Include an ampersand in an XML attribute

dom, html-entities, powershell, xml, xml-attribute

Solution

The solution

$elem = $xml.CreateElement("Site");

$elemAttr = $xml.CreateAttribute("Title");
$elemAttr.InnerXml = "Stack "Stacky" Overflow";

$elem.SetAttributeNode($elemAttr);

XML output:

<Site Title="Stack &quot;Stacky&quot; Overflow" />

Problem

The problem We want to assign an attribute whose contents already contain entities like `&quot;` or `&amp;`. In this example, we want the title attribute to be `Stack "Stacky" Overflow`: ``` $elem = $xml.CreateElement("Site"); $elem.SetAttribute("Title", "Stack &quot;Stacky&quot; Overflow"); ``` But that turns into the following piece of XML output: ``` <Site Title="Stack &amp;quot;Stacky&amp;quot; Overflow" /> ``` That behaviour is even stated in the documentation about the XmlElement.SetAttribute Method: In order to assign an attribute value that contains entity references, the user must create an XmlAttribute node plus any XmlText and XmlEntityReference nodes, build the appropriate subtree and use SetAttributeNode to assign it as the value of an attribute.

Original source