C# | Check if the BitArray is read-only

C# | Check if Hashtable is read-only

Last Updated : 01 Feb, 2019

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

public virtual bool IsReadOnly { get; }

Return Value: This property returns true if the Hashtable is read-only otherwise it returns false. The default is false. Below programs illustrate the above-discussed property: Example 1:

CSharp

// C# code to check if Hashtable
// is read-only or not
using System;
using System.Collections;

class GFG {

    // Driver code
    public static void Main()
    {

        // Creating a Hashtable
        Hashtable myTable = new Hashtable();

        // Adding elements in Hashtable
        myTable.Add("G", "Geeks");
        myTable.Add("C", "C#");
        myTable.Add("D", "Data Structures");
        myTable.Add("Q", "Quiz");

        // Checking if Hashtable is read-only or not
        // this will return false
        Console.WriteLine(myTable.IsReadOnly);
    }
}

Output:

False

Example 2:

CSharp

// C# code to check if Hashtable
// is read-only or not
using System;
using System.Collections;

class GFG {

    // Driver code
    public static void Main()
    {

        // Creating a Hashtable
        Hashtable myTable = new Hashtable();

        // Adding elements in Hashtable
        myTable.Add("1", "C");
        myTable.Add("2", "C#");
        myTable.Add("3", "C++");
        myTable.Add("4", "HTML");
        myTable.Add("5", "CSS");

        // Checking if Hashtable is read-only or not
        // this will return false
        Console.WriteLine(myTable.IsReadOnly);
    }
}

Output:

False

Note:

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.

Reference:

https://docs.microsoft.com/en-us/dotnet/api/system.collections.hashtable.isreadonly?view=netframework-4.7.2

C# | Check if the BitArray is read-only

K

Kirti_Mangal

Improve

Article Tags :

Similar Reads

C# | Check if Hashtable is synchronized (thread safe)

Hashtable.IsSynchronized Property is used to get a value indicating whether access to the Hashtable is synchronized(thread-safe). Syntax: public virtual bool IsSynchronized { get; } Return Value: This property return true if access to the Hashtable is synchronized (thread-safe), otherwise it returns

C# | Check if HybridDictionary is read only

HybridDictionary.IsReadOnly property is used to get a value that indicates whether the HybridDictionary is read-only or not. Syntax: public bool IsReadOnly { get; } Return Value: This property always returns false. Below programs illustrate the use of HybridDictionary.IsReadOnly property: Example 1:

C# | Check if a SortedList is read-only

SortedList class is a collection of (key, value) pairs which are sorted according to keys. Those pairs can be accessible by key and as well as by index(zero-based indexing). This comes under System.Collections namespace. SortedList.IsReadOnly property is used to get a value which indicates that a So

C# | Check if the BitArray is read-only

The BitArray class manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on i.e, 1 and false indicates the bit is off i.e, 0. This class is contained in System.Collections namespace. BitArray.IsReadOnly property is used to get a value indicati

C# | Check if Hashtable has a fixed size

Hashtable.IsFixedSize Property is used to get a value which indicates whether the Hashtable has a fixed size or not. Syntax: public virtual bool IsFixedSize { get; } Return Value: This property returns true if the Hashtable has a fixed size otherwise it returns false. The default is false. Below pro

C# | Check if the ArrayList is read-only

ArrayList represents an ordered collection of an object that can be indexed individually. It is basically an alternative to an array. It also allows dynamic memory allocation, adding, searching and sorting items in the list. ArrayList.IsReadOnly property is used to check whether the ArrayList is rea

C# | Check if ListDictionary is read-only

ListDictionary.IsReadOnly property is used to get a value indicating whether the ListDictionary is read-only or not. Syntax: public bool IsReadOnly { get; } Return Value : This property always returns false. Example: CSHARP // C# code to check if ListDictionary is read-only using System; using Syste

C# | Check if an array is read-only or not

Array.IsReadOnly Property is used to get a value that indicates whether the Array is read-only or not. Syntax: public bool IsReadOnly { get; } Property Value: This property always returns false for all arrays. Below programs illustrate the use of above-discussed property: Example 1: CSharp // C# pro

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

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