C# 程序访问字典中的第一个元素
csharpprogrammingserver side programming更新于 2025/9/14 20:59:00
以下是我们的字典，其中包含一些元素 −
Dictionary<int, string> d = new Dictionary<int, string>() {
{1,"Electronics"},
{2, "Clothing"},
{3,"Toys"},
{4,"Footwear"},
{5, "Accessories"}
};
现在要显示第一个元素，请像这样设置键。
d[1];
以上显示第一个元素。
示例
using System;
using System.Collections.Generic;
public class Program {
public static void Main() {
Dictionary<int, string> d = new Dictionary<int, string>() {
{1,"Electronics"},
{2, "Clothing"},
{3,"Toys"},
{4,"Footwear"},
{5, "Accessories"}
};
foreach (KeyValuePair<int, string> ele in d) {
Console.WriteLine("Key = {0}, Value = {1}", ele.Key, ele.Value);
}
Console.WriteLine("First element: "+d[1]);
}
}
输出
Key = 1, Value = Electronics Key = 2, Value = Clothing Key = 3, Value = Toys Key = 4, Value = Footwear Key = 5, Value = Accessories First element: Electronics
