tag helpers refactor

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/AbpTagHelperService.cs

@@ -56,93 +56,5 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers
             Process(context, output);
             return Task.CompletedTask;
         }
-
-        protected virtual TagHelperOutput GetInnerTagHelper(TagHelperAttributeList attributeList, TagHelperContext context, TagHelper tagHelper, string tagName = "div", TagMode tagMode = TagMode.SelfClosing, bool runAsync = false)
-        {
-            var innerOutput = new TagHelperOutput(tagName, attributeList, (useCachedResult, encoder) => Task.Run<TagHelperContent>(() => new DefaultTagHelperContent()))
-            {
-                TagMode = tagMode
-            };
-
-            var innerContext = new TagHelperContext(attributeList, context.Items, Guid.NewGuid().ToString());
-
-            tagHelper.Init(context);
-
-            if (runAsync)
-            {
-                AsyncHelper.RunSync(() => tagHelper.ProcessAsync(innerContext, innerOutput));
-            }
-            else
-            {
-                tagHelper.Process(innerContext, innerOutput);
-            }
-
-            return innerOutput;
-        }
-
-        protected virtual string RenderTagHelper(TagHelperAttributeList attributeList, TagHelperContext context, TagHelper tagHelper, HtmlEncoder htmlEncoder, string tagName = "div", TagMode tagMode = TagMode.SelfClosing, bool runAsync = false)
-        {
-            var innerOutput = GetInnerTagHelper(attributeList, context, tagHelper, tagName, tagMode, runAsync);
-
-            return RenderTagHelperOutput(innerOutput, htmlEncoder);
-        }
-
-        protected virtual string RenderTagHelperOutput(TagHelperOutput output, HtmlEncoder htmlEncoder)
-        {
-            using (var writer = new StringWriter())
-            {
-                output.WriteTo(writer, htmlEncoder);
-                return writer.ToString();
-            }
-        }
-
-        protected virtual T GetAttribute<T>(ModelExplorer property) where T : Attribute
-        {
-            return property?.Metadata?.ContainerType?.GetTypeInfo()?.GetProperty(property.Metadata.PropertyName)?.GetCustomAttribute<T>();
-        }
-
-        protected virtual List<FormGroupItem> GetFormGroupContentsList(TagHelperContext context, out bool surpress)
-        {
-            var items = GetValueFromContext<List<FormGroupItem>>(context, FormGroupContents);
-            surpress = items != null;
-
-            return items ?? new List<FormGroupItem>();
-        }
-
-        protected virtual T GetValueFromContext<T>(TagHelperContext context, string key)
-        {
-            if (!context.Items.ContainsKey(key))
-            {
-                return default(T);
-            }
-            
-            return (T)context.Items[key];
-        }
-
-        protected virtual string GetIdAttributeAsString(TagHelperOutput inputTag)
-        {
-            var idAttr = inputTag.Attributes.FirstOrDefault(a => a.Name == "id");
-
-            return idAttr != null ? "for=\"" + idAttr.Value + "\"" : "";
-        }
-
-        protected virtual int GetInputOrder(ModelExplorer explorer)
-        {
-            return GetAttribute<DisplayOrder>(explorer)?.Number ?? DisplayOrder.Default;
-        }
-
-        protected virtual void AddGroupToFormGroupContents(TagHelperContext context, string propertyName, string html, int order, out bool surpress)
-        {
-            var list = GetFormGroupContentsList(context, out surpress);
-
-            if (list != null && !list.Any(igc => igc.HtmlContent.Contains("id=\"" + propertyName.Replace('.', '_') + "\"")))
-            {
-                list.Add(new FormGroupItem
-                {
-                    HtmlContent = html,
-                    Order = order
-                });
-            }
-        }
     }
 }

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Breadcrumb/AbpBreadcrumbItemTagHelperService.cs

@@ -2,6 +2,7 @@
 using System.Text.Encodings.Web;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Breadcrumb
 {
@@ -20,13 +21,13 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Breadcrumb
             output.Attributes.AddClass("breadcrumb-item");
             output.Attributes.AddClass(AbpBreadcrumbItemActivePlaceholder);
 
