QuickOPC User's Guide and Reference
Read(IEnumerable<PointBindingGroup>) Method



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib.LiveBinding Namespace > PointBinderCore Class > Read Method : Read(IEnumerable<PointBindingGroup>) Method
The binding groups to be operated upon.
Executes the "Read" operation on all bindings in given binding groups.
Syntax
'Declaration
 
Public Overloads Sub Read( _
   ByVal bindingGroups As IEnumerable(Of PointBindingGroup) _
) 
'Usage
 
Dim instance As PointBinderCore
Dim bindingGroups As IEnumerable(Of PointBindingGroup)
 
instance.Read(bindingGroups)

Parameters

bindingGroups
The binding groups to be operated upon.
Exceptions
ExceptionDescription

A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

A method call was invalid for the object's current state.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

The component is not licensed for the operation requested.
Remarks
The "Read" operation reads a value of a point and stores it into the binding source. Only bindings of type PointBinding that include PointBindingOperations.Read in their BindingOperations are affected; other bindings are ignored.
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