EasyUA Reference
Exists Method
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Opc.Ua.Core.Net4 Assembly > Opc.Ua Namespace > ReferenceCollection Class : Exists Method

Visual Basic (Usage)
C#

referenceTypeId: The reference type identifier.

isInverse: if set to true this is inverse reference.

targetId: The target identifier.

includeSubtypes: if set to true subtypes are included.

typeTree: The type tree.

Checks whether any references which meet the specified critia exist.

Syntax

Visual Basic (Usage)	Copy Code
Dim instance As ReferenceCollection Dim referenceTypeId As NodeId Dim isInverse As Boolean Dim targetId As ExpandedNodeId Dim includeSubtypes As Boolean Dim typeTree As ITypeTable Dim value As Boolean value = instance.Exists(referenceTypeId, isInverse, targetId, includeSubtypes, typeTree)

Visual Basic (Usage)

Copy Code

Dim instance As ReferenceCollection
Dim referenceTypeId As NodeId
Dim isInverse As Boolean
Dim targetId As ExpandedNodeId
Dim includeSubtypes As Boolean
Dim typeTree As ITypeTable
Dim value As Boolean
 
value = instance.Exists(referenceTypeId, isInverse, targetId, includeSubtypes, typeTree)

C#
public bool Exists( NodeId referenceTypeId, bool isInverse, ExpandedNodeId targetId, bool includeSubtypes, ITypeTable typeTree )

public bool Exists( 
   NodeId referenceTypeId,
   bool isInverse,
   ExpandedNodeId targetId,
   bool includeSubtypes,
   ITypeTable typeTree
)

Parameters

referenceTypeId: The reference type identifier.
isInverse: if set to true this is inverse reference.
targetId: The target identifier.
includeSubtypes: if set to true subtypes are included.
typeTree: The type tree.

Return Value

True if reference exists.

Requirements

Target Platforms: Windows 7/8/10, Windows Server 2003/2008/2012/2015, .NET4.x

Syntax

Parameters

Return Value

Requirements

See Also

Reference