DataServiceContext.BeginExecute(Of 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.
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
The type returned by the query.
- 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.
- Type: System.AsyncCallback
Delegate to invoke when results are available for client consumption.
- Type: System.Object
User-defined state object that was passed to the callback.
Return ValueType: System.IAsyncResult
The query result.
The BeginExecute method uses the same semantics as Execute(Of 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.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.