Restrict application startup if already application is opened based on the loggined user in VB.NET?

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Hi All,

I want to restrict the application start up.
Already I have restricted by Using this Code.

p = Process.GetProcessesByName("application.exe")
       If p.Count > 1 Then
          XtraMessageBox.Show("Application" & " is already running", "Meg", MessageBoxButtons.OK, MessageBoxIcon.Warning)
           End
       End If

It works fine.

But if I have two user in a system it throws already application is running.
so I have to check the user name of the computer too in the validation .
Application should open in the other user. if a user tries to open double time it has to be restricted.

how to overcome this issue??

Regards,
Palraj M

What I have tried:

p = Process.GetProcessesByName("application.exe")
       If p.Count > 1 Then
          XtraMessageBox.Show("Application" & " is already running", "Meg", MessageBoxButtons.OK, MessageBoxIcon.Warning)
           End
       End If

Posted 30-Aug-16 0:33am

palraj001

Updated 30-Aug-16 5:22am

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Andy Lanng · Answer 1 · 2016-08-30T05:22:00

I'm pretty sure this would be a time to use Mutex:

The Misunderstood Mutex[^]

A Mutex is "kinda" like a "lock", but it exists across all .net processes. You can create a Mutex for the user as in the examples in the link above, or set it globally for the terminal service machine so all instances for all users can see it.

You want the first option. If the Mutex is not global then only each user can see their own. Make sure the program checks for the mutex on startup. If it exists: "Already Running", if not: Create mutex and start

Hope that helps
Andy