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  • Scribe-LinkedIn Search API

    - by Rupeshit
    Hi folks, I want to fetch data from the LinkedIn API for that I am using the Scribe library.All requests are giving me data as expected but when I tried two facet in the url then scribe is not able to get data from LinkedIn API. If I gave this URL : http://api.linkedin.com/v1/people-search?facets=location,network&facet=location,in:0 then it gives me proper result but if I entered this URL: http://api.linkedin.com/v1/people-search?facets=location,network&facet=location,in:0&facet=network,F i.e. URL containing multiple facets then it gives me this output: <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <error> <status>401</status> <timestamp>1292487039516</timestamp> <error-code>0</error-code> <message> [unauthorized].OAU:CiEgwWDkA5BFpNrc0RfGyVuSlOh4tig5kOTZ9q97qcXNrFl7zqk- Ts7DqRGaKDCV|94f13544-9844-41eb-9d53-8fe36535bbc3|*01|*01:1292487039:VseHXaJXM2gerxJyn6kHhIka7zw=</message> </error> Any kind of help to solve this will be appreciated.Thanks.

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  • Calling ASP.NET Web API using JQuery ajax - cross site scripting issue

    - by SimonF
    I have a Web API which I am calling using the JQuery ajax function. When I test the service directly (using the Chrome RESTEasy extension) it works fine, however when I call it using the JQuery ajax function I get an error. I'm calling it on port 81: $.ajax({ url: "http://127.0.0.1:81/api/people", data: JSON.stringify(personToCreate), type: "POST", contentType: "application/json;charset=utf-8", statusCode: { 201: function (newPerson) { callback(newPerson); } }, success: function (newPerson) { alert("New person created with an Id of " + newPerson.Id); }, error: function (jqXHR, textStatus, errorThrown) { alert('Error. '+textStatus+'. '+errorThrown); } }); ...but when I trace it using FireBug Lite the response comes from port 82: {"Message":"No HTTP resource was found that matches the request URI 'http://127.0.0.1:82/api/people'.","MessageDetail":"No action was found on the controller 'People' that matches the request."} I think the error is, effectively, due to cross-site scripting being blocked, but I'm not actually cross-site scripting, if you see what I mean. Has anyone else come across this and been able to fix it? Edit: Routing config (global.asax.vb) is: RouteTable.Routes.MapHttpRoute(name:="DefaultApi", routeTemplate:="api/{controller}/{id}", defaults:=New With {Key .id = System.Web.Http.RouteParameter.Optional}) Controller: Public Function PostValue(ByVal departmentid As Integer, ByVal emailaddress As String, ByVal firstname As String, ByVal lastname As String) As Guid Dim context As New WSMModelDataContext Dim bllPeople As New PeopleBLL(context) Return bllPeople.Create(firstname, lastname, emailaddress, departmentid) End Function When I debug it, it doesn't get as far as running the controller, although when calling it through RESTEasy it routes correctly and the controller executes successfully. The only difference seemes to be that wen called through RESTEasy it is (correctly) using http://127.0.0.1:81 but for some reason when called via JQuery/ajax it seems to be using http://127.0.0.1:82.

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  • Creating an API for an ASP.NET MVC site with rate-limiting and caching

    - by Maxim Z.
    Recently, I've been very interested in APIs, specifically in how to create them. For the purpose of this question, let's say that I have created an ASP.NET MVC site that has some data on it; I want to create an API for this site. I have multiple questions about this: What type of API should I create? I know that REST and oData APIs are very popular. What are the pros and cons of each, and how do I implement them? From what I understand so far, REST APIs with ASP.NET MVC would just be actions that return JSON instead of Views, and oData APIs are documented here. How do I handle writing? Reading from both API types is quite simple. However, writing is more complex. With the REST approach, I understand that I can use HTTP POST, but how do I implement authentication? Also, with oData, how does writing work in the first place? How do I implement basic rate-limiting and caching? From my past experience with APIs, these are very important things, so that the API server isn't overloaded. What's the best way to set these two things up? Can I get some sample code? Any code that relates to C# and ASP.NET MVC would be appreciated. Thanks in advance! While this is a broad question, I think it's not too broad... :) There are some similar questions to this one that are about APIs, but I haven't found any that directly address the questions I outlined here.

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  • Bug: files uploaded via desktop or web client have hidden tag when listed via API

    - by Jon Webb
    Files uploaded to Google Drive sometimes incorrectly have a hidden tag when listed via the Document List v3 REST API: <category scheme='http://schemas.google.com/g/2005/labels' term='http://schemas.google.com/g/2005/labels#hidden' label='hidden'/> This happens if: a subfolder is created via the Google Drive desktop client and files are copied in, or a folder is uploaded via the Google Drive web client. The folder does not have the hidden tag, but the files that were uploaded do. The files do not have this tag if: they are individually uploaded via the Google Drive web client to the subfolder, or they are uploaded via the REST API to the subfolder, or they are uploaded via the desktop client to the My Drive root. The files and folders show up in Google Drive whether they have the hidden tag or not. We're using the API with the following scope: https://docs.google.com/feeds/ https://spreadsheets.google.com/feeds/ https://docs.googleusercontent.com/ I have verified and can recreate this with the OAuth 2.0 playground. Google Drive desktop client version 1.3.3209.2600 on Win7 32-bit I guess these must be bugs in the API...

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  • Subscribe through API .net C#

    - by Younes
    I have to submit subscription data to another website. I have got documentation on how to use this API however i'm not 100% sure of how to set this up. I do have all the information needed, like username / passwords etc. This is the API documentation: https://www.apiemail.net/api/documentation/?SID=4 How would my request / post / whatever look like in C# .net (vs 2008) when i'm trying to acces this API? This is what i have now, I think i'm not on the right track: public static string GArequestResponseHelper(string url, string token, string username, string password) { HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url); myRequest.Headers.Add("Username: " + username); myRequest.Headers.Add("Password: " + password); HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse(); Stream responseBody = myResponse.GetResponseStream(); Encoding encode = System.Text.Encoding.GetEncoding("utf-8"); StreamReader readStream = new StreamReader(responseBody, encode); //return string itself (easier to work with) return readStream.ReadToEnd(); Hope someone knows how to set this up properly. Thx!

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  • Custom API requirement

    - by Jonathan.Peppers
    We are currently working on an API for an existing system. It basically wraps some web-requests as an easy-to-use library that 3rd party companies should be able to use with our product. As part of the API, there is an event mechanism where the server can call back to the client via a constantly-running socket connection. To minimize load on the server, we want to only have one connection per computer. Currently there is a socket open per process, and that could eventually cause load problems if you had multiple applications using the API. So my question is: if we want to deploy our API as a single standalone assembly, what is the best way to fix our problem? A couple options we thought of: Write an out of process COM object (don't know if that works in .Net) Include a second exe file that would be required for events, it would have to single-instance itself, and open a named pipe or something to communicate through multiple processes Extract this exe file from an embedded resource and execute it None of those really seem ideal. Any better ideas?

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  • Sending a file to an API - C#

    - by alex
    I'm trying to use an API which sends a fax. I have a PHP example below: (I will be using C# however) <?php //This is example code to send a FAX from the command line using the Simwood API //It is illustrative only and should not be used without the addition of error checking etc. $ch = curl_init("http://url-to-api-endpoint"); $fax_variables=array( 'user'=> 'test', 'password'=> 'test', 'sendat' => '2050-01-01 01:00', 'priority'=> 10, 'output'=> 'json', 'to[0]' => '44123456789', 'to[1]' => '44123456780', 'file[0]'=>'@/tmp/myfirstfile.pdf', 'file[1]' => '@/tmp/mysecondfile.pdf' ); print_r($fax_variables); curl_setopt ($ch, CURLOPT_POST, 1); curl_setopt ($ch, CURLOPT_POSTFIELDS, $fax_variables); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $result=curl_exec ($ch); $info = curl_getinfo($ch); $result['http_code']; curl_close ($ch); print_r($result); ?> My question is - in the C# world, how would I achieve the same result? Do i need to build a post request? Ideally, i was trying to do this using REST - and constructing a URL, and using HttpWebRequest (GET) to call the API

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  • Webpage shared with like button not showing in users timeline

    - by einar
    I have a single pages and a one page that lists all of the single pages. On the overview page you can like each single page with their url. And of corse you can do the same when you are viewing a single page. My issue is very strange. Most of the pages that I would like show up on my timeline. But then there are some that don't show after I click like, not even if I click on "Post to Facebook". This page will not show in a users timeline if liked ore "Post'ed to Facebook". http://www.inspiredbyiceland.com/inspiration/iceland-airwaves/valdimar/ But this one will http://www.inspiredbyiceland.com/inspiration/iceland-airwaves/snorri-helgason/ But these pages are excls the same, they use the same template so the code should not be any different, and in fact I cant see any differents between these pages that could be causing this kind of problem. You can view the overview page here http://www.inspiredbyiceland.com/inspiration/iceland-airwaves/ . Most of the single pages work fine and show up on users timeline. Most of the content on the site works fine so far as I know. There is an Facebook application defined on the page. I'm not sure if that is related to this problem.

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  • 'send' button error 401

    - by jjd
    I'm having a strange error with 'Send' button I have the following code on my page <div id="fb-root"></div> <script type="text/javascript"> (function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/en_US/all.js#xfbml=1&amp;appId=<myAppId>"; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk')); </script> <br/> <fb:like send="true" width="450" show_faces="true"></fb:like> The 'send' button works fine if I access the application via IP address, but if I use a domain name, Facebook returns The page at http://<...>.com:8080/pages/question.jsf could not be reached because the server returned status code 401. Meantime 'like' button works fine. The application front-end is built with JSF2+Primefaces. Any ideas would be appreciated Thanks

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  • Some questions about dotnetopenauth

    - by chobo2
    Hi I have a couple outstanding questions mainly reguarding twitter and facebook In the FacebookGraph class there are properties such as Id,name,etc. I am wondering how do I add to this list? Like what happens if I want a users hometown? I tried to add a property called hometown but it always is null. What should I store their id(1418) or the whole url(http://www.facebook.com/profile.php?id=1418) for lookup later in my db to grab their data and to see if they have an account with my site? Is it actually good to use this id as it seems like it is common knowledge. Can't someone just find the profile id or whatever and do a fake request on my site? how do you setup dotnetopenauth to deal with the case when a user goes to facebook and deletes access to my website. I know you can send a deauthorization code to your site and then delete their account but I don't know how to do that through dotnetopenauth Twitter Is it possible to do number 4 with twitter? Ajax Is it possible to make the openid stuff ajax? I don't see a sample anywhere in the dotnetopenauth samples.

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  • call FB.login() after FB.init() automatically

    - by Tobi Projectx
    i`m developing an app for Facebook. My Code: function init() { window.fbAsyncInit = function() { var appID = 'xxxxxxxxxxxxxxxxxxxxxxxxxx'; FB.init({ appId: appID, status: true, cookie: true, xfbml: true}); login(); }; (function() { var e = document.createElement("script"); e.async = true; e.src = "https://connect.facebook.net/en_US/all.js?xfbml=1"; document.getElementById("fb-root").appendChild(e); }()); }; function login() { FB.login(function(response) { if (response.session) { if (response.perms) { // user is logged in and granted some permissions. // perms is a comma separated list of granted permissions } else { // user is logged in, but did not grant any permissions } } else { // user is not logged in } }, {perms:'read_stream,publish_stream,offline_access'}); }; I want to call the "init" function and after "init" should call the "login" function (open up the Facebook Login Window) automatically. But i always get "b is null" FB.provide('',{ui:function(f,b){if(!f....onent(FB.UIServer._resultToken));}}); Error in Firebug. Can anybody help me? Does anybody have the same problem? Thanks

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  • facebook app using fbml displays nothing

    - by fusion
    i've made an app in php and html and trying to integrate it with fb. the app on my website is using jquery, but knowing that fbml doesn't support jquery, i've tried to instead use fbjqry. this doesn't work either. i'm not sure where i'm going wrong. /////////////// index.php: <?php // Copyright 2007 Facebook Corp. All Rights Reserved. require_once 'config_fb.php'; //***** Greet the currently logged-in user! echo "<p>Hello, <fb:name uid=\"$user_id\" useyou=\"false\" />!</p>"; include 'quote.html'; ?> ///////////////// quote.html: <!DOCTYPE html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <link rel="stylesheet" type="text/css" href="css/jquote.css" /> <!--<script type="text/javascript" src="scripts/jquery-1.4.2.js"></script>--> <script type="text/javascript" src="fbjqry/utility.js"></script> <script type="text/javascript" src="fbjqry/fjqry.js"></script> <script type="text/javascript"> // On page load, fill the box with content. $(document).ready(function() { $("#quoteContainer").load("quote.php"); }); var auto_refresh = setInterval( function () { $('#quoteContainer').load('quote.php'); }, 5000); // refresh every 10000 milliseconds </script> </head> <div id="wrapper"> <div class="header">&nbsp;Quote of the Day</div> <div id="quoteContainer"> </div> </div> </html> //// from the above file it should take quotes from quote.php and display it, but it doesn't display anything. it seems as though it isn't reading from the quote.php file. is the command of fbjqry different from jquery? if i use iframes instead of fbml, everything loads correctly except that i'd like tab/profile box for this app, which iframes doesn't have.

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  • Which approach would lead to an API that is easier to use?

    - by Clem
    I'm writing a JavaScript API and for a particular case, I'm wondering which approach is the sexiest. Let's take an example: writing a VideoPlayer, I add a getCurrentTime method which gives the elapsed time since the start. The first approach simply declares getCurrentTime as follows: getCurrentTime():number where number is the native number type. This approach includes a CURRENT_TIME_CHANGED event so that API users can add callbacks to be aware of time changes. Listening to this event would look like the following: myVideoPlayer.addEventListener(CURRENT_TIME_CHANGED, function(evt){ console.log ("current time = "+evt.getDispatcher().getCurrentTime()); }); The second approach declares getCurrentTime differently: getCurrentTime():CustomNumber where CustomNumber is a custom number object, not the native one. This custom object dispatches a VALUE_CHANGED event when its value changes, so there is no need for the CURRENT_TIME_CHANGED event! Just listen to the returned object for value changes! Listening to this event would look like the following: myVideoPlayer.getCurrentTime().addEventListener(VALUE_CHANGED, function(evt){ console.log ("current time = "+evt.getDispatcher().valueOf()); }); Note that CustomNumber has a valueOf method which returns a native number that lets the returned CustomNumber object being used as a number, so: var result = myVideoPlayer.getCurrentTime()+5; will work! So in the first approach, we listen to an object for a change in its property's value. In the second one we directly listen to the property for a change on its value. There are multiple pros and cons for each approach, I just want to know which one the developers would prefer to use!

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  • Using JSON.NET for dynamic JSON parsing

    - by Rick Strahl
    With the release of ASP.NET Web API as part of .NET 4.5 and MVC 4.0, JSON.NET has effectively pushed out the .NET native serializers to become the default serializer for Web API. JSON.NET is vastly more flexible than the built in DataContractJsonSerializer or the older JavaScript serializer. The DataContractSerializer in particular has been very problematic in the past because it can't deal with untyped objects for serialization - like values of type object, or anonymous types which are quite common these days. The JavaScript Serializer that came before it actually does support non-typed objects for serialization but it can't do anything with untyped data coming in from JavaScript and it's overall model of extensibility was pretty limited (JavaScript Serializer is what MVC uses for JSON responses). JSON.NET provides a robust JSON serializer that has both high level and low level components, supports binary JSON, JSON contracts, Xml to JSON conversion, LINQ to JSON and many, many more features than either of the built in serializers. ASP.NET Web API now uses JSON.NET as its default serializer and is now pulled in as a NuGet dependency into Web API projects, which is great. Dynamic JSON Parsing One of the features that I think is getting ever more important is the ability to serialize and deserialize arbitrary JSON content dynamically - that is without mapping the JSON captured directly into a .NET type as DataContractSerializer or the JavaScript Serializers do. Sometimes it isn't possible to map types due to the differences in languages (think collections, dictionaries etc), and other times you simply don't have the structures in place or don't want to create them to actually import the data. If this topic sounds familiar - you're right! I wrote about dynamic JSON parsing a few months back before JSON.NET was added to Web API and when Web API and the System.Net HttpClient libraries included the System.Json classes like JsonObject and JsonArray. With the inclusion of JSON.NET in Web API these classes are now obsolete and didn't ship with Web API or the client libraries. I re-linked my original post to this one. In this post I'll discus JToken, JObject and JArray which are the dynamic JSON objects that make it very easy to create and retrieve JSON content on the fly without underlying types. Why Dynamic JSON? So, why Dynamic JSON parsing rather than strongly typed parsing? Since applications are interacting more and more with third party services it becomes ever more important to have easy access to those services with easy JSON parsing. Sometimes it just makes lot of sense to pull just a small amount of data out of large JSON document received from a service, because the third party service isn't directly related to your application's logic most of the time - and it makes little sense to map the entire service structure in your application. For example, recently I worked with the Google Maps Places API to return information about businesses close to me (or rather the app's) location. The Google API returns a ton of information that my application had no interest in - all I needed was few values out of the data. Dynamic JSON parsing makes it possible to map this data, without having to map the entire API to a C# data structure. Instead I could pull out the three or four values I needed from the API and directly store it on my business entities that needed to receive the data - no need to map the entire Maps API structure. Getting JSON.NET The easiest way to use JSON.NET is to grab it via NuGet and add it as a reference to your project. You can add it to your project with: PM> Install-Package Newtonsoft.Json From the Package Manager Console or by using Manage NuGet Packages in your project References. As mentioned if you're using ASP.NET Web API or MVC 4 JSON.NET will be automatically added to your project. Alternately you can also go to the CodePlex site and download the latest version including source code: http://json.codeplex.com/ Creating JSON on the fly with JObject and JArray Let's start with creating some JSON on the fly. It's super easy to create a dynamic object structure with any of the JToken derived JSON.NET objects. The most common JToken derived classes you are likely to use are JObject and JArray. JToken implements IDynamicMetaProvider and so uses the dynamic  keyword extensively to make it intuitive to create object structures and turn them into JSON via dynamic object syntax. Here's an example of creating a music album structure with child songs using JObject for the base object and songs and JArray for the actual collection of songs:[TestMethod] public void JObjectOutputTest() { // strong typed instance var jsonObject = new JObject(); // you can explicitly add values here using class interface jsonObject.Add("Entered", DateTime.Now); // or cast to dynamic to dynamically add/read properties dynamic album = jsonObject; album.AlbumName = "Dirty Deeds Done Dirt Cheap"; album.Artist = "AC/DC"; album.YearReleased = 1976; album.Songs = new JArray() as dynamic; dynamic song = new JObject(); song.SongName = "Dirty Deeds Done Dirt Cheap"; song.SongLength = "4:11"; album.Songs.Add(song); song = new JObject(); song.SongName = "Love at First Feel"; song.SongLength = "3:10"; album.Songs.Add(song); Console.WriteLine(album.ToString()); } This produces a complete JSON structure: { "Entered": "2012-08-18T13:26:37.7137482-10:00", "AlbumName": "Dirty Deeds Done Dirt Cheap", "Artist": "AC/DC", "YearReleased": 1976, "Songs": [ { "SongName": "Dirty Deeds Done Dirt Cheap", "SongLength": "4:11" }, { "SongName": "Love at First Feel", "SongLength": "3:10" } ] } Notice that JSON.NET does a nice job formatting the JSON, so it's easy to read and paste into blog posts :-). JSON.NET includes a bunch of configuration options that control how JSON is generated. Typically the defaults are just fine, but you can override with the JsonSettings object for most operations. The important thing about this code is that there's no explicit type used for holding the values to serialize to JSON. Rather the JSON.NET objects are the containers that receive the data as I build up my JSON structure dynamically, simply by adding properties. This means this code can be entirely driven at runtime without compile time restraints of structure for the JSON output. Here I use JObject to create a album 'object' and immediately cast it to dynamic. JObject() is kind of similar in behavior to ExpandoObject in that it allows you to add properties by simply assigning to them. Internally, JObject values are stored in pseudo collections of key value pairs that are exposed as properties through the IDynamicMetaObject interface exposed in JSON.NET's JToken base class. For objects the syntax is very clean - you add simple typed values as properties. For objects and arrays you have to explicitly create new JObject or JArray, cast them to dynamic and then add properties and items to them. Always remember though these values are dynamic - which means no Intellisense and no compiler type checking. It's up to you to ensure that the names and values you create are accessed consistently and without typos in your code. Note that you can also access the JObject instance directly (not as dynamic) and get access to the underlying JObject type. This means you can assign properties by string, which can be useful for fully data driven JSON generation from other structures. Below you can see both styles of access next to each other:// strong type instance var jsonObject = new JObject(); // you can explicitly add values here jsonObject.Add("Entered", DateTime.Now); // expando style instance you can just 'use' properties dynamic album = jsonObject; album.AlbumName = "Dirty Deeds Done Dirt Cheap"; JContainer (the base class for JObject and JArray) is a collection so you can also iterate over the properties at runtime easily:foreach (var item in jsonObject) { Console.WriteLine(item.Key + " " + item.Value.ToString()); } The functionality of the JSON objects are very similar to .NET's ExpandObject and if you used it before, you're already familiar with how the dynamic interfaces to the JSON objects works. Importing JSON with JObject.Parse() and JArray.Parse() The JValue structure supports importing JSON via the Parse() and Load() methods which can read JSON data from a string or various streams respectively. Essentially JValue includes the core JSON parsing to turn a JSON string into a collection of JsonValue objects that can be then referenced using familiar dynamic object syntax. Here's a simple example:public void JValueParsingTest() { var jsonString = @"{""Name"":""Rick"",""Company"":""West Wind"", ""Entered"":""2012-03-16T00:03:33.245-10:00""}"; dynamic json = JValue.Parse(jsonString); // values require casting string name = json.Name; string company = json.Company; DateTime entered = json.Entered; Assert.AreEqual(name, "Rick"); Assert.AreEqual(company, "West Wind"); } The JSON string represents an object with three properties which is parsed into a JObject class and cast to dynamic. Once cast to dynamic I can then go ahead and access the object using familiar object syntax. Note that the actual values - json.Name, json.Company, json.Entered - are actually of type JToken and I have to cast them to their appropriate types first before I can do type comparisons as in the Asserts at the end of the test method. This is required because of the way that dynamic types work which can't determine the type based on the method signature of the Assert.AreEqual(object,object) method. I have to either assign the dynamic value to a variable as I did above, or explicitly cast ( (string) json.Name) in the actual method call. The JSON structure can be much more complex than this simple example. Here's another example of an array of albums serialized to JSON and then parsed through with JsonValue():[TestMethod] public void JsonArrayParsingTest() { var jsonString = @"[ { ""Id"": ""b3ec4e5c"", ""AlbumName"": ""Dirty Deeds Done Dirt Cheap"", ""Artist"": ""AC/DC"", ""YearReleased"": 1976, ""Entered"": ""2012-03-16T00:13:12.2810521-10:00"", ""AlbumImageUrl"": ""http://ecx.images-amazon.com/images/I/61kTaH-uZBL._AA115_.jpg"", ""AmazonUrl"": ""http://www.amazon.com/gp/product/…ASIN=B00008BXJ4"", ""Songs"": [ { ""AlbumId"": ""b3ec4e5c"", ""SongName"": ""Dirty Deeds Done Dirt Cheap"", ""SongLength"": ""4:11"" }, { ""AlbumId"": ""b3ec4e5c"", ""SongName"": ""Love at First Feel"", ""SongLength"": ""3:10"" }, { ""AlbumId"": ""b3ec4e5c"", ""SongName"": ""Big Balls"", ""SongLength"": ""2:38"" } ] }, { ""Id"": ""7b919432"", ""AlbumName"": ""End of the Silence"", ""Artist"": ""Henry Rollins Band"", ""YearReleased"": 1992, ""Entered"": ""2012-03-16T00:13:12.2800521-10:00"", ""AlbumImageUrl"": ""http://ecx.images-amazon.com/images/I/51FO3rb1tuL._SL160_AA160_.jpg"", ""AmazonUrl"": ""http://www.amazon.com/End-Silence-Rollins-Band/dp/B0000040OX/ref=sr_1_5?ie=UTF8&qid=1302232195&sr=8-5"", ""Songs"": [ { ""AlbumId"": ""7b919432"", ""SongName"": ""Low Self Opinion"", ""SongLength"": ""5:24"" }, { ""AlbumId"": ""7b919432"", ""SongName"": ""Grip"", ""SongLength"": ""4:51"" } ] } ]"; JArray jsonVal = JArray.Parse(jsonString) as JArray; dynamic albums = jsonVal; foreach (dynamic album in albums) { Console.WriteLine(album.AlbumName + " (" + album.YearReleased.ToString() + ")"); foreach (dynamic song in album.Songs) { Console.WriteLine("\t" + song.SongName); } } Console.WriteLine(albums[0].AlbumName); Console.WriteLine(albums[0].Songs[1].SongName); } JObject and JArray in ASP.NET Web API Of course these types also work in ASP.NET Web API controller methods. If you want you can accept parameters using these object or return them back to the server. The following contrived example receives dynamic JSON input, and then creates a new dynamic JSON object and returns it based on data from the first:[HttpPost] public JObject PostAlbumJObject(JObject jAlbum) { // dynamic input from inbound JSON dynamic album = jAlbum; // create a new JSON object to write out dynamic newAlbum = new JObject(); // Create properties on the new instance // with values from the first newAlbum.AlbumName = album.AlbumName + " New"; newAlbum.NewProperty = "something new"; newAlbum.Songs = new JArray(); foreach (dynamic song in album.Songs) { song.SongName = song.SongName + " New"; newAlbum.Songs.Add(song); } return newAlbum; } The raw POST request to the server looks something like this: POST http://localhost/aspnetwebapi/samples/PostAlbumJObject HTTP/1.1User-Agent: FiddlerContent-type: application/jsonHost: localhostContent-Length: 88 {AlbumName: "Dirty Deeds",Songs:[ { SongName: "Problem Child"},{ SongName: "Squealer"}]} and the output that comes back looks like this: {  "AlbumName": "Dirty Deeds New",  "NewProperty": "something new",  "Songs": [    {      "SongName": "Problem Child New"    },    {      "SongName": "Squealer New"    }  ]} The original values are echoed back with something extra appended to demonstrate that we're working with a new object. When you receive or return a JObject, JValue, JToken or JArray instance in a Web API method, Web API ignores normal content negotiation and assumes your content is going to be received and returned as JSON, so effectively the parameter and result type explicitly determines the input and output format which is nice. Dynamic to Strong Type Mapping You can also map JObject and JArray instances to a strongly typed object, so you can mix dynamic and static typing in the same piece of code. Using the 2 Album jsonString shown earlier, the code below takes an array of albums and picks out only a single album and casts that album to a static Album instance.[TestMethod] public void JsonParseToStrongTypeTest() { JArray albums = JArray.Parse(jsonString) as JArray; // pick out one album JObject jalbum = albums[0] as JObject; // Copy to a static Album instance Album album = jalbum.ToObject<Album>(); Assert.IsNotNull(album); Assert.AreEqual(album.AlbumName,jalbum.Value<string>("AlbumName")); Assert.IsTrue(album.Songs.Count > 0); } This is pretty damn useful for the scenario I mentioned earlier - you can read a large chunk of JSON and dynamically walk the property hierarchy down to the item you want to access, and then either access the specific item dynamically (as shown earlier) or map a part of the JSON to a strongly typed object. That's very powerful if you think about it - it leaves you in total control to decide what's dynamic and what's static. Strongly typed JSON Parsing With all this talk of dynamic let's not forget that JSON.NET of course also does strongly typed serialization which is drop dead easy. Here's a simple example on how to serialize and deserialize an object with JSON.NET:[TestMethod] public void StronglyTypedSerializationTest() { // Demonstrate deserialization from a raw string var album = new Album() { AlbumName = "Dirty Deeds Done Dirt Cheap", Artist = "AC/DC", Entered = DateTime.Now, YearReleased = 1976, Songs = new List<Song>() { new Song() { SongName = "Dirty Deeds Done Dirt Cheap", SongLength = "4:11" }, new Song() { SongName = "Love at First Feel", SongLength = "3:10" } } }; // serialize to string string json2 = JsonConvert.SerializeObject(album,Formatting.Indented); Console.WriteLine(json2); // make sure we can serialize back var album2 = JsonConvert.DeserializeObject<Album>(json2); Assert.IsNotNull(album2); Assert.IsTrue(album2.AlbumName == "Dirty Deeds Done Dirt Cheap"); Assert.IsTrue(album2.Songs.Count == 2); } JsonConvert is a high level static class that wraps lower level functionality, but you can also use the JsonSerializer class, which allows you to serialize/parse to and from streams. It's a little more work, but gives you a bit more control. The functionality available is easy to discover with Intellisense, and that's good because there's not a lot in the way of documentation that's actually useful. Summary JSON.NET is a pretty complete JSON implementation with lots of different choices for JSON parsing from dynamic parsing to static serialization, to complex querying of JSON objects using LINQ. It's good to see this open source library getting integrated into .NET, and pushing out the old and tired stock .NET parsers so that we finally have a bit more flexibility - and extensibility - in our JSON parsing. Good to go! Resources Sample Test Project http://json.codeplex.com/© Rick Strahl, West Wind Technologies, 2005-2012Posted in .NET  Web Api  AJAX   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • URL routing similar to Facebook (related to AJAX and the URL)

    - by Guilherme Cardoso
    In this article i'm gonna show you how i do when i have to update some content with AJAX and i have to change the URL. First, let's see an example to understand it better. If the user is reading a News with Id 1 and he clicked on another News with Id 2, if we update the content with AJAX the user is now reading the News Id 2 but the URL remains the same, for example: http://localhost/News/Read/1 Now let's see another example from Facebook. If i'm reading my profile and i click on Photos, Facebook updates it with AJAX and the URL switch to: http://www.facebook.com/guilhermegeek#!/guilhermegeek?sk=photos If we enter on that URL, it's mapped to: http://www.facebook.com/guilhermegeek?sk=photos The trick here is the parameters that we use after the #!. Those parameters are never sent to the server side, so we handle them on the client side (javascript).In the example of Facebook, he receives my profile name (guilhermegeek) and the action is to read photos. A few time ago i've written an article in my Portuguese blog explaining how to use an alternative to clients with javascript disabled. Like this: <a onclick="javascript:ReadNews(id);" href="#!News/Read/@id/">Title</a> When the user enter the link of that news, my function Read(); fills the News in the page. Then, i add the #!News/Read/@id/ to my URL. It's gonna stay something like this: http://localhost/News/Read/1#!News/Read/2 As i explained before, the News that the user is reading has the Id 2.The next step is to use javascript to check if the URL that the user typed has other News Id, because if we enter on the above URL our controller will get the Id 1 (everything after to the # isn't sent to the server side). $(document).ready(function () {             var h = window.location.hash;             if (h != null) {                 var parts = window.location.href.split('#!');                 if (parts.length > 1) {                     window.location.replace("http://localhost/" + parts[1]);                 }             }    }); It's pretty simple. I'm cutting everything after the #!, then i redirect the user to a new page. So, it's gonna stay:http://localhost/News/Read/2

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  • Watch 53rd Grammy Awards 2011 Live Stream & Follow The Event On Facebook & Twitter

    - by Gopinath
    Grammy Awards is the biggest music awards ceremony that honours music genres. The 53rd Grammy Awards function will be held on February 13, 2011 at Staples Center in Los Angeles. The star studded musical event will be telecasted live on CBS TV between 8pm ET until 11:30pm ET. Behind The Scenes Live Stream On YouTube and Grammy.com Grammy, YouTube and TurboTax has teamed up to provide live stream of behind the scene coverage of key events starting at 5pm Feb 11th and runs through February 13th. Note that this stream will not broadcast the 3 hour long award presentation. Kind of bad, except the award presentation rest of the ceremony is streamed here.  The video stream is embedded below Catch live behind-the-scenes coverage of key events during GRAMMY week. Before the show, you can watch the Nominees Reception, Clive Davis Pre-GRAMMY Gala, the red carpet and the pre-telecast ceremony. During the show, go backstage to see the winners after they accept their award! You can catch the same stream on Grammys’s YouTube channel as well as on Grammy.com website Follow Grammy Awards On Facebook & Twitter The Grammy Awards has an official Facebook and Twitter account and you can follow them for all the latest information The Grammy’s Facebook Page The Grammy’s Twitter Page Grammy Live Streaming on UStream & Justin.tv Even though there is no official source that stream live of The Grammy Awards presentation ceremony, there will be plenty of unofficial sources on UStream and Justin.tv. So search UStream and Justin.tv for live streaming of The Grammy’s. TV Channels Telecasting The Grammy Awards 2011 Here is the list of TV channels in various countries offering live telecast of The Grammy Awards 2011. We keep updating this section as and when we get more information USA – CBS Television Network  – February 13, 2011 India – VH1 TV – February 14  2011 , 6:30 AM United Kingdom – ITV2  – 16 February 2011, 10:00PM – 12:00AM This article titled,Watch 53rd Grammy Awards 2011 Live Stream & Follow The Event On Facebook & Twitter, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • Open Financial Exchange (OFX) Banking API

    - by Gabriel Susai
    Hi, First of all I apologize if this question is asked before. I am planning to develop a small application which displays my bank account details(like Mint.com) where I can customize the display of my own. I want to know how and where to start. Where these OFX API's are available? Are they free or we need to pay and get access to those API? What is data format ( xml, xml/atom, json) ? Any article or document to understand this requirement and start developing? Any open source software where I can download the code and customize it? FYI : I am working on C#.Net. Any help would be appreciated. Edit : Mark : Thanks for you info. If I want to develop a application like Mint.com what are the other companies provide API's other than Yoodlee? Also any idea on the pricing? Thanks Gabriel Susai

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  • Google Search api for Android systems

    - by jrharshath
    Hi, I'm trying to build an android app that would do a local search on google. I know there is a Google Search API for Java, and I am able to use it for a desktop application. However, when I use the same jar file (gsearch.jar) in my android project, Some problems arise. When I call the .localSearch() method of my gsearch.Client object, a runtime error is occurring. The error message is: "java.lang.VerifyError: gsearch.Client". This message is occurring in the Dalvik Debug Monitor log. So what is the problem here? Can I not use the search API on the android? More importantly, how do I do a local search from an android app? Does the android sdk have search APIs inbuilt? I could only find the Maps api, and Map search is not what I'm looking for.. Thanks for the help, jrh

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  • Song search and stream preview API

    - by teepusink
    Hi, Is there an API where I can search for a song, and then stream the preview of the song on my site? Looked into Amazon MP3, but I can't seem to find an API for Amazon MP3. Also looked into last.fm Track.Search api, but seems like the return value doesn't seem to give the actual filename. (i.e mp3 etc), which means I can't stream it on my site. Please let me know if there are other different APIs I can use as well. Thanks, Tee

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  • Map API with Building Elevation Data

    - by Laserallan
    Hi! I'm looking for a map API where I can get detailed elevation for points. I'm not looking elevation differences for certain paths along roads on the map but actual building heights. Getting the the 3d meshes for buildings would also be fine since I can compute the height myself using that information. Does any of the map API's out there support giving out this kind of information? EDIT: Free API's are preferred but if that's not an option I'd like to hear about non free alternatives as well.

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  • Admob ads will not display when placed inside a tabview

    - by smith324
    I've been trying to get my ads to display in this type of layout. Tabs - LinearLayout - ListView - header. The header is set via addHeaderView and is displaying normally. If I were to move the ads anywhere else they display normally (so its not a setup issue). Using ads in the header of a listview works fine in my other projects. So this seems to be a very specific problem, the ads simply refuse to display when placed in the header of a listview inside a tabhost. My logs show no activity from admob at all. There is either a bug here or limitation of the sdk. Does anyone have any experience or insight into this issue? EDIT I found the solution. It actually had to do with padding that was in the root of my Tabview. For more checkout my answer here

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