SelectSingleNode is returning null

Ok. I need help with more thing.

Basically the volume file that you reviewed, I am loading into an xml document and then replacing the innertext of the node and then resaving file as a kml.

If I want to add more polygons along with coordinates in the file dynamically how would I do that with the same structure dynamically.

This is what I am doing below for with a the preexisting volume.kml

//kmlDoc.Load(@"C:\temp\KML\volume2.kml");


var xmlNode = kmlDoc.SelectSingleNode("kml/Document/Placemark/MultiGeometry/Polygon/outerBoundaryIs/LinearRing/coordinates");
if (xmlNode != null)
{
xmlNode.InnerText = KmlObjectString.ToString();
string[] nameArray = browseFile.SafeFileName.Split('.');
kmlDoc.Save(@"C:\temp\KML\" + nameArray[0] + ".kml");
}

Hi,

Happy to see it's working. Talking about the issue, I am also working with kml file for the first time. So not an expert to talk about the issue. Just found out below 2 links and tried my luck-

https://msdn.microsoft.com/en-us/library/d271ytdx.aspx

http://stackoverflow.com/questions/4171451/xmldocument-selectsinglenode-and-xmlnamespace-issue

As per my understanding, xmlns is the dafault namespace of xml files. Hence if we use it in our file, we may need to use a XmlNamespaceManager as specified in the second link.

The second option is to remove the default namespace. So i tried the second one, which was comparatively easier :)