Hello all,
I'm just starting to learn about Services in D365 F&O. I want to ask whether this link in Microsoft Docs still valid? Walkthrough: Exposing an X Class as a Data Contract | Microsoft Docs
Cause it is said the content is archived, and I also try to look in other resources and books, there is some basic differences for example in that link with the sample of create Data Contract Class :
[DataContractAttribute]
public class EmployeeTest
{
str employeeName;
int employeeAge;
utcdatetime employeeBirthDate;
}
The 1st tag [DataContractAttributes, I cannot type it with Intellisense, it only shows me the possibilities without word "..Attributes"

Same goes when I type for [DataMemberAttribute which in that document given as an example, also in this case in some other resources/books, now when I type it only give me "DataMember". Has the development already been changed?
Please help to guide me whether there is a good reference with a good explanation how to learn this, with of course the latest version.
Thanks,