class Program
{
    private static void Main(string[] args)
    {
        int[] pn = { 9, 8, 7, 6, 5, 4 };

        foreach (var item in pn)
        {
            if (item == 6)
            {
                break;
            }
            Console.WriteLine(item);
        }
        Console.ReadKey();
    }
}                                

Class Program
    Private Shared Sub Main(args As String())
        Dim pn As Integer() = { 9, 8, 7, 6, 5, 4 }

        For Each item As var In pn
            If item = 6 Then
                Exit For
            End If
            Console.WriteLine(item)
        Next
        Console.ReadKey()
    End Sub
End Class