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IGxObjectContainer.AddChild Method (ArcObjects .NET 10.5 SDK)

ArcObjects Library Reference (Catalog)

IGxObjectContainer.AddChild Method

Adds a new child and returns a reference to it. However, if a duplicate already exists, the function returns the existing child instead.

[Visual Basic .NET]
Public Function AddChild ( _
    ByVal child As IGxObject _
) As IGxObject

[C#]
public IGxObject AddChild (
    IGxObject child
);

Available with ArcGIS Desktop.