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UWP FullTrustProcessLauncher gives "Element not found" exception on launch

I have a solution in visual studio containing a Windows Application Packaging Project, a UWP project, and a Console Application project. The UWP app contains a single button that when pressed is supposed to launch the console application as a fulltrust process. Solution Explorer looks like this:
The Windows Application Packaging project is set as the startup project. It's entry point is set to the UWP app. Both the UWP app and the console app are added to the packaging project as references.
Configuration manager looks like this:
The console app is set as a dependency for the UWP app. The dependencies for the UWP app looks like this:
The build order look like this:
Code
Here is the code for the console app:
using System;
using System.Diagnostics;
namespace ShellHost
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
}
}
As I mentioned the UWP app only has one page (MainPage.xaml) and it's code behind looks like this:
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using Windows.ApplicationModel;
namespace OnScreenDeviceManager
{
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
}
private async void button_Click(object sender, RoutedEventArgs e)
{
await FullTrustProcessLauncher.LaunchFullTrustProcessForAppAsync("Default");
}
}
}
The manifest for the UWP app is unmodified. The manifest for the Package has been modified to include fulltrust capability, and it contains the necessary extension for the fulltrust process. The xml file looks like this:
<?xml version="1.0" encoding="utf-8"?>
<Package
xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
IgnorableNamespaces="uap rescap desktop">
<Identity
Name="d3e964dc-9265-4243-b97c-2dacb7c11dac"
Publisher="CN=Dell"
Version="1.0.0.0" />
<Properties>
<DisplayName>Package</DisplayName>
<PublisherDisplayName>Dell</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="Package"
Description="Package"
BackgroundColor="transparent"
Square150x150Logo="Images\Square150x150Logo.png"
Square44x44Logo="Images\Square44x44Logo.png">
<uap:DefaultTile Wide310x150Logo="Images\Wide310x150Logo.png" />
<uap:SplashScreen Image="Images\SplashScreen.png" />
</uap:VisualElements>
<Extensions>
<desktop:Extension Category="windows.fullTrustProcess" Executable="ShellHost\ShellHost.exe">
<desktop:FullTrustProcess>
<desktop:ParameterGroup GroupId="SyncGroup" Parameters="/Sync"/>
<desktop:ParameterGroup GroupId="OtherGroup" Parameters="/Other"/>
<desktop:ParameterGroup GroupId="Default" Parameters=""/>
</desktop:FullTrustProcess>
</desktop:Extension>
</Extensions>
</Application>
</Applications>
<Capabilities>
<Capability Name="internetClient"/>
<rescap:Capability Name="runFullTrust" />
</Capabilities>
</Package>
The package/debug/bin folder where the solution exe resides looks like this:
You can clearly see the console app exe (ShellHost.exe) in the ShellHost folder.
The console app has been tested and works just fine. The UWP app works just fine except when I click the button I get an 'Element not found' exception.
Exception message says:
System.Exception: 'Element not found. (Exception from HRESULT: 0x80070490)'
This exception was originally thrown at this call stack:
[External Code]
OnScreenDeviceManager.MainPage.button_Click(object, Windows.UI.Xaml.RoutedEventArgs) in MainPage.xaml.cs
Can anyone help me solve this? What am I missing?

LaunchFullTrustProcessForAppAsync API means you need to launch the full-trust process with the specified application ID.
I suggest you try to use LaunchFullTrustProcessForCurrentAppAsync(String) API to replace your code.
private async void button_Click(object sender, RoutedEventArgs e)
{
await FullTrustProcessLauncher.LaunchFullTrustProcessForCurrentAppAsync("Default");
}

C# Class System.Data.SqlClient can not load file or assembly

How do I use the SqlClient directive with .NET Standard 2.0?
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.SqlClient;
Having great difficulty with Visual Studio at the minute, when I run my program I am greeted with the following exception:
System.IO.FileNotFoundException: 'Could not load file or assembly 'System.Data.SqlClient, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.'
Resulting in the application not running, the directive has been installed via NuGet and my class .csproj looks like:
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="System.Data.SqlClient" Version="4.5.1" />
</ItemGroup>
</Project>
The Form's framewwork is set to .NET framework 4.6.1...
I can not change the class framework to match, and I am not sure if this is causing the error?
The methods - that are causing the error - referenced from the Class:
//Connect to Database
public void Connection()
{
try
{
// Create SqlConnection
connString = "Data Source = xx; Initial Catalog = xx; User ID = xx; Password = xx";
con = new SqlConnection(connString);
con.Open();
}
catch (Exception ex)
{
string error;
error = ex.ToString();
}
}

