Select...Case 语句
根据表达式的值定义一个或多个语句块。
语法：
Select Case condition Case expression Statement Block[Case expression2 Statement Block][Case Else] Statement Block End Select
参数：
Condition：任意表达式，用于控制是否执行各个 Case 子句之后的语句块。
Expression：与 Condition 类型表达式兼容的任意表达式。如果 Condition 与 Expression 匹配，则执行 Case 子句之后的语句块。
示例：
Sub ExampleRandomSelect
Dim iVar As Integer
iVar = Int((15 * Rnd) -2)
Select Case iVar
Case 1 To 5
Print "Number from 1 to 5"
Case 6, 7, 8
Print "Number from 6 to 8"
Case 8 To 10
Print "Greater than 8"
Case Else
Print "Out of range 1 to 10"
End Select
End Sub