diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/Microsoft/AspNetCore/Razor/TagHelpers/AbpTagHelperAttributeListExtensions.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/Microsoft/AspNetCore/Razor/TagHelpers/AbpTagHelperAttributeListExtensions.cs
index 0109ff8f04..168d756c16 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/Microsoft/AspNetCore/Razor/TagHelpers/AbpTagHelperAttributeListExtensions.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/Microsoft/AspNetCore/Razor/TagHelpers/AbpTagHelperAttributeListExtensions.cs
@@ -21,7 +21,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHel
             }
             else
             {
-                var existingClasses = classAttribute.Value.ToString().Split(new [] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
+                var existingClasses = classAttribute.Value.ToString().Split(new [] { ' ' }, StringSplitOptions.RemoveEmptyEntries).ToList();
                 existingClasses.AddIfNotContains(className);
                 attributes.SetAttribute("class", string.Join(" ", existingClasses));
             }
@@ -40,10 +40,10 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHel
                 return;
             }
 
-            var existingClassList = classAttribute.Value.ToString().Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
-            var modifiedClassList = existingClassList.RemoveAll(c => c == className);
+            var classList = classAttribute.Value.ToString().Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).ToList();
+            classList.RemoveAll(c => c == className);
 
-            attributes.SetAttribute("class", modifiedClassList.JoinAsString(" "));
+            attributes.SetAttribute("class", classList.JoinAsString(" "));
         }
 
         public static void AddIfNotContains(this TagHelperAttributeList attributes, string name, object value)
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Dropdown/AbpDropdownButtonTagHelperService.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Dropdown/AbpDropdownButtonTagHelperService.cs
index ee17262d96..673204b302 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Dropdown/AbpDropdownButtonTagHelperService.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Dropdown/AbpDropdownButtonTagHelperService.cs
@@ -28,7 +28,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Dropdown
         {
             var content = await output.GetChildContentAsync();
 
-            var buttonsAsHtml = GetButtonsAsHtml(context, output, content);
+            var buttonsAsHtml = await GetButtonsAsHtmlAsync(context, output, content);
 
             output.PreElement.SetHtmlContent(buttonsAsHtml);
 
@@ -38,17 +38,18 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Dropdown
             output.Attributes.Clear();
         }
 
-        protected virtual string GetButtonsAsHtml(TagHelperContext context, TagHelperOutput output, TagHelperContent content)
+        protected virtual async Task<string> GetButtonsAsHtmlAsync(TagHelperContext context, TagHelperOutput output,
+            TagHelperContent content)
         {
             var buttonBuilder = new StringBuilder("");
 
-            var mainButton = GetMainButton(context, output, content);
+            var mainButton = await GetMainButtonAsync(context, output, content);
 
             buttonBuilder.AppendLine(mainButton);
 
             if (TagHelper.DropdownStyle == DropdownStyle.Split)
             {
-                var splitButton = GetSplitButton(context, output);
+                var splitButton = await GetSplitButtonAsync(context, output);
 
                 buttonBuilder.AppendLine(splitButton);
             }
@@ -56,7 +57,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Dropdown
             return buttonBuilder.ToString();
         }
 
-        protected virtual string GetMainButton(TagHelperContext context, TagHelperOutput output, TagHelperContent content)
+        protected virtual async Task<string> GetMainButtonAsync(TagHelperContext context, TagHelperOutput output, TagHelperContent content)
         {
             var abpButtonTagHelper = _serviceProvider.GetRequiredService<AbpButtonTagHelper>();
             
@@ -67,7 +68,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Dropdown
             abpButtonTagHelper.ButtonType = TagHelper.ButtonType;
             var attributes = GetAttributesForMainButton(context, output);
 
-            var buttonTag = abpButtonTagHelper.ProcessAndGetOutput(attributes, context, "button", TagMode.StartTagAndEndTag);
+            var buttonTag = await abpButtonTagHelper.ProcessAndGetOutputAsync(attributes, context, "button", TagMode.StartTagAndEndTag);
 
             buttonTag.PreContent.SetHtmlContent(content.GetContent());
 
