/// <summary>
        /// In HTML konvertieren
        /// </summary>
        /// <returns>Das Control als HTML</returns>
        public override IHtmlNode ToHtml()
        {
            var classes = new List <string>();

            classes.Add(Class);
            classes.Add("dropdown");

            var buttonClasses = new List <string>();

            buttonClasses.Add(ClassButton);
            buttonClasses.Add("btn");

            if (Outline)
            {
                switch (Layout)
                {
                case TypesLayoutButton.Primary:
                    buttonClasses.Add("btn-outline-primary");
                    break;

                case TypesLayoutButton.Success:
                    buttonClasses.Add("btn-outline-success");
                    break;

                case TypesLayoutButton.Info:
                    buttonClasses.Add("btn-outline-info");
                    break;

                case TypesLayoutButton.Warning:
                    buttonClasses.Add("btn-outline-warning");
                    break;

                case TypesLayoutButton.Danger:
                    buttonClasses.Add("btn-outline-danger");
                    break;

                case TypesLayoutButton.Light:
                    buttonClasses.Add("btn-outline-light");
                    break;

                case TypesLayoutButton.Dark:
                    buttonClasses.Add("btn-outline-dark");
                    break;
                }
            }
            else
            {
                switch (Layout)
                {
                case TypesLayoutButton.Primary:
                    buttonClasses.Add("btn-primary");
                    break;

                case TypesLayoutButton.Success:
                    buttonClasses.Add("btn-success");
                    break;

                case TypesLayoutButton.Info:
                    buttonClasses.Add("btn-info");
                    break;

                case TypesLayoutButton.Warning:
                    buttonClasses.Add("btn-warning");
                    break;

                case TypesLayoutButton.Danger:
                    buttonClasses.Add("btn-danger");
                    break;

                case TypesLayoutButton.Light:
                    buttonClasses.Add("btn-light");
                    break;

                case TypesLayoutButton.Dark:
                    buttonClasses.Add("btn-dark");
                    break;
                }
            }

            switch (Size)
            {
            case TypesSize.Large:
                buttonClasses.Add("btn-lg");
                break;

            case TypesSize.Small:
                buttonClasses.Add("btn-sm");
                break;
            }

            switch (HorizontalAlignment)
            {
            case TypesHorizontalAlignment.Left:
                classes.Add("float-left");
                break;

            case TypesHorizontalAlignment.Right:
                classes.Add("float-right");
                break;
            }

            if (Block)
            {
                buttonClasses.Add("btn-block");
            }

            var html = new HtmlElementDiv()
            {
                ID    = ID,
                Class = string.Join(" ", classes.Where(x => !string.IsNullOrWhiteSpace(x))),
                Style = Style
            };

            var button = new HtmlElementButton()
            {
                ID         = string.IsNullOrWhiteSpace(ID) ? "" : ID + "_btn",
                Class      = string.Join(" ", buttonClasses.Where(x => !string.IsNullOrWhiteSpace(x))),
                Style      = StyleButton,
                DataToggle = "dropdown"
            };

            if (!string.IsNullOrWhiteSpace(Icon) && !string.IsNullOrWhiteSpace(Text))
            {
                button.Elements.Add(new HtmlElementSpan()
                {
                    Class = Icon
                });

                button.Elements.Add(new HtmlNbsp());
                button.Elements.Add(new HtmlNbsp());
                button.Elements.Add(new HtmlNbsp());
            }
            else if (!string.IsNullOrWhiteSpace(Icon) && string.IsNullOrWhiteSpace(Text))
            {
                button.AddClass(Icon);
            }

            if (!string.IsNullOrWhiteSpace(Text))
            {
                button.Elements.Add(new HtmlText(Text));
            }

