public frm_main() // private constructor (singleton desPattern)
{
InitializeComponent();
if (_instance == null)
{
_instance = this;
}
//file, prodcuts, users
this.productsToolStripMenuItem.Enabled = false;
this.usersToolStripMenuItem.Enabled = false;
this.backUpDbToolStripMenuItem.Enabled = false;
this.restoreDbBackupToolStripMenuItem.Enabled = false;
// used to update the textbox of current time and date
Timer tmr;
// timer to update the txt_dateTime textbox
tmr = new Timer();
tmr.Interval = 1000;
tmr.Tick += tmr_Tick;
tmr.Enabled = true;
}
static void frm_FormClosed(object sender, FormClosedEventArgs e)
{
// for security purposes
// dispose the form object on closing the form, just to make sure that no other forms are using this object
_instance = null;
}