Extract Only One Of The Columns For All The Department-objects?

I have a collection of a DTO, Department, and would like to extract only one of the columns for all the Department-objects. I know that in C# you can do like this:

List<Department> departments = corporation.GetDepartments();
List<int> departmentIDs = departments.ConvertAll(dep => dep.ID);

Out from my understanding this is use of LINQ, with the argument to ConvertAll() being a lambda expression.

When trying to achieve the same in VB, it seems that one must define a Converter-method:Dim departmentIDs As List(Of Integer) = coll.ConvertAll(New Converter(Of Department, Integer)(AddressOf ConvertDepartmentToInt))Public Shared Function ConvertDepartmentToInt(ByVal dep As Department) As Integer
Return dep.ID End Function