Question

I’d like to avoid casting a delegate every time I call MarkAsPermanent method.

Here’s my delegate declaration:

public delegate void Callback<T, U>(T arg1, U arg2);

The method signature I need to call:

class MessengerManager {
    static public void MarkAsPermanent(string eventType, Delegate _messageHandler) { ... }
}

The way I call it right now:

MessengerManager.MarkAsPermanent( "level finished", ( Callback<LevelInfo, GameDataType> ) UpdateData );

Is it possible to do something like this instead:

MessengerManager.MarkAsPermanent( "level finished", UpdateData );

I’d like to avoid typing ( Callback<LevelInfo, GameDataType> ) everytime.

Answer 1

One obvious answer: write a helper method:

public static class LevelMessengerManager
{
    public static void MarkAsPermanent(string eventType,
        Callback<LevelInfo, GameDataType> messageHandler)
    {
        MessengerManager.MarkAsPermanent(eventType, messageHandler);
    }
}

You can make it generic if you want. Then just call it as:

LevelMessengerManager.MarkAsPermanent("level finished", UpdateData);

This is assuming that MessengerManager‘s declaration really has to use the Delegate parameter – can you just change that method instead?