Stack.CopyTo() Method in C#

The Stack.CopyTo() method in C# is used to copy the Stack to an existing one-dimensional Array, beginning at the specified array index.

Syntax

The syntax is as follows −

public virtual void CopyTo (Array arr, int index);

Above, the parameter arr is the one-dimensional Array that is the destination of the elements copied from Stack, whereas the index is the index at which the copy initiates.

Example

Let us now see an example −

 Live Demo

using System;
using System.Collections;
public class Demo {
   public static void Main(){
      Stack stack = new Stack();
      stack.Push(150);
      stack.Push(300);
      stack.Push(500);
      stack.Push(750);
      stack.Push(1000);
      stack.Push(1250);
      stack.Push(1500);
      stack.Push(2000);
      stack.Push(2500);
      Console.WriteLine("Stack elements...");
      foreach(int val in stack){
         Console.WriteLine(val);
      }
      Console.WriteLine("Count of elements = "+stack.Count);
      Console.WriteLine("Element 750 is the stack? = "+stack.Contains(750));
      stack.Push(3000);
      Console.WriteLine("
Stack elements...updated");
      foreach(int val in stack)
      {
         Console.WriteLine(val);
      }
      Console.WriteLine("Count of elements (updated) = "+stack.Count);
      Console.WriteLine("Element 5000 is the stack? = "+stack.Contains(5000));
      Stack stack2 = (Stack)stack.Clone();
      Console.WriteLine("
Stack elements...cloned");
      foreach(int val in stack2){
         Console.WriteLine(val);
      }
      Console.WriteLine("Count of elements (updated) = "+stack2.Count);
      Console.WriteLine("
Copying the cloned stack to an integer array...");
      int[] intArr = new int[stack2.Count];
      stack2.CopyTo(intArr, 0);
      foreach(int j in intArr){
         Console.WriteLine(j);
      }
   }
}

Output

This will produce the following output −

Stack elements...
2500
2000
1500
1250
1000
750
500
300
150
Count of elements = 9
Element 750 is the stack? = True
Stack elements...updated
3000
2500
2000
1500
1250
1000
750
500
300
150
Count of elements (updated) = 10
Element 5000 is the stack? = False
Stack elements...cloned
3000
2500
2000
1500
1250
1000
750
500
300
150
Count of elements (updated) = 10
Copying the cloned stack to an integer array...
3000
2500
2000
1500
1250
1000
750
500
300
150

Example

Let us now see another example −

 Live Demo

using System;
using System.Collections;
public class Demo {
   public static void Main(){
      Stack stack = new Stack();
      stack.Push("Projectors");
      stack.Push("Monitors");
      stack.Push("XPS");
      stack.Push("Laptop");
      stack.Push("Notebook");
      Console.WriteLine("Stack elements...");
      foreach(string val in stack){
         Console.WriteLine(val);
      }
      Console.WriteLine("Count of elements = "+stack.Count);
      Console.WriteLine("Element XPS is the stack? = "+stack.Contains("XPS"));
      stack.Push("Ultrabook");
      Console.WriteLine("
Stack elements...updated");
      foreach(string val in stack){
         Console.WriteLine(val);
      }
      Console.WriteLine("Count of elements (updated) = "+stack.Count);
      Console.WriteLine("Element Ultrabook is the stack? = "+stack.Contains("Ultrabook"));
      Stack stack2 = (Stack)stack.Clone();
      Console.WriteLine("
Stack elements...cloned");
      foreach(string val in stack2){
         Console.WriteLine(val);
      }
      Console.WriteLine("Count of elements (updated) = "+stack2.Count);
      Console.WriteLine("
Copying the cloned stack to a string array...");
      string[] strArr = new string[stack2.Count];
      stack2.CopyTo(strArr, 0);
      foreach(string j in strArr){
         Console.WriteLine(j);
      }
   }
}

Output

This will produce the following output −

Stack elements...
Notebook
Laptop
XPS
Monitors
Projectors
Count of elements = 5
Element XPS is the stack? = True
Stack elements...updated
Ultrabook
Notebook
Laptop
XPS
Monitors
Projectors
Count of elements (updated) = 6
Element Ultrabook is the stack? = True
Stack elements...cloned
Ultrabook
Notebook
Laptop
XPS
Monitors
Projectors
Count of elements (updated) = 6
Copying the cloned stack to a string array...
Ultrabook
Notebook
Laptop
XPS
Monitors
Projectors