要在C#中创建ArrayList的浅表副本,代码如下-
using System; using System.Collections; public class Demo { public static void Main(){ ArrayList list = new ArrayList(); list.Add("One"); list.Add("Two"); list.Add("Three"); list.Add("Four"); list.Add("Five"); list.Add("Six"); list.Add("Seven"); list.Add("Eight"); Console.WriteLine("ArrayList elements..."); foreach(string str in list){ Console.WriteLine(str); } Console.WriteLine("ArrayList is read-only? = "+list.IsReadOnly); Console.WriteLine("Does the element Six in the ArrayList? = "+list.Contains("Six")); list.Insert(4, "Twelve"); Console.WriteLine("\nArrayList elements...UPDATED"); foreach(string str in list){ Console.WriteLine(str); } ArrayList list2 = new ArrayList(); list2 = (ArrayList)list.Clone(); Console.WriteLine("\nCloned ArrayList..."); foreach(string str in list2){ Console.WriteLine(str); } } }
输出结果
这将产生以下输出-
ArrayList elements... One Two Three Four Five Six Seven Eight ArrayList is read-only? = False Does the element Six in the ArrayList? = True ArrayList elements...UPDATED One Two Three Four Twelve Five Six Seven Eight Cloned ArrayList... One Two Three Four Twelve Five Six Seven Eight
现在让我们来看另一个示例-
using System; using System.Collections; public class Demo { public static void Main(String[] args){ ArrayList list1 = new ArrayList(); list1.Add("A"); list1.Add("B"); list1.Add("C"); list1.Add("D"); list1.Add("E"); list1.Add("F"); list1.Add("G"); list1.Add("H"); list1.Add("I"); Console.WriteLine("Elements in ArrayList1..."); foreach (string res in list1){ Console.WriteLine(res); } ArrayList list2 = new ArrayList(); list2.Add("A"); list2.Add("B"); list2.Add("C"); list2.Add("D"); list2.Add("E"); list2.Add("F"); list2.Add("G"); list2.Add("H"); list2.Add("I"); list2.Add("G"); list2.Add("I"); Console.WriteLine("Elements in ArrayList2..."); foreach (string res in list2){ Console.WriteLine(res); } Console.WriteLine("Count of elements in ArrayList2 = " + list2.Count); list2.Remove("G"); Console.WriteLine("Elements in ArrayList2... (UPDATED)"); foreach (string res in list2){ Console.WriteLine(res); } Console.WriteLine("Count of elements in ArrayList2 (Updated) = " + list2.Count); ArrayList list3 = new ArrayList(); list3 = (ArrayList)list2.Clone(); Console.WriteLine("\nCloned ArrayList from ArrayList2..."); foreach(string str in list3){ Console.WriteLine(str); } } }
输出结果
这将产生以下输出-
Elements in ArrayList1... A B C D E F G H I Elements in ArrayList2... A B C D E F G H I G I Count of elements in ArrayList2 = 11 Elements in ArrayList2... (UPDATED) A B C D E F H I G I Count of elements in ArrayList2 (Updated) = 10 Cloned ArrayList from ArrayList2... A B C D E F H I G I