end of the course

C# Full Course for free/16.multithreading.md

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+# multithreading
+
+thread is an execution path of a program
+we can use multiple threads to perform,
+different taks of our program at the same time.
+Current thread running is "main" thread
+using System.Threading;
+
+## Single Thread
+```C#
+// single Thread
+using System.Threading;
+
+Thread mainThread = Thread.CurrenThread;
+mainThread.Name = "Main Thread";
+Console.WriteLine(mainThread.Name);
+```
+
+### Timer Example
+
+```C#
+public static void CountDown()
+{
+    for (int i = 10; i >=0; i--)
+    {
+        Console.WriteLine("Timer #1 : " + i + " seconds");
+        Thread.Sleep(1000)
+    }
+    Console.WriteLine("Timer #1 is complete !")
+}
+
+public static void CountUp()
+{
+    for (int i = 0; i >=0; i++)
+    {
+        Console.WriteLine("Timer #2 : " + i + " seconds");
+        Thread.Sleep(1000)
+    }
+    Console.WriteLine("Timer #2 is complete !")
+}
+```
+
+```C#
+// Main
+
+CountDown();
+CountUp();
+```
+
+## multiple Thread
+
+```C#
+public static void CountDown()
+{
+    for (int i = 10; i >=0; i--)
+    {
+        Console.WriteLine("Timer #1 : " + i + " seconds");
+        Thread.Sleep(1000)
+    }
+    Console.WriteLine("Timer #1 is complete !")
+}
+
+public static void CountUp()
+{
+    for (int i = 0; i >=0; i++)
+    {
+        Console.WriteLine("Timer #2 : " + i + " seconds");
+        Thread.Sleep(1000)
+    }
+    Console.WriteLine("Timer #2 is complete !")
+}
+```
+
+```C#
+// Main
+
+Thread thread1 = new Thread(CountDown);
+Thread thread2 = new Thread(CountUp);
+
+// if the function got a parameter
+// use a lambda
+// Thread thread1 = new Thread(() => CountDown("Thimer #1"));
+
+
+thread1.start();
+thread2.start();
+
+CountDown();
+CountUp();
+```