I'm faced wiht an error, and I don't know how to correct it. I don't understand why it comes.
System.FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
The exception comes when I try to deserialize a JSON into objects that I created. (The second line code is throwing the exception)
List<Connection> connections = new List<Connection>();
var root = JsonConvert.DeserializeObject<RootObject2>(content);
connections = root.connections;
Here is the JSON that I want to use:
http://transport.opendata.ch/v1/connections?from=lausanne&to=fribourg
And here are my objects:
public class RootObject2
{
public List<Connection> connections { get; set; }
}
public class Connection
{
public Stop from { get; set; }
public Stop to { get; set; }
public string duration { get; set; }
public int? transfers { get; set; }
public Service service { get; set; }
public List<string> products { get; set; }
public int? capacity1st { get; set; }
public int? capacity2nd { get; set; }
public List<Section> sections { get; set; }
}
public class Stop
{
public Station station { get; set; }
public DateTime arrival { get; set; }
public int? arrivalTimestamp { get; set; }
public string departure { get; set; }
public int? departureTimestamp { get; set; }
public int? delay { get; set; }
public string platform { get; set; }
public Prognosis prognosis { get; set; }
public string realtimeAvailability {get; set;}
public Station location { get; set; }
}
public class Station
{
public string id { get; set; }
public string name { get; set; }
public int? score { get; set; }
public Coordinate coordinate { get; set; }
public double? distance { get; set; }
}
public class Service
{
public string regular { get; set; }
public string irregular { get; set; }
}
public class Section
{
public Journey journey { get; set; }
public Walk walk { get; set; }
public Stop departure { get; set; }
public Stop arrival { get; set; }
}
public class Journey
{
public string name { get; set; }
public string category { get; set; }
public string subcategory { get; set; }
public int? categoryCode { get; set; }
public string number { get; set; }
public string #operator { get; set; }
public string to { get; set; }
public List<Stop> passList { get; set; }
public int? capacity1st { get; set; }
public int? capacity2nd { get; set; }
}
public class Walk
{
public string duration { get; set; }
}
public class Prognosis
{
public string platform { get; set; }
public string arrival { get; set; }
public string departure { get; set; }
public int? capacity1st { get; set; }
public int? capacity2nd { get; set; }
}
public class Coordinate
{
public string type { get; set; }
public double x { get; set; }
public double y { get; set; }
}
The deserialization is on a try and catch block, and nothing is catched.
Also I am doing this on Android.
Based on json data.
Arrival property in Stop class should be DateTime?.
Related
Trying best how to take the following classes and deserialize a Json file to return each class values back to Simpl+. I am able to receive the Total value but anything in a list I am at a lost.
public class Client
{
public string clientId { get; set; }
public string locale { get; set; }
public string location { get; set; }
public string auxiliaryId { get; set; }
public string description { get; set; }
public string type { get; set; }
public string typeDescription { get; set; }
public Hardware hardware { get; set; }
public Network network { get; set; }
}
public class Hardware
{
public string type { get; set; }
public string softwareVersion { get; set; }
public string serialNumber { get; set; }
public string hardwareVersion { get; set; }
public string model { get; set; }
}
public class Network
{
public string ip { get; set; }
public string mac { get; set; }
public object homepage { get; set; }
public string dhcpSubnet { get; set; }
}
public class Result
{
public List<Client> clients { get; set; }
public string total { get; set; }
public int limit { get; set; }
public int page { get; set; }
}
public class Root
{
public string jsonrpc { get; set; }
public object id { get; set; }
public Result result { get; set; }
}
I was able to resolve this by adding the following to the foreach statement:
args.MyIndex = (ushort)(rootObject.TriplePlayResult.clients.IndexOf(item) + 1);
I want to make the simple application to use with my PBX. I want to manage the providers and Lines tat connected to my PBX. The main objects are Provider and Line. Every provider has some lines connected to it. Lines can be added or deleted enabled or disabled and reserved. I want to keep the status of lines and history of actions in one table. Does this right solution or I need to create another table for history?
