实体框架代码首先创建数据库

Question

I am new to Entity Framework. I want to make it Database as a separate Entity In project. So I started my project with as Class Library project. Starting with Login so class created for it with inherit IdentityUser.

public class ApplicationUser : IdentityUser
{
    [Required]
    [MaxLength(200)]
    public string FirstName { get; set; }
    [Required]
    [MaxLength(500)]
    public string LastName { get; set; }
}

Now I want to create database , I have added key in App.Config.

public class AppDBContext : DbContext
{
    public AppDBContext():base("AppDBConnectionString")
    {

    }
}

Any Package Manager command to create database for first time ? Update-Database didnt work.

Answer 1

Ok, to summarize, update your class to include a key:

public class ApplicationUser : IdentityUser
{
[Key]
public int ApplicationUserId { get; set; }

[Required]
[MaxLength(200)]
public string FirstName { get; set; }
[Required]
[MaxLength(500)]
public string LastName { get; set; }
}

And update your DbSet in your AppDbContext to:

DbSet<ApplicationUser> ApplicationUsers { get; set; }