Option 1) You might have already tried this.
Remove the reference & add it manually.
Option 2) Somehow System.Data.SqlClient dll is missing from your output or build folder
So, try adding post build script.
<Target Name="PostBuild" AfterTargets="PostBuildEvent">
<Exec Command="copy ..\..\..\packages\System.Data.SqlClient\runtimes\win\lib\netstandard2.0\System.Data.SqlClient.dll bin\Debug\appname\" Condition="'$(IsWindows)' == 'true'" />
<Exec Command="cp ../../../packages/System.Data.SqlClient/runtimes/unix/lib/netstandard2.0/System.Data.SqlClient.dll bin/Debug/appname/" Condition="'$(IsWindows)' != 'true'" />
</Target>

"Validation error. error C00CE014: App manifest validation error" when trying to create app packages for Windows Store

I'm struggling with this error for a few hours now. I can build and deploy the app without issues, it just won't create distributable packages (Project > Store > Create App Packages)
The problem is rather weird. Here's my Package.appxmanifest file:
<?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:uap3="http://schemas.microsoft.com/appx/manifest/uap/windows10/3" IgnorableNamespaces="uap mp uap3">
<Identity Name="481f1dca-fa19-4642-8e95-9208a4c9265f" Publisher="CN=mrrey" Version="1.1.8.0" />
<mp:PhoneIdentity PhoneProductId="06509575-8d8e-4beb-aa84-4ea390365781" PhonePublisherId="06509575-8d8e-4beb-aa84-4ea390365785" />
<Properties>
<DisplayName>XYZ MusicBox</DisplayName>
<PublisherDisplayName>mrrey</PublisherDisplayName>
<Logo>Assets\StoreLogo.png</Logo>
</Properties>
<Dependencies>
<TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.0.0" MaxVersionTested="10.0.0.0" />
</Dependencies>
<Resources>
<Resource Language="x-generate" />
</Resources>
<Applications>
<Application Id="App" Executable="$targetnametoken$.exe" EntryPoint="XYZ_MusicBox.App">
<uap:VisualElements DisplayName="XYZ MusicBox" Square150x150Logo="Assets\Square150x150Logo.png" Square44x44Logo="Assets\Square44x44Logo.png" Description="XYZ MusicBox" BackgroundColor="transparent">
<uap:DefaultTile Wide310x150Logo="Assets\Wide310x150Logo.png">
</uap:DefaultTile>
<uap:SplashScreen Image="Assets\SplashScreen.png" />
</uap:VisualElements>
</Application>
</Applications>
<Capabilities>
<Capability Name="internetClient" />
<uap:Capability Name="musicLibrary" />
<uap3:Capability Name="backgroundMediaPlayback" />
<DeviceCapability Name="microphone" />
</Capabilities>
</Package>
This is the initial state of my manifest. After I click Create in the wizard, it starts building the packages. The output:
...
1> 1018 ms Csc 2 calls
1> 1091 ms ResolveAssemblyReference 1 calls
1> 3498 ms CompileXaml 2 calls
1> 3615 ms GenerateAppxManifest 1 calls
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:11.30
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
========== Package: 0 succeeded, 1 failed ===========
========== App Bundle: 0 succeeded, 1 failed ===========
After that, when I try to open the Package.appxmanifest file the designer doesn't want to load due to the compiler error:
Severity Code Description Project File Line Suppression State
Error Validation error. error C00CE014: App manifest validation error: The app manifest must be valid as per schema: Line 34, Column 6, Reason: Element 'Capability' is unexpected according to content model of parent element '{http://schemas.microsoft.com/appx/manifest/foundation/windows10}Capabilities'. Expecting: {http://schemas.microsoft.com/appx/manifest/foundation/windows10}CapabilityChoice, {http://schemas.microsoft.com/appx/manifest/foundation/windows10}DeviceCapability. XYZ MusicBox C:\Users\mrrey\Box Sync\XYZ MusicBox\XYZ MusicBox\bin\x86\Debug\AppxManifest.xml
The weirdest part of it all is the fact that during creating the package VS is modifying my original appxmanifest file and adding this line to the capabilities:
<Capability Name="backgroundMediaPlayback" xmlns="" />
As you can see in the code above, I already have this capability added, but it requires a uap3: namespace to work correctly. For some reason it still forces this one, though. And what's with that xmlns attribute with an empty value?
After attempting packages creation I'm also getting a number of warnings like this one:
Severity Code Description Project File Line Suppression State
Warning Imported schema for namespace 'http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities/3' was not resolved. XYZ MusicBox C:\Users\mrrey\Box Sync\XYZ MusicBox\XYZ MusicBox\Package.appxmanifest 17
Everything works correctly when I remove the original Background Media Playback capability, but that's not something I can afford since it's a media player app.There's clearly something wrong with this capability/project's configuration but I can't find it.
This doesn't happen when I just build the solution and deploy the app to Local Machine/Device/Emulators.
I'm using up-to-date Visual Studio 2017 and Windows 10 (Version 10.0.14393 Build 14393).
Did anyone encounter a similar issue? Am I doing something wrong or is it a bug?
Thank you!
Edit: To make things even clearer: these short warnings (Imported schema for namespace...) are referring to <Applications>, <Application>, <Properties> and <Dependencies> tags.
Edit2: I don't even wanna think about this anymore. Somehow I broke it even more.

