DataServiceContext.BeginExecute<TElement> Method (Uri, AsyncCallback, Object)
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Asynchronously sends the request so that this call does not block processing while waiting for the results from the service.
Assembly: System.Data.Services.Client (in System.Data.Services.Client.dll)
'Declaration Public Function BeginExecute(Of TElement) ( _ requestUri As Uri, _ callback As AsyncCallback, _ state As Object _ ) As IAsyncResult
public IAsyncResult BeginExecute<TElement>( Uri requestUri, AsyncCallback callback, Object state )
The type returned by the query.
The URI to which the query request will be sent. The URI may be any valid data service URI; it can contain $ query parameters.
Delegate to invoke when results are available for client consumption.
User-defined state object that was passed to the callback.
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.
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.