@@ -80,7 +81,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Dropdown
             return buttonTag.Render(_htmlEncoder);
         }
 
-        protected virtual string GetSplitButton(TagHelperContext context, TagHelperOutput output)
+        protected virtual async Task<string> GetSplitButtonAsync(TagHelperContext context, TagHelperOutput output)
         {
             var abpButtonTagHelper = _serviceProvider.GetRequiredService<AbpButtonTagHelper>();
 
@@ -88,7 +89,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Dropdown
             abpButtonTagHelper.ButtonType = TagHelper.ButtonType;
             var attributes = GetAttributesForSplitButton(context, output);
 
-            return abpButtonTagHelper.Render(attributes, context, _htmlEncoder, "button", TagMode.StartTagAndEndTag);
+            return await abpButtonTagHelper.RenderAsync(attributes, context, _htmlEncoder, "button", TagMode.StartTagAndEndTag);
         }
 
         protected virtual TagHelperAttributeList GetAttributesForMainButton(TagHelperContext context, TagHelperOutput output)
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Extensions/TagHelperExtensions.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Extensions/TagHelperExtensions.cs
index ee984474d2..d925fd11e8 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Extensions/TagHelperExtensions.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Extensions/TagHelperExtensions.cs
@@ -8,7 +8,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions
 {
     public static class TagHelperExtensions
     {
-        public static TagHelperOutput ProcessAndGetOutput(this TagHelper tagHelper, TagHelperAttributeList attributeList, TagHelperContext context, string tagName = "div", TagMode tagMode = TagMode.SelfClosing, bool runAsync = false)
+        public static async Task<TagHelperOutput> ProcessAndGetOutputAsync(this TagHelper tagHelper, TagHelperAttributeList attributeList, TagHelperContext context, string tagName = "div", TagMode tagMode = TagMode.SelfClosing)
         {
             var innerOutput = new TagHelperOutput(tagName, attributeList, (useCachedResult, encoder) => Task.Run<TagHelperContent>(() => new DefaultTagHelperContent()))
             {
@@ -19,21 +19,14 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Extensions
 
             tagHelper.Init(context);
 
-            if (runAsync)
-            {
-                AsyncHelper.RunSync(() => tagHelper.ProcessAsync(innerContext, innerOutput));
-            }
-            else
-            {
-                tagHelper.Process(innerContext, innerOutput);
-            }
+            await tagHelper.ProcessAsync(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)
+        public static async Task<string> RenderAsync(this TagHelper tagHelper, TagHelperAttributeList attributeList, TagHelperContext context, HtmlEncoder htmlEncoder, string tagName = "div", TagMode tagMode = TagMode.SelfClosing)
         {
-            var innerOutput = tagHelper.ProcessAndGetOutput(attributeList, context, tagName, tagMode, runAsync);
+            var innerOutput = await tagHelper.ProcessAndGetOutputAsync(attributeList, context, tagName, tagMode);
 
             return innerOutput.Render(htmlEncoder);
         }
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpDynamicformTagHelperService.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpDynamicformTagHelperService.cs
index c7b20c6a33..ee2a920980 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpDynamicformTagHelperService.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpDynamicformTagHelperService.cs
@@ -41,7 +41,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
             await ConvertToMvcForm(context, output);
 
-            ProcessFields(context, output);
+            await ProcessFieldsAsync(context, output);
 
             SetContent(context, output, list, childContent);
 
@@ -67,7 +67,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 ViewContext = TagHelper.ViewContext
             };
 
-            var formTagOutput = formTagHelper.ProcessAndGetOutput(output.Attributes, context, "form", TagMode.StartTagAndEndTag);
+            var formTagOutput = await formTagHelper.ProcessAndGetOutputAsync(output.Attributes, context, "form", TagMode.StartTagAndEndTag);
 
             await formTagOutput.GetChildContentAsync();
 
