.Net Linq to JSON with Newtonsoft JSON library -

i have json sent webservice looks this.

{     root: [         {             "key": "foo1",             "val": "150"         },         {             "key": "foo2",             "val": "220"         },         {             "key": "foo3",             "val": "300"         },         {             "key": "dataid",             "val": "2289"         }     ] } 

say wanted return value of val key equal "dataid". how using json.net library?

i know can loop through values find object far bigger example here.

thanks in advance

well something going have loop through @ point. if need fetch lots of values key same json, should build dictionary<string, string> - means looping on once (either explicitly or using linq todictionary method) having fast access afterwards.

here's sample code:

using system; using system.io; using system.linq;  using newtonsoft.json.linq;  class test {     static void main()     {         string text = file.readalltext("test.json");         jobject obj = jobject.parse(text);         jarray root = (jarray) obj["root"];          var dictionary = root.todictionary(x => (string) x["key"],                                            x => (string) x["val"]);          console.writeline(dictionary["dataid"]);     } }