-            var list = GetValueFromContext<List<BreadcrumbItem>>(context, BreadcrumbItemsContent);
+            var list = context.GetValue<List<BreadcrumbItem>>(BreadcrumbItemsContent);
 
             output.Content.SetHtmlContent(GetInnerHtml(context, output));
             
             list.Add(new BreadcrumbItem
             {
-                Html = RenderTagHelperOutput(output, _encoder),
+                Html = output.Render(_encoder),
                 Active = TagHelper.Active
             });
 

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Carousel/AbpCarouselItemTagHelperService.cs

@@ -3,6 +3,7 @@ using System.Text;
 using System.Text.Encodings.Web;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Carousel
 {
@@ -32,9 +33,9 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Carousel
 
         private void AddToContext(TagHelperContext context, TagHelperOutput output)
         {
-            var getOutputAsHtml = RenderTagHelperOutput(output, _encoder);
+            var getOutputAsHtml = output.Render(_encoder);
 
-            var itemList = GetValueFromContext<List<CarouselItem>>(context, CarouselItemsContent);
+            var itemList = context.GetValue<List<CarouselItem>>(CarouselItemsContent);
 
             itemList.Add(new CarouselItem(getOutputAsHtml, TagHelper.Active ?? false));
         }

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Collapse/AbpAccordionItemTagHelperService.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Collapse
 {
@@ -15,7 +16,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Collapse
 
             var html = GetAccordionHeaderItem(context, output) + GetAccordionContentItem(context, output, innerContent);
 
-            var tabHeaderItems = GetValueFromContext<List<string>>(context, AccordionItems);
+            var tabHeaderItems = context.GetValue<List<string>>(AccordionItems);
 
             tabHeaderItems.Add(html);
 

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Dropdown/AbpDropdownButtonTagHelperService.cs

@@ -6,6 +6,7 @@ using Microsoft.AspNetCore.Razor.TagHelpers;
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHelpers;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Button;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Dropdown
 {
@@ -66,17 +67,17 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Dropdown
             abpButtonTagHelper.ButtonType = TagHelper.ButtonType;
             var attributes = GetAttributesForMainButton(context, output);
 
-            var buttonTag = GetInnerTagHelper(attributes, context, abpButtonTagHelper, "button", TagMode.StartTagAndEndTag);
+            var buttonTag = abpButtonTagHelper.GetTagHelperOutput(attributes, context, "button", TagMode.StartTagAndEndTag);
 
             buttonTag.PreContent.SetHtmlContent(content.GetContent());
 
             if ((TagHelper.NavLink ?? false) || (TagHelper.Link ?? false))
             {
                 var linkTag = ConvertButtonToLink(buttonTag);
-                return RenderTagHelperOutput(linkTag, _htmlEncoder);
+                return linkTag.Render(_htmlEncoder);
             }
 
-            return RenderTagHelperOutput(buttonTag, _htmlEncoder);
+            return buttonTag.Render(_htmlEncoder);
         }
 
         protected virtual string GetSplitButton(TagHelperContext context, TagHelperOutput output)
@@ -87,7 +88,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Dropdown
             abpButtonTagHelper.ButtonType = TagHelper.ButtonType;
             var attributes = GetAttributesForSplitButton(context, output);
 
-            return RenderTagHelper(attributes, context, abpButtonTagHelper, _htmlEncoder, "button", TagMode.StartTagAndEndTag);
+            return abpButtonTagHelper.Render(attributes, context, _htmlEncoder, "button", TagMode.StartTagAndEndTag);
         }
 
         protected virtual TagHelperAttributeList GetAttributesForMainButton(TagHelperContext context, TagHelperOutput output)

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Extensions/ModelExplorerExtensions.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Reflection;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions
+{
+    public static class ModelExplorerExtensions
+    {
+        public static T GetAttribute<T>(this ModelExplorer property) where T : Attribute
+        {
+            return property?.Metadata?.ContainerType?.GetTypeInfo()?.GetProperty(property.Metadata.PropertyName)?.GetCustomAttribute<T>();
+        }
+
+        public static int GetDisplayOrder(this ModelExplorer explorer)
+        {
+            return GetAttribute<DisplayOrder>(explorer)?.Number ?? DisplayOrder.Default;
+        }
+    }
+}

