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copied!<p>I think it is a very valid exercise if nothing else. I, too, am working on an asynchronous 'delegate' handler. You can increase the flexibility, and you will learn a great deal about the async model.</p> <p>I know this <a href="https://stackoverflow.com/questions/2215712/c-expression-trees-and-invoking-a-delegate/2215829#2215829">SO question</a> contains some Linq exercise in it. However, it might give you an idea on using expression trees to make it a bit more robust. I have yet to dive into the subject and provide you with more concrete information.</p> <p>Here is a sample of a piece of my old code on publishing asynchronous methods. This is a <strong>dated</strong> exercise in learning reflection and some interesting implementations. Take it for what it's worth, but it might help you with some ideas:</p> <pre><code>public delegate void delVoidMethod(params object[] args); /// <summary> /// Publishes an asynchronous method to the delegate collection. /// </summary> /// <param name="methodOwner">Target object owning the delegated method.</param> /// <param name="method">The delegated method.</param> /// <param name="callback">The method designated as a callback delegate.</param> /// <param name="ptr">The delegated method's runtime handle.</param> /// <returns>True if publishing was successful.</returns> public bool PublishAsyncMethod(object target , MethodInfo method , MethodInfo callback , out IntPtr ptr) { try { ptr = method.MethodHandle.Value; delVoidMethod dMethod = (delVoidMethod)Delegate.CreateDelegate (typeof(delVoidMethod) , target , method); AsyncCallback callBack = (AsyncCallback)Delegate.CreateDelegate (typeof(AsyncCallback) , target , callback); handlers[ptr] = new DelegateStruct(dMethod , callBack); Logger.WriteLine("Delegate : {0}.{1} -> {2}.{3} published." , method.DeclaringType.Name , method.Name , callback.DeclaringType.Name , callback.Name); return true; } catch (ArgumentException ArgEx) { Logger.Write(DH_ERROR , ERR_MSG , ArgEx.Source , ArgEx.InnerException , ArgEx.Message); } catch (MissingMethodException BadMethEx) { Logger.Write(DH_ERROR , ERR_MSG , BadMethEx.Source , BadMethEx.InnerException , BadMethEx.Message); } catch (MethodAccessException MethAccEx) { Logger.Write(DH_ERROR , ERR_MSG , MethAccEx.Source , MethAccEx.InnerException , MethAccEx.Message); } ptr = IntPtr.Zero; return false; } </code></pre>

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