SPField custom attributes in schema

Question

I'm trying to decide whether it is possible to store custom attributes in a SPField's schema XML.

If you look at the .xsd for the 'Field' element in SharePoint, there are a slew of attributes. The last one in the attribute list is <xs:anyAttribute>. This elements purpose is to allow it be extended. This obviously leads me to believe it is possible to store custom attributes. However, I cannot find any documentation on this.

Anyone have any experience with this, or seen documentation saying yay or nay on the subject?

Answer 1

You are right you can have custom Attributes to the SPField,

<?xml version="1.0" encoding="utf-8" ?>
<FieldTypes>
    <FieldType>
        <Field Name="Property1">ConfigurableURL</Field
        <Field Name="Property2">Value2</Field 
   <PropertySchema>
     <Fields>
      <Field Name="CustomAttributeOne" DisplayName="CustomAttributeOneDisplay" Type="Text">
      </Field>
     </Fields>
   </PropertySchema>
</FieldType>
</FieldTypes>

You can find more information about the subject at the below links

Link1

Link2

Link3