diff --git a/docs/en/UI/Angular/List-Service.md b/docs/en/UI/Angular/List-Service.md
index 5b0234c502..2f0eb9fc57 100644
--- a/docs/en/UI/Angular/List-Service.md
+++ b/docs/en/UI/Angular/List-Service.md
@@ -201,38 +201,4 @@ You may use observables in combination with [AsyncPipe](https://angular.io/guide
 
 <input type="text" name="search" [(ngModel)]="list.filter">
 ```
-ABP doesn't have a built-in filtering mechanism. You need to implement yourself and handle `filter` property in backend as seen in below. 
-
-```cs
-public class BookRequestDto : PagedAndSortedResultRequestDto
-{
-  public string Filter { get; set; }
-}
-```
-```cs
-public interface IBookAppService :
-    ICrudAppService< //Defines CRUD methods
-        BookDto, //Used to show books
-        Guid, //Primary key of the book entity
-        BookRequestDto, //Used for paging/sorting
-        CreateUpdateBookDto> //Used to create/update a book
-{
-
-}
-```
-```cs
-//Override GetListAsync in BookAppService
-
-public override async Task<PagedResultDto<BookDto>> GetListAsync(BookRequestDto input)
-{
-  var queryable = await ReadOnlyRepository.GetQueryableAsync();
-  var query = queryable.WhereIf(!string.IsNullOrEmpty(input.Filter), x => x.Name.Contains(input.Filter));
-
-  var totalCount = await AsyncExecuter.CountAsync(query);
-  var items = await AsyncExecuter.ToListAsync(query);
-  var entities = ObjectMapper.Map<List<Book>, List<BookDto>>(items);
-
-  return new PagedResultDto<BookDto>(totalCount,entities);
-}
-
-```
\ No newline at end of file
+ABP doesn't have a built-in filtering mechanism. You need to implement yourself and handle `filter` property in backend.