vbscript 如果另一个返回变量不可为空，则VB.NET可空整数通过if语句可能没有任何结果= 0。

Posted 2021-05-22

Imports System
				
Public Module Module1
	Public Sub Main()
		Dim a as Integer? = Nothing
		Dim b as Integer = 5
		Dim c as Integer? = 5
		a = If(1=1, nothing, b)
		Console.WriteLine(a) ' 0
		a = Nothing
		Console.WriteLine(a) ' nothing
		a = If(1=1, nothing, c)
		Console.WriteLine(a) ' nothing
	End Sub
End Module