Get value of dynamic objects in ASP.Net Core-CodePudding

I need to read a value from HTTP response. Here is an example of the response in which I'm trying to fetch (description) value:

{
  "result":{
    "code":"200.300.404",
    "description":"successful"
  },
  "buildNumber":"1f9@2021-12-23 09:56:49  0000",
  "timestamp":"2021-12-25 17:22:35 0000",
  "ndc":"8976eaedf8da"
}

Here is my code

Dictionary<string, dynamic> responseData;

string data = "entityId=8a8294174d0595bb014d05d82e5b01d2";

string url = "https://test.oppwa.com/v1/checkouts/"   CheckoutId   "/payment?"   data;
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
request.Method = "GET";
request.Headers["Authorization"] = "Bearer xxxx";

using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
    Stream dataStream = response.GetResponseStream();
    StreamReader reader = new StreamReader(dataStream);
    // var s = new JavaScriptSerializer();
    responseData = JsonSerializer.Deserialize<Dictionary<string, dynamic>>(reader.ReadToEnd());
    reader.Close();
    dataStream.Close();
}

// If responseDate.Description=success then enroll user and register the payment
         
var res = responseData["result"];
            
// I'm trying to do this but not working 
var res = responseData["result"]["description"];

return responseData;

Any help is appreciated Thanks

CodePudding user response：

You can use JToken or JObject of Newtonsoft.Json.Linq.

For example, if your response format like as below:

{
  "result":{
    "code":"200.300.404",
    "description":"successful"
  },
  "buildNumber":"1f9@2021-12-23 09:56:49  0000",
  "timestamp":"2021-12-25 17:22:35 0000",
  "ndc":"8976eaedf8da"
}

You can use below code for this purpose:

...

string webResponseAsString = reader.ReadToEnd();

dynamic dynamicResult = JToken.Parse(webResponseAsString);

string description = dynamicResult.result.description

For more details, you can visit this links:

Using JSON.NET for dynamic JSON parsing

Querying JSON with dynamic

What is better to use when parsing dynamic JSON data: JToken or c# built in dynamic type

CodePudding user response：

responseData["result"].description

Will get you the JValue of "successful".

Although there are some other issues. Deserialize needs an instance of JsonSerializer, it is not a static method. Here is a full example without using a Dictionary.

var response = @"
{
  ""result"":{
    ""code"":""200.300.404"",
    ""description"":""successful""
  },
  ""buildNumber"":""1f9@2021-12-23 09:56:49  0000"",
  ""timestamp"":""2021-12-25 17:22:35 0000"",
  ""ndc"":""8976eaedf8da""
}
";

var responseData = new JsonSerializer()
    .Deserialize<dynamic>(
        new JsonTextReader(new StringReader(response)));
responseData.result.description; //successful

CodePudding user response：

try this

StreamReader reader = new StreamReader(dataStream);
var json = reader.ReadToEnd();
...

var jsonObject=JObject.Parse(json);
var result=jsonObject["result"];

var description = jsonObject["result"]["description"];

// or 
var description =result["description"];

description value

successful