Demonstrate a variety of common collection sorting methods in C # by writing a demo

Not much to say, the program is very simple, is the collection of data to sort, but the use of the knowledge point is still more, Daniel do not spray, I would like to dedicate to beginners! Go directly to the program!

namespacedemo{/// <summary>    ///Demo: Sort elements using different sorting methods/// </summary>    classProgram {Private Static voidMain (string[] args) {ArrayList ArrayList=product.getarraylist (); List<Product> list =product.getlist (); //1. Sorting using functions that inherit the IComparer interfaceArrayList.Sort (NewProductcompare ()); foreach(Product productincharrayList) {Console.WriteLine (product.            ToString ()); } Console.WriteLine ("---------------------------"); //2. Sorting using functions that inherit the Icomparer<t> interfaceList. Sort (NewProductcomparet ()); foreach(Product productinchlist) {Console.WriteLine (product.            ToString ()); } Console.WriteLine ("---------------------------"); //3. Use the delegate to sortList. Sort (Delegate(product x, product y) {returnX.price.compareto (Y.price);            }); foreach(Product productinchlist) {Console.WriteLine (product.            ToString ()); }            //4, using lambda expression to sort;List. Sort ((x, y) = =X.price.compareto (Y.price)); foreach(Product productinchlist) {Console.WriteLine (product.            ToString ()); }            //5. Use the extension method to sort            foreach(Product productinchList. (p=>P.price)) {Console.WriteLine (product.            ToString ());        } console.readkey (); }    }     Public classProduct { Public stringName {Get;Set; }  Public decimalPrice {Get;Set; }  Public StaticArrayList getarraylist () {return NewArrayList () {NewProduct {Name ="WindowsPhone", Price =10m},NewProduct {Name ="Apple", Price =20m},NewProduct {Name ="Android", Price =5m}}; }         Public StaticList<product>GetList () {return NewList<product>()            {                NewProduct {Name ="WindowsPhone", Price =10m},NewProduct {Name ="Apple", Price =20m},NewProduct {Name ="Android", Price =5m}}; }         Public Override stringToString () {returnString.Format ("{0}--{1}", Name, Price); }    }    /// <summary>    ///to sort ArrayList using IComparer///display implements the Compare interface, a collection of common ArrayList types to invoke/// </summary>     Public classProductcompare:icomparer { Public intCompare (ObjectXObjecty) {Product First= X asProduct; Product Second= y asProduct; if(First! =NULL&& Second! =NULL)            {                returnFirst.Price.CompareTo (second.            Price); }            Else            {                return-1; }        }    }    /// <summary>    ///using IComparer<Product>to sort///Explicit implementation of the Compare interface, common list<T>a collection of types to invoke/// </summary>     Public classProductcomparet:icomparer<product>    {         Public intCompare (product x, product y) {product First= X asProduct; Product Second= y asProduct; if(First! =NULL&& Second! =NULL)            {                returnFirst.Price.CompareTo (second.            Price); }            Else            {                return-1; }        }    }}

Demonstrate a variety of common collection sorting methods in C # by writing a demo