static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
frmLogin frmL = new frmLogin();
frmUsers frmUsers = new frmUsers();
frmGoods frmGoods = new frmGoods();
Application.Run(frmL);
if (frmL.LoginOk == true)
{
Application.Run(new frmMain());
}
if (frmL.LoginYes == true)
{
Application.Run(new frmUserMain());
}
}