.net中的Dictionary字典类的使用方法

//定义字典  
 
Dictionary<string, string> d = new Dictionary<string, string>();  
 
//添加字典的元素  
 
for (int i = ; i < ; i++)  
 
{  
 
    d.Add("key" + i, "value" + i);  
 
}  
 
//取值/赋值  
 
string val = d["key1"];  
 
d["key1"] = "new value";  
 
//遍历key  
 
foreach (string key in d.Keys)  
 
{  
 
    Console.WriteLine("Key = {0}", key);  
 
}  
 
//遍历value  
 
foreach (string v in d.Values)  
 
{  
 
    Console.WriteLine("value = {0}", v);  
 
}  
 
//遍历value, Second Method  
 
Dictionary<string, string>.ValueCollection valueColl = d.Values;  
 
foreach (string s in valueColl)  
 
{  
 
    Console.WriteLine("Second Method, Value = {0}", s);  
 
}  
 
//遍历字典  
 
foreach (KeyValuePair<string, string> kvp in d)  
 
{  
 
    Console.WriteLine("Key = {0}, Value = {1}", kvp.Key, kvp.Value);  
 
}  
 
//删除元素  
 
d.Remove("key1");  
 
if (!d.ContainsKey("key1"))  
 
{  
 
    Console.WriteLine("Key \"key1\" is not found.");  
 
}  
 
//判断键存在  
 
if (d.ContainsKey("key1")) // True   
 
{  
 
    Console.WriteLine("An element with Key = \"key1\" exists.");  
 
}