「VB.net」IndexOfメソッドで指定の値があるか判定のサンプル
構文
Public Shared Function IndexOf (array As Array, value As Object) As Integer
サンプルコード
Module ModuleTest
      Sub Main()
            Dim cft() As String = {"AA01", "BB02", "CC03", "DD04"} 
            Dim resA As Integer = Array.IndexOf("AB02")
            Console.WriteLine(resA) 
            Dim resB As Integer = Array.IndexOf("DD04")
            Console.WriteLine(resB) 
      End Sub
End Module
結果
-1
3