Multithreading (2) Thread, multithreading thread

Multithreading (2) Thread, multithreading thread

Let's start with the most basic Thread.

 

Create and start a thread

Create and start a thread with the following code:

1 namespace ConsoleApplication17 2 {3 class Program 4 {5 static void Main (string [] args) 6 {7 var thread = new Thread (PrintNumbers); 8 thread. start (); 9 10 Console. writeLine ("Thread Start... "); 11 Console. readKey (); 12} 13 14 // <summary> 15 // Method 16 that matches the delegate /// </summary> 17 public static void PrintNumbers () 18 {19 Console. writeLine ("Starting ...... "); 20 for (int I = 0; I <10; I ++) 21 {22 Console. writeLine (I); 23} 24} 25} 26}View Code

 

Running result:

 

Pause a thread

If you need to pause the current Thread, you can call the Thread. Sleep method to make the current Thread in a blocking state. The following code:

1 namespace ConsoleApplication17 2 {3 class Program 4 {5 static void Main (string [] args) 6 {7 var thread = new Thread (PrintNumbersWithDelay); 8 thread. start (); 9 10 Console. writeLine ("Thread Start... "); 11 Console. readKey (); 12} 13 14 /// <summary> 15 /// 16 /// </summary> 17 public static void PrintNumbersWithDelay () 18 {19 Console. writeLine ("Starting ...... "); 20 for (int I = 0; I <10; I ++) 21 {22 Thread. sleep (TimeSpan. fromMilliseconds (1000); 23 Console. writeLine (string. format ("{0} {1}", DateTime. now. toString ("yyyy-MM-dd HH: mm: ss"), I); 24} 25} 26} 27}View Code

 

Output result:

Merge thread

If you need to wait for a sub-Thread to execute a row before the main Thread continues execution, you can use the Thread. Join method to implement the following code:

1 namespace ConsoleApplication17 2 {3 class Program 4 {5 static void Main (string [] args) 6 {7 // Thread 8 var thread = new Thread (PrintNumbersWithDelay); 9 thread. start (); 10 thread. join (); 11 12 Console. writeLine ("Thread Completed! "); 13 Console. readKey (); 14} 15 16 /// <summary> 17 // 18 /// </summary> 19 public static void PrintNumbersWithDelay () 20 {21 Console. writeLine ("Starting ...... "); 22 for (int I = 0; I <10; I ++) 23 {24 Thread. sleep (TimeSpan. fromMilliseconds (1000); // The thread is blocked for 1 s, and the thread status is WaitSleepJoin25 Console. writeLine (string. format ("Current Time: {0}, thread status: {1}, result: {2}", DateTime. now. toString ("yyyy-MM-dd HH: mm: ss"), Thread. currentThread. threadState, I); 26} 27} 28} 29}View Code

Output result:

Terminate thread

If you force terminate a subthread when it is running, you can call the Thread. Abort method. This will trigger a ThreadAbortException exception for the current subthread and cause the Thread to be terminated!

The following code:

1 namespace ConsoleApplication17 2 {3 class Program 4 {5 static void Main (string [] args) 6 {7 Console. writeLine ("Starting Program... "); 8 var thread = new Thread (PrintNumbersWithDelay); 9 thread. start (); 10 11 Thread. sleep (TimeSpan. fromMilliseconds (6000); 12 thread. abort (); 13 14 Console. writeLine ("Thread has been abort! "); 15 Console. readKey (); 16} 17 18 // <summary> 19 // 20 /// </summary> 21 public static void PrintNumbersWithDelay () 22 {23 Console. writeLine ("Starting ...... "); 24 for (int I = 0; I <10; I ++) 25 {26 Thread. sleep (TimeSpan. fromMilliseconds (1000); 27 Console. writeLine (string. format ("Current Time: {0}, thread status: {1}, result: {2}", DateTime. now. toString ("yyyy-MM-dd HH: mm: ss"), Thread. currentThread. threadState, I); 28} 29} 30} 31}View Code thread passing Parameters

Through analysis, we can find that the Thread actually accepts a delegate, including a non-parameter delegate and an Object-type delegate,

 

The following code:

1 namespace ConsoleApplication17 2 {3 class Program 4 {5 static void Main (string [] args) 6 {7 Console. writeLine ("Main thread starting... "); 8 var thread = new Thread (PrintNumbersWithCount); 9 thread. start (5); 10 thread. join (); 11 12 Console. writeLine ("Main thread completed! "); 13 Console. readKey (); 14} 15 16 /// <summary> 17 // match the delegate method, 18 /// </summary> 19 public static void PrintNumbersWithCount (object obj) 20 {21 Console. writeLine ("Sub thread starting... "); 22 var number = Convert. toInt32 (obj); 23 for (int I = 0; I <number; I ++) 24 {25 Console. writeLine (string. format ("Current Time: {0}, thread status: {1}, result: {2}", DateTime. now. toString ("yyyy-MM-dd HH: mm: ss"), Thread. currentThread. threadState, I); 26} 27} 28} 29}View Code

 

Output result: