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C# | Getting the unique identifier for the current managed thread
  • Last Updated : 01 Feb, 2019

A Thread class is responsible for creating and managing a thread in multi-thread programming. It provides a property known as ManagedThreadId to check the unique identifier for the current managed thread. Or in other words, the value of ManagedThreadId property of a thread defines uniquely that thread within its process. The value of the ManagedThreadId property does not vary according to time.

Syntax:

public int ManagedThreadId { get; }

Return Value: This property returns a value that indicates a unique identifier for this managed thread. The return type of this property is System.Int32.

Example 1:




// C# program to illustrate the 
// use of ManagedThreadId property
using System;
using System.Threading;
  
public class GFG {
  
    // Main Method
    static public void Main()
    {
        Thread T;
  
        // Get the reference of main Thread
        // Using CurrentThread property
        T = Thread.CurrentThread;
  
        // Display the unique id of the main 
        // thread Using ManagedThreadId property
        Console.WriteLine("The unique id of the main "+
                 "thread is: {0} ", T.ManagedThreadId);
    }
}

Output:



The unique id of the main thread is: 1 

Example 2:




// C# program to illustrate the 
// use of ManagedThreadId property
using System;
using System.Threading;
  
public class GFG {
  
    // Main method
    public static void Main()
    {
        // Creating and initializing threads
        Thread thr1 = new Thread(new ThreadStart(job));
        Thread thr2 = new Thread(new ThreadStart(job));
        Thread thr3 = new Thread(new ThreadStart(job));
  
        Console.WriteLine("ManagedThreadId of thread 1 "+
                        "is: {0}", thr1.ManagedThreadId);
  
        Console.WriteLine("ManagedThreadId of thread 2 "+
                        "is: {0}", thr2.ManagedThreadId);
  
        Console.WriteLine("ManagedThreadId of thread 3 "+
                        "is: {0}", thr3.ManagedThreadId);
  
        // Running state
        thr1.Start();
        thr2.Start();
        thr3.Start();
    }
  
    // Static method
    public static void job()
    {
        Thread.Sleep(2000);
    }
}

Output:

ManagedThreadId of thread 1 is: 3
ManagedThreadId of thread 2 is: 4
ManagedThreadId of thread 3 is: 5

Reference:

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