C# | Get a read-only copy of the OrderedDictionary Last Updated : 01 Feb, 2019 Comments Improve Suggest changes Like Article Like Report OrderedDictionary.AsReadOnly method returns a read-only copy of the current OrderedDictionary collection. Syntax: public System.Collections.Specialized.OrderedDictionary AsReadOnly (); Return Value: A read-only copy of the current OrderedDictionary collection. Below given are some examples to understand the implementation in a better way: Example 1: CSHARP // C# code to get a read-only // copy of the OrderedDictionary using System; using System.Collections; using System.Collections.Specialized; class GFG { // Driver method public static void Main() { // Creating a orderedDictionary named myDict OrderedDictionary myDict = new OrderedDictionary(); // Adding key and value in myDict myDict.Add("key1", "value1"); myDict.Add("key2", "value2"); myDict.Add("key3", "value3"); myDict.Add("key4", "value4"); myDict.Add("key5", "value5"); // To Get a read-only copy of // the OrderedDictionary OrderedDictionary myDict_1 = myDict.AsReadOnly(); // Checking if myDict_1 is read-only Console.WriteLine(myDict_1.IsReadOnly); } } Output: True Example 2: CSHARP // C# code to get a read-only // copy of the OrderedDictionary using System; using System.Collections; using System.Collections.Specialized; class GFG { // Driver method public static void Main() { // Creating a orderedDictionary named myDict OrderedDictionary myDict = new OrderedDictionary(); // Adding key and value in myDict myDict.Add("A", "Apple"); myDict.Add("B", "Banana"); myDict.Add("C", "Cat"); myDict.Add("D", "Dog"); // To Get a read-only copy of // the OrderedDictionary OrderedDictionary myDict_1 = myDict.AsReadOnly(); // Checking if myDict_1 is read-only Console.WriteLine(myDict_1.IsReadOnly); } } Output: True Note: The AsReadOnly method creates a read-only wrapper around the current OrderedDictionary collection. Changes made to the OrderedDictionary collection are reflected in the read-only copy. Reference: https://docs.microsoft.com/en-us/dotnet/api/system.collections.specialized.ordereddictionary.asreadonly?view=netframework-4.7.2 Comment More infoAdvertise with us Next Article C# | Get a read-only copy of the OrderedDictionary S Sahil_Bansall Follow Improve Article Tags : C# CSharp-method CSharp-Specialized-Namespace CSharp-Specialized-OrderedDictionary Similar Reads C# | Check if OrderedDictionary collection is read-only OrderedDictionary.IsReadOnly property is used to get a value that indicates whether the OrderedDictionary collection is read-only or not. Syntax : public bool IsReadOnly { get; } Return Value: This property returns True if the OrderedDictionary collection is read-only, otherwise, False. The default 2 min read How to create an OrderedDictionary in C# OrderedDictionary() constructor is used to initialize a new instance of the OrderedDictionary class which will be empty and will have the default initial capacity. OrderedDictionary Class represents a collection of key/value pairs that are accessible by the key or index. It is present in System.Coll 2 min read C# | Remove all elements from OrderedDictionary OrderedDictionary.Clear method is used to remove all elements from the OrderedDictionary collection. Syntax: public void Clear (); Exception: If the OrderedDictionary collection is read-only then it will throw NotSupportedException. Below given are some examples to understand the implementation in a 2 min read C# | Remove the entry at specified index from OrderedDictionary OrderedDictionary.RemoveAt(Int32) method is used to remove the entry at the specified index from the OrderedDictionary collection. Syntax: public void RemoveAt (int index); Here, index is the zero-based index of the entry to remove. Exceptions: NotSupportedException : If the OrderedDictionary collec 3 min read C# | Add key and value into OrderedDictionary collection OrderedDictionary.Add(Object, Object) method is used to add an entry with the specified key and value into the OrderedDictionary collection with the lowest available index. Syntax: public void Add (object key, object value); Parameters: key : The key of the entry to add. value : The value of the ent 2 min read Like