How to limit program can only run one instance.

[Boki Digtal]

Hi All,

How to limit the c# program can only run one instance at the same
time ?

Thank you!

Best regards,
Boki.

[Mark Rae [MVP]]

"Boki Digtal" <bo******@ms21. hinet.netwrote in message news:11******** *************@x 35g2000prf.goog legroups.com...

How to limit the c# program can only run one instance at the same
time ?

using System.Threadin g;

bool blnFirstInstanc e;

using (Mutex objMutex = new Mutex(false, "Local\\" + "<app name>", out blnFirstInstanc e))
{
if (!blnFirstInsta nce)
{
MessageBox.Show ("<app nameis already running", "Single Use Only", MessageBoxButto ns.OK, MessageBoxIcon. Stop);
Application.Exi t();
}
else
{
Application.Run (new Form1()); // or whatever your startup is...
}
}
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Boki Digtal]

On 7 23 , 6 11 , "Mark Rae [MVP]" <m...@markNOSPA Mrae.netwrote:

"Boki Digtal" <bokit...@ms21. hinet.netwrote in messagenews:11* *************** *****@x35g2000p rf.googlegroups .com...

How to limit the c# program can only run one instance at the same
time ?

using System.Threadin g;

bool blnFirstInstanc e;

using (Mutex objMutex = new Mutex(false, "Local\\" + "<app name>", out blnFirstInstanc e))
{
if (!blnFirstInsta nce)
{
MessageBox.Show ("<app nameis already running", "Single Use Only", MessageBoxButto ns.OK, MessageBoxIcon. Stop);
Application.Exi t();
}
else
{
Application.Run (new Form1()); // or whatever your startup is...
}

}

--
Mark Rae
ASP.NET MVPhttp://www.markrae.net

Great, thanks!

Boki.

[Boki Digtal]

On 7 24 , 2 27 , Boki Digtal <bokit...@ms21. hinet.netwrote:

On 7 23 , 6 11 , "Mark Rae [MVP]" <m...@markNOSPA Mrae.netwrote:

"Boki Digtal" <bokit...@ms21. hinet.netwrote in messagenews:11* *************** *****@x35g2000p rf.googlegroups .com...

How to limit the c# program can only run one instance at the same
time ?

using System.Threadin g;

bool blnFirstInstanc e;

using (Mutex objMutex = new Mutex(false, "Local\\" + "<app name>", out blnFirstInstanc e))
{
if (!blnFirstInsta nce)
{
MessageBox.Show ("<app nameis already running", "Single Use Only", MessageBoxButto ns.OK, MessageBoxIcon. Stop);
Application.Exi t();
}
else
{
Application.Run (new Form1()); // or whatever your startup is...
}

}

--
Mark Rae
ASP.NET MVPhttp://www.markrae.net

Great, thanks!

Boki.

Is there any easier way like OnlyOneInstance = ture;

Thanks :)

Boki.

[Mark Rae [MVP]]

"Boki Digtal" <bo******@ms21. hinet.netwrote in message
news:11******** *************@i 38g2000prf.goog legroups.com...

using System.Threadin g;

bool blnFirstInstanc e;

using (Mutex objMutex = new Mutex(false, "Local\\" + "<app name>", out
blnFirstInstanc e))
{
if (!blnFirstInsta nce)
{
MessageBox.Show ("<app nameis already running", "Single Use
Only", MessageBoxButto ns.OK, MessageBoxIcon. Stop);
Application.Exi t();
}
else
{
Application.Run (new Form1()); // or whatever your startup
is...
}
}

Great, thanks!

Is there any easier way like OnlyOneInstance = ture;

An easier way? The above is only a dozen lines of code...

Can't you get it to work, then...?
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Boki Digtal]

On 7 30 , 1 51 , "Mark Rae [MVP]" <m...@markNOSPA Mrae.netwrote:

"Boki Digtal" <bokit...@ms21. hinet.netwrote in message

news:11******** *************@i 38g2000prf.goog legroups.com...

using System.Threadin g;

bool blnFirstInstanc e;

using (Mutex objMutex = new Mutex(false, "Local\\" + "<app name>", out
blnFirstInstanc e))
{
if (!blnFirstInsta nce)
{
MessageBox.Show ("<app nameis already running", "Single Use
Only", MessageBoxButto ns.OK, MessageBoxIcon. Stop);
Application.Exi t();
}
else
{
Application.Run (new Form1()); // or whatever your startup
is...
}
}

Great, thanks!

