Mittwoch, 18. März 2020

json - newtowsoft - JArray - SelectToken

how to fill JArray and select all and specific items? 

private Newtonsoft.Json.Linq.JArray UFOS = new jsonlib.Linq.JArray();

dynamic json = Newtonsoft.Json.JsonConvert.DeserializeObject(myUFOjsonSourceString);

var list = json.list; // List of UFO items - 'list' is the root element of the source JSON structure

foreach (var item in list)

IEnumerable<jsonlib.Linq.JToken> allUFOS= UFOS.SelectToken("$"); // okay, all UFOs

IEnumerable<jsonlib.Linq.JToken> oneUFO = UFOS.SelectToken("$[?(@.Pilot=='E.T.')]"); // okay, if each item of UFO would contain the property 'Pilot', select the one where Pilot=E.T. (you know, this small odd alien who wants to get home again)

Sample II:

Parse XML using Newtonsoft.Json


XDocument doc = XDocument.Parse(mySampleXmlString); //or XDocument.Load(path)
string jsonText = JsonConvert.SerializeXNode(doc);
dynamic pseudoXml = JsonConvert.DeserializeObject(jsonText);
Newtonsoft.Json.Linq.JArray lights = (Newtonsoft.Json.Linq.JArray)pseudoXml["root"]["light"];
foreach (var light in lights)
    string color = (string)light.color;
    string intensity = (string)light.intensity;

Dienstag, 17. März 2020

Pass string parameter plus optional placeholder fill up arguments to a method - method signature for String.Format(..)

how to setup a method getting args to be applied using String.Format(....)?


        private void log(object text, params object[] param)
            string line;
            if (param != null && param.Length > 0)
                line = String.Format(text.ToString(), param);
                line = text.ToString();
            if (Environment.UserInteractive==true)

text to enum value

classic request how to convert a text entry to an enum value? See..

Colors orange = (Colors) Enum.Parse(typeof(Colors), "Red, Yellow");