Stack.Synchronized() Method in C# (original) (raw)

Last Updated : 04 Feb, 2019

This method(comes under System.Collections Namespace) is used to return a synchronized (thread safe) wrapper for the Stack. To guarantee the thread safety of the Stack, all operations must be done through this wrapper.Syntax:

public static System.Collections.Stack Synchronized (System.Collections.Stack stack);

Return Value: It returns synchronized wrapper around the Stack.Exception: This method will give ArgumentNullException if the stack is null. Below programs illustrate the use of above-discussed method:Example 1:

csharp `

// C# code to illustrate the // Stack.Synchronized() Method using System; using System.Collections;

class GFG {

// Driver code
public static void Main()
{

    // Creating a Stack
    Stack myStack = new Stack();

    // Inserting the elements into the Stack
    myStack.Push("Geeks");
    myStack.Push("Geeks Classes");
    myStack.Push("Noida");
    myStack.Push("Data Structures");
    myStack.Push("GeeksforGeeks");

    // Creates a synchronized
    // wrapper around the Stack
    Stack st = Stack.Synchronized(myStack);

    // Displays the synchronization
    // status of both Stack
    Console.WriteLine("myStack is {0}.", myStack.IsSynchronized ?
                            "Synchronized" : "Not Synchronized");

    Console.WriteLine("st is {0}.", st.IsSynchronized ? 
                  "Synchronized" : "Not Synchronized");
}

}

Output:

myStack is Not Synchronized. st is Synchronized.

Example 2:

csharp `

// C# code to illustrate the // Stack.Synchronized() Method using System; using System.Collections;

class GFG {

// Driver code
public static void Main()
{

    // Creating a Stack
    Stack myStack = new Stack();

    // Inserting the elements into the Stack
    myStack.Push("C");
    myStack.Push("C++");
    myStack.Push("Java");
    myStack.Push("C#");
    myStack.Push("Python");

    // it will give error as
    // the parameter is null
    Stack sq = Stack.Synchronized(null);
}

}

Runtime Error:

Unhandled Exception: System.ArgumentNullException: Value cannot be null. Parameter name: stack

Reference:

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

Stack.Synchronized() Method in C# (original) (raw)

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