That makes sense. With the order reversed, the "$" property ends up being set to a one-parameter delegate. The second call in your script invokes it with two arguments, which is OK, but the first argument is a string that's assumed to be a script function. When the event is raised, an attempt is made to invoke the string, which understandably fails.
The bottom line is that a JavaScript property can't have two values. However, you can create a single delegate that supports both calling patterns:
Good luck!
The bottom line is that a JavaScript property can't have two values. However, you can create a single delegate that supports both calling patterns:
publicdelegatevoid DollarSignFunc(object arg1, object arg2 = null); ... engine.AddHostObject("$", new DollarSignFunc((arg1, arg2) => { var name = arg1 asstring; if (name == null) new Window(f).AddEventHandler("Load", arg1); elsenew Window(f).AddEventHandler(name, arg2); }));
