如何在C＃中向字典添加多个值

本文介绍了如何在C＃中向字典添加多个值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 如果我不想多次调用 .Add（），向字典添加多个值的最佳方法是什么。 编辑：我想在启动后填写它！What is the best way to add multiple values to a Dictionary, if i dont want to call ".Add()" multiple times.Edit: I want to fill it after initiation! there are already some values in the Dictionary!因此，而不是 myDictionary.Add("a", "b"); myDictionary.Add("f", "v"); myDictionary.Add("s", "d"); myDictionary.Add("r", "m"); ...我想做这样的事情 myDictionary.Add(["a","b"], ["f","v"],["s","d"]);有办法吗？推荐答案您可以为此使用花括号，尽管这仅适用于初始化：You can use curly braces for that, though this only works for initialization:var myDictionary = new Dictionary<string, string>{ {"a", "b"}, {"f", "v"}, {"s", "d"}, {"r", "m"}};这称为集合初始化，适用于任何 ICollection< T> （请参阅链接了解字典或此链接（对于其他任何收集类型））。实际上，它适用于实现 IEnumerable 并包含 Add 方法的任何对象类型：This is called "collection initialization" and works for any ICollection<T> (see link for dictionaries or this link for any other collection type). In fact, it works for any object type that implements IEnumerable and contains an Add method:class Foo : IEnumerable{ public void Add<T1, T2, T3>(T1 t1, T2 t2, T3 t3) { } // ...}Foo foo = new Foo{ {1, 2, 3}, {2, 3, 4}};基本上，这只是调用 Add -方法反复。初始化后，有几种方法可以执行此操作，其中一种是手动调用 Add 方法：Basically this is just syntactic sugar for calling the Add-method repeatedly. After initialization there are a few ways to do this, one of them being calling the Add-methods manually:var myDictionary = new Dictionary<string, string> { {"a", "b"}, {"f", "v"} };var anotherDictionary = new Dictionary<string, string> { {"s", "d"}, {"r", "m"} };// Merge anotherDictionary into myDictionary, which may throw// (as usually) on duplicate keysforeach (var keyValuePair in anotherDictionary){ myDictionary.Add(keyValuePair.Key, keyValuePair.Value);}或作为扩展方法：static class DictionaryExtensions{ public static void Add<TKey, TValue>(this IDictionary<TKey, TValue> target, IDictionary<TKey, TValue> source) { if (source == null) throw new ArgumentNullException("source"); if (target == null) throw new ArgumentNullException("target"); foreach (var keyValuePair in source) { target.Add(keyValuePair.Key, keyValuePair.Value); } }}var myDictionary = new Dictionary<string, string> { {"a", "b"}, {"f", "v"} };myDictionary.Add(new Dictionary<string, string> { {"s", "d"}, {"r", "m"} }); 这篇关于如何在C＃中向字典添加多个值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！