in MVC
framework
<a asp-controller="controller_name" asp-action="action_name"> link title </a>
<!-- if you use area -->
<a asp-area="area_name" asp-controller="controller_name" asp-action="action_name"> link title </a>
<!-- or -->
@Html.ActionLink("link title", "action_name", "controller_name", new {Id=3})
in web-page
projects
<!-- absolote address -->
<a asp-page="/Admin/Index"> title </a>
<!-- local address with additional info -->
<a asp-page="./Delete" asp-route-id="id_value"> title </a>