determine if application is already running

[Koert]

Hi,

is there a simple way in .Net to determine if there is already an instance
running of an application ? I want to avoid that a user starts an application
twice.

Thanks,

Koert

[Shawn Hogan]

Might be something in the system.diagnostics namespace that can do what you
want...

"Koert" <Ko***@discussions.microsoft.com> wrote in message
news:E7**********************************@microsof t.com...

Hi,

is there a simple way in .Net to determine if there is already an instance
running of an application ? I want to avoid that a user starts an application twice.

Thanks,

Koert

[Rakesh Rajan]

Hi Koert,

Use named mutex.
http://www.yoda.arachsys.com/csharp/...ation.instance

HTH,
Rakesh Rajan

"Koert" wrote:

Hi,

is there a simple way in .Net to determine if there is already an instance
running of an application ? I want to avoid that a user starts an application
twice.

Thanks,

Koert

[Imran Koradia]

Take a look at the singleton design pattern.

theory of the singleton design pattern:
http://msdn.microsoft.com/library/de...tondespatt.asp
in VB.NET:
http://www.abstractvb.com/code.asp?A=1096
in C#:
http://www.c-sharpcorner.com/Code/20...tonPattern.asp
http://www.codeproject.com/csharp/de...erns_in_c_.asp

hope that helps..
Imran.

"Koert" <Ko***@discussions.microsoft.com> wrote in message
news:E7**********************************@microsof t.com...

Hi,

is there a simple way in .Net to determine if there is already an instance
running of an application ? I want to avoid that a user starts an application twice.

Thanks,

Koert

[Jon Skeet [C# MVP]]

Imran Koradia <no****@microsoft.com> wrote:

Take a look at the singleton design pattern.
That won't help at all, as the singleton would be local to the process.
theory of the singleton design pattern:
http://msdn.microsoft.com/library/de...tondespatt.asp
in VB.NET:
http://www.abstractvb.com/code.asp?A=1096
That uses a heavyweight mutex for no good reason. SyncLock is a better
approach.
in C#:
http://www.c-sharpcorner.com/Code/20...tonPattern.asp
That implementation isn't threadsafe at all.
http://www.codeproject.com/csharp/de...erns_in_c_.asp

That one is (in the same way as the MS one) but doesn't point out the
simpler patterns available.

See http://www.pobox.com/~skeet/csharp/singleton.html for my take on
singletons.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too