C # code execution at intervals (multithreading)

Summarize the following three methods to implement c # code execution at intervals:

Method 1: Call the thread execution method to implement an endless loop in the method. Set the Sleep time for each loop;

Method 2: Use the System. Timers. Timer class;

Method 3: Use System. Threading. Timer;

01 using System; 02 using System.Collections; 03 using System.Threading; 04   05 public class Test 06 { 07   08      public static void Main() 09      { 10          Test obj = new Test(); 11          Console.WriteLine(Thread.CurrentThread.ManagedThreadId.ToString()); 12   13          // Method 1: Call the thread execution method to implement an endless loop in the method, and set the time for each loop Sleep 14          Thread thread = new Thread( new ThreadStart(obj.Method1)); 15          thread.Start(); 16   17   18          // Method 2: Use the System. Timers. Timer class 19          System.Timers.Timer t = new System.Timers.Timer(100); // Instantiate the Timer class and set the time interval 20          t.Elapsed += new System.Timers.ElapsedEventHandler(obj.Method2); // Execute the event at the time of arrival 21          t.AutoReset = true ; // Set whether to execute once (false) or always execute (true) 22          t.Enabled = true ; // Whether to execute the System. Timers. Timer. Elapsed event 23          while ( true ) 24          { 25              Console.WriteLine( "test_" + Thread.CurrentThread.ManagedThreadId.ToString());