I didn&#39;t look into it&#39;s internals (source code link is broken), but in general [DotNetOpenAuth][1] seems to be quite professional. 

Update: OAuth 2 and OpenID are now supported as well. 

  [1]: http://www.dotnetopenauth.net/

You should look on [OAuth2][1]. It is .NET implementation of OAuth 1.0 and OAuth 2.0 protocol for most of the popular providers:

 - google
 - facebook
 - twitter
 - foursquare
 - instagram
 - linked-in
 - windows live
 - vkontakte
 - odnoklassniki
 - yandex
 - mail.ru
 - github

Nuget package is [there][2].


  [1]: https://github.com/titarenko/OAuth2
  [2]: http://nuget.org/packages/OAuth2

I haven&#39;t seen any good frameworks out there yet for OAuth2.  I&#39;ve decided to try and roll my own for a project.

My framework so far supports bearer tokens and all of the oauth 2 flows (challenge/response, implicit, client credential, resource owner password, and refresh token).

It&#39;s a little clunky, and I&#39;m working on my first REST service built on this framework.

Check it out, any feedback or contributions would be appreciated.

https://github.com/ghorsey/SharpOAuth2



I would look at the [Hammock][1] REST client library.  It is general purpose REST client, but it provides OAuth support as well. 


  [1]: http://hammock.codeplex.com/

I&#39;ve downloaded and compiled Android 2.1 version with `signed-google_ion-ota-14721.zip` image for my HTC phone. The compile completed successfully and so the system image flash.
How can I sign my own Android application with the system signature? 

Can someone describe the whole process for signing a user application with system signature as I am completely new to the signing process. 

How to sign Android app with system signature?

I am writing a simple Bash script to detect when a folder has been modified.

It is something very close to:

    ls -lR $dir &gt; a
    ls -lR $dir &gt; b

    DIFF=$(diff a b) 
    if [ $DIFF -ne 0 ] 
    then
        echo &quot;The directory was modified&quot;

Unfortunately, the if statement prints an error: [: -ne: unary operator expected

I am not sure what is wrong with my script, would anyone please be able to help me?

Thank you very much!

Jary

Bash: using the result of a diff in a if statement

It seems like many app providers are using OAuth2 to allow API access, such as Twitter and Facebook. Does anyone use a good library to do OAuth2 processing that is general enough to use across all applications?

What is the best OAuth2 C# library?

<p>It seems like many app providers are using OAuth2 to allow API access, such as Twitter and Facebook. Does anyone use a good library to do OAuth2 processing that is general enough to use across all applications?</p>


I understand Thread.Abort() is evil from the multitude of articles I&#39;ve read on the topic, so I&#39;m currently in the process of ripping out all of my abort&#39;s in order to replace it for a cleaner way; and after comparing user strategies from people here on stackoverflow and then after reading **&quot;[How to: Create and Terminate Threads (C# Programming Guide)][1]&quot;** from MSDN both which state an approach very much the same -- which is to use a `volatile bool` approach checking strategy, which is nice, but I still have a few questions....

Immediately what stands out to me here, is what if you do not have a simple worker process which is just running a loop of crunching code? For instance for me, my process is a background file uploader process, I do in fact loop through each file, so that&#39;s something, and sure I could add my `while (!_shouldStop)` at the top which covers me every loop iteration, but I have many more business processes which occur before it hits it&#39;s next loop iteration, I want this cancel procedure to be snappy; don&#39;t tell me I need to sprinkle these while loops every 4-5 lines down throughout my entire worker function?!

I really hope there is a better way, could somebody please advise me on if this is in fact, the correct [and only?] approach to do this, or strategies they have used in the past to achieve what I am after.

Thanks gang.

Further reading: [All these SO responses][2] assume the worker thread will loop.  That doesn&#39;t sit comfortably with me.  What if it is a linear, but timely background operation?


  [1]: http://msdn.microsoft.com/en-us/library/7a2f3ay4%28VS.80%29.aspx
  [2]: https://stackoverflow.com/questions/1051838/killing-a-thread-c

Question about terminating a thread cleanly in .NET

I am responsible for a team of developers who will are about to start development of a light weight insurance claims system. The system involves a lot of manual tasks and business workflows and we are looking at using Windows Workflow (.NET 4.0). 

An example of the business domain is as follows:
A policy holder calls the contact centre to lodge a claim. This “event” fires two sub tasks which are manually actioned in parallel and may take a lengthy time to complete;

   1. Check customer for fraud – A manual process whereby an operator calls various credit companies to check and assess the potential of a fraudulent customer. From here the sub task can enter a number of sub-statuses (Check in progress, Failed Reference Check, Passed Reference Check, etc)
   2. Send item to repairs centre – A manual process where the item for which the policy holder lodged the claim is sent the repairs centre to be fixed. From here the sub task can enter a number of sub-statuses (Awaiting Repair, In Progress, Repaired, Posted, etc). 
The claim can only proceed once the status of each sub task has reached a predefined status (based on the business rules). 

On the surface it seems that Workflow is indeed the best technology choice; however I do have a few concerns in using WF 4.0. 

   1. Skill set – Looking at the average developer skill set I do not see many developers who understand or know Workflow.
   2. Maintainability – There seems to be little support within the community for WF 4.0 projects and this coupled with the lack of skill set raise concerns around maintainability.
   3. Barrier to entry – I have a feeling that Windows Workflow has a steep learning curve and it’s not always that easy to pick up.
   4. New product – As Workflow has been completely rewritten for .NET 4.0 I see the product as a first generation product and may not have the necessary stability.
   5. Reputation – Previous versions of Workflow were not well received, considered difficult to develop with and resulted in poor business uptake.

So my question is should we use Windows Workflow (WF) 4.0 for this situation or is there an alternative technology (e.g., [Simple State Machine][1], etc) or even a better workflow engine to use?


  [1]: http://code.google.com/p/stateless/

To Workflow or Not to Workflow?

I have a strongly typed list of custom objects, `MyObject`, which has a property `Id`, along with some other properties.

Let&#39;s say that the `Id` of a `MyObject` defines it as unique and I want to check if my collection doesn&#39;t already have a `MyObject` object that has an `Id` of 1 before I add my new `MyObject` to the collection.

I want to use `if(!List&lt;MyObject&gt;.Contains(myObj))`, but how do I enforce the fact that only one or two properties of `MyObject` define it as unique?

I can use `IComparable`? Or do I only have to override an `Equals` method? If so, I&#39;d need to inherit something first, is that right?

What does Collection.Contains() use to check for existing objects?

With extension methods, we can write handy LINQ operators which solve generic problems.

I want to hear which methods or overloads you are missing in the `System.Linq` namespace and how you implemented them.

Clean and elegant implementations, maybe using existing methods, are preferred.


What&#39;s your favorite LINQ to Objects operator which is not built-in?

How would I convert this code to C++?

    string[] strarr = {&quot;ram&quot;,&quot;mohan&quot;,&quot;sita&quot;};    
    foreach(string str in strarr) {
      listbox.items.add(str);
    }


Foreach loop in C++ equivalent of C#

Consider the following XML:

    &lt;response&gt;
      &lt;status_code&gt;200&lt;/status_code&gt;
      &lt;status_txt&gt;OK&lt;/status_txt&gt;
      &lt;data&gt;
        &lt;url&gt;http://bit.ly/b47LVi&lt;/url&gt;
        &lt;hash&gt;b47LVi&lt;/hash&gt;
        &lt;global_hash&gt;9EJa3m&lt;/global_hash&gt;
        &lt;long_url&gt;http://www.tumblr.com/docs/en/api#api_write&lt;/long_url&gt;
        &lt;new_hash&gt;0&lt;/new_hash&gt;
      &lt;/data&gt;
    &lt;/response&gt;

I&#39;m looking for a really short way to get just the value of the `&lt;hash&gt;` element. I tried:

    var hash = xml.Element(&quot;hash&quot;).Value;
But that&#39;s not working. Is it possible to provide an XPath query to an `XElement`? I can do it with the older `System.Xml` framework, doing something like:

    xml.Node(&quot;/response/data/hash&quot;).Value
Is there something like this in a LINQ namespace?


----------

UPDATE:

After monkeying around with this some more I found a way to do what I&#39;m trying to do:

    var hash = xml.Descendants(&quot;hash&quot;).FirstOrDefault().Value;

I&#39;d still be interested to see if anyone has a better solution?


How to use XPath with XElement or LINQ?

Using C#, Visual Studio 2010.

There is a namespace called [System.Web.Mvc](http://msdn.microsoft.com/en-us/library/system.web.mvc.aspx) documented on MSDN. The documentation for all the types in that namespace says that they are in `System.Web.Mvc.dll`.

However, when I go to Add Reference, “.NET” tab, this assembly is missing from the list. Why?

Why is System.Web.Mvc not listed in Add References?

I&#39;ve been given a .NET project to maintain. I was just browsing through the code and I noticed this on a property declaration:

    public new string navUrl
    {
      get 
      {
        return ...;
      }
      set
      {
        ...
      }
    }

I was wondering what does the `new` modifier do to the property?

&quot;new&quot; keyword in property declaration in c#

A while ago I worked on a web application where users could buy tickets. Due to the way our client&#39;s processes worked, what you effectively got as a result of your purchase was a URL with the ticket number in it.

These were tickets to buy property in the Middle East, and each ticket was potentially worth around $3,000,000. Clearly dishing out sequential integers would have been a bad idea. We used GUIDs as they&#39;re basically unguessable, but my question is: are they secure enough?

As I understand it, the GUIDs .NET produces are totally pseudo-random (except for a few non-varying bits). However, I don&#39;t know what algorithm is used to generate them.

The MSDN documentation tells us that [`Random`][1] is fast and insecure, and [`RNGCryptoServiceProvider`][2] is slow and secure. That is, it&#39;s reasonable to assume someone could put in enough effort to predict the outcome of `Random`, but not of `RNGCryptoServiceProvider`.

If you saw a long enough sequence of GUIDs, would it be possible to predict futures ones? If so, how many would you need to see?


[In our particular case there were physical security checks later on - you had to present the passport you used to buy your ticket - so it wouldn&#39;t have been *too* bad if someone had guessed someone else&#39;s GUID, so we didn&#39;t sweat it at the time. The convenience of using the GUID as a database key made it a useful datatype to use.]


---

**Edit:**

So the answer is &quot;not enough&quot;.

Using [0xA3][3]&#39;s answer below, and following links from the [question][4] he linked to, the following code will generate a cryptographically random GUID that&#39;s valid by [Section 4.4 of RFC 4122][5]:

    static Guid MakeCryptoGuid()
    {
        // Get 16 cryptographically random bytes
        RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
        byte[] data = new byte[16];
        rng.GetBytes(data);
    
        // Mark it as a version 4 GUID
        data[7] = (byte)((data[7] | (byte)0x40) &amp; (byte)0x4f);
        data[8] = (byte)((data[8] | (byte)0x80) &amp; (byte)0xbf);
    
        return new Guid(data);
    }

This produces GUIDs much more slowly than `Guid.NewGuid()`, but with 122 bits of &quot;very random&quot; data, they are safely unpredictable.

Of course, any cryptographically random text would have done for a ticket number, but GUIDs are pretty handy. :-)

As with other version 4 GUIDs there&#39;s no absolute guarantee of uniqueness, but the odds are impressive. So long as you have fewer than 326,915,130,069,135,865 (i.e. [sqrt(-2*2^122*ln(0.99))][6]) GUIDs in play simultaneously, you can be more than 99% sure there are no collisions. Put another way: if like mine your application will have overflow errors all over the place if you have more than `int.MaxValue` of pretty much anything, you can be more than 99.9999999999999999% sure of no collisions (i.e. [e^-(((2^31-1)^2)/(2*2^122))][7]). This is about a thousand times more sure than you can be that a meteorite won&#39;t wipe out most of life on Earth within one second of the application going live (i.e. [one per 100 million years][8]).


  [1]: http://msdn.microsoft.com/en-us/library/system.random.aspx
  [2]: http://msdn.microsoft.com/en-us/library/system.security.cryptography.rngcryptoserviceprovider.aspx
  [3]: https://stackoverflow.com/users/40347/0xa3
  [4]: https://stackoverflow.com/questions/2621563/how-random-is-system-guid-newguid-take-two
  [5]: https://www.rfc-editor.org/rfc/rfc4122#section-4.4
  [6]: http://www.wolframalpha.com/input/?i=sqrt(-2*2^122*ln(0.99))
  [7]: http://www.wolframalpha.com/input/?i=e^-(((2^31-1)^2)/(2*2^122))
  [8]: http://en.wikipedia.org/wiki/Impact_event#Mass_extinctions_and_impacts

How securely unguessable are GUIDs?

For a while, I&#39;ve been trying to find a way of intelligently extracting the &quot;relevant&quot; text from a URL by eliminating the text related to ads and all the other clutter.After several months of researching, I gave it up as a problem that cannot be accurately determined. (I&#39;ve tried different ways but none were reliable)

A week back, I stumbled across [Readability][1] - a plugin that converts any URL into readable text. It looks pretty accurate to me. My guess is that they somehow have an algorithm that&#39;s smart enough to extract the relevant text.

Does anyone know how they do it? Or how I could do it reliably?


  [1]: http://lab.arc90.com/experiments/readability/

What algorithm does Readability use for extracting text from URLs?

I had no problem with this in Visual Studio 2008 but it seems that VS 2010 is having an issue, and I&#39;m betting it&#39;s probably me.

I have a solution with an ASP.NET Web Site Project and a few C# projects (BLL, DAL, Tests in NUnit). I have configured the build process for the test project to automatically run NUnit to run the tests. I would like to ensure that the BLL and DAL projects build before the test project so that the tests will run against the latest compiled version (yes, I know I could do this all in one project, but I&#39;m choosing not to -- please bear with me :) )

So, I set the dependencies of the Test project to include the BLL, DAL, and Web Application projects, and the build order shows BLL, DAL, Web Application, and then Tests. However, I noticed that the BLL doesn&#39;t actually build when I build the Test project.

Any idea what this could be or any option I might be missing to force the other projects to build when I build the Test project?

Thanks in advance for any help!

Visual Studio 2010: How to enforce build order of projects in a solution?

I am really surprised that there is no native .NET method to get an absolute url from a relative url. I know this has been discussed many times, but never have come across a satisfactory method that handles this well. Can you help fine tune the method below?

I think all I need left is to auto choose the protocol instead of hard coding it (http/https). Anything else I am missing (caveats, performance, etc)?

    

    public static string GetAbsoluteUrl(string url)
        {
            //VALIDATE INPUT FOR ALREADY ABSOLUTE URL
            if (url.StartsWith(&quot;http://&quot;, StringComparison.OrdinalIgnoreCase) 
               || url.StartsWith(&quot;https://&quot;, StringComparison.OrdinalIgnoreCase))
            { 
                return url;
            }
    
            //GET PAGE REFERENCE FOR CONTEXT PROCESSING
            Page page = HttpContext.Current.Handler as Page;
    
            //RESOLVE PATH FOR APPLICATION BEFORE PROCESSING
            if (url.StartsWith(&quot;~/&quot;))
            {
                url = page.ResolveUrl(url);
            }
    
            //BUILD AND RETURN ABSOLUTE URL
            return &quot;http://&quot; + page.Request.ServerVariables[&quot;SERVER_NAME&quot;] + &quot;/&quot; 
                             + url.TrimStart(&#39;/&#39;);
        }

Get Absolute URL from Relative path (refactored method)

For a new project I&#39;m trying to create my business classes first and create the real database tables later. Therefore I&#39;m using the Entity Framework 4 Designer. A created a new &quot;ADO.Net Entity Data model&quot; file, with the extension .edmx.

I created two Entities:  
![alt text][1]

I want to add a 1 to nc relation between Product -&gt; Group. If I&#39;d created the MSSQL database first, I would have added a column IDGroup to the Table Product and referenced Product.IDGroup to Group.IDGroup. As far as I can see, I can&#39;t add such association in the designer if I add a new Property called IDGroup to the Product Entity


This is how I add the mapping:
![alt text][2]

Which results in:  
![alt text][3]

Now the part what this question is about: If I add two tables from an existing MSSQL database to the edmx file, I&#39;ll get the compile error:

    Error 3027: No mapping specified for the following EntitySet/AssociationSet - GroupSet, ProductSet

What does that error mean and what must I do to fix this?
If I delete those two tables, I&#39;ll receive a warning instead:

    Error 2062: No mapping specified for instances of the EntitySet and AssociationSet in the EntityContainer myContainer.

Something tells me, I&#39;m doing this all wrong and this is just basic stuff. How can I do it right?


  [1]: http://i.stack.imgur.com/w65e1.png
  [2]: http://i.stack.imgur.com/dcPvl.png
  [3]: http://i.stack.imgur.com/JQ8WB.png

How do I correctly set an association between two objects in the Entity Framework 4 Entitydesigner?

I have 

`string[] pkgratio= &quot;1:2:6&quot;.Split(&#39;:&#39;);`

    var items = pkgratio.OrderByDescending(x =&gt; x);

I want to select the middle value and have come up with this. Is this a correct way to select the second value in an IEnumberable?

    pkgratio.Skip(1).Take(1).First();

LINQ - selecting second item in IEnumerable

I would assume there&#39;s a simple LINQ query to do this, I&#39;m just not exactly sure how.

Given this piece of code:

    class Program
    {
        static void Main(string[] args)
        {
            List&lt;Person&gt; peopleList1 = new List&lt;Person&gt;();
            peopleList1.Add(new Person() { ID = 1 });
            peopleList1.Add(new Person() { ID = 2 });
            peopleList1.Add(new Person() { ID = 3 });

            List&lt;Person&gt; peopleList2 = new List&lt;Person&gt;();
            peopleList2.Add(new Person() { ID = 1 });
            peopleList2.Add(new Person() { ID = 2 });
            peopleList2.Add(new Person() { ID = 3 });
            peopleList2.Add(new Person() { ID = 4 });
            peopleList2.Add(new Person() { ID = 5 });
        }
    }

    class Person
    {
        public int ID { get; set; }
    }

I would like to perform a LINQ query to give me all of the people in `peopleList2` that are not in `peopleList1`.

This example should give me two people (ID = 4 &amp; ID = 5)

Use LINQ to get items in one List&lt;&gt;, that are not in another List&lt;&gt;

I recently upgraded to IE9-beta. Now, In my .Net (3.5) WinForm application I want to use `WebBrowser` control. 

So my question is, whether the `WebBrowser` control will exhibit all properties and functions of IE9? 

My concern is, I want to render some SVG graphics on it.

Will the IE9 WebBrowser Control Support all of IE9&#39;s features, including SVG?

I have the following code:

    Func&lt;string, bool&gt; comparer = delegate(string value) {
        return value != &quot;0&quot;;
    };

However, the following does not compile:

    var comparer = delegate(string value) {
        return value != &quot;0&quot;;
    };

Why can&#39;t the compiler figure out it is a `Func&lt;string, bool&gt;`? It takes one string parameter, and returns a boolean. Instead, it gives me the error:

&gt; Cannot assign anonymous method to an
&gt; implicitly-typed local variable.

I have one guess and that is *if the var version compiled*, it would lack consistency if I had the following:

    var comparer = delegate(string arg1, string arg2, string arg3, string arg4, string arg5) {
        return false;
    };

The above wouldn&#39;t make sense since Func&lt;&gt; allows only up to 4 arguments (in .NET 3.5, which is what I am using). Perhaps someone could clarify the problem. Thanks.


Why can&#39;t an anonymous method be assigned to var?

&lt;h1&gt;Overview&lt;/h1&gt;
&lt;p&gt;I&#39;m looking to create a (REST) API for my application.  The initial/primary purpose will be for consumption by mobile apps (iPhone, Android, Symbian, etc).  I&#39;ve been looking into different mechanisms for authentication and authorization for web-based APIs (by studying other implementations).  I&#39;ve got my head wrapped around most of the fundamental concepts but am still looking for guidance in a few areas.  The last thing I want to do is reinvent the wheel, but I&#39;m not finding any standard solutions that fits my criteria (however my criteria my be misguided so feel free to critique that as well).  Additionally, I want the API to be the same for all platforms/applications consuming it.&lt;/p&gt;

&lt;h2&gt;oAuth&lt;/h2&gt;
&lt;p&gt;I&#39;ll go ahead and throw out my objection to oAuth since I know that will likely be the first solution offered.  For mobile applications (or more specifically non-web applications), it just seems wrong to leave the application (to go to a web-browser) for the authentication.  Additionally, there is no way (I am aware of) for the browser to return the callback to the application (especially cross-platform).  I know a couple of apps that do that, but it just feels wrong and gives a break in the application UX.&lt;/p&gt;

&lt;h2&gt;Requirements&lt;/h2&gt;
&lt;ol&gt;
&lt;li&gt;User enters username/password into application.&lt;/li&gt;
&lt;li&gt;Every API call is identified by the calling application.&lt;/li&gt;
&lt;li&gt;Overhead is kept to a minimum and the auth aspect is intuitive for developers.&lt;/li&gt;
&lt;li&gt;The mechanism is secure for both the end user (their login credentials are not exposed) as well as the developer (their application credentials are not exposed).&lt;/li&gt;
&lt;li&gt;If possible, not require https (by no means a hard requirement).&lt;/li&gt;
&lt;/ol&gt;

&lt;h3&gt;My Current Thoughts on Implementation&lt;/h3&gt;
&lt;p&gt;An external developer will request an API account.  They will receive an apikey and apisecret.  Every request will require at minimum three parameters.&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;apikey - given to developer at regisration &lt;/li&gt;
&lt;li&gt;timestamp - doubles as a unique identifier for each message for a given apikey&lt;/li&gt;
&lt;li&gt;hash - a hash of the timestamp + the apisecret&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;The apikey is required to identify the application issuing the request.  The timestamp acts similarly to the oauth_nonce and avoids/mitigates replay attacks.  The hash ensures that request was actually issued from the owner of the given apikey.&lt;/p&gt;
&lt;p&gt;For authenticated requests (ones done on the behalf of a user), I&#39;m still undecided between going with an access_token route or a username and password hash combo.  Either way, at some point a username/password combo will be required.  So when it does, a hash of several pieces of information (apikey, apisecret, timestamp) + the password would be used.  &lt;b&gt;I&#39;d love feedback on this aspect.&lt;/b&gt;  FYI, they would have to hash the password first, since I don&#39;t store the passwords in my system without hashing.&lt;/p&gt;

&lt;h3&gt;Conclusion&lt;/h3&gt;
&lt;p&gt;FYI, this isn&#39;t a request for how to build/structure the API in general only how to handle the authentication and authorization from solely within an application.&lt;/p&gt;

&lt;h3&gt;Random Thoughts/Bonus Questions&lt;/h3&gt;
&lt;p&gt;For APIs that only require an apikey as part of the request, how do you prevent someone other than the apikey owner from being able to see the apikey (since sent in the clear) and make excessive requests to push them over usage limits?  Maybe I&#39;m just over thinking this, but shouldn&#39;t there be something to authenticate that a request was verified to the apikey owner?  In my case, that was the purpose of the apisecret, it is never shown/transmitted without being hashed.&lt;/p&gt;
&lt;p&gt;Speaking of hashes, what about md5 vs hmac-sha1?  Does it really matter when all of the values are hashed with with sufficiently long data (ie. apisecret)?&lt;/p&gt;
&lt;p&gt;I had been previously considering adding a per user/row salt to my users password hash.  If I were to do that, how could the application be able to create a matching hash without knowing the salt used?&lt;/p&gt;

Creating an API for mobile applications - Authentication and Authorization

I&#39;m trying to create a .NET-based client app (in WPF - although for the time being I&#39;m just doing it as a console app) to integrate with an OAuth-enabled application, specifically Mendeley (http://dev.mendeley.com), which apparently uses 3-legged OAuth.

This is my first time using OAuth, and I&#39;m having a lot of difficulty getting started with it. I&#39;ve found several .NET OAuth libraries or helpers, but they seem to be more complicated than I think I need. All I want to do is be able to issue REST requests to the Mendeley API and get responses back!

So far, I&#39;ve tried:

 - DotNetOpenAuth
 - http://github.com/bittercoder/DevDefined.OAuth
 - http://oauth.googlecode.com/svn/code/csharp/

The first (DotNetOpenAuth) seems like it could possibly do what I needed if I spent hours and hours trying to work out how. The second and third, as best I can tell, don&#39;t support the verification codes that Mendeley is sending back -- although I could be wrong about this :)

I&#39;ve got a consumer key and secret from Mendeley, and with DotNetOpenAuth I managed to get a browser launched with the Mendeley page providing a verification code for the user to enter into the application. However, at this point I got lost and couldn&#39;t work out how to sensibly provide that back to the application.

I&#39;m very willing to admit that I have no idea where to start with this (although it seems like there&#39;s quite a steep learning curve) - if anyone can point me in the right direction I&#39;d appreciate it!

OAuth with Verification in .NET

In very simple terms, can someone explain the difference between OAuth 2 and OAuth 1?

Is OAuth 1 obsolete now? Should we be implementing OAuth 2? I don&#39;t see many implementations of OAuth 2; most are still using OAuth 1, which makes me doubt OAuth 2 is ready to use. Is it?


How is OAuth 2 different from OAuth 1?

What exactly is OAuth (Open Authorization)?

I have gleaned some information from 

- [OAuth][1]
- [Twitter Tutorial: What is OAuth And What It Means To You][2]
- [What is OAuth][3]

But I want to learn and know more. I&#39;m looking for info on the lifecycle. Why do most of the social networks rely on this open protocol?

Will it become a de facto in near future with the various technologies (e.g. ASP.NET)? 

  [1]: http://en.wikipedia.org/wiki/OAuth
  [2]: http://web.archive.org/web/20160310181429/http://iamdez.com/2010/08/twitter-tutorial-what-is-oauth-and-what-it-means-to-you/
  [3]: http://www.twittergadget.com/what_is_oauth.htm

What exactly is OAuth (Open Authorization)?

I searched on Google and StackOverflow to find a answer to my question but I can&#39;t find one.

I&#39;d like to store the access_token to my database for offline access and I&#39;d like to be sure to specify the correct length of my column.

I can&#39;t even find if it&#39;s just a number or a mix between number and strings.

Content Type	Original Author	Original Content on Stackoverflow
Question	TruMan1	View Question on Stackoverflow
Solution 1 - C#	Eugene Mayevski 'Callback	View Answer on Stackoverflow
Solution 2 - C#	Andrew Semack	View Answer on Stackoverflow
Solution 3 - C#	Geoff	View Answer on Stackoverflow
Solution 4 - C#	Eric Hauser	View Answer on Stackoverflow

What is the best OAuth2 C# library?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Solution 4 - C#

Bash: using the result of a diff in a if statement

How to sign Android app with system signature?

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