dataadapter update method not working - sql

Question

I have a DataSet which I'm trying to use to update an sql db.
When I call the update method of the dataset's data adapter method. The backend db does not get updated.
To further test the problem I created a variable called rowsAffected which is:
int rowsAffected = private_EnrolleeTableAdapter1.Update(enrollee);
The variable returns 1 when I run the code but the databse is not updated.
Any ideas as to what I might be doing wrong?
Code is included below:
//Create new employee record(row) on Private_Enrollee table in database
HMODataSet.Private_EnrolleeRow enrollee = HMODataSet.Private_Enrollee.NewPrivate_EnrolleeRow();
enrollee.Title = title;
enrollee.Firstname = firstname;
enrollee.Othername = middlename;
enrollee.Surname = surname;
enrollee.Sex = sex;
enrollee.Date_of_Birth = dateofbirth;
enrollee.Office_Tel = officetel;
enrollee.Residential_Tel = restel;
enrollee.Mobile_Tel = mobtel;
enrollee.Email_Address = email;
enrollee.Marital_Status = maritalstatus;
enrollee.Occupation = occupation;
enrollee.NextOfKin_Name = nextofkin;
enrollee.Relationship = relationship;
enrollee.Next_of_Kin_Address = address;
enrollee.Next_of_Kin_Telephone_No = nextofkintelno;
enrollee.Address = address;
enrollee.Town = town;
enrollee.City = city;
enrollee.State = state;
enrollee.Country = country;
enrollee.Hospital = healthcareprovider;
enrollee.Proposed_Plan_Type = proposedinsuranceplan;
enrollee.Blood_Group = bloodgroup;
enrollee.Genotype = genotype;
enrollee.Pre_Informed_Illness = preinformedillness;
enrollee.Existing_Chronic_Illness = chronicdisease;
enrollee.Enrollee_Type = enrolleetypeid;
enrollee.Enrollee_Type_ID = enrolleetypeid;
enrollee.Occupation = occupation;
enrollee.Designation = designation;
enrollee.Employer = employer;
HMODataSet.Private_Enrollee.AddPrivate_EnrolleeRow(enrollee);
int rowsAffected = private_EnrolleeTableAdapter1.Update(enrollee);
HMODataSet.AcceptChanges();