C#

#IfWinActive ahk_class CabinetWClass
^d::
Run "C:\myapp.exe"
return
#IfWinActive  ; turn off context sensitivity

public interface ISomeInterface
{
   int SomeInt { set; get; }
}

public class SomeClass<T> : ISomeInterface
{
   public int SomeInt { set; get; }

   public T SomeT { set; get; }

   public SomeClass(int anint, T somet = default(T))
   {
      SomeInt = anint;
      SomeT = somet;
   }
}

List<ISomeInterface> someInstances = new List<ISomeInterface>();

someInstances.Add(new SomeClass<int>(100, 200));
someInstances.Add(new SomeClass<string>(200, "whoop de doo"));

ISomeInterface reference = someInstances[1];

Type t = reference.GetType().GenericTypeArguments[0];

if (t == typeof(string))
{
    var refAsString = reference as SomeClass<string>;

    string whoopee = refAsString.SomeT;  // => "whoop de doo"
} 

public interface ISomeInterface
{
   int SomeInt { set; get; }
   Type ThisType { set; get; }
}

public SomeClass(int anint, T somet = default(T))
{
   SomeInt = anint;
   SomeT = somet;
   ThisType = typeof(T);
}

if (someClassInstance.ThisType == typeof(SomeComplexClass))
{
    var nativeTypedSomeClass = someClassInstance as SomeClass<SomeComplexClass>;
}