C# | Check if the StringCollection is read-only

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

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