Model view controller Can'；找不到用户表MVC Web API

成功注册后，找不到aspnet用户表，并且当我尝试登录时，它返回无效的授权类型

    public IdentityResult Register(string username, string password)
    {
        var userStore = new UserStore<IdentityUser>();
        var manager = new UserManager<IdentityUser>(userStore);
        var user = new IdentityUser() { UserName = username, Email = username };
        manager.PasswordValidator = new PasswordValidator
        {
            RequiredLength = 3
        };
        IdentityResult result = manager.Create(user, password);

        return result;

    }

    public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
    {
        var userStore = new UserStore<IdentityUser>(new ApplicationDbContext());
        var manager = new UserManager<IdentityUser>(userStore);
        var user = await manager.FindAsync(context.UserName, context.Password);

        if(user !=null)
        {
            var identity = new ClaimsIdentity(context.Options.AuthenticationType);
            identity.AddClaim(new Claim("Username", user.UserName));
            identity.AddClaim(new Claim("Email", user.Email));
            identity.AddClaim(new Claim("LoggedOn", DateTime.Now.ToString()));

            context.Validated();
        }
        else
        {
            return;
        }
    }


public class ApplicationDbContext : IdentityDbContext
{
    public ApplicationDbContext()
        : base("MyEntities")
    {
    }
    public DbSet<userlogindetails> userlogindetails{ get; set; }
}

public IdentityResult寄存器（字符串用户名、字符串密码）
{
var userStore=new userStore（）；
var-manager=新的UserManager（userStore）；
var user=new IdentityUser（）{UserName=UserName，Email=UserName}；
manager.PasswordValidator=新密码验证器
{
所需长度=3
};
IdentityResult result=manager.Create（用户、密码）；
返回结果；
}

当我尝试登录时，它返回无效的授权类型

    public IdentityResult Register(string username, string password)
    {
        var userStore = new UserStore<IdentityUser>();
        var manager = new UserManager<IdentityUser>(userStore);
        var user = new IdentityUser() { UserName = username, Email = username };
        manager.PasswordValidator = new PasswordValidator
        {
            RequiredLength = 3
        };
        IdentityResult result = manager.Create(user, password);

        return result;

    }

    public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
    {
        var userStore = new UserStore<IdentityUser>(new ApplicationDbContext());
        var manager = new UserManager<IdentityUser>(userStore);
        var user = await manager.FindAsync(context.UserName, context.Password);

        if(user !=null)
        {
            var identity = new ClaimsIdentity(context.Options.AuthenticationType);
            identity.AddClaim(new Claim("Username", user.UserName));
            identity.AddClaim(new Claim("Email", user.Email));
            identity.AddClaim(new Claim("LoggedOn", DateTime.Now.ToString()));

            context.Validated();
        }
        else
        {
            return;
        }
    }


public class ApplicationDbContext : IdentityDbContext
{
    public ApplicationDbContext()
        : base("MyEntities")
    {
    }
    public DbSet<userlogindetails> userlogindetails{ get; set; }
}

public override异步任务GrantResourceOwnerCredentials（OAuthGrantResourceOwnerCredentialsContext）
{
var userStore=newuserstore（new ApplicationDbContext（））；
var-manager=新的UserManager（userStore）；
var user=wait manager.FindAsync（context.UserName，context.Password）；
如果（用户！=null）
{
var identity=newclaimsidentity（context.Options.AuthenticationType）；
identity.AddClaim（新声明（“用户名”，user.Username））；
identity.AddClaim（新声明（“电子邮件”，user.Email））；
AddClaim（新声明（“LoggedOn”，DateTime.Now.ToString（））；
context.Validated（）；
}
其他的
{
返回；
}
}
公共类ApplicationDbContext:IdentityDbContext
{
公共应用程序上下文（）
：base（“MyEntities”）
{
}
公共数据库集userlogindetails{get；set；}
}

网络配置

<add name="MyEntities" connectionString="metadata=res://*/Models.MyModel.csdl|res://*/Models.MyModel.ssdl|res://*/Models.MyModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=MY-PC\SQLEXPRESS;initial catalog=MyDB;user id=user;password=pass;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />

---

事实证明，我需要添加默认连接字符串

<add name="DefaultConnection" connectionString="Data Source=My-PC\SQLEXPRESS;Initial Catalog=MyDB;User ID=username;Password=pass" providerName="System.Data.SqlClient" />