How can i get and use AspnetUsers UserId in migration configuration file? - entity-framework

Question

This is the code of configuration file(seed method) of entity framework migration.
Through this code, i create a user and role for AspnetUsers table and i put the user in role named Admin.
AppUserManager userMgr = new AppUserManager(new UserStore<AppUser>(context));
AppRoleManager roleMgr = new AppRoleManager(new RoleStore<AppRole>(context));
string roleName = "Admin";
string userName = "admin#educationboard.com";
string password = "Sifre";
string email = "admin#educationboard.com";
if (!roleMgr.RoleExists(roleName))
{
roleMgr.Create(new AppRole(roleName));
}
AppUser user = userMgr.FindByName(userName);
if (user == null)
{
userMgr.Create(new AppUser { UserName = userName, Email = email },
password);
user = userMgr.FindByName(userName);
}
if (!userMgr.IsInRole(user.Id, roleName))
{
userMgr.AddToRole(user.Id, roleName);
}
foreach (AppUser dbUser in userMgr.Users)
{
dbUser.Cinsiyet = eCinsiyetler.Erkek;
}
context.SaveChanges();
Then i also create an entity named Articles, each article has an author id. I named AuthorId as UserId in Article entity. How can i get and use UserId I've just created above in following code?
var articles= new List<Article>
{
new Article{Title="Title 1", AddedDate=DateTime.Now, Content="content here.", UserId=.(What code should be here? };
articles.ForEach(p => context.Articles.AddOrUpdate(s => s.Title, p));
context.SaveChanges();

Answer 1

Why can't you query for the user like you did above?
AppUser user = userMgr.FindByName(userName);
if (user == null)
{
userMgr.Create(new AppUser { UserName = userName, Email = email },
password);
user = userMgr.FindByName(userName);
}
and then have user.Id?
If you have a handle in ApplicationDbContext you could easily do something like
ApplicationDbContext db = new ApplicationDbContext();
var user = db.AspNetUser.Single(x => x.UserName == username);
var id = user.Id;