by one clicking send data to Email and database

Hi,

Please check the following article to learn logic of Sending email Using ASP.Net & ASP.NET Core.

Rererence :

http://www.c-sharpcorner.com/UploadFile/2a6dc5/send-multiple-email-with-attachment-using-Asp-Net-with-C-Sharp/

http://www.c-sharpcorner.com/article/send-email-using-asp-net-core-1-1-with-mailkit-in-visual-studio-2017/

This article describe the simple way to create Code First Migration :

http://www.c-sharpcorner.com/article/code-first-migration-asp-net-core-mvc-6-with-entityframework-core/