linq - how to check the dataFrame contains the particular string in C# -


i have 2 datas coming 1. temperature , 2.humidity not coming @ same time. in 1 record temperature coming , record humidity coming , want store latest humidity data , latest temperature data in variable , update in model. taking latest 1 , latest 3 humidity , temperature, times order changes. how filter data according data contains in record . latest record containing vgvt should stored in data variable , latest shvt should stored in humdata variable.

vgvt = tempreture shvt =humidity

                webrequest req = webrequest.create(@"url");                 req.method = "get";                 req.headers["authorization"] = "basic " + "password@123==";                 httpwebresponse resp = req.getresponse() httpwebresponse;                 var encoding = resp.characterset == "" ? encoding.utf8 : encoding.getencoding(resp.characterset);                 using (var stream = resp.getresponsestream())                 {                     var reader = new streamreader(stream, encoding);                     var responsestring = reader.readtoend();                     list<pirdetail> pirs = newtonsoft.json.jsonconvert.deserializeobject<list<pirdetail>>(responsestring);                     var item = pirs[pirs.count - 3];                     var humidity = pirs[pirs.count - 1];                     byte[] data = convert.frombase64string(item.dataframe.tostring());                     byte[] humdata = convert.frombase64string(humidity.dataframe.tostring());                     temperatureviewmodel tempmodel = new temperatureviewmodel();                     tempmodel.filled= convert.todouble(encoding.utf8.getstring(data).substring(5));                     tempmodel.humidity= convert.todouble(encoding.utf8.getstring(humdata).substring(4));

view model

 public class temperatureviewmodel     {         public string id { get; set; }         public string name { get; set; }         public double filled { get; set; }         public double humidity { get; set; }         public string updatedtime { get; set; }         public string area { get; set; }         public string deviceid { get; set; }     }


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