ASP.core Core Dynamic Form Builder Application

Build Asp.net core MVC Dynamic form builder, Entity framework core code first migration, Admin of the application should be able to add dynamic controls to existing application, Example. Contact Page has only two field at present, First Name and Last Name, and back end table has two columns only firstname and lastname, Now admin can add two more fields one drop down country and one text box city, From the form designer admin will drag the control to form and automictically the contact table have two more column will be added. once Column country int foreign key and one city column as varchar. Once more table should be added for country master automatically in back end and admin should be able to add as many entry in Country table later on. This is just concept. The plan if admin wants to add controls they will click on setting button on the form and left side side bar should be shown with available controls. and admin will drag required controls (text Box, DateBox, Dropdown List, List Box, Auto Complete List). need one report where I should be able to export data of standard field as well as added custom fields.