Converts the specified value into a field type value.
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Use this method to convert the field type to a complex data type that differs from that of the parent field type. In a custom type-specific class, override this method to convert; for example, a URL field value in URL, or a Description format into an SPFieldUrlValue object. For more information about field value objects, see Custom Field Value Classes.