/// <summary>/// 读取JSON文件/// </summary>/// <param name="key">JSON文件中的key值</param>/// <returns>JSON文件中的value值</returns>public string Readjson(string key){//获取winform应用根目录string jsonfile = Application.StartupPath.ToString()+ "\\**.json";//JSON文件路径using (System.IO.StreamReader file = System.IO.File.OpenText(jsonfile)){using (JsonTextReader reader = new JsonTextReader(file)){JObject o = (JObject)JToken.ReadFrom(reader);var value = o[key].ToString();return value;}}}