using System;
using System.Linq;
using System.Threading;

static class Extensions
{
	public static Delegate ConvertTo(this Delegate self, Type type)
	{
		if (type == null) { throw new ArgumentNullException("type"); }
		if (self == null) { return null; }
		
		return Delegate.Combine(
			self.GetInvocationList()
				.Select(i => Delegate.CreateDelegate(type, i.Target, i.Method))
				.ToArray());
	}
}

class Program
{
	static void Main()
	{
		Action x = delegate { };
		x += new Action(delegate { });
		
		ThreadStart badCopy = new ThreadStart(x);
		ThreadStart goodCopy = (ThreadStart)x.ConvertTo(typeof(ThreadStart));
		
		Console.WriteLine("x == badCopy: {0}", x.Equals(badCopy));
		Console.WriteLine("x == goodCopy: {0}", x.Equals(goodCopy));
	}
}