The title has probably never been filled in, so it might be null instead of having no lengths, try this:

@if (node.title != null && node.title.Length != 0) {
        node.title;
} else { 
        node.nodeName;
}

Hmmm ... I've tried that but without any luck.
I also changed node.nodeName to node.Name

Still getting the same error 

Hi Sebastia(a)n :-)

I believe I read somewhere that you need to use aelement around standalone expressions like those (where you're not wrapping them in a or similar)

So:

@if (node.title.Length != 0) {
        <text>node.title</text>
} else { 
        <text>node.nodeName</text>
}

/Chriztian

Ooh d'oh! of course, I didn't think of that. You could try that or just @node.Title and @node.Name (by the way, no need to type nodeName, just Name is fine).

FYI: it depends if there's html before and after the @if. The context switching is a bit hard to figure out at first. :-)

If "node" is of type DynamicNode, e.g.:

var node = Model.NodeById(1234);

Than next script should work

@if (!node.IsNull("title") && node.HasValue("title")) {
 @node.Title;
} else { 
 @node.Name;
}

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