Lottery system for help

libramty

I am doing a lottery system for the unit
The general approach is
Enter employee information into database
Click event with a button
Start FOR loop statement
Displaying data with LABEL.TEXT

But now just a little start button
It keeps looping
Other buttons are unclickable

How to write can achieve
Click button one to start the loop
Click on button two

everever30

Button 1: Start a thread draw.

nkawei

Just add a judgment to the loop body. .

Determine if you clicked the second button.

for ......
if condition then
 exit fot
endif
next

nkawei

fot is wrong and should be for

libramty

thank you
But I am really a novice

May I ask this statement to judge the second button
How to write

stillwater

Use multithreading
How to do a thread, the interface is deadlocked

rirgw1

Using timer is very simple, put the numbers you want to draw into the numbers array.

 private string [] numbers = null;
The
private void btnStart_Click (object sender, System.EventArgs e)
{
this.timer1.Interval = 100;
this.timer1.Start ();
this.btnStart.Enabled = false;
this.btnStop.Enabled = true;
}

private void Form1_Load (object sender, System.EventArgs e)
{
numbers = new string [] {"1", "2", "3", "4", "5", "6", "7", "8", "9", "0"};
this.timer1.Tick + = new System.EventHandler (this.timer1_Tick);
this.btnStart.Enabled = true;
this.btnStop.Enabled = false;
}

private void timer1_Tick (object sender, EventArgs e)
{
this.txtNumber.Text = GetRandomNumber (this.numbers);
}

private string GetRandomNumber (string [] numbers)
{
if (numbers == null || numbers.Length == 0)
return "";
Random rdm = new Random (unchecked ((int) DateTime.Now.Ticks));
int index = rdm.Next (0, numbers.Length-1);
return numbers [index];
}

private void btnStop_Click (object sender, System.EventArgs e)
{
this.timer1.Stop ();
this.btnStart.Enabled = true;
this.btnStop.Enabled = false;
}

gkgk1234

The landlord, the circulation of the lottery is unscientific, and it should be better to use random. The Random function can solve it (for example, use the timer control to randomly draw one in 0.1 seconds and click the button to confirm).

rirgw1

In addition, after a number is drawn, the number should be removed from the array to avoid repeated winnings ~~

nkawei

You post your code, let me change it