Question

I am trying to use linq to xml functional construction to create xml from a bunch of objects:

new XAttribute("duration", (m.Media.Type.HasValue && m.Media.Type.Value == MediaType.Image) ? m.DurationInSeconds : default(int?)),

The issue with the code is that if media type does not have a value or media type is not an image, I am getting an exception which probably is because I have used default(int?).

Ideally I would like to replace “null” in the node if media type in not present or media is not image. But could not figure out how.

Any ideas?

Answer 1

Do you want to put the string “null” as the attribute value?

If yes i would use the code below:

    int? typeID = null;
    int duration = 23;
    var xml = new XElement("root", 
        new XAttribute("duration", ((typeID.HasValue && typeID.Value == 1) ? duration.ToString() : null) ?? "null")
    );

This results <root duration="null" /> or <root duration="23" /> if typeID == 1