|InfoPath Developer Reference|
Version Added: InfoPath 2003
expression An expression that returns a DataDOMEvent object.
After you have set a reference to the XML DOM node that the Site property returns, you can use any of the properties and methods that are supported by the XML DOM.
|To learn more about the XML DOM and all of the properties and methods that it supports, see the MSXML 5.0 SDK documentation in the Microsoft Script Editor (MSE) Help system.|
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In the following example, the Site property of the DataDOMEvent object is used to check the value of the XML DOM node; if it matches certain criteria, an error is created: