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ASP.NET MVC

NET and is stored on the server. Praviin G October 29, at

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Instead, query execution is deferred, which means that the evaluation of an expression is delayed until its realized value is actually iterated over or the ToList method is called. In the SearchIndex sample, the query is executed in the SearchIndex view. For more information about deferred query execution, see Query Execution. Now you can implement the SearchIndex view that will display the form to the user. Right-click inside the SearchIndex method and then click Add View. In the Add View dialog box, specify that you're going to pass a Movie object to the view template as its model class.

In the Scaffold template list, choose List , then click Add. Because you selected List in the Scaffold template list, Visual Studio automatically generated scaffolded some default markup in the view.

The scaffolding created an HTML form. The listing below shows the Create view that was generated:. Append a query string such as? The filtered movies are displayed. You can now pass the search title as route data a URL segment instead of as a query string value. However, you can't expect users to modify the URL every time they want to search for a movie.

So now you you'll add UI to help them filter movies. If you changed the signature of the SearchIndex method to test how to pass the route-bound ID parameter, change it back so that your SearchIndex method takes a string parameter named searchString:. ActionLink "Create New", "Create" , add the following:.

BeginForm helper causes the form to post to itself when the user submits the form by clicking the Filter button. There's no HttpPost overload of the SearchIndex method. You don't need it, because the method isn't changing the state of the application, just filtering data.

You could add the following HttpPost SearchIndex method. In that case, the action invoker would match the HttpPost SearchIndex method, and the HttpPost SearchIndex method would run as shown in the image below. However, even if you add this HttpPost version of the SearchIndex method, there's a limitation in how this has all been implemented. Imagine that you want to bookmark a particular search or you want to send a link to friends that they can click in order to see the same filtered list of movies.

Right now, the search string information is sent to the server as a form field value. This means you can't capture that search information to bookmark or send to friends in a URL. Replace the existing parameterless BeginForm method with the following:. Now when you submit a search, the URL contains a search query string. If you added the HttpPost version of the SearchIndex method, delete it now. Next, you'll add a feature to let users search for movies by genre. Replace the SearchIndex method with the following code:.

This version of the SearchIndex method takes an additional parameter, namely movieGenre. The first few lines of code create a List object to hold movie genres from the database.

Facebook , can be downloaded as an independent NuGet package and it contains everything you need to create a Facebook Canvas application using ASP. Please refer to the tutorial for instructions on how to setup the Facebook Application template. This will give you a pretty good idea of how the new APIs work in the updated Facebook Application template.

Before RC, we used to model bind the User and other Facebook objects as parameters. More importantly, the FacebookContext has an instance of the FacebookClient which can be used to make asynchronously calls to Facebook to get the values for the User and other Facebook objects.

It reduces the payload size and sometime this can be quite significant. For instance, you can get back the user information and what user Likes a connection in a single request by defining the types below. Since we use Json. In addition you can apply modifiers to the connections using FacebookFieldModifier.

Additionally, you can require a set of permissions to be granted before reaching the action by passing them into the attribute. In case the authorization fails, either because of invalid signed request or missing permissions, the users will be redirected to a Facebook OAuth dialog asking them to login or grant the required permissions.

Note that FacebookAuthorizeAttribute is not an authorization filter anymore, the actual authorization is done by FacebookAuthorizeFilter.

Having a global authorization filter allowed us to combine the permissions declared on both the controller and the action. In that page you can explaining why your app requires certain permissions so that users are more likely to grant them. To do that, add the following to your web.

On the action that is receiving the redirect, you can use FacebookRedirectContext parameter to access information like the required permissions and the RedirectUrl to the Facebook OAuth dialog. It will take care of verifying the subscription and validating the integrity of the payload by checking the X-Hub-Signature HTTP header. All you need to provide is a verify token and your business logic to handle the update.

Here is a sample implementation of FacebookRealtimeUpdateController. Note that you can have multiple custom FacebookRealtimeUpdateController to handle different subscriptions Users, Permissions, etc with different verify tokens. The static FacebookSettings class has been replaced by FacebookConfiguration.

Notice that many components such as FacebookAuthorizeFilter are taking an instance of FacebookConfiguration in the constructor which makes unit testing easier. For global access to FacebookConfiguration within the application, you can use GlobalFacebookConfiguration.

Configuration, which is a singleton instance. You can set this property to customize how the FacebookClient is created. You can set this property to change how current user permissions are retrieved. I would encourage you to install the ASP. Please do send us your feedback and feel free to use our CodePlex site to report any issues you might find.

