public void AddCompany(Company c)
 {
     c.id = ++_companyMaxId;
     _companies.Add(c);
 }
 public void DeleteCompany(Company c)
 {
     _companies.Remove(c);
 }
 public void AddCompany(Company c)
 {
     _conferenceware.Companies.InsertOnSubmit(c);
 }
 public void DeleteCompany(Company c)
 {
     _conferenceware.Companies.DeleteOnSubmit(c);
 }
 partial void DeleteCompany(Company instance);
 partial void UpdateCompany(Company instance);
 partial void InsertCompany(Company instance);