Develop Reference

How to pass incoming integer parameter value in json request while making a POST request

Making a POST request for the API, passing incoming json body as hardcoded string. Fine with all hardcoded values, only need to pass ID based on incoming parameter incomingID (int)
Checked couple of articles/questions, but didn't any clear answer. Please suggest/guide how to replace this hardcoded value 123456 with incoming parameter value (incomingID)
Replace field in Json file with some other value
How to replace placeholders inside json string?
private void CallAPI(int incomingID)
{
const string apiURL = "API URL"; // some test API
string getInfoResult = string.Empty;
try
{
HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(apiURL);
webrequest.Method = "POST";
webrequest.ContentType = "application/json";
using (var streamWriter = new StreamWriter(webrequest.GetRequestStream()))
{
string json = "{\"Information\":{\"messageHeader\":{\"message\":\"getInfo\",\"transactionDate\":\"2021-05-11T12:05:54.000\", \"transactionID\":\"2021-05-15T12:05:54.000-12345\",\"payLoadFormat\":\"V1\",\"ID\":123456}}}"; //pass this incomingID based on parameter value
streamWriter.Write(json);
}
HttpWebResponse webresponse = (HttpWebResponse)webrequest.GetResponse();
Encoding enc = System.Text.Encoding.GetEncoding("utf-8");
StreamReader responseStream = new StreamReader(webresponse.GetResponseStream(), enc);
getInfoResult = responseStream.ReadToEnd();
webresponse.Close();
}
catch (Exception ex)
{
throw ex;
}
}

To make this, you can use simple interpolation:
string json = $"{{\"Information\":{{\"messageHeader\":{{\"message\":\"getInfo\",\"transactionDate\":\"2021-05-11T12:05:54.000\", \"transactionID\":\"2021-05-15T12:05:54.000-12345\",\"payLoadFormat\":\"V1\",\"ID\":{incomingID}}}}}}}"
Note that open and close brackets should be repeated twice to escape them. But, this is weird and not so common way to make JSON strings. Better use serialization to achieve your goal. For an example, use Newtonsoft.Json nuget to (de)serialize your objects. What you need to do:
Create your models as separate classes:
PayloadFormat.cs
[Newtonsoft.Json.JsonConverter(typeof(StringEnumConverter))] // this string will force your enum serialize as "V1" instead of "0"
public enum PayloadFormat
{
V1,
V2,
V3
}
MessageHeader.cs
public class MessageHeader
{
public MessageHeader(string message, DateTime transactionDate, string transactionId, PayloadFormat payloadFormat, int id)
{
Message = message;
TransactionDate = transactionDate;
TransactionId = transactionId;
PayloadFormat = payloadFormat;
Id = id;
}
public string Message { get; set; }
public DateTime TransactionDate { get; set; } // change type if you need to
public string TransactionId { get; set; } // change type if you need to
public PayloadFormat PayloadFormat { get; set; } // change type if you need to
public int Id { get; set; }
}
Information.cs
public class Information
{
public Information(MessageHeader messageHeader)
{
MessageHeader = messageHeader;
}
public MessageHeader MessageHeader { get; set; }
}
Create an instance of your Information class:
var information = new Information(new MessageHeader("getInfo", DateTime.Now, $"{DateTime.Now}-12345", PayloadFormat.V1, incomingID));
Serialize your string (make sure you are using Newtonsoft.Json;):
var json = JsonConvert.SerializeObject(information);
Then use your json as you need to. The result will be:
{
"MessageHeader": {
"Message": "getInfo",
"TransactionDate": "2022-05-17T19:45:33.2161326+05:00",
"TransactionId": "17.05.2022 19:45:33-12345",
"PayloadFormat": "V1",
"Id": 5
}
}

Receive API Response in c#

im trying to get a this value that i send with JSON string POST, when i receive the response in postman, there's value like status, id, etc that i not POST, while i do understand get the value from JSON string,
i dont quite understand to get a receive API value like status and Name
what i do tried recently
public class Condition
{
public string status { get; set; }
public string name { get; set; }
public string positition { get; set; }
public int no_id { get; set; }
public string time_auth { get; set; }
public string account_type { get; set; }
}
for the method
public partial class ResponseJSON
{
public bool Result(string jsonData, string URL, out string status)
{
bool resultresponse = false;
var request = (HttpWebRequest)WebRequest.Create(URL);
request.ContentType = "application/json";
request.Method = "POST";
var writer = new StreamWriter(request.GetRequestStream());
string wrote = jsonData;
writer.Write(wrote);
var httpResponse = (HttpWebResponse)request.GetResponse();
var streamReader = new StreamReader(httpResponse.GetResponseStream());
var result = streamReader.ReadToEnd();
dynamic R = JsonConvert.DeserializeObject<dynamic>(wrote);
status = R.auth_type;
return resultresponse;
}
}
and for the main
string jsonData = #"{
'auth_type':'7',
'staff_id':'1234567890',
'staff_pin': '1234'}";
dynamic data = JObject.Parse(jsonData);
string URL = "Link URL";
string status = string.Empty;
ResponseJSON responseJSON = new ResponseJSON();
responseJSON.Result(jsonData, URL, out status);