@@ -114,7 +114,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 return;
             }
 
-            var buttonHtml = ProcessSubmitButtonAndGetContent(context, output);
+            var buttonHtml = ProcessSubmitButtonAndGetContentAsync(context, output);
 
             output.PostContent.SetHtmlContent(output.PostContent.GetContent() + buttonHtml);
         }
@@ -126,7 +126,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             return items;
         }
 
-        protected virtual void ProcessFields(TagHelperContext context, TagHelperOutput output)
+        protected virtual async Task ProcessFieldsAsync(TagHelperContext context, TagHelperOutput output)
         {
             var models = GetModels(context, output);
 
@@ -134,20 +134,20 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             {
                 if (IsSelectGroup(context, model))
                 {
-                    ProcessSelectGroup(context, output, model);
+                    await ProcessSelectGroupAsync(context, output, model);
                 }
                 else
                 {
-                    ProcessInputGroup(context, output, model);
+                    await ProcessInputGroupAsync(context, output, model);
                 }
             }
         }
 
-        protected virtual void ProcessSelectGroup(TagHelperContext context, TagHelperOutput output, ModelExpression model)
+        protected virtual async Task ProcessSelectGroupAsync(TagHelperContext context, TagHelperOutput output, ModelExpression model)
         {
             var abpSelectTagHelper = GetSelectGroupTagHelper(context, output, model);
 
-            abpSelectTagHelper.Render(new TagHelperAttributeList(), context, _htmlEncoder, "div", TagMode.StartTagAndEndTag);
+            await abpSelectTagHelper.RenderAsync(new TagHelperAttributeList(), context, _htmlEncoder, "div", TagMode.StartTagAndEndTag);
         }
 
         protected virtual AbpTagHelper GetSelectGroupTagHelper(TagHelperContext context, TagHelperOutput output, ModelExpression model)
@@ -178,24 +178,24 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             return abpRadioInputTagHelper;
         }
 
-        protected virtual string ProcessSubmitButtonAndGetContent(TagHelperContext context, TagHelperOutput output)
+        protected virtual async Task<string> ProcessSubmitButtonAndGetContentAsync(TagHelperContext context, TagHelperOutput output)
         {
             var abpButtonTagHelper = _serviceProvider.GetRequiredService<AbpButtonTagHelper>();
             var attributes = new TagHelperAttributeList { new TagHelperAttribute("type", "submit") };
             abpButtonTagHelper.Text = "Submit";
             abpButtonTagHelper.ButtonType = AbpButtonType.Primary;
 
-            return abpButtonTagHelper.Render(attributes, context, _htmlEncoder, "button", TagMode.StartTagAndEndTag);
+            return await abpButtonTagHelper.RenderAsync(attributes, context, _htmlEncoder, "button", TagMode.StartTagAndEndTag);
         }
 
-        protected virtual void ProcessInputGroup(TagHelperContext context, TagHelperOutput output, ModelExpression model)
+        protected virtual async Task ProcessInputGroupAsync(TagHelperContext context, TagHelperOutput output, ModelExpression model)
         {
             var abpInputTagHelper = _serviceProvider.GetRequiredService<AbpInputTagHelper>();
             abpInputTagHelper.AspFor = model;
             abpInputTagHelper.ViewContext = TagHelper.ViewContext;
             abpInputTagHelper.DisplayRequiredSymbol = TagHelper.RequiredSymbols ?? true;
 
-            abpInputTagHelper.Render(new TagHelperAttributeList(), context, _htmlEncoder, "div", TagMode.StartTagAndEndTag);
+            await abpInputTagHelper.RenderAsync(new TagHelperAttributeList(), context, _htmlEncoder, "div", TagMode.StartTagAndEndTag);
         }
 
         protected virtual List<ModelExpression> GetModels(TagHelperContext context, TagHelperOutput output)
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpInputTagHelperService.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpInputTagHelperService.cs
index dc2f04b623..fb549d3067 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpInputTagHelperService.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpInputTagHelperService.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using System.Text.Encodings.Web;
+using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc.TagHelpers;
 using Microsoft.AspNetCore.Mvc.ViewFeatures;
 using Microsoft.AspNetCore.Razor.TagHelpers;
@@ -24,16 +25,16 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             _tagHelperLocalizer = tagHelperLocalizer;
         }
 
-        public override void Process(TagHelperContext context, TagHelperOutput output)
+        public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
         {
-            var innerHtml = GetFormInputGroupAsHtml(context, output, out var isCheckbox);
+            var (innerHtml, isCheckBox) = await GetFormInputGroupAsHtmlAsync(context, output);
 
             var order = TagHelper.AspFor.ModelExplorer.GetDisplayOrder();
 
             AddGroupToFormGroupContents(
                 context,
                 TagHelper.AspFor.Name,
-                SurroundInnerHtmlAndGet(context, output, innerHtml, isCheckbox),
+                SurroundInnerHtmlAndGet(context, output, innerHtml, isCheckBox),
                 order,
                 out var suppress
             );
@@ -47,26 +48,26 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 output.TagMode = TagMode.StartTagAndEndTag;
                 output.TagName = "div";
                 LeaveOnlyGroupAttributes(context, output);
-                output.Attributes.AddClass(isCheckbox ? "custom-checkbox" : "form-group");
-                output.Attributes.AddClass(isCheckbox ? "custom-control" : "");
-                output.Attributes.AddClass(isCheckbox ? "mb-2" : "");
+                output.Attributes.AddClass(isCheckBox ? "custom-checkbox" : "form-group");
+                output.Attributes.AddClass(isCheckBox ? "custom-control" : "");
+                output.Attributes.AddClass(isCheckBox ? "mb-2" : "");
                 output.Content.SetHtmlContent(output.Content.GetContent() + innerHtml);
             }
         }
 
-        protected virtual string GetFormInputGroupAsHtml(TagHelperContext context, TagHelperOutput output, out bool isCheckbox)
+        protected virtual async Task<(string, bool)> GetFormInputGroupAsHtmlAsync(TagHelperContext context, TagHelperOutput output)
         {
-            var inputTag = GetInputTagHelperOutput(context, output, out isCheckbox);
+            var (inputTag, isCheckBox) = await GetInputTagHelperOutputAsync(context, output);
             
             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);
+            var label = await GetLabelAsHtmlAsync(context, output, inputTag, isCheckBox);
+            var info = GetInfoAsHtml(context, output, inputTag, isCheckBox);
+            var validation = isCheckBox ? "" : await GetValidationAsHtmlAsync(context, output, inputTag);
 
-            return GetContent(context, output, label, inputHtml, validation, info, isCheckbox);
+            return (GetContent(context, output, label, inputHtml, validation, info, isCheckBox), isCheckBox);
         }
 
-        protected virtual string GetValidationAsHtml(TagHelperContext context, TagHelperOutput output, TagHelperOutput inputTag)
+        protected virtual async Task<string> GetValidationAsHtmlAsync(TagHelperContext context, TagHelperOutput output, TagHelperOutput inputTag)
         {
             if (IsOutputHidden(inputTag))
             {
@@ -81,7 +82,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
             var attributeList = new TagHelperAttributeList { { "class", "text-danger" } };
 
-            return validationMessageTagHelper.Render(attributeList, context, _encoder, "span", TagMode.StartTagAndEndTag, true);
+            return await validationMessageTagHelper.RenderAsync(attributeList, context, _encoder, "span", TagMode.StartTagAndEndTag);
         }
 
         protected virtual string GetContent(TagHelperContext context, TagHelperOutput output, string label, string inputHtml, string validation, string infoHtml, bool isCheckbox)
@@ -120,22 +121,22 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             };
         }
 
