PropertyWatcher.Attach Method

PropertyWatcher Attach Method

Cognex VisionPro 9.21

Attaches to a new subject and path.

Namespace: Cognex.Vision
Assembly: Cognex.Vision.Core.Net (in Cognex.Vision.Core.Net.dll) Version: 9.21.0.0

Syntax

public void Attach(
	Object subject,
	string path
)

public void Attach(
	Object subject,
	string path
)

Public Sub Attach ( 
	subject As Object,
	path As String
)

Public Sub Attach ( 
	subject As Object,
	path As String
)

public:
void Attach(
	Object^ subject, 
	String^ path
)

public:
void Attach(
	Object^ subject, 
	String^ path
)

Parameters

subject: Type: System Object
The object instance to monitor.

path: Type: System String
Path to property to monitor.

Exceptions

Exception	Condition
InvalidOperationException	If the state flag of a property cannot be found. A conversion from PropertyWatcher source to IChangedEvent type fails.
VisionException	Assigning a new source fails. If the source type or property name change and this function fails to get a new property meta.

Remarks

Changed Raises because this method may change the Path, Subject, IsConnected, PropertyMeta, and Value properties. The following StateFlags may be affected: