C#-winform-timer controls

For example, show the time in the form:

Wrong idea one: I write a dead loop in the form structure function, showing the current time every second

 Public FORM6 ()        {            InitializeComponent ();              while (true)            {                = DateTime.Now.ToString ("yyyy mm month DD day hh" mm min ss sec ");                System.Threading.Thread.Sleep (+);            }        }

structure function Write cycle display time

Error reason: Structure function infinite loop, structure function can't read code is unable to open form (Li brainstorming lxc)

Wrong idea two: Place a button, the form starts to click the button to start to show the time

 Public FORM6 ()        {            InitializeComponent ();                    }         Private void button1_click (object  sender, EventArgs e)        {            while (True              {                = DateTime.Now.ToString ("yyyy mm month DD day hh" mm min ss sec " ) );                System.Threading.Thread.Sleep (+);            }        }

Click the button to display the time

Error reason: The form system is looping through time and cannot perform other actions on the form

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How do I display the current time in a form? --Timer Control (Lee brainstorming lxc)

Timer Control-A component that raises events at user-defined intervals, consumes one thread alone, and the system works

Common Properties:

Enabled-whether the control is enabled

Interval-frequency of events, how long it takes to trigger a time (Li brainstorming lxc)

Execution events: Each event to be triggered

Display the time in the form:

// Timer Control display time        Private void Timer1_Tick (object  sender, EventArgs e)        {            = DateTime.Now.ToString ("  yyyy mm month dd Day hh mm min ss sec ");        

Timer Control display time

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Using the timer control to make a random lottery system

  PublicFORM6 () {InitializeComponent (); }        BOOLStart =false; //start or end a lottery        Private voidButton1_Click (Objectsender, EventArgs e) {            if(start==false) {timer1. Enabled=true; Start=true; Button1. Text="Stop"; }            Else{timer1. Enabled=false; Start=false; Button1. Text="Start"; }        }        //Timer Control Events        Private voidTimer1_Tick (Objectsender, EventArgs e) {Random R=NewRandom (); Label1. Text= R.next (1, $).        ToString (); }

Random Draw

C#-winform-timer controls