-        protected virtual TagHelperOutput GetInputTagHelperOutput(TagHelperContext context, TagHelperOutput output, out bool isCheckbox)
+        protected virtual async Task<(TagHelperOutput, bool)> GetInputTagHelperOutputAsync(TagHelperContext context, TagHelperOutput output)
         {
             var tagHelper = GetInputTagHelper(context, output);
 
-            var inputTagHelperOutput = tagHelper.ProcessAndGetOutput(GetInputAttributes(context, output), context, "input");
+            var inputTagHelperOutput = await tagHelper.ProcessAndGetOutputAsync(GetInputAttributes(context, output), context, "input");
 
             ConvertToTextAreaIfTextArea(inputTagHelperOutput);
             AddDisabledAttribute(inputTagHelperOutput);
             AddAutoFocusAttribute(inputTagHelperOutput);
-            isCheckbox = IsInputCheckbox(context, output, inputTagHelperOutput.Attributes);
+            var isCheckbox = IsInputCheckbox(context, output, inputTagHelperOutput.Attributes);
             AddFormControlClass(context, output, isCheckbox, inputTagHelperOutput);
             AddReadOnlyAttribute(inputTagHelperOutput);
             AddPlaceholderAttribute(inputTagHelperOutput);
             AddInfoTextId(inputTagHelperOutput);
 
-            return inputTagHelperOutput;
+            return (inputTagHelperOutput, isCheckbox);
         }
 
         private void AddFormControlClass(TagHelperContext context, TagHelperOutput output, bool isCheckbox, TagHelperOutput inputTagHelperOutput)
@@ -217,7 +218,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             return attributes.Any(a => a.Value != null && a.Name == "type" && a.Value.ToString() == "checkbox");
         }
 
-        protected virtual string GetLabelAsHtml(TagHelperContext context, TagHelperOutput output, TagHelperOutput inputTag, bool isCheckbox)
+        protected virtual async Task<string> GetLabelAsHtmlAsync(TagHelperContext context, TagHelperOutput output, TagHelperOutput inputTag, bool isCheckbox)
         {
             if (IsOutputHidden(inputTag))
             {
@@ -226,7 +227,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
             if (string.IsNullOrEmpty(TagHelper.Label))
             {
-                return GetLabelAsHtmlUsingTagHelper(context, output, isCheckbox) + GetRequiredSymbol(context, output, inputTag);
+                return await GetLabelAsHtmlUsingTagHelperAsync(context, output, isCheckbox) + GetRequiredSymbol(context, output, inputTag);
             }
 
             var checkboxClass = isCheckbox ? "class=\"custom-control-label\" " : "";
@@ -285,7 +286,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                    "</small>";
         }
 
-        protected virtual string GetLabelAsHtmlUsingTagHelper(TagHelperContext context, TagHelperOutput output, bool isCheckbox)
+        protected virtual async Task<string> GetLabelAsHtmlUsingTagHelperAsync(TagHelperContext context, TagHelperOutput output, bool isCheckbox)
         {
             var labelTagHelper = new LabelTagHelper(_generator)
             {
@@ -300,7 +301,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 attributeList.AddClass("custom-control-label");
             }
 
-            return labelTagHelper.Render(attributeList, context, _encoder, "label", TagMode.StartTagAndEndTag, true);
+            return await labelTagHelper.RenderAsync(attributeList, context, _encoder, "label", TagMode.StartTagAndEndTag);
         }
 
         protected virtual void ConvertToTextAreaIfTextArea(TagHelperOutput tagHelperOutput)
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpSelectTagHelperService.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpSelectTagHelperService.cs
index d0b1a494ae..b18bc6ed75 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpSelectTagHelperService.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpSelectTagHelperService.cs
@@ -4,6 +4,7 @@ using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using System.Reflection;
 using System.Text.Encodings.Web;
+using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc.Rendering;
 using Microsoft.AspNetCore.Mvc.TagHelpers;
 using Microsoft.AspNetCore.Mvc.ViewFeatures;
@@ -27,9 +28,9 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             _tagHelperLocalizer = tagHelperLocalizer;
         }
 
