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Taking the first steps with .NET XDocument objects, you might encounter everything you try to select from the XML will be NULL.
In this case you have to take a look at the namespaces.
Methods like Descendants() seem to always need the exact namespace written before e.g. the XML tag you are searching for.
Example: Reading and modifying an SVG image
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var svg = XDocument.Parse(myImageSvgXmlText); var ns = svg.Root.GetDefaultNamespace(); //search for a special tag called "<g>" var frame = svg.Root.Descendants(ns + "g").Where(o => (string)o.Attribute("id") == "myFrame_Color").First(); //search for "<polygon>" tag var pol = frame.Descendants(ns + "polygon").First(); pol.Attribute("style").Value += "; fill:" + myHexCode; |
Advanced: Get and edit the attributes of an “<xlink-href> attribute” (referring to an internal or external binary/rasterized image)
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XNamespace xLinkNS = "http://www.w3.org/1999/xlink"; imgTag.Attribute(xLinkNS + "href").Value = "data:image/png;base64," + myBase64png; |
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