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Creating a read-only wrapper for the ArrayList in C#
To create a read-only wrapper for ArrayList, the code is as follows −
Example
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);
}
}Output
This will produce the following output −
ArrayList elements... One Two Three Four Five Six Seven Eight ArrayList is read-only? = False
Example
Let us now see another example −
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);
ArrayList list2 = ArrayList.ReadOnly(list);
Console.WriteLine("ArrayList is read-only now? = "+list2.IsReadOnly);
}
}Output
This will produce the following output −
ArrayList elements... One Two Three Four Five Six Seven Eight ArrayList is read-only? = False ArrayList is read-only now? = True
Updated on: 05-Dec-2019
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