vb.net – Visual Basic – 是运算符

Public Class EquipmentNode
 '...
End Class

Private Sub DoWork()
 Dim node As TreeNode = _contextNode

 If node is EquipmentNode ' Does not work
 if node is TypeOf EquipmentNode ' Does not work
End Sub

如何查看节点是否为同一类型.现在我只是将它投射并查看结果是否为null,但我想使用“Is”运算符.

解决方法

Visual Basic Is Operator(与 C#’s is operator不同)不会告诉您对象的类型,而是两个对象变量是否引用相同的实际对象实例.

The Is operator determines if two object references refer to the same object

这不会告诉您对象是否是特定类型.

要比较类型,您可以使用：

If TypeOf node Is EquipmentNode Then