prevent application starting twice in c#

Question

0.00/5 (No votes)

See more:

C#

Hi,

I need to ensure that application should not run twice.If attempt it should return to main form.

Posted 9-Aug-11 20:34pm

muralikrishna53

Add a Solution

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Christian Graus · Answer 1 · 2011-08-09T20:36:00

Solution 1

The easiest way to do this is to use a Mutex to tell if another instance is already running. There's surely tons of articles online about this ?

Posted 9-Aug-11 20:36pm

Christian Graus

Mohammad A Rahman · Answer 2 · 2011-08-09T20:39:00

Solution 2

It might be helpful,

Single Instance Application in C#[^]

Single Process Instance Object[^]

Single-Instance C# Application - for .NET 2.0[^]

:)

Posted 9-Aug-11 20:39pm

Mohammad A Rahman

Rouchage · Answer 3 · 2015-04-21T03:00:00

I was making Player in vb WPF and just this worked for me. It closes other instances. Hope it helps you. Just convert to C# :)

VB

Imports System.Threading

Private Shared appGuid As String = "c0a76b5a-12ab-45c5-b9d9-d693faa6e7b9" 'Your App Unique Guid
    Private Shared mutex As Mutex
    Public Sub New()
        InitializeComponent()
        Dim mutexCreated As Boolean

        mutex = New Mutex(True, "Global\" + appGuid, mutexCreated)
        If mutexCreated Then
            mutex.ReleaseMutex()
        End If

        If Not mutexCreated Then
            'App is already running, close this!
            Environment.[Exit](0)
        End If
    End Sub