Provides support for converting objects to delegates using the DLR binders available by the provided language context. Primarily this supports converting objects implementing IDynamicMetaObjectProvider to the appropriate delegate type. If the provided object is already a delegate of the appropriate type then the delegate will simply be returned.
Документация по классу DynamicDelegateCreator
Пример #1
0
        public void AddHandler(object target, object handler, DynamicDelegateCreator delegateCreator) {
            ContractUtils.RequiresNotNull(handler, "handler");
            ContractUtils.RequiresNotNull(delegateCreator, "delegateCreator");

            Delegate delegateHandler;
            HandlerList stubs;

            // we can add event directly (signature does match):
            if (_eventInfo.EventHandlerType.IsAssignableFrom(handler.GetType())) {
                delegateHandler = (Delegate)handler;
                stubs = null;
            } else {
                // create signature converting stub:
                delegateHandler = delegateCreator.GetDelegate(handler, _eventInfo.EventHandlerType);
                stubs = GetHandlerList(target);
            }

            var add = GetCallableAddMethod();

            // TODO (tomat): this used to use event.ReflectedType, is it still correct?
            if (target != null) {
                add = CompilerHelpers.TryGetCallableMethod(target.GetType(), add);
            }

            add.Invoke(target, new object[] { delegateHandler });

            if (stubs != null) {
                // remember the stub so that we could search for it on removal:
                stubs.AddHandler(handler, delegateHandler);
            }
        }
Пример #2
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        public void AddHandler(object target, object handler, DynamicDelegateCreator delegateCreator) {
            ContractUtils.RequiresNotNull(handler, "handler");
            ContractUtils.RequiresNotNull(delegateCreator, "delegateCreator");

            Delegate delegateHandler;
            HandlerList stubs;

            // we can add event directly (signature does match):
            if (_eventInfo.EventHandlerType.IsAssignableFrom(handler.GetType())) {
                delegateHandler = (Delegate)handler;
                stubs = null;
            } else {
                // create signature converting stub:
                delegateHandler = delegateCreator.GetDelegate(handler, _eventInfo.EventHandlerType);
                stubs = GetHandlerList(target);
            }

            GetCallableAddMethod().Invoke(target, new object[] { delegateHandler });

            if (stubs != null) {
                // remember the stub so that we could search for it on removal:
                stubs.AddHandler(handler, delegateHandler);
            }
        }