vb.net中对CType运算符的重载

Public Shared Narrowing Operator CType(ByVal name As String) As Person
    Dim obj As New Person 'Ctype必须带有Narrowing（收缩）或Widening(扩展）来指明类型的变化范围
    obj.Name = name
    Return obj
End Operator
Public Shared Widening Operator CType(ByVal obj As Person) As String
	Return obj.Name 'Person->String转换，由窄转向宽，扩展，故用windening
End Operator