// Add items Item[] items = new Item[] new Item() ItemName = "Channel1.Device1.Tag1", Active = true, ClientHandle = "Tag1" ; subscription.AddItems(items);
The solution is straightforward: download and run the official OPC Core Components Redistributable installer that matches your system architecture. Avoid manual file copying. For new development, consider migrating to OPC UA to bypass these legacy COM dependencies entirely. opcnetapi.dll
: Supports querying archived historical data through specialized methods like Event Handling // Add items Item[] items = new Item[]