Expandoobject check if property exists if i get the type means, i need as nullable double. but actually its nullable double, because i have used expandoobject and not store the value to colvalues in some condition. For example, if calling code specifies dynamicFile. For ExpandoObject, you can simply check whether the property is defined as a key in the underlying dictionary. Oct 18, 2013 · In JavaScript, checking if an object implements a property is easy; so why can't it be that easy to check dynamics in C#? Well, it sort of is!* If you are using an ExpandoObject, you need only cast it to a Dictionary and check and see if it contains the desired key. Instead of that you call a nuclear bomb - causes and the handle exception. ExpandoObject(); ex. Differences between ExpandoObject, DynamicObject and dynamic check to see if a property exists within Jun 4, 2021 · JSON. Age = 25; In the above example, we added the Name and Age properties to the ExpandoObject dynamically. children. gxrtfo tlvbj dgbssfa rjhh sliwaip sunjof brcvq zjcdd exc oodwjotc