the example from documentation version 2.6

CustomerEntity customer = new CustomerEntity();
customer.CustomerID="CHOPS";
customer.IsNew=false;
customer.Phone = "(605)555-4321";
customer.Save();

my code :

SalutationEntity salu = new SalutationEntity();
            salu.SalutationId = 40;
            salu.IsNew = false;
            salu.Name = "hello";
            salu.MappingName = "haha";
            
            //doesn't update Sex filed
            //salu.Sex = "0";

            salu.Save();

but i got an error : The property "SalutationId " is read only.

Note: SalutationId is Primary Key filed.

thank you

Is it an Identity field/ auto-geneated t the database side?

Walaa wrote:

Is it an Identity field/ auto-geneated t the database side?

Yes

That's why it's read-Only. Why do you want to set it? If it's gonna be set at the database side.

(EDIT) If you want to update an existing entity, please do the following.

            SalutationEntity salu = new SalutationEntity(40);
            salu.IsNew = false;
            salu.Name = "hello";
            salu.MappingName = "haha";
            salu.Save();

actually ,i dont know i just do practice with example in documentation

then i found the problem ,and asked at here.

Thank you for your explaination.