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Extensions/TagHelperContextExtensions.cs

@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions
+{
+    public static class TagHelperContextExtensions
+    {
+        public static T GetValue<T>(this TagHelperContext context, string key)
+        {
+            if (!context.Items.ContainsKey(key))
+            {
+                return default(T);
+            }
+
+            return (T)context.Items[key];
+        }
+    }
+}

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Extensions/TagHelperExtensions.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using System.Text.Encodings.Web;
+using Volo.Abp.Threading;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions
+{
+    public static class TagHelperExtensions
+    {
+        public static TagHelperOutput GetTagHelperOutput(this TagHelper tagHelper, TagHelperAttributeList attributeList, TagHelperContext context, string tagName = "div", TagMode tagMode = TagMode.SelfClosing, bool runAsync = false)
+        {
+            var innerOutput = new TagHelperOutput(tagName, attributeList, (useCachedResult, encoder) => Task.Run<TagHelperContent>(() => new DefaultTagHelperContent()))
+            {
+                TagMode = tagMode
+            };
+
+            var innerContext = new TagHelperContext(attributeList, context.Items, Guid.NewGuid().ToString());
+
+            tagHelper.Init(context);
+
+            if (runAsync)
+            {
+                AsyncHelper.RunSync(() => tagHelper.ProcessAsync(innerContext, innerOutput));
+            }
+            else
+            {
+                tagHelper.Process(innerContext, innerOutput);
+            }
+
+            return innerOutput;
+        }
+
+        public static string Render(this TagHelper tagHelper, TagHelperAttributeList attributeList, TagHelperContext context, HtmlEncoder htmlEncoder, string tagName = "div", TagMode tagMode = TagMode.SelfClosing, bool runAsync = false)
+        {
+            var innerOutput = tagHelper.GetTagHelperOutput(attributeList, context, tagName, tagMode, runAsync);
+
+            return innerOutput.Render(htmlEncoder);
+        }
+    }
+}

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Extensions/TagHelperOutputExtensions.cs

@@ -0,0 +1,18 @@
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using System.IO;
+using System.Text.Encodings.Web;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions
+{
+    public static class TagHelperOutputExtensions
+    {
+        public static string Render(this TagHelperOutput output, HtmlEncoder htmlEncoder)
+        {
+            using (var writer = new StringWriter())
+            {
+                output.WriteTo(writer, htmlEncoder);
+                return writer.ToString();
+            }
+        }
+    }
+}

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpDynamicformTagHelperService.cs

@@ -11,6 +11,7 @@ using Microsoft.AspNetCore.Razor.TagHelpers;
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHelpers;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Button;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 {
@@ -66,7 +67,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 ViewContext = TagHelper.ViewContext
             };
 
-            var formTagOutput = GetInnerTagHelper(output.Attributes, context, formTagHelper, "form", TagMode.StartTagAndEndTag);
+            var formTagOutput = formTagHelper.GetTagHelperOutput(output.Attributes, context, "form", TagMode.StartTagAndEndTag);
 
             await formTagOutput.GetChildContentAsync();
 
@@ -146,7 +147,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
         {
             var abpSelectTagHelper = GetSelectGroupTagHelper(context, output, model);
 