Save my name, email, and website in this browser for the next time I comment. So, I guess you could answer this? Xinyang Qiu — then you need to provide a version for VS, and send VS to the garbage can where it belongs. I would approach to create the same thing for lower versions, if someone wants to use in prior versions? I have the access token in the FacebookClient but neither of the new methods is working.

Can you show me how you're creating the FacebookClient? CreateClient to create the client and then set the access token. However, I can't apply FacebookFieldModifier anymore. Actually, FacebookFieldModifier works with my new Picture object. It must have been cached when I tried it just now. The FacebookLike class looks right to me and it should work in theory. Can you show me which method you are calling? Login LoginModel model, String returnUrl in c: Are you sure that the claims are retrieved correctly in your code?

Thank you, thank you, thank you!!! I know by myself how much time it takes to write proper documentations and what you provide on your side is amazing! Now to my question: Is it possible that clearing the cookie with FederatedAuthentication.

SignOut ; is not the only way? I have set up a federated service with a Thinktecture Identity Server. For logout I use the following in my LogOff method: After running LogOff both cookies have been removed, so it seems the additional session module logout is not necessary anymore. FedAuth and FedAuth1 belong to the same cookie overall, but a single FedAuth can only store 2KB, therefore they are from the same source.

The portion that does not fit into FedAuth is copied to FedAuth1. In the sessionsecuritytokenreceived event I have ClaimsPrincipal. Why are the two object differ?

How can I sync the two? The sessiontoken has the correct claims that I have added in the Authenticate method. Hi Dima, Have you checked the full string value of ClaimTypes. Did you do anything different?

And you cannot see the secret message on the About page, right? You are still logged on as far as the auth server is concerned. It is not up to the auth server to maintain the auth session and the app-specific claims within the MVC app. For some reason the security token may be wiped out or is not set correctly when FederatedAuthentication.

Can you write a short summary of what you see as the code is executed according to the above steps? I stepped through the code and can see that the token is issued correctly for 8 hours. The tokenReceived event is fired as well. After restarting the app, the breakpoints in any of the functions of my CustomClaimsTransformer are not hit. So, somehow the normal authentication scheme works, but not the ClaimsAuthentication.

Is that by design? When you kill the app in Visual Studio then apparently even the auth session dies. The idserver still remembered you as it is up and running in IIS and has not been stopped. Hence you were still logged in but the app-specific claims were lost. However, I tested the following:.

But I already suspected sth like this. Anyway, do you have an idea how I can hook into the normal authentication mechanism and dress up my principal? Hello, I have implemented both the authentication manager and the authorization manager in my application by following your articles.

In the authentication manager i transform my incoming claims from active directory into custom claims and store it in the session security token as described. Then in the authorization manager i override the checkaccess method to verify if the user has the permission to view the page. However, the authorization context doesnt show the claims that were stored in the token.

If i do the transformation each time before calling the checkaccess method as shown in the authorization article, then it adds overhead when each page is loaded Please let me know incase there is a way of doing the same. Authenticate should not be called every time the same resource is accessed. Where do you see that the claims transformation is carried out multiple times for the same resource? Or have I misunderstood your question?

Please can you take a look at this question on Stackoverflow and let me know your comments please. Here is a small issue that cost me some time. In the demo, when you register the module in web. Perfectly good XML, right? Yet in my VS setup this line caused three errors to be thrown, stopping the app in its tracks. I looked again and again for typos and so on without finding any.

Hi Andras, Thanks for writing such a great blog with useful information and practical examples. I wish I had found your blog earlier. I have followed your example in Part 1 of this article to implement Claims Based Authentication in a Web forms application targeting. These roles are then used to determine which pages a user can access.

When I have tried to implement part 2 of your article to make it more efficient, I added this code:. FromHours 8 ; FederatedAuthentication.

The FederatedAuthentication reference was not recognized. This has created a conflict converting between System. Can you advise how to resolve this? Or is there another way to cache my transformed Principal without using FederatedAuthentication? I look forward to your response. I have solved this particular issue. It seems I was using a mixture of old and new framework namespaces. This article helped me sort it out.

Any ideas why the first access has the wrong principal? Did you come up with something to solve that issue? Did your caching to cookie work? Yes, I have fixed it. I had to set Thread. User to my transformedPrincipal in my Authenticate Method.

It needs more testing but so far it works well and only does authenticate and transformPrincipal once per session. Where from do you call Authenticate method? Could you show how you check your cookie after first request?

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Measuring programming progress by lines of code is like measuring aircraft building progress by weight. Claims-based authentication in MVC4 with. March 17, at 8:

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