AjaxControlToolkit.MaskedEditExtender.OnLoad C# (CSharp) Метод

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);
            ((TextBox)this.FindControl(TargetControlID)).MaxLength = 0;
            ClientState = (string.Compare(Page.Form.DefaultFocus, TargetControlID, StringComparison.OrdinalIgnoreCase) == 0) ? "Focused" : null;
        }