-            RenderTagHelper(new TagHelperAttributeList(), context, abpSelectTagHelper, _htmlEncoder, "div", TagMode.StartTagAndEndTag);
+            abpSelectTagHelper.Render(new TagHelperAttributeList(), context, _htmlEncoder, "div", TagMode.StartTagAndEndTag);
         }
 
         protected virtual AbpTagHelper GetSelectGroupTagHelper(TagHelperContext context, TagHelperOutput output, ModelExpression model)
@@ -167,7 +168,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
         protected virtual AbpTagHelper GetAbpRadioInputTagHelper(ModelExpression model)
         {
-            var radioButtonAttribute = GetAttribute<AbpRadioButton>(model.ModelExplorer);
+            var radioButtonAttribute = model.ModelExplorer.GetAttribute<AbpRadioButton>();
             var abpRadioInputTagHelper = _serviceProvider.GetRequiredService<AbpRadioInputTagHelper>();
             abpRadioInputTagHelper.AspFor = model;
             abpRadioInputTagHelper.AspItems = null;
@@ -184,7 +185,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             abpButtonTagHelper.Text = "Submit";
             abpButtonTagHelper.ButtonType = AbpButtonType.Primary;
 
-            return RenderTagHelper(attributes, context, abpButtonTagHelper, _htmlEncoder, "button", TagMode.StartTagAndEndTag);
+            return abpButtonTagHelper.Render(attributes, context, _htmlEncoder, "button", TagMode.StartTagAndEndTag);
         }
 
         protected virtual void ProcessInputGroup(TagHelperContext context, TagHelperOutput output, ModelExpression model)
@@ -194,7 +195,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             abpInputTagHelper.ViewContext = TagHelper.ViewContext;
             abpInputTagHelper.DisplayRequiredSymbol = TagHelper.RequiredSymbols ?? true;
 
-            RenderTagHelper(new TagHelperAttributeList(), context, abpInputTagHelper, _htmlEncoder, "div", TagMode.StartTagAndEndTag);
+            abpInputTagHelper.Render(new TagHelperAttributeList(), context, _htmlEncoder, "div", TagMode.StartTagAndEndTag);
         }
 
         protected virtual List<ModelExpression> GetModels(TagHelperContext context, TagHelperOutput output)
@@ -280,12 +281,12 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
         protected virtual bool AreSelectItemsProvided(ModelExplorer explorer)
         {
-            return GetAttribute<SelectItems>(explorer) != null;
+            return explorer.GetAttribute<SelectItems>() != null;
         }
 
         protected virtual bool IsRadioGroup(ModelExplorer explorer)
         {
-            return GetAttribute<AbpRadioButton>(explorer) != null;
+            return explorer.GetAttribute<AbpRadioButton>() != null;
         }
     }
 }

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpInputTagHelperService.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using System.Text.Encodings.Web;
@@ -6,6 +7,7 @@ using Microsoft.AspNetCore.Mvc.TagHelpers;
 using Microsoft.AspNetCore.Mvc.ViewFeatures;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 {
@@ -26,7 +28,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
         {
             var innerHtml = GetFormInputGroupAsHtml(context, output, out var isCheckbox);
 
-            var order = GetInputOrder(TagHelper.AspFor.ModelExplorer);
+            var order = TagHelper.AspFor.ModelExplorer.GetDisplayOrder();
 
             AddGroupToFormGroupContents(
                 context,
@@ -56,7 +58,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
         {
             var inputTag = GetInputTagHelperOutput(context, output, out isCheckbox);
             
-            var inputHtml = RenderTagHelperOutput(inputTag, _encoder);
+            var inputHtml = inputTag.Render(_encoder);
             var label = GetLabelAsHtml(context, output, inputTag, isCheckbox);
             var info = GetInfoAsHtml(context, output, inputTag, isCheckbox);
             var validation = isCheckbox ? "" : GetValidationAsHtml(context, output, inputTag);
@@ -79,7 +81,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
             var attributeList = new TagHelperAttributeList { { "class", "text-danger" } };
 
-            return RenderTagHelper(attributeList, context, validationMessageTagHelper, _encoder, "span", TagMode.StartTagAndEndTag, true);
+            return validationMessageTagHelper.Render(attributeList, context, _encoder, "span", TagMode.StartTagAndEndTag, true);
         }
 
         protected virtual string GetContent(TagHelperContext context, TagHelperOutput output, string label, string inputHtml, string validation, string infoHtml, bool isCheckbox)
@@ -100,7 +102,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
         protected virtual TagHelper GetInputTagHelper(TagHelperContext context, TagHelperOutput output)
         {
-            var textAreaAttribute = GetAttribute<TextArea>(TagHelper.AspFor.ModelExplorer);
+            var textAreaAttribute = TagHelper.AspFor.ModelExplorer.GetAttribute<TextArea>();
 
             if (textAreaAttribute != null)
             {
@@ -122,7 +124,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
         {
             var tagHelper = GetInputTagHelper(context, output);
 
