Use a collection
You can count, iterate, add, and remove objects in a collection.
Count objects in a collection
The
count
property of a collection is an integer variable that expresses the numberof objects in the collection. This example shows the number of child nodes in the Panel1
object:
var myObj = Project.Current.FindObject("Panel1"); Log.Info("The node contains " + myObj.Children.Count + " nodes");
Iterate objects in a collection
You can use the
foreach
instruction to iterate objects in a collection. This example generates an information message for each child node of the Panel1
object. The result is a list of the BrowseName
for all child nodes. In the example, a temporary child
variable is created, which represents a different child node in each cycle.
var myNode = Project.Current.Find("Panel1"); foreach (var child in myNode.Children) Log.Info(child.BrowseName);
Add or remove OPC UA nodes
You can use the
Add()
and Remove()
methods expressed by collections to add or remove project nodes. See Add or remove nodes.Provide Feedback