Visual Basic (Usage)	Copy Code
Dim instance As OpcXmlDA Dim Options As RequestOptions Dim ItemList As ReadRequestItemList Dim callback As AsyncCallback Dim asyncState As Object Dim value As IAsyncResult   value = instance.BeginRead(Options, ItemList, callback, asyncState)

public IAsyncResult BeginRead( 
   RequestOptions Options,
   ReadRequestItemList ItemList,
   AsyncCallback callback,
   object asyncState
)

Parameters

Options

Container with options used in most server calls.

ItemList

The container for the individual Items. It is expected that there are one or more Items per ItemList.

callback

Delegate of the method to be called when the asynchronous operation is completed.

asyncState

A user-provided object that distinguishes this particular asynchronous request from other requests.

Return Value

Target Platforms:Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows 7, Windows Server 2008 family

Reference