An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
to support a webform project, your web host has to have windows, IIS and asp.net 4.* support. as your host supports php, its probably a Wordpress host, which does not support asp.net webforms.
you will probably need to need to pick a hosting provider, or convert your site to php. if you need to use sqlserver, that needs to one of their options. most php hosts support MySql
https://www.w3schools.com/php/
as this is a ms site, the only hosting provider we can recommend is azure: