相当于可空值检查

Question

VB.net中的等价物是什么

int? x;

int s;

s = x ?? 5;

Answer 1

if（）运算符是vb。

中的空合并运算符

s = If(x, 5)

Answer 2

vb.net中有三种方式可以为可空的声明

Dim x? As Integer
Dim x As Integer?
Dim x As Nullable(Of Integer)


Dim s As Integer

s = If(x, 5)