OPC Studio User's Guide and Reference
WaitForMultipleItems Method



OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.DataAccess.Extensions Namespace > IEasyDAClientExtension2 Class : WaitForMultipleItems Method
Waits until the OPC-DA items satisfy the given conditions.

Subscribes to the specified OPC-DA items, and monitors their data until the predicates specified for each item become true, or the alloted time elapses.

The server(s) can be local or can be remotely accessed via DCOM.

Overload List
OverloadDescription
Waits until the OPC-DA items satisfy the given conditions. Specify arguments objects, and exit predicates based on OpcLabs.EasyOpc.DataAccess.OperationModel.DAVtqResult.  
Waits until the OPC-DA items satisfy the given conditions. Specify arguments objects, and exit predicates based on OpcLabs.EasyOpc.DataAccess.OperationModel.EasyDAItemChangedEventArgs.  
Waits until the OPC-DA items satisfy the given conditions. Specify arguments objects, exit predicates based on OpcLabs.EasyOpc.DataAccess.OperationModel.DAVtqResult, and timeout in milliseconds.  
Waits until the OPC-DA items satisfy the given conditions. Specify arguments objects, exit predicates based on OpcLabs.EasyOpc.DataAccess.OperationModel.EasyDAItemChangedEventArgs, and timeout in milliseconds.  
Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

See Also