What is asynchronous implementation?
Different languages have different implementations for asynchronous callbacks, but the principles are the same. The key is to decouple the control flow from the executed code. They correspond to the execution context (such as a thread of control with a runtime stack) and the executed task.
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What is an asynchronous process?
An asynchronous process is a process that the Workflow Engine cannot complete immediately because it contains activities that interrupt the flow. Examples of activities that force asynchronous processing include deferred activities, notifications with responses, blocking activities, and wait activities.
How is a delegate used in asynchronous programming?
Delegates allow you to call a synchronous method asynchronously. When you call a delegate synchronously, the Invoke method calls the target method directly on the current thread.
What happens to delegates when allmethodsdelegate is invoked?
The three original delegates, d1, d2, and d3, remain unchanged. When allMethodsDelegate is called, all three methods are called in order. If the delegate uses reference parameters, the reference is passed sequentially to each of the three methods, and changes to one method are visible to the next method.
What happens when you instantiate a delegate on MSDN?
Once a delegate is instantiated, the delegate will pass a method call made to the delegate to that method. Parameters passed to the delegate by the caller are passed to the method, and the delegate returns to the caller the return value, if any, of the method. This is known as invoking the delegate.
How to add additional method to delegate list?
Adding an additional method to the delegate’s method list, the invocation list, simply requires adding two delegates using the addition or addition (‘+’ or ‘+=’) assignment operators. For example: var obj = new MethodClass (); Del d1 = obj.Method1; Del d2 = obj.Method2; Del d3 = DelegateMethod; //Both assignment types are valid.