How do I detect an ExpandoObject vs a Dynamic Object?

How to I determine if a Type is an ExpandoObject vs a Dynamic object?

This is returning true for both:

public static bool IsDynamicObject(Type type)
{
return typeof(IDynamicMetaObjectProvider).IsAssignableFrom(type);
}


Example Code for Dynamic Object:

public class Entity
{
public Guid Id { get; set; }
public String Name { get; set; }
}

Delta<Entity> x = new Delta<Entity>();
dynamic dynamicX = x;
dynamicX.Name = nameof(Entity);
dynamicX.Id = typeof(Entity).GUID;


Example Code for Expando Object:

dynamic childX = new ExpandoObject();
childX.A = 1;


dynamic a = 5;

int

a = "hello";

string

ExpandoObject

DynamicObject

IDynamicMetaObjectProvider

1 Answer
1

The ExpandoObject can be casted to a dictionary to get the member names and values

public static bool IsExpandoObject(object objectValue)
{
if (objectValue == null)
return false;

if (IsDynamicObject(objectValue.GetType()))
{
IDictionary<string, object> expandoPropertyValues = objectValue as IDictionary<string, object>;
return expandoPropertyValues != null;
}

return false;
}

public static bool IsDynamicObject(Type type)
{
return typeof(IDynamicMetaObjectProvider).IsAssignableFrom(type);
}


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