1public class Catch
2{
3    public static Exception Exception(Action context)
4    {
5        try
6        {
7            context();
8        }
9        catch (Exception thrownException)
10        {
11            return thrownException;
12        }
13
14        return null;
15    }
16}

Exception exception = Catch.Exception(() => [A action that will cause a eception]);
exception.ShouldBeOfType<[Some Specific Exception]>();