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25 Jan 2019 13:40

Joined:	25/01/2019
Level:	Bronze
Points:	4

Points:	4

How to Check the Windows already Open

I have Menu Bar Like Transaction when i am click ,open the Create transaction window should be open .
again i am going to try to open the Create Transaction window .

how to give the warning Message like "Already create Transaction Window opened"

how to check the window currently open or Not ?
if i am click the opened window , give some warning message and show the old opened window.?
Lee!

#769837

20 Feb 2019 15:11

Joined:	15/07/2009
Level:	Silver
Points:	362

Points:	3

Hi,
I'm assuming that you have to use thread synchronisation Mutex and restrict the number of instances / windows....

Sample:

Boolean isNewWindow;

var mutex = new Mutex(true, mutexName, out isNewWindow);

if (!isNewWindow)
{
//If createdNew is false that means an instance of application is already running for this
// user.
//So in this case stop the application from executing.
return;
}

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How to Check the Windows already Open

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