User-1104521819 posted
Thank you very much for answering me! The situation of mine is as follow:
I use Visual Studio Community 2017;
I build project of Asp.net MVC and WebApi;
I choose the authentication of "Individual user Accounts";
I finded e-mail confirmation module is contained in the system class "IdentityUser", and with this the database will automatically be built with e-mail account.