At least one object must implement IComparable

Created Jun 24, 2011 Edited Jun 24, 2011

Viewed 23802

var listair = empcon.OrderBy(x => x.CustomerConnection.OrderBy(y => y.Id)).ToList();

When I am using this statement then I am getting exception "At least one object must implement IComparable"

How can I solve this problem?

linq-to-objects c#