C# 中的 foreach 循环
foreach 循环对实现 System.Collections.IEnumerable 或 System.Collections.Generic.IEnumerable<T> 接口的类型实例中的每个元素执行一个语句或一组语句。
示例
让我们看一个 foreach 循环的示例 −
using System; using System.Collections.Generic; public class Demo { public static void Main(){ LinkedList<int> linkedList = new LinkedList<int>(); linkedList.AddLast(25); linkedList.AddLast(50); linkedList.AddLast(100); linkedList.AddLast(200); linkedList.AddLast(400); linkedList.AddLast(500); linkedList.AddLast(550); linkedList.AddLast(600); linkedList.AddLast(800); linkedList.AddLast(1200); Console.WriteLine("Count of nodes = " + linkedList.Count); foreach(int val in linkedList){ Console.WriteLine(val); } Console.WriteLine("Does the LinkedList has node 800? "+linkedList.Contains(800)); } }
输出
这将产生以下输出 −
Count of nodes = 10 25 50 100 200 400 500 550 600 800 1200 Does the LinkedList has node 800? True
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