ArcGIS Pro 2.6 API Reference Guide
Domain Class
Members 

ArcGIS.Desktop.Editing.Attributes Namespace : Domain Class
Represents an abstract base class for a Domain. There are two subclasses RangeDomain and CodedValueDomain.
Syntax
public abstract class Domain 
Public MustInherit Class Domain 
Remarks

Attribute domains are rules that describe the legal values of a field type, providing a method for enforcing data integrity. Attribute domains are used to constrain the values allowed in any particular attribute for a table or feature class.

Inheritance Hierarchy

System.Object
   ArcGIS.Desktop.Editing.Attributes.Domain
      ArcGIS.Desktop.Editing.Attributes.CodedValueDomain
      ArcGIS.Desktop.Editing.Attributes.RangeDomain

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

Domain Members
ArcGIS.Desktop.Editing.Attributes Namespace