePath)" TargetPath="$(ProjectRuntimeConfigFileName)" />
+    </ItemGroup>
+  </Target>
+```
+
+In the .wapproj file modify the `ProjectReference` element:
+```xml
+ <ItemGroup>
+    <ProjectReference Include="..\CoreWinFormsApp1\CoreWinFormsApp1.csproj" SkipGetTargetFrameworkProperties="true" Properties="RuntimeIdentifier=win-x86;SelfContained=true" />
+  </ItemGroup>
+```
+
+And add the targets:
+```xml
+  <PropertyGroup>
+    <PackageOutputGroups>@(PackageOutputGroups);__GetPublishItems</PackageOutputGroups>    
+  </PropertyGroup>
+
+  <Target Name="_ValidateAppReferenceItems" />
+  <Target Name="_FixEntryPoint" AfterTargets="_ConvertItems">
+    <PropertyGroup>
+      <EntryPointExe>CoreWinFormsApp1\CoreWinFormsApp1.exe</EntryPointExe>
+    </PropertyGroup>
+  </Target>
+  <Target Name="PublishReferences" BeforeTargets="ExpandProjectReferences">
+    <MSBuild Projects="@(ProjectReference->'%(FullPath)')" BuildInParallel="$(BuildInParallel)" Targets="Publish" />
+  </Target>
+```

windowsforms/MSIX-WindowsForms/WindowsFormsApp1.Package/.gitignore

@@ -0,0 +1 @@
+BundleArtifacts/

windowsforms/MSIX-WindowsForms/WindowsFormsApp1.Package/Package.appxmanifest

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+<?xml version="1.0" encoding="utf-8"?>
+<Package xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10" xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest" xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10" xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities" IgnorableNamespaces="uap mp rescap">
+  <Identity Name="WindowsFormsApp1.Package" Publisher="CN=rmpablos" Version="0.0.3.0" />
+  <Properties>
+    <DisplayName>WindowsFormsApp1 MSIX Sample</DisplayName>
+    <PublisherDisplayName>rmpablos</PublisherDisplayName>
+    <Logo>Images\StoreLogo.png</Logo>
+  </Properties>
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.0.0" MaxVersionTested="10.0.0.0" />
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.14393.0" MaxVersionTested="10.0.14393.0" />
+  </Dependencies>
+  <Resources>
+    <Resource Language="x-generate" />
+  </Resources>
+  <Applications>
+    <Application Id="App"  Executable="$targetnametoken$.exe" EntryPoint="$targetentrypoint$">
+      <uap:VisualElements DisplayName="WindowsFormsApp1" Description="WindowsFormsApp1 MSIX Sample" BackgroundColor="transparent" Square150x150Logo="Images\Square150x150Logo.png" Square44x44Logo="Images\Square44x44Logo.png">
+        <uap:DefaultTile Wide310x150Logo="Images\Wide310x150Logo.png" Square310x310Logo="Images\LargeTile.png" Square71x71Logo="Images\SmallTile.png">
+        </uap:DefaultTile>
+        <uap:SplashScreen Image="Images\SplashScreen.png" />
+      </uap:VisualElements>
+    </Application>
+  </Applications>
+  <Capabilities>
+    <Capability Name="internetClient" />
+    <rescap:Capability Name="runFullTrust" />
+  </Capabilities>
+</Package>

windowsforms/MSIX-WindowsForms/WindowsFormsApp1.Package/WindowsFormsApp1.Package.wapproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '15.0'">
+    <VisualStudioVersion>15.0</VisualStudioVersion>
+  </PropertyGroup>
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|x86">
+      <Configuration>Debug</Configuration>
+      <Platform>x86</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x86">
+      <Configuration>Release</Configuration>
+      <Platform>x86</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|AnyCPU">
+      <Configuration>Debug</Configuration>
+      <Platform>AnyCPU</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|AnyCPU">
+      <Configuration>Release</Configuration>
+      <Platform>AnyCPU</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup>
+    <WapProjPath Condition="'$(WapProjPath)'==''">$(MSBuildExtensionsPath)\Microsoft\DesktopBridge\</WapProjPath>
+  </PropertyGroup>
+  <Import Project="$(WapProjPath)\Microsoft.DesktopBridge.props" />
+  <PropertyGroup>
+    <ProjectGuid>fa0d80ab-4fc9-40d6-aa5f-e50044ed2c5c</ProjectGuid>
+    <TargetPlatformVersion>10.0.17763.0</TargetPlatformVersion>
+    <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <PackageCertificateKeyFile>WindowsFormsApp1.Package_TemporaryKey.pfx</PackageCertificateKeyFile>
+    <GenerateAppInstallerFile>false</GenerateAppInstallerFile>
+    <AppxAutoIncrementPackageRevision>false</AppxAutoIncrementPackageRevision>    
+    <EntryPointProjectUniqueName>..\CoreWinFormsApp1\CoreWinFormsApp1.csproj</EntryPointProjectUniqueName>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <AppxBundle>Never</AppxBundle>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <AppxBundle>Never</AppxBundle>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
+    <AppxBundle>Never</AppxBundle>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <AppxBundle>Never</AppxBundle>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x86'">
+    <AppxBundle>Never</AppxBundle>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x86'">
+    <AppxBundle>Never</AppxBundle>
+  </PropertyGroup>
+  <ItemGroup>
+    <AppxManifest Include="Package.appxmanifest">
+      <SubType>Designer</SubType>
+    </AppxManifest>
+    <None Include="WindowsFormsApp1.Package_TemporaryKey.pfx" />
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="Images\*" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\CoreWinFormsApp1\CoreWinFormsApp1.csproj" SkipGetTargetFrameworkProperties="true" Properties="RuntimeIdentifier=win-x86;SelfContained=true" />
+  </ItemGroup>
+  <Import Project="$(WapProjPath)\Microsoft.DesktopBridge.targets" />
+  <PropertyGroup>
+    <PackageOutputGroups>@(PackageOutputGroups);__GetPublishItems</PackageOutputGroups>    
+  </PropertyGroup>
+  <Target Name="_ValidateAppReferenceItems" />
+  <Target Name="_FixEntryPoint" AfterTargets="_ConvertItems">
+    <PropertyGroup>
+      <EntryPointExe>CoreWinFormsApp1\CoreWinFormsApp1.exe</EntryPointExe>
+    </PropertyGroup>
+  </Target>
+  <Target Name="PublishReferences" BeforeTargets="ExpandProjectReferences">
+    <MSBuild Projects="@(ProjectReference->'%(FullPath)')" BuildInParallel="$(BuildInParallel)" Targets="Publish" />
+  </Target>
+  <PropertyGroup>
+    <DebuggerType>CoreClr</DebuggerType>
+  </PropertyGroup>
+</Project>

windowsforms/MSIX-WindowsForms/WindowsFormsApp1/App.config

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
+    </startup>
+</configuration>