public static bool UpdateDriver(Driver _newdriver)
{
myDALDataContext DB = new myDALDataContext();
Driver oldDriver = (from driver in DB.Drivers
where _newdriver.DriverID == driver.DriverID
select driver).Single();
oldDriver.DrivingLicenseNumber = _newdriver.DrivingLicenseNumber;
oldDriver.DrivingLicenseTypID = _newdriver.DrivingLicenseTypID;
oldDriver.IdentityExpireDate = _newdriver.IdentityExpireDate;
oldDriver.IdentityNumber = _newdriver.IdentityNumber;
oldDriver.IdentityTypeID = _newdriver.IdentityTypeID;
oldDriver.JobID = _newdriver.JobID;
oldDriver.MobileNumber = _newdriver.MobileNumber;
oldDriver.Name = _newdriver.Name;

oldDriver.Data.Linq.ChangeSet change = DB.GetChangeSet();
DB.SubmitChanges();
return (change.Updates.Count >= 1);
}