-            var inputTagHelperOutput = GetInnerTagHelper(GetInputAttributes(context, output), context, tagHelper, "input");
+            var inputTagHelperOutput = tagHelper.GetTagHelperOutput(GetInputAttributes(context, output), context, "input");
 
             ConvertToTextAreaIfTextArea(inputTagHelperOutput);
             AddDisabledAttribute(inputTagHelperOutput);
@@ -159,7 +161,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
         protected virtual void AddDisabledAttribute(TagHelperOutput inputTagHelperOutput)
         {
             if (inputTagHelperOutput.Attributes.ContainsName("disabled") == false && 
-                     (TagHelper.IsDisabled || GetAttribute<DisabledInput>(TagHelper.AspFor.ModelExplorer) != null))
+                     (TagHelper.IsDisabled || TagHelper.AspFor.ModelExplorer.GetAttribute<DisabledInput>() != null))
             {
                 inputTagHelperOutput.Attributes.Add("disabled", "");
             }
@@ -168,7 +170,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
         protected virtual void AddReadOnlyAttribute(TagHelperOutput inputTagHelperOutput)
         {
             if (inputTagHelperOutput.Attributes.ContainsName("readonly") == false && 
-                    (TagHelper.IsReadonly != false || GetAttribute<ReadOnlyInput>(TagHelper.AspFor.ModelExplorer) != null))
+                    (TagHelper.IsReadonly != false || TagHelper.AspFor.ModelExplorer.GetAttribute<ReadOnlyInput>() != null))
             {
                 inputTagHelperOutput.Attributes.Add("readonly", "");
             }
@@ -181,7 +183,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 return;
             }
 
-            var attribute = GetAttribute<Placeholder>(TagHelper.AspFor.ModelExplorer);
+            var attribute = TagHelper.AspFor.ModelExplorer.GetAttribute<Placeholder>();
 
             if (attribute != null)
             {
@@ -193,7 +195,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
         protected virtual void AddInfoTextId(TagHelperOutput inputTagHelperOutput)
         {
-            if (GetAttribute<InputInfoText>(TagHelper.AspFor.ModelExplorer) == null)
+            if (TagHelper.AspFor.ModelExplorer.GetAttribute<InputInfoText>() == null)
             {
                 return;
             }
@@ -241,7 +243,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 return "";
             }
 
-            return GetAttribute<RequiredAttribute>(TagHelper.AspFor.ModelExplorer) != null ? "<span> * </span>":"";
+            return TagHelper.AspFor.ModelExplorer.GetAttribute<RequiredAttribute>() != null ? "<span> * </span>":"";
         }
 
         protected virtual string GetInfoAsHtml(TagHelperContext context, TagHelperOutput output, TagHelperOutput inputTag, bool isCheckbox)
@@ -264,7 +266,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             }
             else
             {
-                var infoAttribute = GetAttribute<InputInfoText>(TagHelper.AspFor.ModelExplorer);
+                var infoAttribute = TagHelper.AspFor.ModelExplorer.GetAttribute<InputInfoText>();
                 if (infoAttribute != null)
                 {
                     text = infoAttribute.Text;
@@ -298,12 +300,12 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 attributeList.AddClass("custom-control-label");
             }
 