-        public override void Process(TagHelperContext context, TagHelperOutput output)
+        public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
         {
-            var innerHtml = GetFormInputGroupAsHtml(context, output);
+            var innerHtml = await GetFormInputGroupAsHtmlAsync(context, output);
 
             var order = TagHelper.AspFor.ModelExplorer.GetDisplayOrder();
 
@@ -49,12 +50,12 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             }
         }
 
-        protected virtual string GetFormInputGroupAsHtml(TagHelperContext context, TagHelperOutput output)
+        protected virtual async Task<string> GetFormInputGroupAsHtmlAsync(TagHelperContext context, TagHelperOutput output)
         {
-            var selectTag = GetSelectTag(context, output);
+            var selectTag = await GetSelectTagAsync(context, output);
             var selectAsHtml = selectTag.Render(_encoder);
-            var label = GetLabelAsHtml(context, output, selectTag);
-            var validation = GetValidationAsHtml(context, output, selectTag);
+            var label = await GetLabelAsHtmlAsync(context, output, selectTag);
+            var validation = await GetValidationAsHtmlAsync(context, output, selectTag);
             var infoText = GetInfoAsHtml(context, output, selectTag);
 
             return label + Environment.NewLine + selectAsHtml + Environment.NewLine + infoText + Environment.NewLine + validation;
@@ -65,7 +66,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             return "<div class=\"form-group\">" + Environment.NewLine + innerHtml + Environment.NewLine + "</div>";
         }
 
-        protected virtual TagHelperOutput GetSelectTag(TagHelperContext context, TagHelperOutput output)
+        protected virtual async Task<TagHelperOutput> GetSelectTagAsync(TagHelperContext context, TagHelperOutput output)
         {
             var selectTagHelper = new SelectTagHelper(_generator)
             {
@@ -74,7 +75,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 ViewContext = TagHelper.ViewContext
             };
 
-            var selectTagHelperOutput = selectTagHelper.ProcessAndGetOutput(GetInputAttributes(context, output), context, "select", TagMode.StartTagAndEndTag);
+            var selectTagHelperOutput = await selectTagHelper.ProcessAndGetOutputAsync(GetInputAttributes(context, output), context, "select", TagMode.StartTagAndEndTag);
 
             selectTagHelperOutput.Attributes.AddClass("form-control");
             selectTagHelperOutput.Attributes.AddClass(GetSize(context, output));
@@ -115,14 +116,14 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             throw new Exception("No items provided for select attribute.");
         }
 
-        protected virtual string GetLabelAsHtml(TagHelperContext context, TagHelperOutput output, TagHelperOutput selectTag)
+        protected virtual async Task<string> GetLabelAsHtmlAsync(TagHelperContext context, TagHelperOutput output, TagHelperOutput selectTag)
         {
             if (!string.IsNullOrEmpty(TagHelper.Label))
             {
                 return "<label " + GetIdAttributeAsString(selectTag) + ">" + TagHelper.Label + "</label>" + GetRequiredSymbol(context, output);
             }
 
-            return GetLabelAsHtmlUsingTagHelper(context, output) + GetRequiredSymbol(context, output);
+            return await GetLabelAsHtmlUsingTagHelperAsync(context, output) + GetRequiredSymbol(context, output);
         }
         
         protected virtual string GetRequiredSymbol(TagHelperContext context, TagHelperOutput output)
@@ -233,7 +234,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
             return selectItems;
         }
 
-        protected virtual string GetLabelAsHtmlUsingTagHelper(TagHelperContext context, TagHelperOutput output)
+        protected virtual async Task<string> GetLabelAsHtmlUsingTagHelperAsync(TagHelperContext context, TagHelperOutput output)
         {
             var labelTagHelper = new LabelTagHelper(_generator)
             {
@@ -241,10 +242,10 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
                 ViewContext = TagHelper.ViewContext
             };
 
