Opc data Access Automation Specification

4.5.3.5

 

Count  

Description 

 (Read-only) Required property for collections.  

Syntax 

 Count As Long 

Example 

VB Syntax Example (getting the property): 

Dim CurrentValue As Long 

Dim SomeValue As Long 

CurrentValue = AnOPCItemCollection.Count 

 

4.5.4

 

 OPCItems Methods  

4.5.4.1

 

Item  

Description 

Required property for collections.  

Syntax 

 Item (ItemSpecifier As Variant) As OPCItem 

 

Part Description 

ItemSpecifier 

Returns an OPCItem by ItemSpecifier. ItemSpecifier is the 1-based 

index into the collection 

 

Remarks 

Returns an OPCItem by ItemSpecifier. ItemSpecifier is the 1-based index into the collection. Use 

GetOPCItem to reference by ServerHandle. 

NOTE: do not confuse the automation 'Item' property with the OPCItem object. The automation 

'Item' is a special reserved property used in a generic way by automation collections to refer to the 

items they contain. The OPCItem is an OPC Automation specific object type that can reside in an 

'OPCItems' collection.  

65 

 

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OPC Data Access Automation Specification2.02