public static IHtmlContent ObjectTemplate(IHtmlHelper htmlHelper)
        {
            var viewData = htmlHelper.ViewData;
            var templateInfo = viewData.TemplateInfo;
            var modelExplorer = viewData.ModelExplorer;

            if (modelExplorer.Model == null)
            {
                return new HtmlString(modelExplorer.Metadata.NullDisplayText);
            }

            if (templateInfo.TemplateDepth > 1)
            {
                var text = modelExplorer.GetSimpleDisplayText();
                if (modelExplorer.Metadata.HtmlEncode)
                {
                    text = htmlHelper.Encode(text);
                }

                return new HtmlString(text);
            }

            var serviceProvider = htmlHelper.ViewContext.HttpContext.RequestServices;
            var viewEngine = serviceProvider.GetRequiredService<ICompositeViewEngine>();

            var content = new BufferedHtmlContent();
            foreach (var propertyExplorer in modelExplorer.Properties)
            {
                var propertyMetadata = propertyExplorer.Metadata;
                if (!ShouldShow(propertyExplorer, templateInfo))
                {
                    continue;
                }

                var templateBuilder = new TemplateBuilder(
                    viewEngine,
                    htmlHelper.ViewContext,
                    htmlHelper.ViewData,
                    propertyExplorer,
                    htmlFieldName: propertyMetadata.PropertyName,
                    templateName: null,
                    readOnly: true,
                    additionalViewData: null);

                var templateBuilderResult = templateBuilder.Build();
                if (!propertyMetadata.HideSurroundingHtml)
                {
                    var label = propertyMetadata.GetDisplayName();
                    if (!string.IsNullOrEmpty(label))
                    {
                        var labelTag = new TagBuilder("div");
                        labelTag.InnerHtml.SetContent(label);
                        labelTag.AddCssClass("display-label");
                        content.AppendLine(labelTag);
                    }

                    var valueDivTag = new TagBuilder("div");
                    valueDivTag.AddCssClass("display-field");
                    valueDivTag.InnerHtml.SetContent(templateBuilderResult);
                    content.AppendLine(valueDivTag);
                }
                else
                {
                    content.Append(templateBuilderResult);
                }
            }

            return content;
        }
        public static IHtmlContent ObjectTemplate(IHtmlHelper htmlHelper)
        {
            var viewData      = htmlHelper.ViewData;
            var templateInfo  = viewData.TemplateInfo;
            var modelExplorer = viewData.ModelExplorer;

            if (templateInfo.TemplateDepth > 1)
            {
                if (modelExplorer.Model == null)
                {
                    return(new HtmlString(modelExplorer.Metadata.NullDisplayText));
                }

                var text = modelExplorer.GetSimpleDisplayText();
                if (modelExplorer.Metadata.HtmlEncode)
                {
                    return(new StringHtmlContent(text));
                }

                return(new HtmlString(text));
            }

            var serviceProvider = htmlHelper.ViewContext.HttpContext.RequestServices;
            var viewEngine      = serviceProvider.GetRequiredService <ICompositeViewEngine>();

            var content = new BufferedHtmlContent();

            foreach (var propertyExplorer in modelExplorer.Properties)
            {
                var propertyMetadata = propertyExplorer.Metadata;
                if (!ShouldShow(propertyExplorer, templateInfo))
                {
                    continue;
                }

                var templateBuilder = new TemplateBuilder(
                    viewEngine,
                    htmlHelper.ViewContext,
                    htmlHelper.ViewData,
                    propertyExplorer,
                    htmlFieldName: propertyMetadata.PropertyName,
                    templateName: null,
                    readOnly: false,
                    additionalViewData: null);

                var templateBuilderResult = templateBuilder.Build();
                if (!propertyMetadata.HideSurroundingHtml)
                {
                    var label = htmlHelper.Label(propertyMetadata.PropertyName, labelText: null, htmlAttributes: null);
                    if (!string.IsNullOrEmpty(label.ToString()))
                    {
                        var labelTag = new TagBuilder("div");
                        labelTag.AddCssClass("editor-label");
                        labelTag.InnerHtml = label;
                        content.AppendLine(labelTag);
                    }

                    var valueDivTag = new TagBuilder("div");
                    valueDivTag.AddCssClass("editor-field");

                    var innerContent = new BufferedHtmlContent();
                    innerContent.Append(templateBuilderResult);
                    innerContent.Append(" ");
                    innerContent.Append(htmlHelper.ValidationMessage(
                                            propertyMetadata.PropertyName,
                                            message: null,
                                            htmlAttributes: null,
                                            tag: null));
                    valueDivTag.InnerHtml = innerContent;

                    content.AppendLine(valueDivTag);
                }
                else
                {
                    content.Append(templateBuilderResult);
                }
            }

            return(content);
        }