Limit C# Windows Application to single instance

[Richard]

Hi,

Is there an easy way to limit a .NET application to a
single running instance, ala like checking the
hPrevInstance in MFC? October 2003 MSDN only has old
samples that use named mutexes; is there anything more
slick in .NET??

--Richard

 

[Brian W]

Check out the tools, in the Genghis project

http://www.genghisgroup.com

It already has a class that does it for you.

I think the way it was implemented was pretty "slick".

Regards
Brian W

 

[Michael Culley]

Have a look at the tips at www.buygold.net . Once of tips does this and sends the command line to the previous instance.

 

[n!]

Is there an easy way to limit a .NET application to a

single running instance, ala like checking the
hPrevInstance in MFC? October 2003 MSDN only has old
samples that use named mutexes; is there anything more
slick in .NET??

Here's another link:

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

n!

 

[Guest]

Hi,

I use the following method. When true is returned I exit immediately.

private bool PreviousInstance()
{
return ( System.Diagnostics.Process.GetProcessesByName(
System.Diagnostics.Process.GetCurrentProcess().ProcessName ).Length > 1 );
}

Marcello

 

[cybertof]

Try this :


using System.Diagnostics;

static void Main(string[] cmdLine )
{
Process[] myProcess = Process.GetProcessesByName("YourAppName");

if ( myProcess.Length > 1 )
{
MessageBox.Show( "The application is already launched...");
}
else
{
// Application Execution...

}
}