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(Mono C#) Get the Root of a JSON DocumentDemonstrates how to get back to the JSON root object from anywhere in the JSON document. This example uses the following JSON document: { "flower": "tulip", "abc": { "x": [ { "a" : 1 }, { "b1" : 100, "b2" : 200 }, { "c" : 3 } ], "y": 200, "z": 200 } }
Chilkat.JsonObject json = new Chilkat.JsonObject(); string jsonStr = "{\"flower\": \"tulip\",\"abc\":{\"x\": [{ \"a\" : 1 },{ \"b1\" : 100, \"b2\" : 200 },{ \"c\" : 3 }],\"y\": 200,\"z\": 200}}"; bool success = json.Load(jsonStr); if (success != true) { Debug.WriteLine(json.LastErrorText); return; } // Get the "abc" object. Chilkat.JsonObject abcObj = json.ObjectOf("abc"); if (json.LastMethodSuccess == false) { Debug.WriteLine("abc object not found."); return; } // Side note: The JSON of a sub-part of the document can be emitted from any JSON object: abcObj.EmitCompact = false; Debug.WriteLine(abcObj.Emit()); // Navigate to the "x" array Chilkat.JsonArray xArray = abcObj.ArrayOf("x"); // We'll skip the null check and assume it's non-null... // Navigate to the 2nd object contained within the array. This contains members b1 and b2 Chilkat.JsonObject bObj = xArray.ObjectAt(1); // We'll skip the null check and assume it's non-null... // Show that we're at "b1/b2". // The value of "b1" should be "200" Debug.WriteLine("b2 = " + Convert.ToString(bObj.IntOf("b2"))); // Now go back to the JSON doc root: Chilkat.JsonObject docRoot = bObj.GetDocRoot(); // We'll skip the null check and assume it's non-null... // Pretty-print the JSON doc from the root to show that this is indeed the root. docRoot.EmitCompact = false; Debug.WriteLine(docRoot.Emit()); |
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