无法检索AspNetUsers表继承自定义属性值 [英] Cannot retrieve inherited custom property value from AspNetUsers table

问题描述

我使用ASP.NET 2.0的身份，并创建两个不同的用户从实体继承ApplicationUser上的实现实体框架6在ASP.NET MVC继承5 但我不能达到这些自定义属性和它的值（StudentNumber和职业），而在达到ApplicationUser（名字，姓氏）定义的自定义属性。和想法？

下面是我试图用检索值的代码名称，姓， StudentNumber 和行业：

控制器：

 公开的AccountController（ApplicationUserManager的UserManager，
 ApplicationSignInManager signInManager） 
 {
的UserManager =的UserManager; 
 SignInManager = signInManager; 
} 
 
私人ApplicationUserManager _userManager; 
公共ApplicationUserManager的UserManager 
 {
得到
 {
返回_userManager？ HttpContext.GetOwinContext（）
 .GetUserManager< ApplicationUserManager>（）; 
} 
私定
 {
 _userManager =价值; 
} 
} 
 
 
 [使用AllowAnonymous] 
公众的ActionResult ListAccount（JQueryDataTableParamModel参数）
 {
 VAR ALLUSERS =的UserManager。用户;不再赘述
 
 
 //代码/ *因为没有财产StudentNumber和职业中的用户，
同时达到其他自定义属性我不能达到这些特性* / 
 VAR的结果=从C在ALLUSERS 
选择新的[] {Convert.ToString（c.Id），c.Name，c.Surname，c.Email，c.PhoneNumber}; 
} 
  

型号：

 公共抽象类ApplicationUser：IdentityUser 
 {
 //剪断
 //公共属性
公共字符串名称{搞定;组; } 
公共字符串姓氏{搞定;组; } 
} 
  

我定义的不同类型的类并从基类继承：

 公共类StudentUser：ApplicationUser 
 {
公共字符串StudentNumber {搞定;组; } 
} 
 
公共类ProfessorUser：ApplicationUser 
 {
公共字符串行业{搞定;组; } 
} 
  

解决方案

在创建列表从基类你只打算要能够从基类访问属性不同类创建变量。

如果你创建一个对象类型的列表，只，然后是你可以访问继承类如的添加的属性为StudentUser，你会

列表< StudentUser>学生，你将能够从这些项目获得的StudentNumbers。

有没有多少，如果你是想抓住一个列表，你可以做从基类来捕获所有用户。你只能得到从该列表中是常见的列表中的所有类的属性。

有关填充有不同类的视图，为类类型一定条件下的测试会做来填充特定于类的属性。

有关如

 如果（用户类型==学生）
室= user.Room; 
  

I use ASP.NET Identity 2.0 and create two different user entities inherited from ApplicationUser as posted on Implementing Inheritance with the Entity Framework 6 in an ASP.NET MVC 5 but I cannot reach these custom properties and its values (StudentNumber and Profession) while reaching custom properties defined in ApplicationUser (Name, Surname). And idea?

Here is the code I tried to use for retrieving value Name, Surname, StudentNumber and Profession:

Controller:

public AccountController(ApplicationUserManager userManager, 
    ApplicationSignInManager signInManager)
{
    UserManager = userManager;
    SignInManager = signInManager;
}

private ApplicationUserManager _userManager;
public ApplicationUserManager UserManager
{
    get
    {
        return _userManager ?? HttpContext.GetOwinContext()
            .GetUserManager<ApplicationUserManager>();
    }
    private set
    {
        _userManager = value;
    }
}


[AllowAnonymous]
public ActionResult ListAccount(JQueryDataTableParamModel param)
{
    var allUsers = UserManager.Users;
    //code omitted for brevity

    /* as there is no property StudentNumber and Profession in Users, 
    I cannot reach these properties while reaching other custom properties */ 
    var result = from c in allUsers 
select new[] { Convert.ToString(c.Id), c.Name, c.Surname, c.Email, c.PhoneNumber };
 }

Models:

public abstract class ApplicationUser : IdentityUser
{
    //snip
    //Common properties
    public string Name { get; set; }
    public string Surname { get; set; }
}

I defined different type classes and inherited from the base class:

public class StudentUser : ApplicationUser
{
    public string StudentNumber { get; set; }
}

public class ProfessorUser : ApplicationUser
{
    public string Profession { get; set; }
}

解决方案

When creating a list of variables created from varying classes from a base class you are only going to be able to access the attributes from the base class.

If you create a list of one object type only, then yes you can access the added attributes of that inherited class e.g. for StudentUser, you will be

List<StudentUser> students, you will be able to access the StudentNumbers from these items.

There's not much you can do if you are wanting to grab a list from the base class to catch all Users. You can only get the attributes from that list that are common to all classes in the list.

For populating a view with varying classes, some condition testing for class type would do to populate the attribute specific to that class.

For e.g.

if(usertype == Student)
    room = user.Room;

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