ListItem VB .net

Question

嗨我在asp.net中迭代/读取listItem有问题...我想读这个listItem

.....

Dim l As ListItem ' it's already load



Protected Sub load_menu(ByVal address_url As String)
    Dim slug As String = address_url.Substring(25) 

    Dim str As String
    For Each str In l 'HERE THERE IS A PROBLEM
        If String.Compare(str, slug) = 0 Then
            txt_url.Text = str
            Stop
        End If

    Next
End Sub

编译器告诉我L有问题，因为它不是集合......

您是否有想法如何迭代ListItem？

感谢您的时间：）