-            return RenderTagHelper(attributeList, context, labelTagHelper, _encoder, "label", TagMode.StartTagAndEndTag, true);
+            return labelTagHelper.Render(attributeList, context, _encoder, "label", TagMode.StartTagAndEndTag, true);
         }
 
         protected virtual void ConvertToTextAreaIfTextArea(TagHelperOutput tagHelperOutput)
         {
-            var textAreaAttribute = GetAttribute<TextArea>(TagHelper.AspFor.ModelExplorer);
+            var textAreaAttribute = TagHelper.AspFor.ModelExplorer.GetAttribute<TextArea>();
 
             if (textAreaAttribute == null)
             {
@@ -355,7 +357,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
         protected virtual string GetSize(TagHelperContext context, TagHelperOutput output)
         {
-            var attribute = GetAttribute<FormControlSize>(TagHelper.AspFor.ModelExplorer);
+            var attribute = TagHelper.AspFor.ModelExplorer.GetAttribute<FormControlSize>();
 
             if (attribute != null)
             {
@@ -379,5 +381,27 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
         {
             return inputTag.Attributes.Any(a => a.Name.ToLowerInvariant() == "type" && a.Value.ToString().ToLowerInvariant() == "hidden");
         }
+
+        protected virtual string GetIdAttributeAsString(TagHelperOutput inputTag)
+        {
+            var idAttr = inputTag.Attributes.FirstOrDefault(a => a.Name == "id");
+
+            return idAttr != null ? "for=\"" + idAttr.Value + "\"" : "";
+        }
+
+        protected virtual void AddGroupToFormGroupContents(TagHelperContext context, string propertyName, string html, int order, out bool surpress)
+        {
+            var list = context.GetValue<List<FormGroupItem>>(FormGroupContents) ?? new List<FormGroupItem>();
+            surpress = list != null;
+
+            if (list != null && !list.Any(igc => igc.HtmlContent.Contains("id=\"" + propertyName.Replace('.', '_') + "\"")))
+            {
+                list.Add(new FormGroupItem
+                {
+                    HtmlContent = html,
+                    Order = order
+                });
+            }
+        }
     }
 }

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpRadioInputTagHelperService.cs

@@ -7,6 +7,7 @@ using Microsoft.AspNetCore.Mvc.Rendering;
 using Microsoft.AspNetCore.Mvc.ViewFeatures;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Microsoft.Extensions.Localization;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 {
@@ -24,7 +25,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             var selectItems = GetSelectItems(context,output);
             SetSelectedValue(context, output, selectItems);
 
-            var order = GetInputOrder(TagHelper.AspFor.ModelExplorer);
+            var order = TagHelper.AspFor.ModelExplorer.GetDisplayOrder();
 
             var html = GetHtml(context, output, selectItems);
 
@@ -78,7 +79,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 return GetSelectItemsFromEnum(context, output, TagHelper.AspFor.ModelExplorer);
             }
 
-            var selectItemsAttribute = GetAttribute<SelectItems>(TagHelper.AspFor.ModelExplorer);
+            var selectItemsAttribute = TagHelper.AspFor.ModelExplorer.GetAttribute<SelectItems>();
             if (selectItemsAttribute != null)
             {
                 return GetSelectItemsFromAttribute(selectItemsAttribute, TagHelper.AspFor.ModelExplorer);
@@ -155,5 +156,20 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
             return TagHelper.AspFor.ModelExplorer.Model?.ToString();
         }
+
+        protected virtual void AddGroupToFormGroupContents(TagHelperContext context, string propertyName, string html, int order, out bool surpress)
+        {
+            var list = context.GetValue<List<FormGroupItem>>(FormGroupContents) ?? new List<FormGroupItem>();
+            surpress = list != null;
+
+            if (list != null && !list.Any(igc => igc.HtmlContent.Contains("id=\"" + propertyName.Replace('.', '_') + "\"")))
+            {
+                list.Add(new FormGroupItem
+                {
+                    HtmlContent = html,
+                    Order = order
+                });
+            }
+        }
     }
 }

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpSelectTagHelperService.cs

@@ -10,6 +10,7 @@ using Microsoft.AspNetCore.Mvc.ViewFeatures;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Microsoft.Extensions.Localization;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 {
@@ -30,7 +31,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
         {
             var innerHtml = GetFormInputGroupAsHtml(context, output);
 
-            var order = GetInputOrder(TagHelper.AspFor.ModelExplorer);
+            var order = TagHelper.AspFor.ModelExplorer.GetDisplayOrder();
 
             AddGroupToFormGroupContents(context, TagHelper.AspFor.Name, SurroundInnerHtmlAndGet(context, output, innerHtml), order, out var surpress);
 
@@ -51,7 +52,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
         protected virtual string GetFormInputGroupAsHtml(TagHelperContext context, TagHelperOutput output)
         {
             var selectTag = GetSelectTag(context, output);
-            var selectAsHtml = RenderTagHelperOutput(selectTag, _encoder);
+            var selectAsHtml = selectTag.Render(_encoder);
             var label = GetLabelAsHtml(context, output, selectTag);
             var validation = GetValidationAsHtml(context, output, selectTag);
             var infoText = GetInfoAsHtml(context, output, selectTag);
@@ -73,7 +74,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 ViewContext = TagHelper.ViewContext
             };
 
-            var selectTagHelperOutput = GetInnerTagHelper(GetInputAttributes(context, output), context, selectTagHelper, "select", TagMode.StartTagAndEndTag);
+            var selectTagHelperOutput = selectTagHelper.GetTagHelperOutput(GetInputAttributes(context, output), context, "select", TagMode.StartTagAndEndTag);
 
             selectTagHelperOutput.Attributes.AddClass("form-control");
             selectTagHelperOutput.Attributes.AddClass(GetSize(context, output));
@@ -85,7 +86,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
         protected virtual void AddDisabledAttribute(TagHelperOutput inputTagHelperOutput)
         {
-            var disabledAttribute = GetAttribute<DisabledInput>(TagHelper.AspFor.ModelExplorer);
+            var disabledAttribute = TagHelper.AspFor.ModelExplorer.GetAttribute<DisabledInput>();
 
             if (disabledAttribute != null && !inputTagHelperOutput.Attributes.ContainsName("disabled"))
             {
@@ -105,7 +106,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 return GetSelectItemsFromEnum(context, output, TagHelper.AspFor.ModelExplorer);
             }
 
-            var selectItemsAttribute = GetAttribute<SelectItems>(TagHelper.AspFor.ModelExplorer);
+            var selectItemsAttribute = TagHelper.AspFor.ModelExplorer.GetAttribute<SelectItems>();
             if (selectItemsAttribute != null)
             {
                 return GetSelectItemsFromAttribute(selectItemsAttribute, TagHelper.AspFor.ModelExplorer);
@@ -132,12 +133,12 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 return "";
             }
 
-            return GetAttribute<RequiredAttribute>(TagHelper.AspFor.ModelExplorer) != null ? "<span> * </span>" : "";
+            return TagHelper.AspFor.ModelExplorer.GetAttribute<RequiredAttribute>() != null ? "<span> * </span>" : "";
         }
 
         protected virtual void AddInfoTextId(TagHelperOutput inputTagHelperOutput)
         {
-            if (GetAttribute<InputInfoText>(TagHelper.AspFor.ModelExplorer) == null)
+            if (TagHelper.AspFor.ModelExplorer.GetAttribute<InputInfoText>() == null)
             {
                 return;
             }
@@ -164,7 +165,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             }
             else
             {
-                var infoAttribute = GetAttribute<InputInfoText>(TagHelper.AspFor.ModelExplorer);
+                var infoAttribute = TagHelper.AspFor.ModelExplorer.GetAttribute<InputInfoText>();
                 if (infoAttribute != null)
                 {
                     text = infoAttribute.Text;
@@ -227,7 +228,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 ViewContext = TagHelper.ViewContext
             };
 
-            return RenderTagHelper(new TagHelperAttributeList(), context, labelTagHelper, _encoder, "label", TagMode.StartTagAndEndTag, true);
+            return labelTagHelper.Render(new TagHelperAttributeList(), context, _encoder, "label", TagMode.StartTagAndEndTag, true);
         }
 
         protected virtual string GetValidationAsHtml(TagHelperContext context, TagHelperOutput output, TagHelperOutput inputTag)
@@ -240,12 +241,12 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
             var attributeList = new TagHelperAttributeList { { "class", "text-danger" } };
 