Is there any easier way like OnlyOneInstance = ture;

An easier way? The above is only a dozen lines of code...

Can't you get it to work, then...?

--
Mark Rae
ASP.NET MVPhttp://www.markrae.net

Sorry, in fact, I don't have try it yet.

If I recall correctly, there is a setting in VC6, when we assign so
many parameters to create a form. For this purpose, what we need to do
is assign a parameter as true only.

I believe your code can work, but I am just curious if there is any
other methods.

:)

Thanks!

Best regards,
Boki.

[Jon Skeet [C# MVP]]

On Jul 30, 8:15 am, Boki Digtal <bokit...@ms21. hinet.netwrote:

Sorry, in fact, I don't have try it yet.

If I recall correctly, there is a setting in VC6, when we assign so
many parameters to create a form. For this purpose, what we need to do
is assign a parameter as true only.

I believe your code can work, but I am just curious if there is any
other methods.

You could add a reference to the Microsoft.Visua lBasic assembly and
use the WindowsFormsApp licationBase class which I believe has this
sort of functionality. I don't know much about it, but it *might* make
things easier for you.

Jon

[Boki Digtal]

On 7 30 , 3 26 , "Jon Skeet [C# MVP]" <[e-mail] mwrote:

On Jul 30, 8:15 am, Boki Digtal <bokit...@ms21. hinet.netwrote:

Sorry, in fact, I don't have try it yet.

If I recall correctly, there is a setting in VC6, when we assign so
many parameters to create a form. For this purpose, what we need to do
is assign a parameter as true only.

I believe your code can work, but I am just curious if there is any
other methods.

You could add a reference to the Microsoft.Visua lBasic assembly and
use the WindowsFormsApp licationBase class which I believe has this
sort of functionality. I don't know much about it, but it *might* make
things easier for you.

Jon

visual basic ... ? but I am using c# ...

Boki.

[Mark Rae [MVP]]

"Boki Digtal" <bo******@ms21. hinet.netwrote in message
news:11******** **************@ j4g2000prf.goog legroups.com...

On 7 30 , 3 26 , "Jon Skeet [C# MVP]" <[e-mail] mwrote:

>On Jul 30, 8:15 am, Boki Digtal <bokit...@ms21. hinet.netwrote:

Sorry, in fact, I don't have try it yet.

If I recall correctly, there is a setting in VC6, when we assign so
many parameters to create a form. For this purpose, what we need to do
is assign a parameter as true only.

I believe your code can work, but I am just curious if there is any
other methods.

You could add a reference to the Microsoft.Visua lBasic assembly and
use the WindowsFormsApp licationBase class which I believe has this
sort of functionality. I don't know much about it, but it *might* make
things easier for you.

Jon

visual basic ... ? but I am using c# ...

Yes, but you can set a reference to the Microsoft.Visua lBasic assembly and
use the (without wishing to get into a language war) "hand-holding"
functions ported over from VB6 if the code I suggested (which I pretty much
nicked from Jon anyway) is too much for you...
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Boki Digtal]

On 7 30 , 4 18 , "Mark Rae [MVP]" <m...@markNOSPA Mrae.netwrote:

"Boki Digtal" <bokit...@ms21. hinet.netwrote in message

news:11******** **************@ j4g2000prf.goog legroups.com...

On 7 30 , 3 26 , "Jon Skeet [C# MVP]" <[e-mail] mwrote:

On Jul 30, 8:15 am, Boki Digtal <bokit...@ms21. hinet.netwrote:

Sorry, in fact, I don't have try it yet.

If I recall correctly, there is a setting in VC6, when we assign so
many parameters to create a form. For this purpose, what we need to do
is assign a parameter as true only.

I believe your code can work, but I am just curious if there is any
other methods.

You could add a reference to the Microsoft.Visua lBasic assembly and
use the WindowsFormsApp licationBase class which I believe has this
sort of functionality. I don't know much about it, but it *might* make
things easier for you.

Jon

visual basic ... ? but I am using c# ...

Yes, but you can set a reference to the Microsoft.Visua lBasic assembly and
use the (without wishing to get into a language war) "hand-holding"
functions ported over from VB6 if the code I suggested (which I pretty much
nicked from Jon anyway) is too much for you...

--
Mark Rae
ASP.NET MVPhttp://www.markrae.net

OK, got it, thanks :)

Boki.