Asp Core Cascade Drop Down List without using Entity framewo

Please refer below link, and you can change the Database Call. you can use ADO.NET instead of EF

https://forums.asp.net/t/2151410.aspx?How+To+Create+Cascading+Dropdownlist+on+ASP+Net+Core+2+2+

All soultions are entity framework based i said in question without using entity framework

Please refer the article below

https://www.c-sharpcorner.com/article/creating-simple-cascading-dropdownlist-in-asp-net-core-mvc-with-new-tag-helpers/

https://stackoverflow.com/questions/41022433/asp-net-mvc-core-cascading-dropdownlist/41023184

https://ankitsharmablogs.com/cascading-dropdownlist-in-blazor-using-ef-core/