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问题描述
是否有与此等效的VB.NET? 请特别注意代码示例中的 bmp 。
Is there a VB.NET equivalent to this? Note in particular the bmp in the code sample.
public void MyMethod(Object obj) { if (obj is Bitmap bmp) { // ... } }或者带有的短模式匹配语法是是C#专有的?
Or the short pattern matching syntax with is is exclusive to C#?
编辑:
我已经知道这些语法:
If TypeOf obj Is Bitmap Then Dim bmp As Bitmap = obj ' ... End If或
Dim bmp As Bitmap = TryCast(obj, Bitmap) If bmp IsNot Nothing Then ' ... End If我想知道的是是否还有更短的内容,例如新的C#7语法...
What I want to know is whether there is something even shorter, like that new C#7 syntax...
非常感谢你ch。
推荐答案当前没有。如果要实现此目的,则必须使用在问题中已经提到的一些较长的格式。
Currently, no. If you want to implement this, you'll have to use some of the longer formats you already mention in your question.
C#和VB语言并不总是具有等效功能。
The C# and VB languages don't always have equivalent features.
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VB.NET等效于C#7类型模式匹配
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