The PropDeepComparer class is a generic comparer. It takes an array of PropertyDescriptors and compares two of whatever type the descriptors point to. This is used when you have a list of complex objects, for example Customer. One of the properties of Customer could be a ShippingAddress object and one of the properties of ShippingAddress could be ZipCode. To sort a list of customers by ZipCode you would use this comparer with an array of propterty descriptors, i.e. sortProperty[0] = Property descriptor for Customer.ShippingAddress sortProperty[1] = Property descriptor for Customer.ShippingAddress.ZipCode It's called PropDeepComparer because can will look deep into an object.

'Declaration
 
Public Class PropDeepComparer 

'Usage
 
Dim instance As PropDeepComparer

public class PropDeepComparer