Here’s my latest article that discusses a simple utility class that lets you queue up delegates and then execute them at a later time in a first-in first-out order. I wrote this when I had a situation where I was doing some rather complex processing based on property changed event notifications, and I found that some of the earlier notifications were going unhandled because the processing code had not completed a stable initialization at that point. So I queued up my various event handlers and then invoked them once I was sure it was safe to do so. Other uses I can think of include using this class as a macro recorder – just queue up all your mouse and keyboard actions, and invoke them during playback.
Article : Delayed Delegate Invoker
You can solve the dissimilar arguments problem better by having the user of your class use closures and anonymous methods.
Instead of taking Delegate, you could take a delegate of type delegate void Action(), and it can be used like
delayedInvoker.Add(()=> this.Add(text));
This way, there is no possibility of runtime errors because of argument mismatch, and it looks cleaner IMO.