Skip to content
Related Articles
Open in App
Not now

Related Articles

C# | Check if ListDictionary is read-only

Improve Article
Save Article
Like Article
  • Last Updated : 01 Feb, 2019
Improve Article
Save Article
Like Article

ListDictionary.IsReadOnly property is used to get a value indicating whether the ListDictionary is read-only or not.


public bool IsReadOnly { get; }

Return Value : This property always returns false.


// C# code to check if ListDictionary is read-only
using System;
using System.Collections;
using System.Collections.Specialized;
class GFG {
    // Driver code
    public static void Main()
        // Creating a ListDictionary named myDict
        ListDictionary myDict = new ListDictionary();
        myDict.Add("Australia", "Canberra");
        myDict.Add("Belgium", "Brussels");
        myDict.Add("Netherlands", "Amsterdam");
        myDict.Add("China", "Beijing");
        myDict.Add("Russia", "Moscow");
        myDict.Add("India", "New Delhi");
        // Checking if ListDictionary is read-only




  • A collection that is read-only does not allow the addition, removal, or modification of elements after the collection is created.
  • A collection that is read-only is simply a collection with a wrapper that prevents modifying the collection. Therefore, if changes are made to the underlying collection, the read-only collection reflects those changes.
  • Retrieving the value of this property is an O(1) operation.


My Personal Notes arrow_drop_up
Like Article
Save Article
Related Articles

Start Your Coding Journey Now!