could not able to copy 'obj\debug\projectname.exe to bin\deb

Its because of you have closed your application, but still its running in background.


**Temporary Solution is...
-> Go to Task Manager(Ctrl+Alt+Esc).
-> Go to Processes tab and find "YourProjectName.exe".
-> End Process it.


**Permanent Solution is...
-> You have to close your application through coding.
-> Here is the code...


    System.Windows.Forms.Application.Exit();


-> You have to put this code in to the form closing event in all form.
    Example:


    private void frm_menu_FormClosing(object sender, FormClosingEventArgs e)
    {
    System.Windows.Forms.Application.Exit();
    }