This namespace contains classes that are used to pass arguments to OPC Data Access operations and obtain the operation results.
Classes
| Class | Description |
![Class](template/packages/core-dotnet/images/Class.png) | DABrowseArguments | Holds arguments needed to browse OPC DA server nodes. |
![Class](template/packages/core-dotnet/images/Class.png) | DAHandleGroupArguments | Holds an integer handle, and OPC group parameters, as arguments to some operation. |
![Class](template/packages/core-dotnet/images/Class.png) | DAItemArguments | Holds an OPC server and item descriptor, as arguments to some operation. |
![Class](template/packages/core-dotnet/images/Class.png) | DAItemGroupArguments | Holds an OPC server and item descriptor, and OPC group parameters, as arguments to some operation. |
![Class](template/packages/core-dotnet/images/Class.png) | DAItemValueArguments | Holds an OPC server and item descriptor, and OPC group parameters, as arguments to some operation. |
![Class](template/packages/core-dotnet/images/Class.png) | DAItemVtqArguments | Holds an OPC server and item descriptor, and a value/timestamp/quality (OpcLabs.EasyOpc.DataAccess.DAVtq), as arguments to some operation. |
![Class](template/packages/core-dotnet/images/Class.png) | DANodeArguments | Holds all arguments needed to specify a node in an OPC-DA server. |
![Class](template/packages/core-dotnet/images/Class.png) | DANodeElementCollectionResult | Holds result of a Browse operation, i.e. the node elements obtained by browsing a node in OPC-DA Server's address space. |
![Class](template/packages/core-dotnet/images/Class.png) | DAPropertyArguments | Holds an OPC server, OPC node and OPC property descriptors, as arguments to some operation. |
![Class](template/packages/core-dotnet/images/Class.png) | DAReadItemArguments | Holds information necessary to read an OPC item, such OPC server and item descriptor, and read parameters. |
![Class](template/packages/core-dotnet/images/Class.png) | DAVtqResult | Holds result of an operation in form of a OpcLabs.EasyOpc.DataAccess.DAVtq (value, timestamp, and quality). |
![Class](template/packages/core-dotnet/images/Class.png) | EasyDAItemChangedEventArgs | Provides data for the EasyDAClient.ItemChanged event. |
![Class](template/packages/core-dotnet/images/Class.png) | EasyDAItemSubscriptionArguments | Holds an OPC server and item descriptor, and OPC group parameters, and possibly a callback method, as arguments to subscription operation. |
See Also