The cache update handling depends on the writeCacheUpdateMode selection set in the GetModeDefinitions() implementation.
For 0 (Generic): The cache is updated in the generic server after returning from the customization WiteItems method. Items with write error are not updated in the cache.
For 1 (Custom): The customization module needs to update the cache by executing the SetItemValue callback method for each written item. The generic server does not update the cache.
Overload List
| Overload | Description |
|---|---|
| WriteItems(DeviceItemValue[],Int32[]) | DEPRECIATED! This overload is is only called if the overload with the client handle argument is not defined. This method is called when a client executes a 'write' server call. The items specified in the appHandles array need to be written to the device. The cache update handling depends on the writeCacheUpdateMode selection set in the GetModeDefinitions() implementation. For 0 (Generic): The cache is updated in the generic server after returning from the customization WiteItems method. Items with write error are not updated in the cache. For 1 (Custom): The customization module needs to update the cache by executing the SetItemValue callback method for each written item. The generic server does not update the cache. |
| WriteItems(Int32,DeviceItemValue[],Int32[]) | This method is called when a client executes a 'write' server call. This overload is used if defiend. The items specified in the appHandles array need to be written to the device. The cache update handling depends on the writeCacheUpdateMode selection set in the GetModeDefinitions() implementation. For 0 (Generic): The cache is updated in the generic server after returning from the customization WiteItems method. Items with write error are not updated in the cache. For 1 (Custom): The customization module needs to update the cache by executing the SetItemValue callback method for each written item. The generic server does not update the cache. |
Requirements
Target Platforms: 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