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实体框架自动生成主键

我是Entity Framework的新手.我有一个简单的课程:

 public class User
{
    [System.ComponentModel.DataAnnotations.Schema.DatabaseGenerated(System.ComponentModel.DataAnnotations.Schema.DatabaseGeneratedOption.Identity)]
    public int UserId { get; set; }
    public string Email { get; set; }
    public string UserName { get; set; }
    public string Password { get; set; }

    //public UserList Users { get; set; }

    public User() { }
    public User(int userId, string email, string username)
    {
        UserId = userId;
        Email = email;
        UserName = username;
    }
}
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我的初始化程序类:

public class UserDataInitializer : DropCreateDatabaseAlways<UserDataContext>
{
    protected override void Seed(UserDataContext context)
    {
        var Users …
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c# entity-framework

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