Strategy_ShowEntries_Class.cs

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using System;
using System.Collections.Generic;
 
namespace DesignPatternExamples_csharp
{
    public class EntryInformation
    {
        public string Name;
 
        public int Age;
 
        public int Height;
 
        public EntryInformation(string name, int age, int height)
        {
            Name = name;
            Age = age;
            Height = height;
        }
 
 
        public override string ToString()
        {
            return String.Format("{0,6} {1,3} {2,3}\"", Name, Age, Height);
        }
    }
 
 
    //########################################################################
    //########################################################################
 
 
    public class Strategy_ShowEntries_Class
    {
        public enum SortOptions
        {
            ByName,
 
            ByAge,
 
            ByHeight,
        }
 
 
        ISortEntries _sortEntries;
 
        bool _reversedSort;
 
        public Strategy_ShowEntries_Class(SortOptions sortOption, bool reversedSort)
        {
            _reversedSort = reversedSort;
            // Create the sorting strategy to use.
            _sortEntries = Strategy_SortEntries_ClassFactory.Create(sortOption, reversedSort);
 
        }
 
        public void ShowEntries(EntryInformation[] entries)
        {
            // Make a local copy of the entries so we can sort them using the
            // List class's sorting capabilities; otherwise, we would have to
            // write our own sorting algorithms to work on an array.
            List<EntryInformation> localEntries = new List<EntryInformation>(entries);
            _sortEntries.Sort(localEntries);
 
            // This is a tabular display, making it easier to follow the sorted data.
            Console.WriteLine("    Sort strategy: {0} (order = {1})", _sortEntries, _reversedSort ? "Descending" : "Ascending");
            Console.WriteLine("      {0,6} {1,3} {2,3}", "Name", "Age", "Height");
            Console.WriteLine("      {0,6} {1,3} {2,3}", "------", "---", "------");
            foreach(EntryInformation entry in localEntries)
            {
                Console.WriteLine("      {0}", entry);
            }
        }
    }
}