How do I create an application domain and run my application in it?

Question

I need to create a custom application domain to work around a bug in the .NET runtime's default behavior. None of the sample code I've seen online is helpful since I don't know where to place it, or what it needs to replace within my Main() method.

Answer 1

It should probably be noted that creating AppDomains just to get around something that can be fixed with a constant string is probably the wrong way to do it. If you are trying to do the same thing as the link you noted, you could just do this:

var configFile = Assembly.GetExecutingAssembly().Location + ".config"; if (!File.Exists(configFile))     throw new Exception("do your worst!"); 

Recursive Entry Point :o)

static void Main(string[] args) {     if (AppDomain.CurrentDomain.IsDefaultAppDomain())     {         Console.WriteLine(AppDomain.CurrentDomain.FriendlyName);          var currentAssembly = Assembly.GetExecutingAssembly();         var otherDomain = AppDomain.CreateDomain("other domain");         var ret = otherDomain.ExecuteAssemblyByName(currentAssembly.FullName, args);          Environment.ExitCode = ret;         return;     }      Console.WriteLine(AppDomain.CurrentDomain.FriendlyName);     Console.WriteLine("Hello"); } 

Quick sample using a nonstatic secondary entry point and MarshalByRefObject...

class Program {     static AppDomain otherDomain;      static void Main(string[] args)     {         otherDomain = AppDomain.CreateDomain("other domain");          var otherType = typeof(OtherProgram);         var obj = otherDomain.CreateInstanceAndUnwrap(                                  otherType.Assembly.FullName,                                  otherType.FullName) as OtherProgram;          args = new[] { "hello", "world" };         Console.WriteLine(AppDomain.CurrentDomain.FriendlyName);         obj.Main(args);     } }  public class OtherProgram : MarshalByRefObject {     public void Main(string[] args)     {         Console.WriteLine(AppDomain.CurrentDomain.FriendlyName);         foreach (var item in args)             Console.WriteLine(item);     } }