'Declaration
<ExtensionAttribute()> <NotNullAttribute()> Public Overloads Shared Function BrowseTree( _ ByVal client As IEasyAEClient, _ ByVal serverDescriptor As ServerDescriptor, _ ByVal nodeDescriptor As AENodeDescriptor, _ ByVal browseParameters As AEBrowseParameters _ ) As ITreeTraversable(Of AENodeTreePosition)
'Usage
Dim client As IEasyAEClient Dim serverDescriptor As ServerDescriptor Dim nodeDescriptor As AENodeDescriptor Dim browseParameters As AEBrowseParameters Dim value As ITreeTraversable(Of AENodeTreePosition) value = IEasyAEClientExtension2.BrowseTree(client, serverDescriptor, nodeDescriptor, browseParameters)
[Extension()] [NotNull()] public static ITreeTraversable<AENodeTreePosition> BrowseTree( IEasyAEClient client, ServerDescriptor serverDescriptor, AENodeDescriptor nodeDescriptor, AEBrowseParameters browseParameters )
[Extension()] [NotNull()] public: static ITreeTraversable<AENodeTreePosition^>^ BrowseTree( IEasyAEClient^ client, ServerDescriptor^ serverDescriptor, AENodeDescriptor^ nodeDescriptor, AEBrowseParameters^ browseParameters )
Parameters
- client
- The client object that will perform the operation.
This is typically the OpcLabs.EasyOpc.AlarmsAndEvents.EasyAEClient object.
The value of this parameter cannot be
null
(Nothing
in Visual Basic). - serverDescriptor
- Server descriptor. Identifies the OPC-A&E server.
Because the OpcLabs.EasyOpc.ServerDescriptor has an implicit conversion from System.Guid, System.String and OpcLabs.EasyOpc.ServerElement, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a GUID (representing the CLSID of the server), a string (representing the so-called OPC server descriptor string, such as a ProgID or the URL of the server), or a OpcLabs.EasyOpc.ServerElement object (result from OPC browsing), in place of this parameter, and the corresponding OPC server descriptor will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the FromGuid, FromString or FromServerElement static method instead.
The value of this parameter cannot be
null
(Nothing
in Visual Basic). - nodeDescriptor
- Starting node descriptor. Identifies the node in OPC server's address space.
Because the OpcLabs.EasyOpc.AlarmsAndEvents.AENodeDescriptor has an implicit conversion from System.String and OpcLabs.EasyOpc.AlarmsAndEvents.AddressSpace.AENodeElement, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (representing the qualified name of the node), or a OpcLabs.EasyOpc.AlarmsAndEvents.AddressSpace.AENodeElement object (result from OPC browsing), in place of this parameter, and the corresponding OPC A&E node descriptor will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the FromString or FromAENodeElement static method instead.
The value of this parameter cannot be
null
(Nothing
in Visual Basic). - browseParameters
- Contains filtering conditions for OPC Alarms&Events node browsing.
The value of this parameter cannot be
null
(Nothing
in Visual Basic).
Return Value
This method never returns null
(Nothing
in Visual Basic).