-            return labelTagHelper.Render(new TagHelperAttributeList(), context, _encoder, "label", TagMode.StartTagAndEndTag, true);
+            return await labelTagHelper.RenderAsync(new TagHelperAttributeList(), context, _encoder, "label", TagMode.StartTagAndEndTag);
         }
 
-        protected virtual string GetValidationAsHtml(TagHelperContext context, TagHelperOutput output, TagHelperOutput inputTag)
+        protected virtual async Task<string> GetValidationAsHtmlAsync(TagHelperContext context, TagHelperOutput output, TagHelperOutput inputTag)
         {
             var validationMessageTagHelper = new ValidationMessageTagHelper(_generator)
             {
@@ -254,7 +255,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
 
             var attributeList = new TagHelperAttributeList { { "class", "text-danger" } };
 
-            return validationMessageTagHelper.Render(attributeList, context, _encoder, "span", TagMode.StartTagAndEndTag, true);
+            return await validationMessageTagHelper.RenderAsync(attributeList, context, _encoder, "span", TagMode.StartTagAndEndTag);
         }
 
         protected virtual string GetSize(TagHelperContext context, TagHelperOutput output)
diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Pagination/AbpPaginationTagHelperService.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Pagination/AbpPaginationTagHelperService.cs
index 27ee4ee55b..25307c3fee 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Pagination/AbpPaginationTagHelperService.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Pagination/AbpPaginationTagHelperService.cs
@@ -1,10 +1,10 @@
 using System.Text;
 using System.Text.Encodings.Web;
+using System.Threading.Tasks;
 using Localization.Resources.AbpUi;
 using Microsoft.AspNetCore.Mvc.TagHelpers;
 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;
 
@@ -23,7 +23,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Pagination
             _tagHelperLocalizer = tagHelperLocalizer;
         }
 
-        public override void Process(TagHelperContext context, TagHelperOutput output)
+        public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
         {
             if (TagHelper.Model.ShownItemsCount <= 0)
             {
@@ -31,17 +31,17 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Pagination
             }
 
             ProcessMainTag(context, output);
-            SetContentAsHtml(context, output);
+            await SetContentAsHtmlAsync(context, output);
         }
 
-        protected virtual void SetContentAsHtml(TagHelperContext context, TagHelperOutput output)
+        protected virtual async Task SetContentAsHtmlAsync(TagHelperContext context, TagHelperOutput output)
         {
             var html = new StringBuilder("");
 
             html.AppendLine(GetOpeningTags(context, output));
-            html.AppendLine(GetPreviousButton(context, output));
-            html.AppendLine(GetPages(context, output));
-            html.AppendLine(GetNextButton(context, output));
+            html.AppendLine(await GetPreviousButtonAsync(context, output));
+            html.AppendLine(await GetPagesAsync(context, output));
+            html.AppendLine(await GetNextButton(context, output));
             html.AppendLine(GetClosingTags(context, output));
 
             output.Content.SetHtmlContent(html.ToString());
@@ -55,19 +55,19 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Pagination
             output.Attributes.AddClass("mt-3");
         }
 
-        protected virtual string GetPages(TagHelperContext context, TagHelperOutput output)
+        protected virtual async Task<string> GetPagesAsync(TagHelperContext context, TagHelperOutput output)
         {
             var pagesHtml = new StringBuilder("");
 
             foreach (var page in TagHelper.Model.Pages)
             {
-                pagesHtml.AppendLine(GetPage(context, output, page));
+                pagesHtml.AppendLine(await GetPageAsync(context, output, page));
             }
 
             return pagesHtml.ToString();
         }
 
-        protected virtual string GetPage(TagHelperContext context, TagHelperOutput output, PageItem page)
+        protected virtual async Task<string> GetPageAsync(TagHelperContext context, TagHelperOutput output, PageItem page)
         {
             var pageHtml = new StringBuilder("");
 