            html.Elements.Add(button);
            html.Elements.Add
            (
                new HtmlElementUl
                (
                    Items.Select
                    (
                        x =>
                        x == null ?
                        new HtmlElementLi()
            {
                Class = "dropdown-divider", Inline = true
            } :
                        x is ControlDropdownMenuHeader ?
                        x.ToHtml() :
                        new HtmlElementLi(x.ToHtml().AddClass("dropdown-item"))
            {
            }
                    )
                )
            {
                Class = HorizontalAlignment == TypesHorizontalAlignment.Right ? "dropdown-menu dropdown-menu-right" : "dropdown-menu"
            }
            );

            return(html);
        }
        /// <summary>
        /// In HTML konvertieren
        /// </summary>
        /// <returns>Das Control als HTML</returns>
        public override IHtmlNode ToHtml()
        {
            if (Page.HasParam(Name))
            {
                Value = Page.GetParam(Name);

                var value = Page.GetParam(Name);

                if (!string.IsNullOrWhiteSpace(Value) && value == Value)
                {
                    OnClickEvent(new EventArgs());
                }
            }

            var classes = new List <string>();

            classes.Add(Class);
            classes.Add("btn");

            if (Outline)
            {
                switch (Layout)
                {
                case TypesLayoutButton.Primary:
                    classes.Add("btn-outline-primary");
                    break;

                case TypesLayoutButton.Success:
                    classes.Add("btn-outline-success");
                    break;

                case TypesLayoutButton.Info:
                    classes.Add("btn-outline-info");
                    break;

                case TypesLayoutButton.Warning:
                    classes.Add("btn-outline-warning");
                    break;

                case TypesLayoutButton.Danger:
                    classes.Add("btn-outline-danger");
                    break;

                case TypesLayoutButton.Dark:
                    classes.Add("btn-outline-dark");
                    break;
                }
            }
            else
            {
                switch (Layout)
                {
                case TypesLayoutButton.Primary:
                    classes.Add("btn-primary");
                    break;

                case TypesLayoutButton.Success:
                    classes.Add("btn-success");
                    break;

                case TypesLayoutButton.Info:
                    classes.Add("btn-info");
                    break;

                case TypesLayoutButton.Warning:
                    classes.Add("btn-warning");
                    break;

                case TypesLayoutButton.Danger:
                    classes.Add("btn-danger");
                    break;

                case TypesLayoutButton.Light:
                    classes.Add("btn-light");
                    break;

                case TypesLayoutButton.Dark:
                    classes.Add("btn-dark");
                    break;
                }
            }

            switch (Size)
            {
            case TypesSize.Large:
                classes.Add("btn-lg");
                break;

            case TypesSize.Small:
                classes.Add("btn-sm");
                break;
            }

            switch (HorizontalAlignment)
            {
            case TypesHorizontalAlignment.Left:
                classes.Add("float-left");
                break;

            case TypesHorizontalAlignment.Right:
                classes.Add("float-right");
                break;
            }

            if (Block)
            {
                classes.Add("btn-block");
            }

            var html = new HtmlElementButton()
            {
                Name     = Name,
                Type     = Type,
                Value    = Value,
                Class    = string.Join(" ", classes.Where(x => !string.IsNullOrWhiteSpace(x))),
                Role     = Role,
                Disabled = Disabled
            };

            if (!string.IsNullOrWhiteSpace(Icon) && !string.IsNullOrWhiteSpace(Text))
            {
                html.Elements.Add(new HtmlElementSpan()
                {
                    Class = Icon
                });

                html.Elements.Add(new HtmlNbsp());
                html.Elements.Add(new HtmlNbsp());
                html.Elements.Add(new HtmlNbsp());
            }
            else if (!string.IsNullOrWhiteSpace(Icon) && string.IsNullOrWhiteSpace(Text))
            {
                html.AddClass(Icon);
            }

            if (!string.IsNullOrWhiteSpace(Text))
            {
                html.Elements.Add(new HtmlText(Text));
            }

            if (Content.Count > 0)
            {
                html.Elements.AddRange(Content.Select(x => x.ToHtml()));
            }

            return(html);
        }