Refresh the items listed in the appHandles array in the cache.
This method is called when a client executes a read from device or a read with maxAge argument
For OPC DA V2 read from device calls the method is called with all client requested items. In OPCDA V3 / XMLDA read calls the method is called only with the handles of the items that are currently in the cache older than maxAge.
Syntax
| Visual Basic (Declaration) | |
|---|---|
Public Function RefreshItems( _ ByVal appHandles() As Integer _ ) As Integer | |
| C# | |
|---|---|
public int RefreshItems( int[] appHandles ) | |
Parameters
- appHandles
- Array with the application handle of the items that need to be refreshed.
Return Value
Always returns S_OKRequirements
Target Platforms: Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows 7, Windows Server 2008 family