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Asked: 2026-06-13T13:50:41+00:00

I have an extension for IEnumerable collections like this: public static bool IsNullOrEmpty<T>(this IEnumerable<T>

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I have an extension for IEnumerable collections like this:

public static bool IsNullOrEmpty<T>(this IEnumerable<T> enumerable) {
    return enumerable == null || !enumerable.Any(); 
}

It works for a lot of collections except for XmlNodeList.
Why is that? XmlNode implements IEnumerable ??

Please help

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1 Answer

  1. Editorial Team

    It is because XmlNodeList implements IEnumerable, not IEnumerable<T>, you can use below instead:

    public static bool IsNullOrEmpty(this IEnumerable enumerable)
{
    return enumerable == null || !enumerable.Cast<object>().Any();
}
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