Re: Hold the timer tick event before processing - C# Discussion Boards

Hello friends,
I want to generate unique random numbers like if user want to generate random number between 100 to 500 then the number generated between them should be unique..
But there is a problem that number that i have generated are not unique my code is.

Random b = new Random();
string from = textBox3.Text;
string end = textBox4.Text;
int min= Convert.ToInt32(from);
int max = Convert.ToInt32(end);
for (int i = min; i <= max; i++)
{

listBox1.Items.Add(b.Next(min, max));
}

this code generate random number between min amd max but they are not unique.

The way to stop your numbers from repeating is to build a list of numbers ( so, from 100 to 500 ), then generate random numbers, the first would be between 0 and 399. Then you grab the number at that index in your list, and remove it. So, every time, the maximum value for your random number goes down by one ( use the Count property of the list for this ).

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Sir thanks for suggestion.
But i am new in .NET so please can you give me code of this problem..

because i have tried what u write but i am unable to achieve it

Regards
Dikshant

It's incredibly straightforward, do you own any C# books ? You should buy one and work through it.

The steps are

List<int> list = new List<int>();

for(int 100;n<=500;++n)
{
list.Add(n);
}

Then when you want a number, generate a randon number between 0 and list.Count - 1. Grab that value and then remove it from the list.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Hi all,

I used the Timer class to make a tick event in specific interval, in my C# .Net service. My attempt as follows.

private System.Timers.Timer TimerTicker = null;
public RfService()
{
    InitializeComponent();

    const double INTERVAL = 10000;

    TimerTicker = new System.Timers.Timer( INTERVAL );
    TimerTicker.Elapsed += new ElapsedEventHandler( this.ServiceTimer_Tick );
}

Here, ServiceTimer_Tick() do my processing part.

My question is this. Immediately after starting my service start to count the tick on each 10 seconds and do the processing. That's fine, and work it well.

But, I want to hold the tick for 2 minutes immediately after starting the service and then do the 10 seconds interval process. That mean only the first time I want to hold the tick for 2 minutes.

I think it is clear for you. How can I do this. I'm really new for C#. Specially on threading, because I found that using threading I can do that.... Smile | :)

Thanks

I appreciate your help all the time...
Eranga Smile | :)

It's pretty straightforward. Set the interval to whatever you want it to be for the first tick, and in ServiceTimer_Tick, set the interval property of the timer to whatever you want it to be afer that.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

If I get you correctly, you ask me to use two tick event. Yes I think that. But one of tick event execute only one time, stop it after 2 minute.

And also I do all those things in constructor method. Frown | :(

I appreciate your help all the time...
Eranga Smile | :)

No, not even remotely.

The timer has an interval property. Inside your tick event, set the Interval property to the value you want it to be after the first time it fires.

All I am suggesting is you do something like

Timer.Interval = 2000; // 2 seconds

inside the tick event.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Ok, I got the point and I'll try it now.

I appreciate your help all the time...
Eranga Smile | :)

Hi to ALL...

i have one doubt regarding to my project ...i have one compiled socket source code .In this source code are fully worked Windows XP...but in this code is not suitable for vista(not compiled)..
what is the problem for this ?
Whats the solution for that?
Is there any DLL corruption or not?If it is yes what kind of DLL add that problem ..?

....Please give your suggestion or any URL ...