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DataServiceContext.BeginExecute<TElement> Method (Uri, AsyncCallback, Object)

Asynchronously sends the request so that this call does not block processing while waiting for the results from the service.

Namespace:  System.Data.Services.Client
Assembly:  System.Data.Services.Client (in System.Data.Services.Client.dll)

public IAsyncResult BeginExecute<TElement>(
	Uri requestUri,
	AsyncCallback callback,
	Object state
)

Type Parameters

TElement

The type returned by the query.

Parameters

requestUri
Type: System.Uri
The URI to which the query request will be sent. The URI may be any valid data service URI; it can contain $ query parameters.
callback
Type: System.AsyncCallback
Delegate to invoke when results are available for client consumption.
state
Type: System.Object
User-defined state object that was passed to the callback.

Return Value

Type: System.IAsyncResult
The query result.

The BeginExecute method uses the same semantics as Execute<TElement>, however this method asynchronously sends the request so that this call does not block processing while waiting for the results from the service. According to the standard begin-end asynchronous pattern, the provided callback is invoked when query results are retrieved.

You must use the BeginInvoke method of the Dispatcher class to correctly marshal the response operation back to the main application thread (the UI thread) of your Silverlight-based application. For more information, see Synchronizing Data for Multithreading.

Silverlight

Supported in: 5, 4, 3

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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