Microsoft KB Archive/304265

= How To Use the contains XPath Function When You Are Programming the MSXML DOM =

Article ID: 304265

Article Last Modified on 7/13/2004

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APPLIES TO


 * Microsoft XML Core Services 4.0
 * Microsoft XML Parser 3.0 Service Pack 1

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This article was previously published under Q304265



SUMMARY
When you use the Microsoft XML (MSXML) Document Object Model (DOM) in code to load and parse an XML document, it is common programming practice to identify elements and/or elements with attributes whose data contains a specified string value or word. This article documents a code sample that demonstrates how you can use the contains XML Path Language (XPath) string function to implement this requirement.



Step-by-Step Example
  In Notepad, create a new XML document named Books.xml, and paste the following XML: 

 Beginning XML Wrox Professional XML Wrox Programming ADO</Title> <first-name>Mary</first-name> <last-name>Bob</last-name> <datePublished>1/1/2000</datePublished> Microsoft Press</Publisher> </li> <li>Save Books.xml in the root folder of drive C.</li> <li>Open a new Standard EXE project in Microsoft Visual Basic. Form1 is created by default.</li> <li>From the Project menu, click References, and then select the Microsoft XML 3.0 check box.</li> <li>Drag a Command button, and drop it onto Form1.</li> <li> Copy and paste the following code in the Click event procedure of the Command button: Dim doc As MSXML2.DOMDocument Dim nlist As MSXML2.IXMLDOMNodeList Dim node As MSXML2.IXMLDOMNode

Set doc = New MSXML2.DOMDocument doc.setProperty &quot;SelectionLanguage&quot;, &quot;XPath&quot; doc.Load &quot;c:\books.xml&quot; Set nlist = doc.selectNodes(&quot;//book/Title[contains(.,'ADO')]&quot;) MsgBox &quot;Matching Nodes : &quot; & nlist.length

For Each node In nlist Debug.Print node.nodeName & &quot; : &quot; & node.Text Next </li> <li>The preceding code loads the XML from Books.xml into an instance of the MSXML DOMDocument object. It then runs an XPath query that uses the contains XPath function to identify all Book titles that contain the word ADO. Finally, the For loop iterates through the selected nodes and displays the matching titles that were identified by running the XPath query.</li> <li>The first parameter of the contains XPath function is used to specify the source node or string against which the comparison is to be executed. The second parameter is a string that specifies the word or string value to look for in the source node. It is important to remember that the string or word that is supplied as the second parameter of the contains function is case sensitive.</li></ol>

Keywords: kbhowto KB304265

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