How do I check if a property exists on a dynamic anonymous type in c#?

Question

I have an anonymous type object that I receive as a dynamic from a method I would like to check in a property exists on that object.

....
var settings = new          


        

Answer 1

To extend the answer from @Kuroro, if you need to test if the property is empty, below should work.

public static bool PropertyExistsAndIsNotNull(dynamic obj, string name)
{
    if (obj == null) return false;
    if (obj is ExpandoObject)
    {
        if (((IDictionary)obj).ContainsKey(name))
            return ((IDictionary)obj)[name] != null;
        return false;
    }
    if (obj is IDictionary dict1)
    {
        if (dict1.ContainsKey(name))
            return dict1[name] != null;
        return false;
    }
    if (obj is IDictionary dict2)
    {
        if (dict2.ContainsKey(name))
            return (dict2[name].Type != JTokenType.Null && dict2[name].Type != JTokenType.Undefined);
        return false;
    }
    if (obj.GetType().GetProperty(name) != null)
        return obj.GetType().GetProperty(name).GetValue(obj) != null;
    return false;
}