Updating the existing row in a table with session data

Hello All,

I have an entire class object stored in my session. I want to update an existing row in a table with the session data. I am trying to find out if their any better way. In below code, I am trying to get  the data from Session["MailingInfo"] and trying to update the data in the existing table. I tried to do this:

IDData = MI

That didn't work so I tried this way and it worked. I was wondering if their is any simple way to achieve this or do I need to  assign each property individually like so:  IdData.FirstName = MI.FirstName and so on.

   MailingInfo MI = (MailingInfo)HttpContext.Current.Session["MailingInfo"];
            using (IdentityProofContext dbContext = new IdentityProofContext())
            {
                MailingInfo IdData = dbContext.MailingInfo.Where(r => r.MailId == mId).FirstOrDefault();
                if (IdData != null)
                {
                    IdData.Compeletd = "Y";
                    IdData.FirstName = MI.FirstName;
                    IdData.MiddleName= MI.MiddleName;
                    IdData.LastName = MI.LastName;
                    IdData.StreetAddress = MI.StreetAddress;
                    IdData.City = MI.City;
                    IdData.State = MI.State;
                    IdData.Zip = MI.Zip;
                    IdData.PhoneNumber = MI.PhoneNumber;

                    dbContext.SaveChanges();

any help will be highly appreciated.