Specifies an XML string that contains extensibility settings for Visual FoxPro at the class level. For example, you can specify a custom property editor, display a property on the Favorites tab, or change the capitalization. Read/write at design time only.
You can annotate the MemberData XML with customization details. The customization you add to _MemberData is at the class and global levels. The class level always overrides the global level. At the class level, support is handled by the _MemberData property. The property contains an XML string with the actual member metadata. As a property, it is inherited and overridden by subclasses.