Merge pull request #1 from Dirkster99/NetCore3

Net core3

Author: Dirkster99

appveyor.yml

@@ -0,0 +1,27 @@
+version: 1.5.{build}
+
+branches:
+  only:
+  - master
+  
+before_build:
+  - cmd: nuget restore source/MsgBoxDemo.sln
+
+build:
+  verbosity: minimal
+
+configuration: Release
+
+platform: Any CPU
+
+image: Visual Studio 2019 Preview
+
+install:
+  - cmd: choco install dotnetcore-sdk --pre
+
+artifacts:
+- path: source\MsgBoxDemo\bin\Release
+  name: MsgBoxDemo
+
+- path: source\MsgBox\bin\Release
+  name: MsgBox

source/MsgBox/AssemblyInfo.cs

@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]