Not sure how to handle a dynamic input not being available

​

Input - {Name: 'bob', Age: '22', Weight: 'Fat"}

​

dynamic decoded_JSON = JsonConvert.DeserializeObject<dynamic>(return_value); string Name = decoded_JSON.Name; string Age = decoded_JSON.Age; string Weight = decoded_JSON.Weight; Console.WriteLine(Name, Age, Weight); 

​

This is fine,

However if I use the input {Name: 'bob', Age: '22'}

I get an exception because Weight doesn't exist. (Error: System.NullReferenceException: Object reference not set to an instance of an object)

​

Is there a way to smartly handle a dynamic variable not being available?

​

Thanks!