XAF0033: EF Core business class properties should not be overridden

• Jun 25, 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

C#

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

C#

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