Output

After you build and run the project, the application should produce the following output in a console window:

Validating DOM...
        XMLDoc is not valid because
Element content is invalid according to the DTD/Schema.
Expecting: pub_date.

Validating all //book nodes, one by one ...
        <book> (0) is a valid node
        <book> (1) is not valid because
Element content is invalid according to the DTD/Schema.
Expecting: pub_date.

Validating all children of all book nodes, //book/*, one by one ...
        <author> (0) is a valid node
        <title> (1) is a valid node
        <genre> (2) is a valid node
        <price> (3) is a valid node
        <pub_date> (4) is a valid node
        <review> (5) is a valid node
        <author> (6) is a valid node
        <title> (7) is a valid node
        <genre> (8) is a valid node
        <price> (9) is a valid node
        <review> (10) is a valid node

The next topic demonstrates how to make XML requests over HTTP.