You might want to declare the same class "Condition" on your client side, so you can deserialize the response with Newtonsoft with something like this:
var conditionResponse = JsonConvert.DeserializeObject<Condition>(jsonData);

Streaming Api consumption

I have an api http://oversea-download.hikvision.com/uploadfile/Leaflet/ISAPI/HIKVISION%20ISAPI_2.0-IPMD%20Service.pdf I want to receive which uses a HTTP get and wants connection keep-alive.
Once connected it sends XML responses which I want to deserialise. I've created a class to represent the data structure, but I'm not sure how to continually update a list or similar as and when the data is sent back, for example the response (from wireshark) looks like:
I'm not concerned with the parsing of data and updating the list, more how I can keep listening on a socket and see that its XML data and needs to be serialised.. without processing the stream into a buffer and looking for delimiters?
So far the code I had been unsuccessfully playing with looks like:
public static async Task NewTask()
{
var client = new RestClient("http://192.168.0.152:80/");
client.Authenticator = new HttpBasicAuthenticator("admin", "ThePassword");
client.Encoding = Encoding.UTF8;
var request = new RestRequest("ISAPI/Event/notification/alertStream", Method.GET);
request.AddHeader("Connection", "keep-alive");
request.AddHeader("Content-Type", "application/xml");
IRestResponse<EventNotificationAlert> response2 = client.Execute<EventNotificationAlert>(request);
var name = response2.Data.eventType;
Console.WriteLine(name);
//var asyncHandle = client.ExecuteAsync<EventNotificationAlert>(request, response => {
// Console.WriteLine(response.Data.eventDescription);
//});
}
and the class:
public class EventNotificationAlert
{
public string version { get; set; }
public string ipAddress { get; set; }
public string portNo { get; set; }
public string protocol { get; set; }
public string macAddress { get; set; }
public string channelID { get; set; }
public string dateTime { get; set; }
public string activePostCount { get; set; }
public string eventType { get; set; }
public string eventState { get; set; }
public string eventDescription { get; set; }
}

disregard my comment, can't format it.. this kind of works.. but given I get boundary and content-type text I've got crude processing in...
var messageBuffer = string.Empty;
var request = WebRequest.Create("http://192.168.0.152:80/ISAPI/Event/notification/alertStream");
request.Credentials = new NetworkCredential("admin", "ThePassword");
request.BeginGetResponse(ar =>
{
var req = (WebRequest)ar.AsyncState;
// TODO: Add exception handling: EndGetResponse could throw
using (var response = req.EndGetResponse(ar))
using (var reader = new StreamReader(response.GetResponseStream()))
{
// This loop goes as long as the api is streaming
while (!reader.EndOfStream)
{
var line = reader.ReadLine();
if (line == xmlEndStr)
{
messageBuffer += line;
GotMessage(messageBuffer);
messageBuffer = string.Empty;
}
else if (line.StartsWith("<"))
{
messageBuffer += line;
}
}
}
}, request);
static void GotMessage(string msg)
{
var mySerializer = new XmlSerializer(typeof(EventNotificationAlert));
var stringReader = new StringReader(msg);
var eventAlert = (EventNotificationAlert)mySerializer.Deserialize(stringReader);
Console.WriteLine($"DateTime: {eventAlert.dateTime} Channel: {eventAlert.channelID} Type: {eventAlert.eventType} Description: {eventAlert.eventDescription}");
}
Happy to hear of better ways (as you can tell I'm not great with c#!)

Invalidcastexception JsonConvert.DeserializeObject

I am getting an invalid cast exception that the specified cast is not valid. On this line:
RootObject mountain = JsonConvert.DeserializeObject<RootObject>(json1);
From the documentation this should be fine? I can see the console output is fine?
Response: [{"Height_ft": 2999.0, "Height_m": 914.0, "ID": "c1",
"Latitude": 57.588007, "Longitude": -5.5233564, "Name": "Beinn Dearg",
"humidity": 0.81, "snowCover": 4.99, "temperature": 63.0}]
Spinner spinner = (Spinner)sender;
string urlmountain = "http://removed.azurewebsites.net/api/Mountains?name=";
JsonValue json1 = FetchMountain(urlmountain+string.Format("{0}", spinner.GetItemAtPosition(e.Position)));
//below.................................
RootObject mountain = JsonConvert.DeserializeObject<RootObject>(json1); //this line
string toast = mountain.Name;
Toast.MakeText(this, toast, ToastLength.Long).Show();
private JsonValue FetchMountain(string urlmountain)
{
// Create an HTTP web request using the URL:
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new Uri(urlmountain));
request.ContentType = "application/json";
request.Method = "GET";
// Send the request to the server and wait for the response:
using (WebResponse response = request.GetResponse())
{
// Get a stream representation of the HTTP web response:
using (Stream stream = response.GetResponseStream())
{
// Use this stream to build a JSON document object:
JsonValue jsonDoc1 = JsonObject.Load(stream);
Console.Out.WriteLine("Response: {0}", jsonDoc1.ToString());
// Return the JSON document:
return jsonDoc1;
}
}
}
public class RootObject
{
public string ID { get; set; }
public double? Latitude { get; set; }
public double? Longitude { get; set; }
public string Name { get; set; }
public double? Height_m { get; set; }
public double? Height_ft { get; set; }
public double? temperature { get; set; }
public double? humidity { get; set; }
public double? snowCover { get; set; }
public override string ToString()
{
return Name;
}
}

