asynchronous call

Unfortunately the very nature of an asynchronous call means that delegates cannot be inlined.

Furthermore, there is quite a bit of boilerplate code involved in setting up an asynchronous call.

The body of each method on this proxy script class will perform an asynchronous call to its corresponding Web service method.

The point to make here is that the invocation of your service as described above is an asynchronous call.

The application uses a number of callbacks to handle the state of each asynchronous call.

Pretty much any kind of external service is going to require an asynchronous call that returns on the UI thread.

Neither of these delegates has a return value, because there is no place to return the data from an asynchronous call.

As in the multiple-click scenario, an asynchronous call might process a bit more slowly.

The asynchronous call to the server will be triggered when the validate method is called.

Polling repeatedly checks the status of an asynchronous call from within a loop.

Gets the delegate object on which the asynchronous call was invoked.

Asynchronous call back - Client issues a request and the target will call a service implemented by the client with the response.

The method returns an IAsyncResult, which can be used to monitor completion, wait on the WaitHandle, or complete the asynchronous call.

The result of the asynchronous call.

The return value of an asynchronous call can be recovered by calling the EndInvoke method.

There's no easy way to return the result of an asynchronous call.

This relieves you of manually handling exceptions that occur during an asynchronous call.

Manage asynchronous call completion on a callback method.

When it receives focus, an asynchronous call is made to retrieve the values from the server.

It makes an asynchronous call to the data that we exposed RESTfully in the previous step.

Shows how to make an asynchronous call to a method of a remote object.

We first act on the web page, then wait until the asynchronous call completes.

You can use this deferred object for defining a callback method when the asynchronous call returns a response.

Demonstrates how to make an asynchronous call to a Web service from a client application.

An asynchronous call to the server is made to perform the server validation.

Gets the response message for the asynchronous call.

The asynchronous call runs on a separate thread; however, the UI is slightly less responsive while the call is active.

Avoid making an asynchronous call for every keystroke or mouse move.

Initiates an asynchronous call to the HTTP event handler.

That represents the asynchronous call.

Initiates an asynchronous call to the HTTP handler.

Assume that a client operation makes an asynchronous call to the Project Zero application.

This is an asynchronous call, so once the message is given to WebSphere MQ, the call returns.

This exception is thrown when the client tries to get the response from an asynchronous call.

The input values to the asynchronous call.

Using events - A signal is set as soon as the asynchronous call is finished.

Listing 10 shows a code snippet that makes an asynchronous call to the web service defined in Listing 1.

The Implementation of the Asynchronous Call Extended Model

Notify the user if an error occurred during the asynchronous call

How to: Make an Asynchronous Call from a Web Service Client