public virtual string CustomData { get; set; }

public virtual string CustomData { get; set; }

Public Overridable Property CustomData As String
	Get
	Set

Public Overridable Property CustomData As String
	Get
	Set

public:
virtual property String^ CustomData {
	String^ get ();
	void set (String^ value);
}

public:
virtual property String^ CustomData {
	String^ get ();
	void set (String^ value);
}

abstract CustomData : string with get, set
override CustomData : string with get, set

abstract CustomData : string with get, set
override CustomData : string with get, set