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

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

protected abstract IAsyncResult BeginExecuteCountQuery( 
   CountQueryParameters queryParameters,
   AsyncCallback callback,
   object state
)

Parameters

queryParameters

A CountQueryParameters 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 11, Windows 10, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

AsyncDataSourceProvider Class
AsyncDataSourceProvider Members