Performance optimization ——. NET (C #) Invoke Web service invocation comparison of asynchronous and asynchronous callbacks (iii)

Several previous articles have learned Web services, and have done some analysis of synchronization and Asynchrony, and if friends read the previous article carefully, they will find that the result was printed in the previous blog post. The value of the AsyncState object is unreasonable, that is, the time difference of the operation,

Of course it is only a small bug does not affect the whole idea of the program!

Next, we learn the difference between asynchronous calls and asynchronous callbacks!

or analyze the code directly, as in the following asynchronous invocation:

Performance optimization ——. NET (C #) Invoke Web service invocation comparison of asynchronous and asynchronous callbacks (iii)