@@ -86,7 +86,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Pagination
             }
             else
             {
-                pageHtml.AppendLine(RenderAnchorTagHelperLinkHtml(context, output, page.Index.ToString(), page.Index.ToString()));
+                pageHtml.AppendLine(await RenderAnchorTagHelperLinkHtmlAsync(context, output, page.Index.ToString(), page.Index.ToString()));
             }
 
             pageHtml.AppendLine("</li>");
@@ -94,7 +94,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Pagination
             return pageHtml.ToString();
         }
 
-        protected virtual string GetPreviousButton(TagHelperContext context, TagHelperOutput output)
+        protected virtual async Task<string> GetPreviousButtonAsync(TagHelperContext context, TagHelperOutput output)
         {
             var localizationKey = "PagerPrevious";
             var currentPage = TagHelper.Model.CurrentPage == 1
@@ -102,27 +102,26 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Pagination
                 : (TagHelper.Model.CurrentPage - 1).ToString();
             return
                 "<li class=\"page-item " + (TagHelper.Model.CurrentPage == 1 ? "disabled" : "") + "\">\r\n" +
-                RenderAnchorTagHelperLinkHtml(context, output, currentPage, localizationKey) +
-                "                </li>";
+                (await RenderAnchorTagHelperLinkHtmlAsync(context, output, currentPage, localizationKey)) + "                </li>";
         }
 
-        protected virtual string GetNextButton(TagHelperContext context, TagHelperOutput output)
+        protected virtual async Task<string> GetNextButton(TagHelperContext context, TagHelperOutput output)
         {
             var localizationKey = "PagerNext";
             var currentPage = (TagHelper.Model.CurrentPage + 1).ToString();
             return
                 "<li class=\"page-item " + (TagHelper.Model.CurrentPage >= TagHelper.Model.TotalPageCount ? "disabled" : "") + "\">\r\n" +
-                RenderAnchorTagHelperLinkHtml(context, output, currentPage, localizationKey) +
+                (await RenderAnchorTagHelperLinkHtmlAsync(context, output, currentPage, localizationKey)) +
                 "                </li>";
         }
 
-        protected virtual string RenderAnchorTagHelperLinkHtml(TagHelperContext context, TagHelperOutput output, string currentPage, string localizationKey)
+        protected virtual async Task<string> RenderAnchorTagHelperLinkHtmlAsync(TagHelperContext context, TagHelperOutput output, string currentPage, string localizationKey)
         {
             var localizer = _tagHelperLocalizer.GetLocalizer(typeof(AbpUiResource));
 
             var anchorTagHelper = GetAnchorTagHelper(currentPage, out var attributeList);
 
-            var tagHelperOutput = anchorTagHelper.ProcessAndGetOutput(attributeList, context, "a", TagMode.StartTagAndEndTag);
+            var tagHelperOutput = await anchorTagHelper.ProcessAndGetOutputAsync(attributeList, context, "a", TagMode.StartTagAndEndTag);
 
             tagHelperOutput.Content.SetHtmlContent(localizer[localizationKey]);
 
diff --git a/framework/src/Volo.Abp.Core/System/Collections/Generic/AbpCollectionExtensions.cs b/framework/src/Volo.Abp.Core/System/Collections/Generic/AbpCollectionExtensions.cs
index 0d5e4260f6..2a858f7626 100644
--- a/framework/src/Volo.Abp.Core/System/Collections/Generic/AbpCollectionExtensions.cs
+++ b/framework/src/Volo.Abp.Core/System/Collections/Generic/AbpCollectionExtensions.cs
@@ -88,7 +88,7 @@ namespace System.Collections.Generic
         }
 
         /// <summary>
-        /// Removed all items from the collection those satisfy the given <paramref name="predicate"/>.
+        /// Removes all items from the collection those satisfy the given <paramref name="predicate"/>.
         /// </summary>
         /// <typeparam name="T">Type of the items in the collection</typeparam>
         /// <param name="source">The collection</param>