Dynamic Anonymous type in Razor causes RuntimeBinderException

Question

I\'m getting the following error:

\'object\' does not contain a definition for \'RatingName\'

When you look at the anonymous dyn

Answer 1

Using the ExpandoObject Extension works but breaks when using nested anonymous objects.

Such as

var projectInfo = new {
 Id = proj.Id,
 UserName = user.Name
};

var workitem = WorkBL.Get(id);

return View(new
{
  Project = projectInfo,
  WorkItem = workitem
}.ToExpando());

To accomplish this I use this.

public static class RazorDynamicExtension
{
    /// 

    /// Dynamic object that we'll utilize to return anonymous type parameters in Views
    /// 
    public class RazorDynamicObject : DynamicObject
    {
        internal object Model { get; set; }

        public override bool TryGetMember(GetMemberBinder binder, out object result)
        {
            if (binder.Name.ToUpper() == "ANONVALUE")
            {
                result = Model;
                return true;
            }
            else
            {
                PropertyInfo propInfo = Model.GetType().GetProperty(binder.Name);

                if (propInfo == null)
                {
                    throw new InvalidOperationException(binder.Name);
                }

                object returnObject = propInfo.GetValue(Model, null);

                Type modelType = returnObject.GetType();
                if (modelType != null
                    && !modelType.IsPublic
                    && modelType.BaseType == typeof(Object)
                    && modelType.DeclaringType == null)
                {
                    result = new RazorDynamicObject() { Model = returnObject };
                }
                else
                {
                    result = returnObject;
                }

                return true;
            }
        }
    }

    public static RazorDynamicObject ToRazorDynamic(this object anonymousObject)
    {
        return new RazorDynamicObject() { Model = anonymousObject };
    }
}

Usage in the controller is the same except you use ToRazorDynamic() instead of ToExpando().

In your view to get the entire anonymous object you just add ".AnonValue" to the end.

var project = @(Html.Raw(JsonConvert.SerializeObject(Model.Project.AnonValue)));
var projectName = @Model.Project.Name;