Sample Code for Autonumbering in Dynamics 365 July 2017 Update – Nishant Rana’s Weblog

As a first step, add references to the latest version 9 assemblies

https://www.nuget.org/packages/Microsoft.CrmSdk.CoreAssemblies/

In the below sample code, we are creating an Auto number attribute in Contact Entity.

This is how the fields shows up inside contact form.

Using UpdateAttribute Request we can update the format for the AutoNumber field.

And also, we can have multiple auto number fields for an entity as shown below.

Sample Code

CreateAttributeRequest createAttributeRequest...