Unloading Child AppDomain kills Parent

Question

I am trying to figure out AppDomains.

I use following code to run the current application once more in a new child AppDomain with an argument:

    AppDomain domain = AppDomain.CreateDomain("NewAppDomain", null);
    domain.ExecuteAssemblyByName(currentAssembly.FullName, "argument");

It works fine, however, when I try to unload it via AppDomain.Unload(domain); , it also kills Parent it was called from.

In the debug output I can see following errors:

Exception thrown: 'System.Threading.ThreadAbortException' in mscorlib.dll
Exception thrown: 'System.Threading.ThreadAbortException' in mscorlib.dll
Exception thrown: 'System.Threading.ThreadAbortException' in TestAppDomain.exe
Exception thrown: 'System.Threading.ThreadAbortException' in System.Windows.Forms.dll
Exception thrown: 'System.AppDomainUnloadedException' in TestAppDomain.exe

I am not sure what is the issue here, how can I correctly unload such child AppDomain without killing Parent?

Answer 1

Main thread was not stopped completely before I tried to unload the AppDomain. Stopping it correctly fixed the error.