Single instance of an Application in C#??

rmuzumdar

Hello, I have created a windows form application in C#. Now i want only a single instance of the application to be running at a time. Lets say I am using the following command to run a new application: Application.Run(new Form1()); The above line is written in the main method. How do i make sure that Application.Run() is executed only once, i.e. I want to make sure that a new instance of the form is not created as long as the application is running. Could anyone help me with this? Thanks, Rohan.

4 Replies

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rmuzumdar22y ago
thanks a lot... It finally worked!!
robertkjr22y ago
Use code from here: https://www.mainfunction.com/DotNetInAction/Technologies/display.aspx?ID=2614&TypeID=31
rmuzumdar22y ago
yes i want to prevent someone from clicking on the executable more than once. Do you know of any site where i can find the code...i have been trying to locate it and cant find it. Thanks, Rohan.
robertkjr22y ago
to get this more clearer... Are you trying to prevent someone from clicking on the executable more than once? If that is the case... In your form_load... check for other instances running on the box. There is code easily available on the web to check other programs running in the task list. Then just either say Application.exit or pop up a messagebox saying another instance is running, and then Application.exit