赵云头像:C# Dictionary 用法
来源:百度文库 编辑:九乡新闻网 时间:2024/07/14 03:40:24
C# Dictionary 用法
using System;
using System.Collections.Generic;
class DictionaryDemo
{
static void Main(string[] args)
{
DictionaryDemo001();
Console.ReadLine();
DictionaryDemo002();
Console.ReadLine();
DictionaryDemo003();
Console.ReadLine();
}
///
/// 一般用法
///
static void DictionaryDemo001()
{
Dictionary
dict.Add(1, "111");
dict.Add(2, "222");
//判断是否存在相应的key并显示
if (dict.ContainsKey(2))
{
Console.WriteLine(dict[2]);
}
//遍历Keys
foreach (var item in dict.Keys)
{
Console.WriteLine("Key:{0}", item);
}
//遍历Values
foreach (var item in dict.Values)
{
Console.WriteLine("value:{0}", item);
}
//遍历整个字典
foreach (var item in dict)
{
Console.WriteLine("key:{0} value:{1}", item.Key, item.Value);
}
}
///
/// 参数为其它类型
///
static void DictionaryDemo002()
{
Dictionary
dict.Add("1", "1,11,111".Split(','));
dict.Add("2", "2,22,222".Split(','));
Console.WriteLine(dict["2"][2]);
}
///
/// 调用自定义类
///
static void DictionaryDemo003()
{
Dictionary
for (int i = 0; i < 10; i++)
{
yongfa365 y = new yongfa365();
y.UserCode = i;
y.UserName = "www.yongfa365.com " + i.ToString();
dict.Add(i, y);
}
foreach (var item in dict)
{
Console.WriteLine("{0} One:{1} UserName:{2}", item.Key, item.Value.UserCode, item.Value.UserName);
}
}
}
class yongfa365
{
public int UserCode { get; set; }
public string UserName { get; set; }