diff --git a/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalFooterTagHelperService.cs b/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalFooterTagHelperService.cs
index b906a3a613..ac5365c989 100644
--- a/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalFooterTagHelperService.cs
+++ b/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalFooterTagHelperService.cs
@@ -22,7 +22,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Modal
             output.Content.SetHtmlContent(CreateContent());
         }
 
-        private string CreateContent()
+        protected virtual string CreateContent()
         {
             var sb = new StringBuilder();
 
diff --git a/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalHeaderTagHelperService.cs b/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalHeaderTagHelperService.cs
index 9e86d52999..bbd739c789 100644
--- a/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalHeaderTagHelperService.cs
+++ b/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalHeaderTagHelperService.cs
@@ -13,7 +13,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Modal
             output.Content.SetHtmlContent(CreateContent());
         }
 
-        private string CreateContent()
+        protected virtual string CreateContent()
         {
             var sb = new StringBuilder();
 
diff --git a/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelperService.cs b/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelperService.cs
index f9e0e97609..4abb99b5f4 100644
--- a/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelperService.cs
+++ b/src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Modal/AbpModalTagHelperService.cs
@@ -12,7 +12,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Modal
             output.PostContent.SetHtmlContent(CreatePostContent());
         }
 
-        private string CreatePreContent()
+        protected virtual string CreatePreContent()
         {
             var sb = new StringBuilder();
 
@@ -23,7 +23,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Modal
             return sb.ToString();
         }
 
-        private string CreatePostContent()
+        protected virtual string CreatePostContent()
         {
             var sb = new StringBuilder();