Error when trying to write an attribute string using XmlWriter
I am trying to write an attribute string like so:
The element should look like this:
However, I get the following error:
"The prefix '' cannot be redefined from '' to 'http://www.opengis.net/kml/2.2' within the same start element tag."
I'm confused why this is happening, because I do the same exact thing with other elements down the line without issue.
string kmlUrl = "http://www.opengis.net/kml/2.2";
using (XmlWriter writer = XmlWriter.Create(filePath, settings))
{
await writer.WriteStartDocumentAsync();
writer.WriteStartElement("kml");
writer.WriteAttributeString("xmlns", $"{kmlUrl}"); // error here
// rest of stuff
}The element should look like this:
<kml xmlns="http://www.opengis.net/kml/2.2">However, I get the following error:
"The prefix '' cannot be redefined from '' to 'http://www.opengis.net/kml/2.2' within the same start element tag."
I'm confused why this is happening, because I do the same exact thing with other elements down the line without issue.
