A Sorter<T> implements the generic IComparer<T> interface to compare two objects of type T, using a caller-supplied sort specification (which includes the fields to consider during sorting, and the sort direction). A field value resolver then is used to retrieve, for a specific field, the value of that field in each of the two instaces which are currently compared.

public class Sorter<T> : IComparer<T>

Public Class Sorter(Of T)
	Implements IComparer(Of T)

generic<typename T>
public ref class Sorter : IComparer<T>

type Sorter<'T> =  
    class
        interface IComparer<'T>
    end