public class Line
{
public int LineId { get; set; }
public Provider Provider { get;set;}
public string Login { get; set; }
public string Pass { get; set; }
public string Domain { get; set; }
public string ProjectOwner { get; set; }
public string Project { get; set; }
public string OutNumber { get; set; }
public string InNumber { get; set; }
public string Description { get; set; }
public DateTime Begin_datetime { get; set; }
public DateTime End_datetime { get; set; }
public Human TechGuy { get; set; }
public Human Manager { get; set; }
}
public class Provider
{
public int ProviderId { get; set; }
public string Name { get; set; }
public string OurSideData { get; set; }
public string TheirSideData { get; set; }
public string Description { get; set; }
public DateTime Begin_datetime { get; set; }
public DateTime End_datetime { get; set; }
public Currency Currency { get; set; }
}
What is the best solution for the code first model creating in the logic like that? Maybe I need to add some additional fields?
You need another table for history. Something like:
public class Line
{
public int LineId { get; set; }
public virtual Provider Provider { get; set; }
public string Login { get; set; }
public string Pass { get; set; }
public string Domain { get; set; }
public string ProjectOwner { get; set; }
public string Project { get; set; }
public string OutNumber { get; set; }
public string InNumber { get; set; }
public string Description { get; set; }
public DateTime Begin_datetime { get; set; }
public DateTime End_datetime { get; set; }
public Human TechGuy { get; set; }
public Human Manager { get; set; }
public virtual ICollection<LineStatusHistory> ChangeHistory { get; } = new HashSet<LineStatusHistory>();
}
public class LineStatusHistory
{
[Key( )]
public int LineId { get; set; }
[Key()]
public int LineStatusHistoryId { get; set; }
public virtual Line Line { get; set; }
public DateTime ChangeDate { get; set; }
public string Change { get; set; }
}
public class Provider
{
public int ProviderId { get; set; }
public string Name { get; set; }
public string OurSideData { get; set; }
public string TheirSideData { get; set; }
public string Description { get; set; }
public DateTime Begin_datetime { get; set; }
public DateTime End_datetime { get; set; }
public Currency Currency { get; set; }
public virtual ICollection<Line> Lines { get; } = new HashSet<Line>();
}
I'm trying to grab the high and low from this api, I am able to get the High, but can't figure out what to do to get the Low, which is the second occurring item with the name "fahrenheit", how could I do this using the same method I used for getting the High?
if (xmlForecast.Name == "fahrenheit" && i == 0)
{
i++;
xmlHigh = xmlForecast.ReadString();
}
Since you want solution using XML response, here it is:
First, you'll need to create classes which will represent XML response.
[XmlRoot("response")]
public class Response
{
[XmlElement("version")]
public string Version { get; set; }
[XmlElement("termsofService")]
public string TermsOfService { get; set; }
[XmlElement("features")]
public Features Features { get; set; }
[XmlElement("forecast")]
public Forecast Forecast { get; set; }
}
public class Features
{
[XmlElement("forecast")]
public int Forecast { get; set; }
}
public class Forecast
{
[XmlElement("txt_forecast")]
public TxtForecast TxtForecast { get; set; }
[XmlElement("simpleforecast")]
public SimpleForecast SimpleForecast { get; set; }
}
public class TxtForecast
{
[XmlElement("date")]
public string Date { get; set; }
[XmlArray("forecastdays")]
[XmlArrayItem("forecastday")]
public List<ForecastDay> ForecastDays { get; set; }
}
public class ForecastDay
{
[XmlElement("period")]
public int Period { get; set; }
[XmlElement("icon")]
public string Icon { get; set; }
[XmlElement("icon_url")]
public string IconUrl { get; set; }
[XmlElement("title")]
public string Title { get; set; }
[XmlElement("fcttext")]
public string FctText { get; set; }
[XmlElement("fcttext_metric")]
public string FctTextMetric { get; set; }
[XmlElement("pop")]
public string Pop { get; set; }
}
public class SimpleForecast
{
[XmlArray("forecastdays")]
[XmlArrayItem("forecastday")]
public List<ForecastDay2> ForecastDays { get; set; }
}
public class ForecastDay2
{
[XmlElement("date")]
public Date Date { get; set; }
[XmlElement("period")]
public int Period { get; set; }
[XmlElement("high")]
public High High { get; set; }
[XmlElement("low")]
public Low Low { get; set; }
