Public Class EquipmentNode '...End ClassPrivate Sub DoWork() Dim node As TreeNode = _contextNode If node is EquipmentNode ' Does not work if node is TypeOf EquipmentNode ' Does not workEnd Sub 如何查看节点是否为同一类型.现在我
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.
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