'Declaration
 
Protected MustOverride Function BeginExecuteDataQuery( _
   ByVal queryParameters As DataQueryParameters, _
   ByVal callback As AsyncCallback, _
   ByVal state As Object _
) As IAsyncResult

'Usage
 
Dim instance As AsyncDataSourceProvider
Dim queryParameters As DataQueryParameters
Dim callback As AsyncCallback
Dim state As Object
Dim value As IAsyncResult
 
value = instance.BeginExecuteDataQuery(queryParameters, callback, state)

protected abstract IAsyncResult BeginExecuteDataQuery( 
   DataQueryParameters queryParameters,
   AsyncCallback callback,
   object state
)

Parameters

queryParameters

A DataQueryParameters that contains information about the operations that must be executed by the query on the underlying data source.

callback

The AsyncCallback delegate to be called when the operation is complete.

state

An object containing state information for the operation.

Return Value

Target Platforms: Windows 7, Windows Vista, Windows XP SP3, Windows Server 2008 family

Reference

AsyncDataSourceProvider Class
AsyncDataSourceProvider Members