-            return RenderTagHelper(attributeList, context, validationMessageTagHelper, _encoder, "span", TagMode.StartTagAndEndTag, true);
+            return validationMessageTagHelper.Render(attributeList, context, _encoder, "span", TagMode.StartTagAndEndTag, true);
         }
 
         protected virtual string GetSize(TagHelperContext context, TagHelperOutput output)
         {
-            var attribute = GetAttribute<FormControlSize>(TagHelper.AspFor.ModelExplorer);
+            var attribute = TagHelper.AspFor.ModelExplorer.GetAttribute<FormControlSize>();
 
             if (attribute != null)
             {
@@ -296,5 +297,27 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 output.Attributes.Add(newAttritube);
             }
         }
+
+        protected virtual string GetIdAttributeAsString(TagHelperOutput inputTag)
+        {
+            var idAttr = inputTag.Attributes.FirstOrDefault(a => a.Name == "id");
+
+            return idAttr != null ? "for=\"" + idAttr.Value + "\"" : "";
+        }
+
+        protected virtual void AddGroupToFormGroupContents(TagHelperContext context, string propertyName, string html, int order, out bool surpress)
+        {
+            var list = context.GetValue<List<FormGroupItem>>(FormGroupContents) ?? new List<FormGroupItem>();
+            surpress = list != null;
+
+            if (list != null && !list.Any(igc => igc.HtmlContent.Contains("id=\"" + propertyName.Replace('.', '_') + "\"")))
+            {
+                list.Add(new FormGroupItem
+                {
+                    HtmlContent = html,
+                    Order = order
+                });
+            }
+        }
     }
 }

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Pagination/AbpPaginationTagHelperService.cs

@@ -6,6 +6,7 @@ using Microsoft.AspNetCore.Mvc.ViewFeatures;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Microsoft.Extensions.Localization;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Pagination
 {
@@ -121,11 +122,11 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Pagination
 
             var anchorTagHelper = GetAnchorTagHelper(currentPage, out var attributeList);
 
-            var tagHelperOutput = GetInnerTagHelper(attributeList, context, anchorTagHelper, "a", TagMode.StartTagAndEndTag);
+            var tagHelperOutput = anchorTagHelper.GetTagHelperOutput(attributeList, context, "a", TagMode.StartTagAndEndTag);
 
             tagHelperOutput.Content.SetHtmlContent(localizer[localizationKey]);
 
-            var renderedHtml = RenderTagHelperOutput(tagHelperOutput, _encoder);
+            var renderedHtml = tagHelperOutput.Render(_encoder);
 
             return renderedHtml;
         }

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Tab/AbpTabDropdownTagHelperService.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Tab
 {
@@ -17,7 +18,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Tab
             await output.GetChildContentAsync();
             var tabHeader = GetTabHeaderItem(context, output);
 
-            var tabHeaderItems = GetValueFromContext<List<TabItem>>(context, TabItems);
+            var tabHeaderItems = context.GetValue<List<TabItem>>(TabItems);
 
             tabHeaderItems.Add(new TabItem(tabHeader, "", false, TagHelper.Name, "", true));
 

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Tab/AbpTabLinkTagHelperService.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Tab
 {
@@ -12,7 +13,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Tab
             
             var tabHeader = GetTabHeaderItem(context, output);
 
-            var tabHeaderItems = GetValueFromContext<List<TabItem>>(context, TabItems);
+            var tabHeaderItems = context.GetValue<List<TabItem>>(TabItems);
 
             tabHeaderItems.Add(new TabItem(tabHeader, "", false, TagHelper.Name, TagHelper.ParentDropdownName, false));
 

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Tab/AbpTabTagHelperService.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Tab
 {
@@ -14,7 +15,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Tab
             var tabHeader = GetTabHeaderItem(context, output);
             var tabContent = GetTabContentItem(innerContent.GetContent());
 
-            var tabHeaderItems = GetValueFromContext<List<TabItem>>(context, TabItems);
+            var tabHeaderItems = context.GetValue<List<TabItem>>(TabItems);
 
             var active = TagHelper.Active ?? false;