One instance only

[Aaron]

I created a simple exe program in c#. I would like to run one instance of
the program at a time. if i click the exe after the program is already
opened it should NOT start a new instance of the program it should set focus
to the currently running program.

Thanks
Aaron

 

[Trebek]

Use the Process class to examine running processes to determine if your app
is running ...

HTH,

Alex

 

[Aaron]

can you give me an example?

Use the Process class to examine running processes to determine if your app
is running ...

HTH,

Alex

 

[phoenix]

Take a look at the mutex class.

Yves

 

[Lawrence Oluyede]

I created a simple exe program in c#. I would like to run one instance of
the program at a time. if i click the exe after the program is already
opened it should NOT start a new instance of the program it should set focus
to the currently running program.

using System.Threading;

public class blah
{
public static void main(string[] args)
{
// the first instance of this program will
// create a mutex and its waitone returns
// true so, the other instances will get false
Mutex mutex = new Mutex(false, "blah");
if(mutex.WaitOne(1, false) == false)
return;
}
}

 

[Bob Powell [MVP]]

My Windows Forms Tips and Tricks page covers this.

http://www.bobpowell.net/tipstricks.htm


--
Bob Powell [MVP]
C#, System.Drawing

Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/gdiplus_faq.htm

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