The json data being returned is an array of objects, not a single object, as denoted by the opening and closing brackets []. You need to deserialize to an array or a list:
var mountains = JsonConvert.DeserializeObject<List<RootObject>>(json);
To access the first mountain from the deserialized payload, use .FirstOrDefault().
var mountain = mountains.FirstOrDefault();
if (mountain != null)
{
string toast = mountain.Name;
Toast.MakeText(this, toast, ToastLength.Long).Show();
}

It looks like your JSON is an Array of objects. You should be able to deserialize the array and get the first one like so:
RootObject mountain = JsonConvert.DeserializeObject<RootObject[]>(json1)[0];
One thing to note is that you are sort of mixing technologies here. JsonValue is from the System.Json namespace, whereas JsonConvert is from the Newtonsoft.Json (i.e. JSON.Net) namespace. If you wanted to go strictly with JSON.Net, you could do something like this:
private RootObject FetchMountain(string urlmountain)
{
// Create an HTTP web request using the URL:
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new Uri(urlmountain));
request.ContentType = "application/json";
request.Method = "GET";
using (WebResponse response = request.GetResponse())
using (Stream stream = response.GetResponseStream())
using (StreamReader streamReader = new StreamReader(stream))
{
JsonSerializer serializer = new JsonSerializer();
RootObject[] mountains = (RootObject[])serializer.Deserialize(streamReader, typeof(RootObject[]));
return (mountains.Length > 0) ? mountains[0] : null;
}
}

How to get UserContactLists from constant contact using c#

I am going to use Constant contact for email marketing. I am not getting how to get userContactList which are all there in my constant contact account.If anyone have any idea please help me.
Thanks in advance

Here is some code I wrote a while ago that returns the user list ID based on the name of an existing user list. its all C# and uses RESTSharp library which you can install inside your VS project using Nuget.
public static string GetContactListIDByListName(string listname)
{
feedData = string.Empty;
id = string.Empty;
name = string.Empty;
status = string.Empty;
modified_date = string.Empty;
created_date = string.Empty;
contact_count = 0;
Stream stream = null;
StreamReader streamReader = null;
var client = new RestClient(ccURL);
var request = new RestRequest("/v2/lists?modified_since=[DATE]&api_key=[API-KEY]", Method.GET);
request.AddHeader("Authorization", "Bearer [ACCESS-TOKEN]");
request.AddHeader("X-Originating-Ip", "[SERVER-IP]");
request.AddHeader("Accept", "application/json");
IRestResponse response = client.Execute(request);
feedData = response.Content;
// DESERIALIZE Mashery JSON Response
byte[] byteArray = Encoding.ASCII.GetBytes(feedData);
MemoryStream myStream = new MemoryStream(byteArray);
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(Mashery.GetAllListsDef[]));
object result = serializer.ReadObject(myStream);
Mashery.GetAllListsDef[] jsonObj = result as Mashery.GetAllListsDef[];
foreach (Mashery.GetAllListsDef myResult in jsonObj)
{
if (myResult.name.ToUpper().Equals(listname.ToUpper()))
{
return myResult.id.ToString();
}
}
return "";
}
// JSON Definition For [GET All Lists] End Point Method
[Serializable, XmlRoot("GetAllListsDef"), DataContract(Name = "GetAllListsDef")]
public class GetAllListsDef
{
[XmlElement("id"), DataMember(Name = "id")]
public string id { get; set; }
[XmlElement("name"), DataMember(Name = "name")]
public string name { get; set; }
[XmlElement("status"), DataMember(Name = "status")]
public string status { get; set; }
[XmlElement("created_date"), DataMember(Name = "created_date")]
public string created_date { get; set; }
[XmlElement("modified_date"), DataMember(Name = "modified_date")]
public string modified_date { get; set; }
[XmlElement("contact_count"), DataMember(Name = "contact_count")]
public string contact_count { get; set; }
}