c# 对象集合转Json-白红宇

c# 对象集合转Json

阅读量：5339 次

发布时间：2019-06-15

本文共 3480 字，大约阅读时间需要 11 分钟。

///          /// 普通集合转换Json         /// 
         /// 集合对象         /// 
     
      Json字符串
              public static string ToArrayString(IEnumerable array)        {            string jsonString = "[";            foreach (object item in array)            {                jsonString = ToJson(item.ToString()) + ",";            }            jsonString.Remove(jsonString.Length - 1, jsonString.Length);            return jsonString + "]";        }

///          /// 对象集合转换Json         /// 
         /// 集合对象         /// 
     
      Json字符串
              public static string ToJson(IEnumerable array)        {            string jsonString = "[";            foreach (object item in array)            {                jsonString += ToJson(item) + ",";            }            jsonString.Remove(jsonString.Length - 1, jsonString.Length);            return jsonString + "]";        }

///          /// 对象转换为Json         /// 
         /// 对象         /// 
     
      Json字符串
              public static string ToJson(object jsonObject)        {            string jsonString = "{
    ";            PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties();            for (int i = 0; i < propertyInfo.Length; i++)            {                object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null);                string value = string.Empty;                if (objectValue is DateTime || objectValue is Guid || objectValue is TimeSpan)                {                    value = "'" + objectValue.ToString() + "'";                }                else if (objectValue is string)                {                    value = "'" + ToJson(objectValue.ToString()) + "'";                }                else if (objectValue is IEnumerable)                {                    value = ToJson((IEnumerable)objectValue);                }                else                {                    value = ToJson(objectValue.ToString());                }                jsonString += "\"" + ToJson(propertyInfo[i].Name) + "\":" + value + ",";            }            jsonString.Remove(jsonString.Length - 1, jsonString.Length);            return jsonString + "}";        }

///         /// List转换成Json        /// 
        public static string ListToJson
     
      (IList
      
        list)        {            object obj = list[0];            return ListToJson
       
        (list, obj.GetType().Name);        }        /// 
                /// List转换成Json         /// 
        public static string ListToJson
        
         (IList
         
           list, string jsonName)        {            StringBuilder Json = new StringBuilder();            if (string.IsNullOrEmpty(jsonName)) jsonName = list[0].GetType().Name;            Json.Append("{\"" + jsonName + "\":[");            if (list.Count > 0)            {                for (int i = 0; i < list.Count; i++)                {                    T obj = Activator.CreateInstance
          
           (); PropertyInfo[] pi = obj.GetType().GetProperties(); Json.Append("{ "); for (int j = 0; j < pi.Length; j++) { Type type = pi[j].GetValue(list[i], null).GetType(); Json.Append("\"" + pi[j].Name.ToString() + "\":" + String.Format(pi[j].GetValue(list[i], null).ToString(), type)); if (j < pi.Length - 1) { Json.Append(","); } } Json.Append("}"); if (i < list.Count - 1) { Json.Append(","); } } } Json.Append("]}"); return Json.ToString(); }