VB.Net 教程：Nested Select Case嵌套选择案例语句

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Nested Select Case语句可以将select语句作为外部select语句的语句序列的一部分。 即使内部和外部选择的情况常数包含公共值，也不会出现冲突。

示例：

Module decisions
   Sub Main()
      'local variable definition
      Dim a As Integer = 100
      Dim b As Integer = 200
      Select a
          Case 100
              Console.WriteLine("This is part of outer case ")
              Select Case b
                  Case 200
                      Console.WriteLine("This is part of inner case ")
              End Select
      End Select
      Console.WriteLine("Exact value of a is : {0}", a)
      Console.WriteLine("Exact value of b is : {0}", b)
      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：

This is part of outer case
This is part of inner case
Exact value of a is : 100
Exact value of b is : 200

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