XAF0033: EF Core business class properties should not be overridden

Aug 27, 2025
2 minutes to read

Severity: Warning

XAF and EF Core do not support the following business object’s properties:

Declared with the new keyword
Overridden properties
Abstract properties

For more information about these requirements, see the following article: Can I override properties of business objects?.

This diagnostic works only for EF Core classes derived from the DevExpress.Persistent.BaseImpl.EF.BaseObject class. This diagnostic does not check static properties.

Examples

Invalid Code

csharp

using DevExpress.Persistent.Base;
using DevExpress.Persistent.BaseImpl.EF;

namespace MySolution.Module.BusinessObjects {
    public class TestClass : BaseObject {
        private int testProperty1; 
        // The property must not override a property from a base class
        public override int TestProperty1 { // Warning: XAF0033
            get { return testProperty1 + 1; }
            set { SetPropertyValue(nameof(TestProperty1), ref testProperty1, value); }
        }

        private int testProperty2; 
        // The property must not be declared with the `new` keyword
        public new int TestProperty2 { // Warning: XAF0033
            get { return testProperty2 + 1; }
            set { SetPropertyValue(nameof(TestProperty2), ref testProperty2, value); }
        }
    }
}

Valid Code

csharp

using DevExpress.Persistent.Base;
using DevExpress.Persistent.BaseImpl.EF;

namespace MySolution.Module.BusinessObjects {
    public class TestClass : BaseObject {

        private int testProperty;
        // The property that meets the requirements
        public int TestProperty { 
            get { return testProperty; }
            set { SetPropertyValue(nameof(TestProperty), ref testProperty, value); }
        }
    }
}

How to Fix

Check the business object’s property declaration and ensure the property is declared without the following modifiers:

abstract
override
new