Queue.Clone() Method in C#
Last Updated :
11 Jul, 2025
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This method is used to create a shallow copy of the Queue. It just creates a copy of the Queue. The copy will have a reference to a clone of the internal elements but not a reference to the original elements.
csharp
csharp
Syntax: public virtual object Clone (); Return Value: The method returns an Object which is just the shallow copy of the Queue.Example 1: Let's see an example without using a Clone() method and directly copying a Queue using assignment operator '='. In the below code, we can see even if we Dequeue() elements from myQueue2, contents of myQueue is also changed. This is because '=' just assigns the reference of myQueue to myQueue2 and does not create any new Queue. But Clone() creates a new Queue.
// C# program to Copy a Queue using
// the assignment operator
using System;
using System.Collections;
class GFG {
// Main Method
public static void Main(string[] args)
{
Queue myQueue = new Queue();
myQueue.Enqueue("Geeks");
myQueue.Enqueue("Class");
myQueue.Enqueue("Noida");
myQueue.Enqueue("UP");
// Creating a copy using the
// assignment operator.
Queue myQueue2 = myQueue;
myQueue2.Dequeue();
PrintValues(myQueue);
}
public static void PrintValues(IEnumerable myCollection)
{
// This method prints all the
// elements in the Stack.
foreach(Object obj in myCollection)
Console.WriteLine(obj);
}
}
Output:
Example 2: Here myQueue is unchanged.
Class Noida UP
// C# program to illustrate the use
// of Object.Clone() Method
using System;
using System.Collections;
class GFG {
// Main Method
public static void Main(string[] args)
{
Queue myQueue = new Queue();
myQueue.Enqueue("Geeks");
myQueue.Enqueue("Class");
myQueue.Enqueue("Noida");
myQueue.Enqueue("UP");
// Creating copy using Clone() method.
Queue myQueue2 = (Queue)myQueue.Clone();
myQueue2.Dequeue();
PrintValues(myQueue);
}
public static void PrintValues(IEnumerable myCollection)
{
// This method prints all the
// elements in the Stack.
foreach(Object obj in myCollection)
Console.WriteLine(obj);
Console.WriteLine();
}
}
Output:
Reference:
Geeks Class Noida UP
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