ArcGIS Pro 2.6 API Reference Guide
Domain Class
Members 

ArcGIS.Core.Data Namespace : Domain Class
Represents a domain from a geodatabase.
Syntax
public abstract class Domain : ArcGIS.Core.CoreObjectsBase, System.IDisposable  
Public MustInherit Class Domain 
   Inherits ArcGIS.Core.CoreObjectsBase
   Implements System.IDisposable 
Remarks
A domain maintains the information about a specific domain in the geodatabase, including its name, description and the FieldType it can be assigned to.
Inheritance Hierarchy

System.Object
   ArcGIS.Core.CoreObjectsBase
      ArcGIS.Core.Data.Domain
         ArcGIS.Core.Data.CodedValueDomain
         ArcGIS.Core.Data.RangeDomain

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

Domain Members
ArcGIS.Core.Data Namespace