Spring.NET ObjectDefinitionStoreException using assembly to store configuration files

I am learning Spring.Net, I created a class MyApplication and a library class MyLib with all the spring configuration files that MyApplication needs.
I retrieve the metadata using:
IApplicationContext ctx = new XmlApplicationContext("assembly...");
I have three different xml files, one (springconfiguration.xml) imports the two other. At the beginning of my tries, my spring configuration files were at the root level of MyLib. Everything worked fine.
----- MyLib
-- Properties
-- References
-- commonspring.xml
-- buttonspring.xml
-- springconfiguration.xml
Then I created some folders in MyLib to store my xml files and it fails if I use subfolders:
the following works:
----- MyLib
--Properties
--References
--Common
--commonspring.xml
--Gui
--buttonspring.xml
--Configuration
--springconfiguration.xml
my springconfiguration.xml file is then:
<?xml version="1.0" encoding="utf-8" ?>
<objects xmlns="http://www.springframework.net">
<import resource="Common/commonspring.xml"/>
<import resource="Gui/buttonspring.xml"/>
</objects>
and I retrieve the context with:
IApplicationContext ctx = new XmlApplicationContext("assembly://MyLib/MyLib/Configuration.springconfiguration.xml");
but if I use subfolders then it fails:
----- MyLib
--Properties
--References
--Common
--commonspring.xml
--Gui
--SpecialButton
--buttonspring.xml
--Configuration
--springconfiguration.xml
my springconfiguration.xml file is then:
<?xml version="1.0" encoding="utf-8" ?>
<objects xmlns="http://www.springframework.net">
<import resource="Common/commonspring.xml"/>
<import resource="Gui/SpecialButton/buttonspring.xml"/>
</objects>
and I retrieve the context with:
IApplicationContext ctx = new XmlApplicationContext("assembly://MyLib/MyLib/Configuration.springconfiguration.xml");
The error is:
{"Error registering object defined in 'assembly [MyLib, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null], resource [MyLib.Configuration.springconfiguration.xml] at line 5' : Invalid relative resource location 'Gui/SpecialButton/buttonspring.xml' to import object definitions from.\r\n<import resource=\"Gui/SpecialButton/buttonspring.xml\" xmlns=\"http://www.springframework.net\" />"}
I tried several syntaxes, I looked in the documentation and did not find any solution. Has someone an idee of where is the problem?
Update
ok I found by myself: the correct syntaxe is:
<import resource="Gui.SpecialButton.buttonspring.xml"/>
then no errors are raised anymore and everything work fine.

To let everybody know here is the solution I found: in springconfiguration.xml instead of refering to the spring configuration file nested in folders as:
<import resource="Gui/SpecialButton/buttonspring.xml"/>
One has to write:
<import resource="Gui.SpecialButton.buttonspring.xml"/>
#marijn: thank you for your explanation, understanding a solution is better than just finding it ;)

How do I use regular expressions with Nant 0.91 calling a C#

In Nant 0.85 you could call C# scripts and it would import the System.Text.RegularExpressions namespace. Now in 0.91 that is no longer the case, and I can't seem to to import System.Text.RegularExpressions properly. I've tried adding the following
<imports>
<import namespace="System.Text.RegularExpressions" />
</imports>
And I see System.Text.RegularExpressions get added to a using statement, but I keep getting the error:
The type or namespace name 'RegularExpressions' does not exist in the
namespace 'System.Text' (are you missing an assembly reference?)

You need to add a reference to System.dll:
<references>
<include name="System.dll" />
</references>