WPF MessageBox looks unstyled, while WindowsForms MessageBox looks good
This issue can be fixed by adding an application manifest (Add -> New Item -> Application Manifest File)
...</trustInfo><dependency> <dependentAssembly> <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*" /> </dependentAssembly></dependency>Under "Project Properties", point "Manifest" to the file you just created. This is optional for that the manifest can also just be deployed along with the EXE file.
Note: This manifest can be used for any executable, not only WPF, that needs to be "styled".