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Select Case语句允许根据值列表测试变量的相等性。 每个值称为大小写,并且为每个选择大小检查打开的变量。
VB.Net中Select Case语句的语法如下:
Select [ Case ] expression
[ Case expressionlist
[ statements ] ]
[ Case Else
[ elsestatements ] ]
End Select
Module decisions
Sub Main()
'local variable definition
Dim grade As Char
grade = "B"
Select grade
Case "A"
Console.WriteLine("Excellent!")
Case "B", "C"
Console.WriteLine("Well done")
Case "D"
Console.WriteLine("You passed")
Case "F"
Console.WriteLine("Better try again")
Case Else
Console.WriteLine("Invalid grade")
End Select
Console.WriteLine("Your grade is {0}", grade)
Console.ReadLine()
End Sub
End Module
当上述代码被编译和执行时,它产生以下结果:
Well done
Your grade is B
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