Dictionary.Add() 方法
Dictionary.Add() 方法用于向字典中添加指定键值。
语法
语法如下:
public void Add (TKey key, TValue val);
上述代码中,key 参数是键,而 Val 是元素值。
示例
现在,让我们看一个实现 Dictionary.Add() 方法的示例:
using System; using System.Collections.Generic; public class Demo { public static void Main(){ Dictionary<string, string> dict = new Dictionary<string, string>(); dict.Add("One", "John"); dict.Add("Two", "Tom"); dict.Add("Three", "Jacob"); dict.Add("Four", "Kevin"); dict.Add("Five", "Nathan"); Console.WriteLine("Key/value pairs..."); foreach(KeyValuePair<string, string> res in dict){ Console.WriteLine("Key = {0}, Value = {1}", res.Key, res.Value); } } }
输出
将生成以下输出:
Key/value pairs... Key = One, Value = John Key = Two, Value = Tom Key = Three, Value = Jacob Key = Four, Value = Kevin Key = Five, Value = Nathan
示例
现在,让我们看另一个实现 Dictionary.Add() 方法的示例:
using System; using System.Collections.Generic; public class Demo { public static void Main(){ Dictionary<string, string> dict = new Dictionary<string, string>(); dict.Add("One", "John"); dict.Add("Two", "Tom"); dict.Add("Three", "Jacob"); dict.Add("Four", "Kevin"); dict.Add("Five", "Nathan"); Console.WriteLine("Count of elements = "+dict.Count); dict.Add("Six", "Anne"); dict.Add("Seven", "Katie"); Console.WriteLine("Count of elements (updated) = "+dict.Count); Console.WriteLine("Key/value pairs..."); foreach(KeyValuePair<string, string> res in dict){ Console.WriteLine("Key = {0}, Value = {1}", res.Key, res.Value); } } }
输出
将生成以下输出:
Count of elements = 5 Count of elements (updated) = 7 Key/value pairs... Key = One, Value = John Key = Two, Value = Tom Key = Three, Value = Jacob Key = Four, Value = Kevin Key = Five, Value = Nathan Key = Six, Value = Anne Key = Seven, Value = Katie
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