Menu
I am trying to set the innerxml of a xmldoc but get the exception: Reference to undeclared entity
XmlDocument xmldoc = new XmlDocument();
string text = "Hello, I am text α – —"
xmldoc.InnerXml = "<p>" + text + "</p>";
This throws the exception:
Reference to undeclared entity 'alpha'. Line 2, position 2..
How would I go about solving this problem?
971
XML, unlike HTML does not define entities (ie named references to UNICODE characters) so α — etc. are not translated to their corresponding character. You must use the numerical value instead. You can only use < and & in XML
If you want to create HTML, use an HtmlDocument instead.
100
In .Net, you can use the System.Xml.XmlConvert class:
string text = XmlConvert.EncodeName("Hello α"); Alternatively, you can declare the entities locally by putting the declarations between square brackets in a DOCTYPE declaration. Add the following header to your xml:
<!DOCTYPE documentElement[ <!ENTITY Alpha "Α"> <!ENTITY ndash "–"> <!ENTITY mdash "—"> ]> Do a google on "html character entities" for the entity definitions.
45
Try replacing &Alpha with
Α
The preceding answer is right. Another alternative is to link your html document to the DTD where those character entities are defined, and that is standard XHTML DTD definition. Your xml file should include the following declaration:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
