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Can an XML attribute be the empty string?
In other words, is
<element att="" />
valid XML?
638
Empty XML Elements An element with no content is said to be empty. The two forms produce identical results in XML software (Readers, Parsers, Browsers). Empty elements can have attributes.
It's not valid xml, but it can be inserted into an XML column in SQL Server 2005.
Ensure that the tag (e.g. %%middlename%%) contains the value null. In your message action (e.g. Publish) right click the "text (String) {XML}" node and select "Properties". Set the check box "Send NULL values". Your message action should now send an XML nil as the node value.
In an XML document, the usual way to represent a null value is to leave the element or attribute empty. Some business messages use a special value to represent a null value: <price>-999</price> . This style of null representation is supported by the DFDL and MRM parsers.
Yes, this is well-formed XML.
An easy way to test this (on Windows) is to save the sample in a test.xml file and open it with Internet Explorer. IE will display an error message if the document is not well-formed.
106
You can create an empty attribute via attname=""
You can create an empty element via
<elementName></elementName>
or
<elementName/>
It is worth nothing that this is an XML attribute, not an element. An empty element would be:
</>
which is not valid XML.
35
this is valid xml tag:
<mytag myattrib=""/>
this is not:
<mytag myattrib/>
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