How to send multiple asynchronous requests to different web services?
问题 I need to send multiple requests to many different web services and receive the results. The problem is that, if I send the requests one by one it takes so long as I need to send and process all individually. I am wondering how I can send all the requests at once and receive the results. As the following code shows, I have three major methods and each has its own sub methods. Each sub method sends request to its associated web service and receive the results;therefore, for example, to receive