[XmlElement("conditions")]
public string Conditions { get; set; }
[XmlElement("icon")]
public string Icon { get; set; }
[XmlElement("icon_url")]
public string IconUrl { get; set; }
[XmlElement("skyicon")]
public string SkyIcon { get; set; }
[XmlElement("pop")]
public int Pop { get; set; }
[XmlElement("qpf_allday")]
public QpfAllday QpfAllDay { get; set; }
[XmlElement("qpf_day")]
public QpfDay QpfDay { get; set; }
[XmlElement("qpf_night")]
public QpfNight QpfNight { get; set; }
[XmlElement("snow_allday")]
public SnowAllday SnowAllday { get; set; }
[XmlElement("snow_day")]
public SnowDay SnowDay { get; set; }
[XmlElement("snow_night")]
public SnowNight SnowNight { get; set; }
[XmlElement("maxwind")]
public MaxWind MaxWind { get; set; }
[XmlElement("avewind")]
public AveWind AveWind { get; set; }
[XmlElement("avehumidity")]
public int AveHumidity { get; set; }
[XmlElement("maxhumidity")]
public int MaxHumidity { get; set; }
[XmlElement("minhumidity")]
public int MinHumidity { get; set; }
}
public class Date
{
[XmlElement("epoch")]
public string Epoch { get; set; }
[XmlElement("pretty")]
public string Pretty { get; set; }
[XmlElement("day")]
public int Day { get; set; }
[XmlElement("month")]
public int Month { get; set; }
[XmlElement("year")]
public int Year { get; set; }
[XmlElement("yday")]
public int Yesterday { get; set; }
[XmlElement("hour")]
public int Hour { get; set; }
[XmlElement("min")]
public string Min { get; set; }
[XmlElement("sec")]
public int Sec { get; set; }
[XmlElement("isdst")]
public string Isdst { get; set; }
[XmlElement("monthname")]
public string MonthName { get; set; }
[XmlElement("monthname_short")]
public string MonthNameShort { get; set; }
[XmlElement("weekday_short")]
public string WeekdayShort { get; set; }
[XmlElement("weekday")]
public string Weekday { get; set; }
[XmlElement("ampm")]
public string AmPM { get; set; }
[XmlElement("tz_short")]
public string TzShort { get; set; }
[XmlElement("tz_long")]
public string TzLong { get; set; }
}
public class High
{
[XmlElement("fahrenheit")]
public string Fahrenheit { get; set; }
[XmlElement("celsius")]
public string Celsius { get; set; }
}
public class Low
{
[XmlElement("fahrenheit")]
public string Fahrenheit { get; set; }
[XmlElement("celsius")]
public string Celsius { get; set; }
}
public class QpfAllday
{
[XmlElement("#in")]
public double Inches { get; set; }
[XmlElement("mm")]
public int Milimeters { get; set; }
}
public class QpfDay
{
[XmlElement("#in")]
public double Inches { get; set; }
[XmlElement("mm")]
public int Milimeters { get; set; }
}
public class QpfNight
{
[XmlElement("#in")]
public double Inches { get; set; }
[XmlElement("mm")]
public int Milimeters { get; set; }
}
public class SnowAllday
{
[XmlElement("#in")]
public double Inches { get; set; }
[XmlElement("cm")]
public double Centimeters { get; set; }
}
public class SnowDay
{
[XmlElement("#in")]
public double Inches { get; set; }
[XmlElement("cm")]
public double Centimeters { get; set; }
}
public class SnowNight
{
[XmlElement("#in")]
public double Inches { get; set; }
[XmlElement("cm")]
public double Centimeters { get; set; }
}
public class MaxWind
{
[XmlElement("mph")]
public int Mph { get; set; }
[XmlElement("kph")]
public int Kph { get; set; }
[XmlElement("dir")]
public string Direction { get; set; }
[XmlElement("degrees")]
public int Degrees { get; set; }
}
public class AveWind
{
[XmlElement("mph")]
public int Mph { get; set; }
[XmlElement("kph")]
public int Kph { get; set; }
[XmlElement("dir")]
public string Direction { get; set; }
[XmlElement("degrees")]
public int Degrees { get; set; }
}
Secondly, you need to deserialize XML into Response
using (HttpClient client = new HttpClient())
{
using (var stream = await client.GetStreamAsync("http://api.wunderground.com/api/ea4bb7e7839782da/forecast/q/CA/San_Francisco.xml"))
{
var serializer = new XmlSerializer(typeof(Response));
var response = (Response)serializer.Deserialize(stream);
var simpleForecast = response.Forecast.SimpleForecast;
var forecastDays = simpleForecast.ForecastDays;
var latestForecastDay = forecastDays.Last();
var latestHighFahrenheit = latestForecastDay.High.Fahrenheit;
var latestLowFahrenheit = latestForecastDay.Low.Fahrenheit;
}
}
I am using XmlSerializer but you can also use DataContractSerializer which is newer. If you decide to use DataContractSerializer keep in mind that you'll need to replace XmlElement attributes with DataContract and DataMember.
Note: I've intentionally added few unnecessary steps and variable declarations, so you can see clearly what's going on here.
I have a class with nested subclasses:
public class listDevicesModel
{
public int totalCount { get; set; }
public Messages messages { get; set; }
public Devices devices { get; set; }
public class Entry
{
public string key { get; set; }
public object value { get; set; }
}
public class Detail
{
public List<Entry> entry { get; set; }
}
public class Devices
{
public List<Device> device { get; set; }
}
public class Device
{
public string #id { get; set; }
public string uuid { get; set; }
public string principal { get; set; }
public int blockReason { get; set; }
public int clientId { get; set; }
public string comment { get; set; }
public int compliance { get; set; }
public int countryCode { get; set; }
public int countryId { get; set; }
public string countryName { get; set; }
public string createdAt { get; set; }
public string currentPhoneNumber { get; set; }
public List<Detail> details { get; set; }
public int deviceCount { get; set; }
public string easLastSyncAttempt { get; set; }
public string easUuid { get; set; }
public string emailAddress { get; set; }
public string emailDomain { get; set; }
public bool employeeOwned { get; set; }
public string homeOperator { get; set; }
public int languageCountryId { get; set; }
public int languageId { get; set; }
public string lastConnectedAt { get; set; }
public string manufacturer { get; set; }
public bool mdmManaged { get; set; }
public int mdmProfileUrlId { get; set; }
public string model { get; set; }
public string name { get; set; }
public bool notifyUser { get; set; }
public string #operator { get; set; }
public int operatorId { get; set; }
public string platform { get; set; }
public string platformType { get; set; }
public int quarantinedStatus { get; set; }
public int regCount { get; set; }
public string regType { get; set; }
public string registeredAt { get; set; }
public string status { get; set; }
public int statusCode { get; set; }
public string userDisplayName { get; set; }
public string userFirstName { get; set; }
public string userLastName { get; set; }
public int userSource { get; set; }
public string userUUID { get; set; }
public int wipeReason { get; set; }
}
}
In my MVC razor view i try to access the data:
#model PostenNorge.Models.JsonObjectModels.listDevicesModel
<b>#Model.messages.message</b>
<br />
<br />
<ul>
#foreach(Device d in Model.devices.device)
{
<li>#d.name - #d.uuid - #d.currentPhoneNumber</li>
}
</ul>
On Device in the foreach i get "The type or namespace name "Device" could not be found".
How can i access the nested class types in my view?
You need to specify the nested name:
#foreach(listDevicesModel.Device d in Model.devices.device)
Or use implicit typing:
#foreach(var d in Model.devices.device)
Personally I'd avoid using nested classes here anyway, unless you really have to. Even if you do really have to, I'd rename the top-level class to follow normal naming conventions, i.e. make it start with a capital letter.
I'm getting the following exception when using this bit of code to deserialize a JSON response from CrunchBase. The weird thing is it only happens to certain pages that are being deserialized even though both the results that work fine and the ones that don't both have empty [], empty"", and null values in key:value pairs. How can I cast or correct my mistake?
