检查Newtonsoft.Json.Linq.JToken是不是Nothing

Question

根据调试器，我有一个名为myCancelled的类型为Newtonsoft.Json.Linq.Jtoken的变量，其值为Nothing。我也将它铸造成Object，所有这些情况都失败了。我的问题很简单：如何检查它是Nothing/Null/False/Empty？

这是我试过的。这些条件都不计算为真：

  If myCancelled Is Nothing Then 
       'Doesn't come here 
      End If 
      If myCancelled = DBNull.Value.ToString Then 
       'Doesn't come here 
      End If 
      If myCancelled = "null" Then 
       'Doesn't come here 
      End If 
      If IsDBNull(myCancelled) Then 
       'Doesn't come here 
      End If 
      If myCancelled Is DBNull.Value Then 
       'Doesn't come here 
      End If 
      If String.IsNullOrEmpty(myCancelled) = True Then 
       'Doesn't come here 
      End If 
      If myCancelled.ToString = "Nothing" Then 
       'Runtime error 
      End If 
      If myCancelled = DBNull.Value Then 
       'Runtime error 
      End If 
      If IsNothing(myCancelled) Then 
       'Doesn't come here 
      End If 

我是新来VB.net所以任何指针赞赏。

编辑

这一个工作，但它通过时（myCancelled有其价值，条件是真实的）让误报

  If Not myCancelled Then 
       ' It comes here 
      End If 

Answer 1

这是什么工作。 VB很难学习，当你习惯了Java，C＃等。

If Not myCancelled.Equals("Y") Then 
    ' It finally came here 
End If