Public Function BrowseOPCItemIDs( _
   ByVal filterType As OPCDA.OPCBROWSETYPE, _
   ByVal filterCriteria As String, _
   ByVal sTypeFilter As Type, _
   ByVal accessRightsFilter As OPCDA.OPCACCESSRIGHTS, _
   ByRef nodes As String() _
) As Integer

public int BrowseOPCItemIDs( 
   OPCDA.OPCBROWSETYPE filterType,
   string filterCriteria,
   Type sTypeFilter,
   OPCDA.OPCACCESSRIGHTS accessRightsFilter,
   out string[] nodes
)

Parameters

filterType

IN: branch/leaf filter
OPC_BRANCH - returns only items that have children
OPC_LEAF - returns only items that don't have children
OPC_FLAT - returns everything at and below this level including all children of children - basically 'pretends' that the address space in actually FLAT
This parameter is ignored for FLAT address space.

filterCriteria

A server specific filter string. This is entirely free format and may be entered by the user via an EDIT field. Although the valid criteria are vendor specific, source code for a recommended filter function is included in an Apppendix at the end of this document. This particular filter function is commonly used by OPC interfaces and is very similar in functionality to the LIKE function in Visual Basic. A pointer to a NUL string indicates no filtering.

sTypeFilter

Data type filter specified as a .Net data type
Filter the returned list based in the available datatypes (those that would succeed if passed to AddItem). Type void indicates no filtering.

accessRightsFilter

Filter based on the AccessRights bit mask (OPC_READABLE or OPC_WRITEABLE). The bits passed in the bitmask are 'ANDed' with the bits that would be returned for this Item by AddItem, ValidateItem or EnumOPCItemAttributes. If the result is non-zero then the item is returned. A 0 value in the bitmask indicates that the AccessRights bits should be ignored during the filtering process.

nodes

OUT: string array with the browsed items.

Return Value

Target Platforms: Windows 7/8/10, Windows Server 2008/2012/2016, .NET 4.7.2

See Also