How to create transaction with asp.net identity?

Question

I am doing registration on which i am asking for 5 things:

FullName,EmailId,Password,ContactNumber,Gender

Now emailid and password i am stor

Answer 1

You should not create a new db context, but use the existing one.

var context = Request.GetOwinContext().Get()

It is created per request if you use default implementation.

app.CreatePerOwinContext(ApplicationDbContext.Create);

Update:

OK, since you are using two different contexts your code will look something like this:

public async Task Register(RegisterViewModel model)
{
    if (ModelState.IsValid)
    {
        var user = new ApplicationUser { UserName = model.Email, Email = model.Email };

        var appDbContext = HttpContext.GetOwinContext().Get();
        using( var context = new MyEntities())
        using (var transaction = appDbContext.Database.BeginTransaction())
        {
            try
            {
                var DataModel = new UserMaster();
                DataModel.Gender = model.Gender.ToString();
                DataModel.Name = string.Empty;

                // Doing entry in AspnetUser even if transaction fails
                var result = await UserManager.CreateAsync(user, model.Password);
                if (result.Succeeded)
                {
                    await this.UserManager.AddToRoleAsync(user.Id, model.Role.ToString());
                    this.AddUser(DataModel, context);
                    transaction.Commit();
                    return View("DisplayEmail");
                }
                AddErrors(result);
            }
            catch (Exception ex)
            {
                transaction.Rollback();
                return null;
            }
        }
    }

    // If we got this far, something failed, redisplay form
    return View(model);
}

public int AddUser(UserMaster _addUser, MyEntities _context)
{
    _context.UserMaster.Add(_addUser);
    _context.SaveChanges();
    return 0;
}

Here, appDbContext is the same context that is used by UserManager.