내가 좋아하는 SortedList

http://msdn.microsoft.com/en-us/library/ms132319.aspx#Mtps_DropDownFilterText

using System;

using System.Collections.Generic;

public class Example

{

    public static void Main()

    {

        // Create a new sorted list of strings, with string

        // keys.

        SortedList<string, string> openWith = 

            new SortedList<string, string>();

        // Add some elements to the list. There are no 

        // duplicate keys, but some of the values are duplicates.

        openWith.Add("txt", "notepad.exe");

        openWith.Add("bmp", "paint.exe");

        openWith.Add("dib", "paint.exe");

        openWith.Add("rtf", "wordpad.exe");

        // The Add method throws an exception if the new key is 

        // already in the list.

        try

        {

            openWith.Add("txt", "winword.exe");

        }

        catch (ArgumentException)

        {

            Console.WriteLine("An element with Key = \"txt\" already exists.");

        }

        // The Item property is another name for the indexer, so you 

        // can omit its name when accessing elements. 

        Console.WriteLine("For key = \"rtf\", value = {0}.", 

            openWith["rtf"]);

        // The indexer can be used to change the value associated

        // with a key.

        openWith["rtf"] = "winword.exe";

        Console.WriteLine("For key = \"rtf\", value = {0}.", 

            openWith["rtf"]);

        // If a key does not exist, setting the indexer for that key

        // adds a new key/value pair.

        openWith["doc"] = "winword.exe";

        // The indexer throws an exception if the requested key is

        // not in the list.

        try

        {

            Console.WriteLine("For key = \"tif\", value = {0}.", 

                openWith["tif"]);

        }

        catch (KeyNotFoundException)

        {

            Console.WriteLine("Key = \"tif\" is not found.");

        }

        // When a program often has to try keys that turn out not to

        // be in the list, TryGetValue can be a more efficient 

        // way to retrieve values.

        string value = "";

        if (openWith.TryGetValue("tif", out value))

        {

            Console.WriteLine("For key = \"tif\", value = {0}.", value);

        }

        else

        {

            Console.WriteLine("Key = \"tif\" is not found.");

        }

        // ContainsKey can be used to test keys before inserting 

        // them.

        if (!openWith.ContainsKey("ht"))

        {

            openWith.Add("ht", "hypertrm.exe");

            Console.WriteLine("Value added for key = \"ht\": {0}", 

                openWith["ht"]);

        }

        // When you use foreach to enumerate list elements,

        // the elements are retrieved as KeyValuePair objects.

        Console.WriteLine();

        foreach( KeyValuePair<string, string> kvp in openWith )

        {

            Console.WriteLine("Key = {0}, Value = {1}", 

                kvp.Key, kvp.Value);

        }

        // To get the values alone, use the Values property.

        IList<string> ilistValues = openWith.Values;

        // The elements of the list are strongly typed with the 

        // type that was specified for the SorteList values.

        Console.WriteLine();

        foreach( string s in ilistValues )

        {

            Console.WriteLine("Value = {0}", s);

        }

        // The Values property is an efficient way to retrieve

        // values by index.

        Console.WriteLine("\nIndexed retrieval using the Values " +

            "property: Values[2] = {0}", openWith.Values[2]);

        // To get the keys alone, use the Keys property.

        IList<string> ilistKeys = openWith.Keys;

        // The elements of the list are strongly typed with the 

        // type that was specified for the SortedList keys.

        Console.WriteLine();

        foreach( string s in ilistKeys )

        {

            Console.WriteLine("Key = {0}", s);

        }

        // The Keys property is an efficient way to retrieve

        // keys by index.

        Console.WriteLine("\nIndexed retrieval using the Keys " +

            "property: Keys[2] = {0}", openWith.Keys[2]);

        // Use the Remove method to remove a key/value pair.

        Console.WriteLine("\nRemove(\"doc\")");

        openWith.Remove("doc");

        if (!openWith.ContainsKey("doc"))

        {

            Console.WriteLine("Key \"doc\" is not found.");

        }

    }

}

/* This code example produces the following output:

An element with Key = "txt" already exists.

For key = "rtf", value = wordpad.exe.

For key = "rtf", value = winword.exe.

Key = "tif" is not found.

Key = "tif" is not found.

Value added for key = "ht": hypertrm.exe

Key = bmp, Value = paint.exe

Key = dib, Value = paint.exe

Key = doc, Value = winword.exe

Key = ht, Value = hypertrm.exe

Key = rtf, Value = winword.exe

Key = txt, Value = notepad.exe

Value = paint.exe

Value = paint.exe

Value = winword.exe

Value = hypertrm.exe

Value = winword.exe

Value = notepad.exe

Indexed retrieval using the Values property: Values[2] = winword.exe

Key = bmp

Key = dib

Key = doc

Key = ht

Key = rtf

Key = txt

Indexed retrieval using the Keys property: Keys[2] = doc

Remove("doc")

Key "doc" is not found.

 */

기초를 튼튼히!! MSDN을 꾸준히!!!