如何在ASP.NET Identity中为帐户创建和身份验证在用户名和密码中添加一个字段？

Question

I am trying to register and authenticate users who need more than username and password for authentication because their username is their school registration number and we are enrolling many schools on our platform where registration number may clash and wouldn't be unique anymore except we distinguish it with School Id ...

For instance, when searching for the user within the model instead of using this

    var user = UserManager.Find(model.UserName, model.Password);

We use

    var user = UserManager.Find(model.UserName, model.Password, model.SchooId);

Answer 1

You need to create a new model that inherits from IdentityUser:

public class ApplicationUser : IdentityUser
{
    //add more attributes
    public string SchoolID { get; set; }

}