One of my favorite features in .NET 3.5 is lambda expressions. This example demonstrates how to use lambda expressions: To compare items in two lists and find which items in one list are not in the other. For example: {1, 2, 3}, {2, 3, 4}. {1} is only in the first list. To display the contents of the resulting set. First, define two lists: List<int> list1 = new List<int>() { 1, 6, 8 }; List<int> list2 = new List<int>() { 2, 6 }; The follo... [For the complete article see the Orignal Post link below] ...