[FieldLengthAttribute(50)]
public virtual string Username { get; set; }

<FieldLengthAttribute(50)>
Public Overridable Property Username As String
	Get
	Set

public:
[FieldLengthAttribute(50)]
virtual property String^ Username {
	String^ get ();
	void set (String^ value);
}

[<FieldLengthAttribute(50)>]
abstract Username : string with get, set
[<FieldLengthAttribute(50)>]
override Username : string with get, set