C#でのDictionaryの使い方を詳しく解説

 System.Collections.Generic //程序集：mscorlib

 Dictionary<int,string> myDictionary=new Dictionary<int,string>();

myDictionary.Add(1,"C#");

myDictionary.Add(2,"C++");

myDictionary.Add(3,"ASP.NET");

myDictionary.Add(4,"MVC");

if(myDictionary.ContainsKey(1))

{

　　Console.WriteLine("Key:{0},Value:{1}","1", myDictionary[1]);

 }

foreach(KeyValuePair<int,string> kvp in myDictionary)

{

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

}

Dictionary<int,string>.KeyCollection keyCol = myDictionary.Keys;foreach(intkeyinkeyCol)

{

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

}

Dictionary<int,string>.ValueCollection valueCol = myDictionary.Values;foreach(stringvalueinvalueCol)

{

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

}

myDictionary.Remove(1);if(myDictionary.ContainsKey(1))

{

　　Console.WriteLine("Key:{0},Value:{1}","1", myDictionary[1]);

}else{

    Console.WriteLine("不存在 Key : 1"); 

 }