Cannot generate classes because no top-level elements with complex type where found

Question

I am trying to create a class from a xsd file using the XSD.EXE tool. but for some reason i get this error.

Warning: cannot generate classes because n

Answer 1

You XSD only defines a type (as Sergio also suggested). As such, it cannot be used for validation of XML, unless it is imported by another XSD . Likewise, other tools like xsd.exe will not be able to anything sensible with it.

You can compare this with a C# library having an interface definition, but no implementation of the interface.

You can fix this in a variety of ways. Considering your current code, I would suggest something along those lines:

Though you may consider renaming the type name, to prevent confusion to readers. A common pattern is to suffix typenames with Type, in your case, DocumentIdentificationType.

The code above is importable with xsd.exe without any problems.