Removes property from root object and all nested objects, recursively

JObjectExtensions.cs

using Newtonsoft.Json.Linq;
using System.Collections.Generic;

namespace YourProject.Extensions
{
    public static class JObjectExtensions
    {
        /// <summary>
        /// Removes Recursively all keys named as the property argument
        /// </summary>
        /// <param name="obj">object to search for property, search is recursive</param>
        /// <param name="property">property to remove from the whole object</param>
        /// <returns></returns>
        public static JObject RemovePropertyRecursive(this JObject obj, string property)
        {
            obj.Remove(property);
            foreach (KeyValuePair<string, JToken> prop in obj)
            {
                if (prop.Value is JObject)
                    RemovePropertyRecursive((JObject)prop.Value, property);
                if (prop.Value is JArray)
                {
                    JArray array = (JArray)prop.Value;
                    foreach (JToken item in array.Children())
                        if (item is JObject)
                            RemovePropertyRecursive((JObject)item, property);
                }
            }
            return obj;
        }
    }
}