Is a TypeDescriptor or RouteValueDictionary type available in a portable class library?

Question

I'm looking for a way to pass an argument, the value of which - the dictionary built from the object: MyMethod(new { param1="public", param2=123 }).

Using RouteValueDictionary, we can easily convert an object to an IDictionary. But RouteValueDictionary requires a TypeDescriptor that is not available in PCL.

Is there any other way to do this?

==== EDIT ====

Found working code for profile 104:

void MyMethod(object oParams)
{
    var dic = from property in oParams.GetType().GetProperties()
              select new KeyValuePair<string,object>(property.Name, property.GetValue(oParams,null));
    ...
}