dynamic x = new ExpandoObject();x.NewProp = string.Empty;
或者：
var x = new ExpandoObject() as IDictionary<string, Object>;x.Add("NewProp", string.Empty);
dynamic x = new ExpandoObject();x.NewProp = string.Empty;
或者：
var x = new ExpandoObject() as IDictionary<string, Object>;x.Add("NewProp", string.Empty);名师互学网 版权所有 (c)2021-2022 ICP备案号：晋ICP备2021003244-6号
