public Object UnderlyingObject { get; }

Public ReadOnly Property UnderlyingObject As Object
	Get

public:
property Object^ UnderlyingObject {
	Object^ get ();
}

member UnderlyingObject : Object with get

Property Value

In many cases, the UnderlyingObject property returns a transparent proxy for COM object which already has been instantiated and wrapped. The property is not meant to be used in normal scenario: it should be used along with PIAs when there are no required functionality in a wrapper.

Consider the property as a "back door" or "work around" for missing functionality issues.

Reference