This action has been disabled for security reasons. The control cannot serialize complex primary key field values

• Sep 30, 2023

Error Description

This exception may occur in a grid if the KeyFieldName property is bound to a complex type field.

Explanation

For security reasons, we limit types that can be specified as primary key fields (the KeyFieldName property) in grid controls to the following types:

• Primitive serializable .NET data types (such as Int32, Double, String, Guid).
• Types that implement their own type converter. These types should be marked with the [TypeConverter] attribute and implement the bound converter to/from a text representation through a TypeConverter descendant.

All other complex types that are marked as serializable (have the [Serializable] attribute) are not allowed.

This restriction applies to the following controls:

• Grid View
• Card View
• Vertical Grid
• Grid Lookup Editor

Solution

Map the KeyFieldName property to a data field of the allowed type.