Question

我有项目，我想将它们添加到Dictionary而不使用Add方法（因为它消耗了多少行）。有没有办法将项目添加到词典中

new List<string>() { "P","J","K","L","M" };

或类似List中的AddRange方法。任何帮助都会得到高度的关注。

Answer 1

引自here

 Dictionary<int, StudentName> students = new Dictionary<int, StudentName>()
 {
   { 111, new StudentName {FirstName="Sachin", LastName="Karnik", ID=211}},
   { 112, new StudentName {FirstName="Dina", LastName="Salimzianova", ID=317}},
   { 113, new StudentName {FirstName="Andy", LastName="Ruth", ID=198}}
};

Answer 2

您可以轻松创建一个为您的字典执行AddRange的扩展方法

namespace System.Collections.Generic
{
    public static class DicExt
    {
        public static void AddRange<K, V>(this Dictionary<K, V> dic, IEnumerable<K> keys, V v)
        {
            foreach (var k in keys)
                dic[k] = v;
        }
    }
}

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {

            var list  = new List<string>() { "P", "J", "K", "L", "M" };
            var dic = new Dictionary<string, bool>();

            dic.AddRange(list, true);


            Console.Read();

        }
    }
}

Answer 3

就像

一样简单

var dictionary = new Dictionary<int, string>() {{1, "firstString"},{2,"secondString"}};

不使用C＃中的Add方法将项添加到Dictionary

3 个答案: