I'm trying to use the HUE API, I was able to get the JSON with the list of the bulb but when i'm trying to make a custom object from it, its not working. No error and no exception, nothing is happening. Here's my attempt :
LightsPage.xaml.cs
public partial class LightsPage : Page
{
public LightsPage()
{
InitializeComponent();
}
private void Page_Loaded(object sender, RoutedEventArgs e)
{
var listLights = Light.GetLightAsync();
Console.WriteLine();
}
}
Light.cs
public class Light
{
private string name { get; set; }
private string productname { get; set; }
private string uniqueid { get; set; }
private StateLight state { get; set; }
public Light()
{
}
public Light(string Name, string Productname, string Uniqueid, StateLight State)
{
name = Name;
productname = Productname;
uniqueid = Uniqueid;
state = State;
}
static async public Task<List<Light>> GetLightAsync()
{
List<Light> lights = new List<Light>();
Uri baseUri = new Uri($"http://{ConfigurationManager.AppSettings["IpBridge"]}");
Uri apiUri = new Uri(baseUri, $"/api/{ConfigurationManager.AppSettings["userName"]}/lights");
HttpClient client = new HttpClient();
HttpResponseMessage response = await client.GetAsync(apiUri);
response.EnsureSuccessStatusCode();
string responseBody = await response.Content.ReadAsStringAsync();
dynamic jsonResult = JsonConvert.DeserializeObject(responseBody);
foreach(var item in jsonResult)
{
Light light = new Light
{
name = (string)item["name"],
productname = (string)item["productname"],
uniqueid = (string)item["uniqueid"],
state = new StateLight
{
on = (bool)item["state"]["on"],
bri = (int)item["state"]["bri"]
}
};
lights.Add(light);
}
return lights;
}
}
The JSON looks like this :
{"1":{"state":{"on":true,"bri":254,"alert":"select","mode":"homeautomation","reachable":true},
"swupdate":{"state":"noupdates","lastinstall":"2020-02-22T14:21:56"},
"type":"Dimmable light",
"name":"Salon blanc",
"modelid":"LWA001",
"manufacturername":"Signify Netherlands B.V.",
"productname":"Hue white lamp",
"capabilities":{"certified":true,"control":{"mindimlevel":5000,"maxlumen":800},
"streaming":{"renderer":false,"proxy":false}}, etc....
There is multiple bulb but you get the point.
In debug, when i'm reaching the construction of the objects Light in the loop, it stops there.
I'm fairly new to Task and Async so maybe it's coming from here but I don't know what to do...
Thx for your answers :)
Related
So, I have been struggling with this for a while now, but I am getting a bit further each day. But now I am really stuck.
What I am trying to do:
I have an automation account with a runbook (PowerShell)
I want to create a schedule
Then I want to connect that schedule to the runbook so the runbook is executed at a specific date and time.
I want to achieve this through C# with the Management API of Azure. I found a few webpages that should give me all the information I needed, but it doesn't work.
The first one is this: https://learn.microsoft.com/en-us/rest/api/automation/schedule/create-or-update?tabs=HTTP
I get this to work and I can see the schedule after I ran the code.
The second one is this: https://learn.microsoft.com/en-us/rest/api/automation/job-schedule/create?tabs=HTTP
And here I get stuck. I get a 404 error when I execute the request and I have no idea what I am doing wrong.
The code below is far from perfect, but it's a POC and not the actual application. I want to make it work before I refactor.
This class has all the logic for the schedule:
public class ScheduleLogic
{
const string subscriptionId = "######";
const string resourceGroupName = "######";
const string automationAccountName = "######";
const string tenantId = "######";
const string clientId = "######";
const string clientSecret = "######";
const string resourceId = "https://management.azure.com/";
public string accessToken { get; set; }
// THIS ONE DOESN'T WORK!
public async Task ConnectScheduleToRunbook(RunbookSchedule runbookSchedule)
{
StringContent body = new(JsonSerializer.Serialize(runbookSchedule));
body.Headers.ContentType = new MediaTypeHeaderValue("application/json");
string url = $"https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Automation/automationAccounts/{automationAccountName}/jobSchedules/{runbookSchedule.Properties.Schedule.JobScheduleId}?api-version=2019-06-01";
await ExecuteRequest(RequestType.Put, url, body);
}
public async Task CreateSchedule(Schedule schedule)
{
if (string.IsNullOrEmpty(schedule.JobScheduleId))
throw new Exception("Job schedule ID is empty");
StringContent body = new(JsonSerializer.Serialize(schedule));
body.Headers.ContentType = new MediaTypeHeaderValue("application/json");
string url = $"https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Automation/automationAccounts/{automationAccountName}/schedules/{schedule.JobScheduleId}?api-version=2019-06-01";
await ExecuteRequest(RequestType.Put, url, body);
}
public async Task DeleteSchedule(string scheduleName)
{
string url = $"https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Automation/automationAccounts/{automationAccountName}/schedules/{scheduleName}?api-version=2019-06-01";
await ExecuteRequest(RequestType.Delete, url, null);
}
private async Task ExecuteRequest(RequestType requestType, string url, StringContent? body)
{
HttpResponseMessage response;
using (HttpClient client = new())
{
client.DefaultRequestHeaders.Add("Authorization", $"Bearer {await GetAccessToken()}");
switch (requestType)
{
case RequestType.Put:
if (body == null)
throw new Exception("Body cannot be empty");
response = await client.PutAsync(url, body);
break;
case RequestType.Delete:
response = await client.DeleteAsync(url);
break;
default:
throw new Exception("Unknown request type");
}
if (!response.IsSuccessStatusCode)
{
var content = await response.Content.ReadAsStringAsync();
throw new Exception(content);
}
}
}
private async Task<string> GetAccessToken()
{
if (!string.IsNullOrEmpty(accessToken))
return accessToken;
AuthenticationContext authContext = new("https://login.microsoftonline.com/" + tenantId);
ClientCredential clientCreds = new(clientId, clientSecret);
AuthenticationResult authResult = await authContext.AcquireTokenAsync(resourceId, clientCreds);
accessToken = authResult.AccessToken;
return accessToken;
}
}
Models:
public class RunbookSchedule
{
public RunbookScheduleProperties Properties { get; set; }
}
public class RunbookScheduleProperties
{
public Schedule Schedule { get; set; }
public Runbook Runbook { get; set; }
public object Parameters { get; set; }
}
public class Runbook
{
public string Name { get; set; }
}
public class Schedule
{
public string Name { get; set; }
[JsonIgnore]
public string JobScheduleId { get; set; }
[JsonPropertyName("properties")]
public ScheduleProperties ScheduleProperties { get; set; }
}
public class ScheduleProperties
{
public string Description { get; set; }
public DateTime StartTime { get; set; }
public DateTime ExpiryTime { get; set; }
public string Frequency { get; set; }
public object AdvancedSchedule => new { };
}
And the unit tests I use to test the logic:
public class ScheduleTests
{
private readonly string jobId = "d52004cc-b7ec-4b9b-99c1-3922492f6e1b-1";
private readonly string runbookName = "RunFunctionApp";
private readonly ScheduleLogic scheduleService;
public ScheduleTests()
{
scheduleService = new();
}
[Fact]
public async Task Should_CreateASchedule()
{
Schedule newScheduleSettings = new()
{
Name = jobId,
JobScheduleId = jobId,
ScheduleProperties = new()
{
Description = "Here is another example",
StartTime = new DateTime(2024, 03, 27, 9, 0, 0, 0),
ExpiryTime = new DateTime(2024, 03, 27, 10, 0, 0, 0),
Frequency = "OneTime"
}
};
await scheduleService.CreateSchedule(newScheduleSettings);
}
[Fact]
public async Task Should_DeleteSchedule()
{
await scheduleService.DeleteSchedule(jobId);
}
[Fact]
public async Task Should_ConnectScheduleAndRunbook()
{
await scheduleService.ConnectScheduleToRunbook(new RunbookSchedule
{
Properties = new()
{
Schedule = new() { Name = jobId, JobScheduleId = jobId },
Runbook = new() { Name = runbookName },
Parameters = new { id = 12 }
}
});
}
}
Somehow I think I am doing something stupid and the fix/answer is really simple.
I tried to mess around with the URL because I think there is a problem with that, not sure why... Just a feeling.
Google did show me some results, but those were for schedules of other services. Runbooks and automation don't seem to be very popular.
ChatGPT comes with older, obsolete solutions. Visual Studio gives a lot of green and even red lines when I try those suggestions.
I would like to start by saying that I am not a developer and this is my very first time writing a code to this extend of complication (at least to me). Any help/guidance would be much appreciated.
The idea of this program is to retrieve the employee user ID (or signature) from an API URL once the name has been entered.
I created a class that identifies the information that needs to be retrieved from the API (Below is the code):
namespace TimeSheet_Try11_Models
{
public class Employeename
{
public List<string> Signature { get; set; }
public List<string> FirstName { get; set; }
public List<string> FullName { get; set; }
public List<string> LastName { get; set; }
}
}
Next I created a folder called WebAPI which will access the API and retrieve the needed information. (please see the code)
namespace TimeSheets_Try_11.Controllers
{
class WebAPI
{
public string Getsignature(string name)
{
var cookies = FullWebBrowserCookie.GetCookieInternal(new Uri(StaticStrings.UrlIora), false);
WebClient wc = new WebClient();
wc.Encoding = System.Text.Encoding.UTF8;
wc.Headers.Add("Cookie:" + cookies);
wc.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
wc.UseDefaultCredentials = true;
string uri = "";
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
uri = StaticStrings.UrlIora + name;
var response = wc.DownloadString(uri);
string json = #"[{'signature':'JANDO','firstName':'Jane','fullName':'Deo, Jane','lastName':'Deo'}]";
Employeename status = JsonConvert.DeserializeObject<Employeename>(json);
string signature = status.Signature.ToString();
return signature;
}
}
}
Finally, the following code is my code for the forms that will retrieve and display information.
namespace TimeSheets_Try_11
{
public partial class Form1 : Form
{
WebAPI WA = new WebAPI();
public Form1()
{
InitializeComponent();
webBrowser1.Url = new Uri(StaticStrings.UrlIora);
}
private void label1_Click(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
string strurltest = string.Format("https://iora.UniversityofHouston.com/api/dictionary/employee/" + textBox1.Text);
System.Net.WebRequest requestObjGet = WebRequest.Create(strurltest);
requestObjGet.Credentials = CredentialCache.DefaultNetworkCredentials;
requestObjGet.Method = "Get";
HttpWebResponse reponsObjGet = null;
reponsObjGet = (HttpWebResponse)requestObjGet.GetResponse();
string[] usernames = new string[] { "Koehne, Craig", "Bergeron, Ronald" };
string[] userid = new string[] { "CKOEH", "RONBE" };
for (int i = 0; i < usernames.Length; i++)
{
if (textBox1.Text.Contains(usernames[i]))
{
textBox2.Text = userid[i];
}
}
string sgname; string projectstring;
projectstring = textBox1.Text.ToString();
sgname = WA.Getsignature(projectstring);
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
string StringConn = textBox1.Text;
}
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
}
}
}
Problem: The code does not seem to have any errors, however when I start debugging the code, it gives me an error that states:
"Newtonsoft.Json.JsonSerializationException: 'Cannot deserialize the
current JSON array (e.g. [1,2,3]) into type
'TimeSheet_Try11_Models.Employeename' because the type requires a JSON
object (e.g. {"name":"value"}) to deserialize correctly."
Your JSON string contains an array that contains one object. But you're trying to deserialize it into just a single object.
Either deserialize the JSON string into a C# array:
string json = #"[{'signature':'JANDO','firstName':'Jane','fullName':'Deo, Jane','lastName':'Deo'}]";
Employeename[] status = JsonConvert.DeserializeObject<Employeename[]>(json);
Or change the JSON string so it's no longer an array, just an object:
string json = #"{'signature':'JANDO','firstName':'Jane','fullName':'Deo, Jane','lastName':'Deo'}";
Employeename status = JsonConvert.DeserializeObject<Employeename>(json);
Also, your Employeename class makes no sense, the properties should be of type string:
public class Employeename
{
public string Signature { get; set; }
public string FirstName { get; set; }
public string FullName { get; set; }
public string LastName { get; set; }
}
IMPORTANT - Microsoft is retiring AppCenter Push pretty soon, you can still follow my answer below to implement it. Or you can follow my new post at How to implement Push Notification in Xamarin with Firebase and Apple Push Notification with C# backend on using Firebase & Apple Push Notification. Thank you.
I have been reading https://learn.microsoft.com/en-us/appcenter/push/rest-api and looking over the Internet for example of how to implement this easily but found nothing useful.
I read and implemented this
https://www.andrewhoefling.com/Blog/Post/push-notifications-with-app-center-api-integration. His solution offers very good start, but incomplete.
So I enhanced Andrew Hoefling's solution from above to a full working version and thought it's good to share with fellows Xamarin members in the answer below.
public class AppCenterPush
{
User receiver = new User();
public AppCenterPush(Dictionary<Guid, string> dicInstallIdPlatform)
{
//Simply get all the Install IDs for the receipient with the platform name as the value
foreach(Guid key in dicInstallIdPlatform.Keys)
{
switch(dicInstallIdPlatform[key])
{
case "Android":
receiver.AndroidDevices.Add(key.ToString());
break;
case "iOS":
receiver.IOSDevices.Add(key.ToString());
break;
}
}
}
public class Constants
{
public const string Url = "https://api.appcenter.ms/v0.1/apps";
public const string ApiKeyName = "X-API-Token";
//Push required to use this. Go to https://learn.microsoft.com/en-us/appcenter/api-docs/index for instruction
public const string FullAccessToken = "{FULL ACCESS TOKEN}";
public const string DeviceTarget = "devices_target";
public class Apis { public const string Notification = "push/notifications"; }
//You can find your AppName and Organization/User name at your AppCenter URL as such https://appcenter.ms/users/{owner-name}/apps/{app-name}
public const string AppNameAndroid = "{APPNAME_ANDROID}";
public const string AppNameIOS = "{APPNAME_IOS}";
public const string Organization = "{ORG_OR_USER}";
}
[JsonObject]
public class Push
{
[JsonProperty("notification_target")]
public Target Target { get; set; }
[JsonProperty("notification_content")]
public Content Content { get; set; }
}
[JsonObject]
public class Content
{
public Content()
{
Name = "default"; //By default cannot be empty, must have at least 3 characters
}
[JsonProperty("name")]
public string Name { get; set; }
[JsonProperty("title")]
public string Title { get; set; }
[JsonProperty("body")]
public string Body { get; set; }
[JsonProperty("custom_data")]
public IDictionary<string, string> CustomData { get; set; }
}
[JsonObject]
public class Target
{
[JsonProperty("type")]
public string Type { get; set; }
[JsonProperty("devices")]
public IEnumerable Devices { get; set; }
}
public class User
{
public User()
{
IOSDevices = new List<string>();
AndroidDevices = new List<string>();
}
public List<string> IOSDevices { get; set; }
public List<string> AndroidDevices { get; set; }
}
public async Task<bool> Notify(string title, string message, Dictionary<string, string> customData = default(Dictionary<string, string>))
{
try
{
//title, message length cannot exceed 100 char
if (title.Length > 100)
title = title.Substring(0, 95) + "...";
if (message.Length > 100)
message = message.Substring(0, 95) + "...";
if (!receiver.IOSDevices.Any() && !receiver.AndroidDevices.Any())
return false; //No devices to send
//To make sure in Android, title and message is retain when click from notification. Else it's lost when app is in background
if (customData == null)
customData = new Dictionary<string, string>();
if (!customData.ContainsKey("Title"))
customData.Add("Title", title);
if (!customData.ContainsKey("Message"))
customData.Add("Message", message);
//custom data cannot exceed 100 char
foreach (string key in customData.Keys)
{
if(customData[key].Length > 100)
{
customData[key] = customData[key].Substring(0, 95) + "...";
}
}
var push = new Push
{
Content = new Content
{
Title = title,
Body = message,
CustomData = customData
},
Target = new Target
{
Type = Constants.DeviceTarget
}
};
HttpClient httpClient = new HttpClient();
//Set the content header to json and inject the token
httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
httpClient.DefaultRequestHeaders.Add(Constants.ApiKeyName, Constants.FullAccessToken);
//Needed to solve SSL/TLS issue when
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
if (receiver.IOSDevices.Any())
{
push.Target.Devices = receiver.IOSDevices;
string content = JsonConvert.SerializeObject(push);
HttpContent httpContent = new StringContent(content, Encoding.UTF8, "application/json");
string URL = $"{Constants.Url}/{Constants.Organization}/{Constants.AppNameiOS}/{Constants.Apis.Notification}";
var result = await httpClient.PostAsync(URL, httpContent);
}
if (receiver.AndroidDevices.Any())
{
push.Target.Devices = receiver.AndroidDevices;
string content = JsonConvert.SerializeObject(push);
HttpContent httpContent = new StringContent(content, Encoding.UTF8, "application/json");
string URL = $"{Constants.Url}/{Constants.Organization}/{Constants.AppNameAndroid}/{Constants.Apis.Notification}";
var result = await httpClient.PostAsync(URL, httpContent);
}
return true;
}
catch(Exception ex)
{
Console.WriteLine(ex.ToString());
return false;
}
}
}
To use this, simply do the following from your program
var receiptInstallID = new Dictionary<string, string>
{
{ "XXX-XXX-XXX-XXX", "Android" },
{ "YYY-YYY-YYY-YYY", "iOS" }
};
AppCenterPush appCenterPush = new AppCenterPush(receiptInstallID);
await appCenterPush.Notify("{YOUR_TITLE}", "{YOUR_MESSAGE}", null);
Can't add comment yet, but theres a typo in the above answer
string URL = $"{Constants.Url}/{Constants.Organization}/Constants.AppNameiOS}/{Constants.Apis.Notification}";
Should be
string URL = $"{Constants.Url}/{Constants.Organization}/{Constants.AppNameIOS}/{Constants.Apis.Notification}";
Missing { and IOS constant is capitalized.
Also, in your example to call it, Should be constructed as < guid, string >
var receiptInstallID = new Dictionary<Guid, string>
also needed as just FYI:
using Newtonsoft.Json;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
If you want to send notification for target user (user_ids_target),
public class AppCenterPush
{
User receiver = new User();
public AppCenterPush(Dictionary<string, string> dicInstallIdPlatform)
{
//Simply get all the Install IDs for the receipient with the platform name as the value
foreach (string key in dicInstallIdPlatform.Keys)
{
switch (dicInstallIdPlatform[key])
{
case "Android":
receiver.AndroidDevices.Add(key.ToString());
break;
case "iOS":
receiver.IOSDevices.Add(key.ToString());
break;
}
}
}
public class Constants
{
public const string Url = "https://api.appcenter.ms/v0.1/apps";
public const string ApiKeyName = "X-API-Token";
//Push required to use this. Go to https://learn.microsoft.com/en-us/appcenter/api-docs/index for instruction
public const string FullAccessToken = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
public const string DeviceTarget = "devices_target";
public const string UserTarget = "user_ids_target";
public class Apis { public const string Notification = "push/notifications"; }
//You can find your AppName and Organization/User name at your AppCenter URL as such https://appcenter.ms/users/{owner-name}/apps/{app-name}
public const string AppNameAndroid = "XXXXXX";
public const string AppNameIOS = "XXXXXX";
public const string Organization = "XXXXXXX";
}
[JsonObject]
public class Push
{
[JsonProperty("notification_target")]
public Target Target { get; set; }
[JsonProperty("notification_content")]
public Content Content { get; set; }
}
[JsonObject]
public class Content
{
public Content()
{
Name = "default"; //By default cannot be empty, must have at least 3 characters
}
[JsonProperty("name")]
public string Name { get; set; }
[JsonProperty("title")]
public string Title { get; set; }
[JsonProperty("body")]
public string Body { get; set; }
[JsonProperty("custom_data")]
public IDictionary<string, string> CustomData { get; set; }
}
[JsonObject]
public class Target
{
[JsonProperty("type")]
public string Type { get; set; }
[JsonProperty("user_ids")]
public IEnumerable Users { get; set; }
}
public class User
{
public User()
{
IOSDevices = new List<string>();
AndroidDevices = new List<string>();
}
public List<string> IOSDevices { get; set; }
public List<string> AndroidDevices { get; set; }
}
public async Task<bool> Notify(string title, string message, Dictionary<string, string> customData = default(Dictionary<string, string>))
{
try
{
//title, message length cannot exceed 100 char
if (title.Length > 100)
title = title.Substring(0, 95) + "...";
if (message.Length > 100)
message = message.Substring(0, 95) + "...";
if (!receiver.IOSDevices.Any() && !receiver.AndroidDevices.Any())
return false; //No devices to send
//To make sure in Android, title and message is retain when click from notification. Else it's lost when app is in background
if (customData == null)
customData = new Dictionary<string, string>();
if (!customData.ContainsKey("Title"))
customData.Add("Title", title);
if (!customData.ContainsKey("Message"))
customData.Add("Message", message);
//custom data cannot exceed 100 char
foreach (string key in customData.Keys)
{
if (customData[key].Length > 100)
{
customData[key] = customData[key].Substring(0, 95) + "...";
}
}
var push = new Push
{
Content = new Content
{
Title = title,
Body = message,
CustomData = customData
},
Target = new Target
{
Type = Constants.UserTarget
}
};
HttpClient httpClient = new HttpClient();
//Set the content header to json and inject the token
httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
httpClient.DefaultRequestHeaders.Add(Constants.ApiKeyName, Constants.FullAccessToken);
//Needed to solve SSL/TLS issue when
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
if (receiver.IOSDevices.Any())
{
push.Target.Users = receiver.IOSDevices;
string content = JsonConvert.SerializeObject(push);
HttpContent httpContent = new StringContent(content, Encoding.UTF8, "application/json");
string URL = $"{Constants.Url}/{Constants.Organization}/{Constants.AppNameIOS}/{Constants.Apis.Notification}";
var result = await httpClient.PostAsync(URL, httpContent);
}
if (receiver.AndroidDevices.Any())
{
push.Target.Users = receiver.AndroidDevices;
string content = JsonConvert.SerializeObject(push);
HttpContent httpContent = new StringContent(content, Encoding.UTF8, "application/json");
string URL = $"{Constants.Url}/{Constants.Organization}/{Constants.AppNameAndroid}/{Constants.Apis.Notification}";
var result = await httpClient.PostAsync(URL, httpContent);
}
return true;
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
return false;
}
}
}
After create a function for call it;
public async void PushNotification()
{
var receiptInstallID = new Dictionary<string, string>
{
{"17593989838", "Android" }
};
var customData = new Dictionary<string, string>
{
{"taskId", "1234" }
};
AppCenterPush appCenterPush = new AppCenterPush(receiptInstallID);
await appCenterPush.Notify("Hello", "How are you?", customData);
}
I'm trying to load a grid with json that I receive. This is my code in Home.cs:
private void getTickets()
{
try
{
string urlName = "tickets";
string method = "GET";
string json = null;
HttpStatusCode statusCode = HttpStatusCode.Forbidden;
Tickets data = null;
RestClient client = RequestClient.makeClient();
MakeRequest request = new MakeRequest(null, null, urlName, method);
IRestResponse response = client.Execute(request.exec());
statusCode = response.StatusCode;
json = response.Content;
var ticketWrapper = JsonConvert.DeserializeObject<TicketWrapper>(json);
if ((int)statusCode == 200)
{
gridTicket.DataSource = ticketWrapper.tickets;
}
else
{
MessageBox.Show("error");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
Ticket wrapper class
class TicketWrapper
{
public IEnumerable<Tickets> tickets { get; set; }
}
Tickets class
class Tickets
{
public int id;
public string title;
public string description;
public int user_id;
public int subject_id;
}
If I debug I can see that I receive the json but ticketWrapper is null what could be wrong here?
Debug image:
Try to change public fields in Ticket class to properties:
class Tickets
{
public int id { get; set; }
public string title { get; set; }
public string description { get; set; }
public int user_id { get; set; }
public int subject_id { get; set; }
}
Also I think that IEnumerable is not the best option for serialization. Try to use List in TicketWrapper.
Additionally move your break point down, because in current position ticketWrapper will be always null (expression has not yet been executed).
I’m trying to get Linq to twitter to work on a wp8 App, i’ve looked throughout the available documentation and was not able to figure this out, when trying the demos (which the author says works for wp8) i get errors.
Im using the ApplicationOnlyAuthorizer, my intention is just to be able to read the public tweets (not be able to log in and send tweets).
MainPage.cs
public MainPage()
{
this.InitializeComponent();
UserTweetsWidget = new UserTweetsViewModel("xxxxxxxx", 20);
this.DataContext = this;
}
TweetModel.cs
public class TweetModel
{
public string ScreenName { get; set; }
public string UserName { get; set; }
public string Image { get; set; }
public string Text { get; set; }
public string PublicationDate { get; set; }
}
UserTweetsViewModel.cs
public class UserTweetsViewModel
{
public string Label { get; set; }
public ObservableCollection<TweetModel> Tweets { get; set; }
private const string consumerKey = “xxxxxxx”;
private const string consumerSecret = “xxxxxx”;
private const string twitterAccessToken = “xxxxxxxxxxxxxxxxx”;
private const string twitterAccessTokenSecret = “xxxxxxxxxx”;
public UserTweetsViewModel(string userName, int count)
{
String _n= userName;
int _c= count;
InitializeAsync(_n, _c);
}
private async Task InitializeAsync(string userName, int count)
{
this.Label = string.Format("Tweets by #{0}", userName);
Tweets = await GetTwitterUserTimeLine(userName, count);
}
private async Task<ObservableCollection<TweetModel>> GetTwitterUserTimeLine(string userName, int count)
{
ObservableCollection<TweetModel> result = new ObservableCollection<TweetModel>();
var auth = new ApplicationOnlyAuthorizer
{
CredentialStore = new InMemoryCredentialStore
{
ConsumerKey = consumerKey,
ConsumerSecret = consumerSecret,
OAuthToken= twitterAccessToken,
OAuthTokenSecret= twitterAccessTokenSecret
}
};
await auth.AuthorizeAsync();
TwitterContext twitterCtx = new TwitterContext(auth);
var tweets = twitterCtx.Status.Where(tweet => tweet.ScreenName == userName && tweet.Type == StatusType.Home).Take(count).ToList();
foreach (var item in tweets)
{
TweetModel tweet = new TweetModel()
{
Text = item.Text,
ScreenName = item.User.Name,
UserName = "#" + item.ScreenName,
PublicationDate = Convert.ToString(item.CreatedAt),
Image = item.User.ProfileImageUrl
};
result.Add(tweet);
}
return result;
}
}
Thanks,
Bob
The problem, i think, is you aren't awaiting the AuthorizeAsync method.
First, you need to convert your GetTwitterUserTimeLine into an async method:
private async Task<ObservableCollection<TweetModel>> GetTwitterUserTimeLine(string userName, int count)
Then, you can call auth.AuthorizeAsync, awaiting the call:
await auth.AuthorizeAsync();
This way, the method waits until the authorization is completed, before continue execution.
UPDATE:
To call this method from your viewmodel, You can create a new method in the ViewModel, called InitializeAsync:
private async Task InitializeAsync()
In that method, call the GetTwitterUserTimeLine this way:
Tweets = await GetTwitterUserTimeLine(username, count);
Finally, you need to call the InitializeAsync Method from your viewmodel constructor, and it's going to work.
Hope this helps.