实体类和json互相转换

/// <summary>

/// 将实体类转换为json数据

/// </summary>

/// <returns></returns>

public string getJsonInfo()

{

BillPostModel model = new BillPostModel();

model.amount =;

model.cid ="";

model.id = "";

model.payment_date ="2017-09-09";

model.remark = "测试";

model.sample_id = "";

//将对象序列化json

DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(BillPostModel));    //注意这里是实体类 类名

//创建存储区为内存流

System.IO.MemoryStream ms = new MemoryStream();

//将json字符串写入内存流中

serializer.WriteObject(ms, model);

System.IO.StreamReader reader = new StreamReader(ms);

ms.Position = ;

string strRes = reader.ReadToEnd();

reader.Close();

ms.Close();

return strRes;

}

/// <summary>

/// 把Json文本转为实体

/// </summary>

/// <typeparam name="T"></typeparam>

/// <param name="input"></param>

/// <returns></returns>

public static T FromJSON<T>(string input)

{

try

{

 //{"IP":"58.215.186.139", "CPU":"0.0%", "AllMem":"256 G","RemainMem":"217.2 G","UserdMem":"38.8 G [ 15.15625% ]",  "download":"267.57 kbps"  ,"upload":"18.00 kbps" ,"runtime":"61-19-34" ,"OS":"Microsoft Windows NT 6.1.7601 Service Pack 1","Disk":"C:\RemainDisk：22.1G,AllDisk：50.0G|D:\RemainDisk：110.6G,AllDisk：182.3G|E:\RemainDisk：399.7G,AllDisk：837.7G|" ,"t":"2019-03-29 17:18:14"  ,"rundt":"2019-01-27 21:43:42"}

return JsonConvert.DeserializeObject<T>(input);

}

catch (Exception ex)

{

return default(T);

}

}