之前的博文中有介绍过，Web Api中的一个删除单个属性的Api但没提供查找字段的删除方法，本篇补充上，这里给出的示例代码是C#的(主要看url的拼接)，看下url中最后的/$ref,这个标示表明了当前删除的字段是一个查找类型的，区别就在这。

 string weburi = System.Configuration.ConfigurationManager.AppSettings["WebUri"]

    + entityName +"(" + guid.Replace("{", "").Replace("}", "") + ")/" + propertyName + "/$ref";

            HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(weburi);

            req.Credentials = new NetworkCredential(username, pwd, domain);

            req.Method = "DELETE";

            req.ContentType = "application/json; charset=utf-8";

            req.Headers.Add("OData-MaxVersion", "4.0");

            req.Headers.Add("OData-Version", "4.0");

            using (HttpWebResponse res = (HttpWebResponse)req.GetResponse())

            {

            }