将集合转换为数组的最优化/最有效的方法是什么?

我知道一定有人问了两次以上,但我找不到任何合适的问题来回答这个问题。

我有一个集合,希望从.NET 2.0中检索数组。换句话说,我要将集合转换为数组。到目前为止,我有以下几点:

Public Class Set(Of T)
    Implements IEnumerable(Of T)
    Implements ICollection(Of T)
    Implements IEqualityComparer(Of T)

    Private _set as Dictionary(Of T, Object)

    // Implementing the interfaces here...

    Public Function ToArray() As Array
        Dim arr As Array = Array.CreateInstance(GetType(T), Me.Count)
        Me.CopyTo(arr, 0)
        Return arr
    End Function
End Class

然后,当我打电话给它时,我只需要:

Dim propertiesToLoad As CustomSet(Of String) = New CustomSet(Of String)()
// Initializing my CustomSet here...

Dim searcher As DirectorySearcher = New DirectorySearcher()
Dim entry As DirectoryEntry = New DirectoryEntry("LDAP://" & Environment.UserDomain)

searcher.SearchRoot = entry
searcher.SearchScope = SearchScope.Subtree
searcher.Filter = someFilter
searcher.PropertiesToLoad.AddRange(propertiesToLoad.ToArray())

// Launching search here...

在.NET 2.0中有更有效的方法吗?

编辑第1页

count和copyto在my customset(of t)中的实现:

Public ReadOnly Property Count As Integer Implements ICollection(Of T).Count
    Get
        Return _set.Keys.Count
    End Get
End Property

Public Sub CopyTo(ByVal array As T, ByVal arrayIndex As Integer) Implements ICollection(Of T).CopyTo
    _set.Keys.CopyTo(array, arrayIndex)
End Sub