Fetch ISBN XML from isbndb.com and Parse

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Demonstrates sending a query to isbndb.com and parsing the XML response.

Chilkat.Xml xml0 = new Chilkat.Xml();

//  The Chilkat XML component/class is freeware.

Chilkat.Xml xml = null;
xml = xml0.HttpGet("http://isbndb.com/api/books.xml?access_key=XXXXX&results=details&index1=isbn&value1=0443074348");
if (xml == null ) {
    MessageBox.Show(xml0.LastErrorText);
    return;
}

//  The XML returned for this URL is the following:

//  <?xml version="1.0" encoding="UTF-8" ?>

//  <ISBNdb server_time="2007-10-25T14:07:25Z">
//      <BookList total_results="1" page_size="10" page_number="1" shown_results="1">
//          <BookData book_id="diagnostic_histopathology_of_tumors_2_volume_set_with_cd_rom" isbn="0443074348">
//              <Title>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs</Title>
//              <TitleLong>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs (Diagnostic Histopathology of Tumors (Fletcher))</TitleLong>
//              <AuthorsText>Christopher D. M. Fletcher (Editor)</AuthorsText>
//              <PublisherText publisher_id="churchill_livingstone">Churchill Livingstone</PublisherText>
//              <Details dewey_decimal="616" physical_description_text="2166 pages" language="" edition_info="Hardcover; 2007-03-13" dewey_decimal_normalized="616" lcc_number="" change_time="2006-12-13T14:53:42Z" price_time="2007-10-25T01:12:13Z" />
//          </BookData>
//      </BookList>
//  </ISBNdb>

//  First, navigate to the BookData node:
xml.FirstChild2();
xml.FirstChild2();

//  Show the Title and AuthorsText:
textBox1.Text += xml.GetChildContent("Title") + "\r\n";
textBox1.Refresh();
textBox1.Text += xml.GetChildContent("AuthorsText") + "\r\n";
textBox1.Refresh();

//  Show the publisher_id attribute of the PublisherText node:
Chilkat.Xml xml2 = null;
xml2 = xml.FindChild("PublisherText");
textBox1.Text += xml2.GetAttrValue("publisher_id") + "\r\n";
textBox1.Refresh();

//  Save the XML to a file:
xml.SaveXml("book.xml");