DBContext simplest way to update foreign key - entity-framework

Question

var orgAcc = db_.Accounts.Find(account.Id);
db_.Entry(orgAcc).CurrentValues.SetValues(account);
orgAcc.Company = db_.Companys.Find(account.Company.Id);
db_.SaveChanges();
Is this the simplest way to update an entity's association ?
public class ChartofAccount: MasterData
{
[Key]
public int Id { get; set; }
[Required]
[StringLength(6)]
public string Code { get; set; }
public virtual Company Company { get; set; }
[Required]
public string AccountName { get; set; }
[Required]
[StringLength(3)]
public string AccountCurrency { get; set; }
public virtual AccountCatagory Category1 { get; set; }
public virtual AccountCatagory Category2 { get; set; }
public string Reference { get; set; }
public bool HasTransaction { get; set; }
}

Answer 1

The way SetValues works is to do a property-by-property compare, and for each property from the left-hand object that is also in the argument, that has a matching type, it will update the left-hand object with the value from the argument.
I presume account.Company is a different type of object to orgAcc.Company, such as something that has come in from an MVC controller argument (ie account and it's referenced objects are not EF entities). In this case your approach seems a sound way of doing it.
That being said, orgAcc probably has a Company property, and a CompanyId property, in order to support the EF relationships, so, if your account object followed the same pattern, ie storing a CompanyId field directly, rather than having to navigate through the company, then SetValues could automatically update the CompanyId field, which should update the foreign key when you save changes. This way you could also avoid the step that specifically assigns the orgAcc.Company field.