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📜  C＃6.0 字典初始化器

📅  最后修改于: 2020-11-01 03:08:28             🧑  作者: Mango

C＃字典初始化器

C＃字典初始化程序是一项用于初始化字典元素的功能。字典是元素的集合。它在键和值对中存储元素。

字典初始化程序使用花括号({})括起键和值对。

让我们看一个例子，其中我们初始化每个键的值。

C＃字典初始化程序示例1

using System;
using System.Collections.Generic;
namespace CSharpFeatures
{
    class DictionaryInitializer
    {
        public static void Main(string[] args)
        {
            Dictionary dictionary = new Dictionary()
            {
                [1] = "Irfan",
                [2] = "Ravi",
                [3] = "Peter"
            };
            foreach (KeyValuePair kv in dictionary)
            {
                Console.WriteLine("{ Key = " + kv.Key + " Value = " +kv.Value+" }");
            }
        }
    }
}

输出：

{ Key = 1 Value = Irfan }
{ Key = 2 Value = Ravi }
{ Key = 3 Value = Peter }

在此示例中，我们将学生数据存储到字典中。我们正在使用字典初始化程序来存储学生数据。请参见以下示例。

C＃字典初始化程序示例2

using System;
using System.Collections.Generic;
namespace CSharpFeatures
{
    class Student
    {
        public int ID { get; set; }
        public string Name { get; set; }
        public string Email { get; set; }
    }
    class DictionaryInitializer
    {
        public static void Main(string[] args)
        {
            Dictionary dictionary = new Dictionary()
            {
                { 1, new Student(){ ID = 101, Name = "Rahul Kumar", Email = "rahul@example.com"} },
                { 2, new Student(){ ID = 102, Name = "Peter", Email = "peter@example.com"} },
                { 3, new Student(){ ID = 103, Name = "Irfan", Email = "irfan@abc.com"} }
            };
            foreach (KeyValuePair kv in dictionary)
            {
                Console.WriteLine("Key = "+kv.Key + " Value = {" + kv.Value.ID +", "+ kv.Value.Name +", "+kv.Value.Email+"}");
            }
        }
    }
}

输出：

Key = 1 Value = {101, Rahul Kumar, rahul@example.com}
Key = 2 Value = {102, Peter, peter@example.com}
Key = 3 Value = {103, Irfan, irfan@abc.com}