Exception gets thrown here:
JsonSerializer serializer = new JsonSerializer();
RootObject ro = JsonConvert.DeserializeObject<RootObject>(response);
The inner exception is:
InnerException:
Message=Could not cast or convert from {null} to System.Int32.
Source=Newtonsoft.Json
Thanks for your eyes in advance!
Update:
as asked for the structure of the root object and the additional objects on that JSON endpoint. These were generated by http://json2csharp.com/ after putting the URL of the JSON endpoint into it.
The JSON is long so here are two example links: this one works without error http://api.crunchbase.com/v/1/company/kiip.js , while this other (and others) throws the exception http://api.crunchbase.com/v/1/company/tata-communications.js
public class Image
{
public List<List<object>> available_sizes { get; set; }
public object attribution { get; set; }
}
public class Person
{
public string first_name { get; set; }
public string last_name { get; set; }
public string permalink { get; set; }
}
public class Relationship
{
public bool is_past { get; set; }
public string title { get; set; }
public Person person { get; set; }
}
public class Provider
{
public string name { get; set; }
public string permalink { get; set; }
}
public class Providership
{
public string title { get; set; }
public bool is_past { get; set; }
public Provider provider { get; set; }
}
public class FinancialOrg
{
public string name { get; set; }
public string permalink { get; set; }
}
public class Person2
{
public string first_name { get; set; }
public string last_name { get; set; }
public string permalink { get; set; }
}
public class Investment
{
public object company { get; set; }
public FinancialOrg financial_org { get; set; }
public Person2 person { get; set; }
}
public class FundingRound
{
public string round_code { get; set; }
public string source_url { get; set; }
public string source_description { get; set; }
public double raised_amount { get; set; }
public string raised_currency_code { get; set; }
public int funded_year { get; set; }
public int funded_month { get; set; }
public int funded_day { get; set; }
public List<Investment> investments { get; set; }
}
public class Office
{
public string description { get; set; }
public string address1 { get; set; }
public string address2 { get; set; }
public string zip_code { get; set; }
public string city { get; set; }
public string state_code { get; set; }
public string country_code { get; set; }
public object latitude { get; set; }
public object longitude { get; set; }
}
public class VideoEmbed
{
public string embed_code { get; set; }
public string description { get; set; }
}
public class Screenshot
{
public List<List<object>> available_sizes { get; set; }
public object attribution { get; set; }
}
public class RootObject
{
public string name { get; set; }
public string permalink { get; set; }
public string crunchbase_url { get; set; }
public string homepage_url { get; set; }
public string blog_url { get; set; }
public string blog_feed_url { get; set; }
public string twitter_username { get; set; }
public string category_code { get; set; }
public int number_of_employees { get; set; }
public int founded_year { get; set; }
public int founded_month { get; set; }
public object founded_day { get; set; }
public object deadpooled_year { get; set; }
public object deadpooled_month { get; set; }
public object deadpooled_day { get; set; }
public object deadpooled_url { get; set; }
public string tag_list { get; set; }
public string alias_list { get; set; }
public string email_address { get; set; }
public string phone_number { get; set; }
public string description { get; set; }
public string created_at { get; set; }
public string updated_at { get; set; }
public string overview { get; set; }
public Image image { get; set; }
public List<object> products { get; set; }
public List<Relationship> relationships { get; set; }
public List<object> competitions { get; set; }
public List<Providership> providerships { get; set; }
public string total_money_raised { get; set; }
public List<FundingRound> funding_rounds { get; set; }
public List<object> investments { get; set; }
public object acquisition { get; set; }
public List<object> acquisitions { get; set; }
public List<Office> offices { get; set; }
public List<object> milestones { get; set; }
public object ipo { get; set; }
public List<VideoEmbed> video_embeds { get; set; }
public List<Screenshot> screenshots { get; set; }
public List<object> external_links { get; set; }
}
Json.NET supports JSON Schema. You could create a schema with all the required properties marked and validate incoming JSON against it before deserializing. In this you can check if value is null you can make change it to some default value.
Hope this works for you.