Disable Child Controls Recursively

You can just use "not IsDisable" versus the IF...ELSE block. Additionally, the recursive call to ControlStatus should be done all the time so that the parent control is enabled/disabled along with the children.

        // to enable\disable the control & its child controls
        public void ControlStatus(Control control, bool isDisable)
        {
            foreach (Control c in control.Controls)
                try
                {
                    if (c is WebControl)
                        ((WebControl)c).Enabled = !isDisable;

                    if (c.HasChildren)
                        ControlStatus(c, isDisable);
                }
                catch (Exception)
                { }
        }