C# | Check if the StringCollection is read-only Last Updated : 01 Feb, 2019 Improve Improve Like Article Like Save Share Report StringCollection class is a new addition to the .NET Framework class library that represents a collection of strings. StringCollection class is defined in the System.Collections.Specialized namespace. StringCollection.IsReadOnly property is used to get a value indicating whether the StringCollection is read-only or not. Syntax: public bool IsReadOnly { get; } Return Value: This property always returns false. Note: A collection that is read-only does not allow the addition, removal, or modification of elements after the collection is created. Retrieving the value of this property is an O(1) operation. Example: // C# code to check if the // StringCollection is read-only using System; using System.Collections; using System.Collections.Specialized; class GFG { // Driver code public static void Main() { // creating a StringCollection named myCol StringCollection myCol = new StringCollection(); // creating a string array named myArr String[] myArr = new String[] { "A", "B", "C", "D", "E" }; // Copying the elements of a string // array to the end of the StringCollection. myCol.AddRange(myArr); // checking if StringCollection is // read-only Console.WriteLine(myCol.IsReadOnly); } } Output: False Reference: https://docs.microsoft.com/en-us/dotnet/api/system.collections.specialized.stringcollection.isreadonly?view=netframework-4.7.2 Like Article Suggest improvement Previous C# | Insert into OrderedDictionary with key and value at specified index Next C# | Index of first occurrence in StringCollection Share your thoughts in the comments Add Your Comment Please Login to comment...