Find・FindLast・FindAllメソッドを使って条件に合致するList内の要素を取得する(ラムダ式版、VB10以降)
Imports System
Imports System.Collections.Generic

Class Sample
  Shared Sub Main()
    Dim list As New List(Of String)(New String() {"Alice", "Bob", "Charlie", "Dave", "Eve"})

    ' 長さが3である最初の要素
    Console.WriteLine("Find: {0}", list.Find(Function(s) s.Length = 3))

    ' 長さが3である最後の要素
    Console.WriteLine("FindLast: {0}", list.FindLast(Function(s) s.Length = 3))

    ' "e"を含むすべての要素
    Dim found As List(Of String) = list.FindAll(Function(s) s.Contains("e"))

    Console.Write("FindAll: ")
    For Each e As String In found
      Console.Write("{0}, ", e)
    Next
    Console.WriteLine()
  End Sub
End Class
実行結果
Find: Bob
FindLast: Eve
FindAll: Alice, Charlie, Dave, Eve,