意外的“非泛型类型不能与类型参数一起使用”？

Question

I have the following hierarchy of classes:

public abstract class SerializedDelegateBase<TDelegate, TTarget>
    where TDelegate : class
    where TTarget : class
{
   ...
}

public abstract class SerializedMBDelegateBase<TDelegate> : SerializedDelegateBase<TDelegate, MonoBehaviour> where TDelegate : class
{
   ...
}

public class ParameterizedSerializedDelegate<T> : SerializedMBDelegateBase<Action<T>> where T : EventArgs
{
   ...
}

And finally:

[Serializable]
public class OnTransitionArg : EventArgs
{
    public string TransitionName { set; get; }
}

[Serializable]
public class OnTransitionDelegate : ParameterizedSerializedDelegate<OnTransitionArg> { }

Now for some strange reason, I'm getting "The non-generic type 'ParameterizedSerializedDelegate' cannot be used with type arguments" on my OnTransitionDelegate when I'm inheriting from ParameterizedSerializedDelegate

I have no idea why.

Anybody?

Thanks!

EDIT:

I should probably mention that the classes are in different files. I just tried a minimal but similar setup in terms of the generic arguments in one file, it worked! - I don't know what's different about my real setup...

Answer 1

看来我正在编辑ParameterizedSerializedDelegate文件的“另一个”版本-因此VS所查看的是不同的。

Answer 2

@vexe's solution worked for me but I worked out what I did to reproduce it (explanation will use original question type names).

In VS2013, this can happen when you are using the CTRL-. shortcut menu and not paying attention. Rather than choosing "Add << namespace >>", it is possible to select "Generate class for...", which will create a new stub class called ParameterizedSerializedDelegate in the same folder as OnTransitionDelegate .

What is confusing is that if you hit F12 (go to definition) on ParameterizedSerializedDelegate in the example above, it will find the generic version of it and take you there - even if the namespace is not available in that file.