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  • MVC2: Best Way to Intercept ViewRequest and Alter ActionResult

    - by Matthew
    I'm building an ASP.NET MVC2 Web Application that requires some sophisticated authentication and business logic that cannot be achieved using the out of the box forms authentication. I'm new to MVC so bear with me... My plan was to mark all restricted View methods with one or more custom attributes (that contain additional data). The controller would then override the OnActionExecuting method to intercept requests, analyze the target view's attributes, and do a variety of different things, including re-routing the user to different places. I have the interception and attribute analysis working, but the redirection is not working as expected. I have tried setting the ActionExecutingContext.Result to null and even have tried spooling up controllers via reflection and invoking their action methods. No dice. I was able to achieve it this way... protected override void OnActionExecuting(ActionExecutingContext filterContext) { filterContext.HttpContext.Response.Redirect("/MyView", false); base.OnActionExecuting(filterContext); } This seems like a hack, and there has to be a better way...

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  • How to run a WebForms page and an MVC page in different files?

    - by Erx_VB.NExT.Coder
    when i try to do this and load the webforms page, i get this error, even tho the path is correct. what can i do to get past this? i've tried running the aspx page from the root as well. nada. Server Error in '/' Application. The resource cannot be found. Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly. Requested URL: /Views/Home/FileUploadFrame.aspx Version Information: Microsoft .NET Framework Version:4.0.30128; ASP.NET Version:4.0.30128.1

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  • Is using jquery to call a WCF Data Service from the UI violating the MVC pattern.

    - by Lee Dale
    I'm fairly new to ASP.Net MVC 2 and understand the MVC pattern in itself. But my question is what's the best way to populate dropdownlists in the UI sticking to the MVC pattern. Should I be going through the controller? Every article I've seen to do this shows how to do it using javascript and jquery. I have a test application that I'm re-writing in MVC2 I have my dropdowns working with jquery basically calling a WCF Data Service that returns JSON which populates the dropdowns. Seems to me though that this is bypassing the controller and going straight to the model therefore strictly violating the MVC pattern. Or am I missing something obvious here. You thoughts or best practices would be greatly welcome here. Thanks

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  • ASP.NET - How to add a label to a RadioButtonList ListItem?

    - by EWizard
    I have a RadioButtonList with two ListItems included: <asp:RadioButtonList runat="server" ID="optRollover" OnSelectedIndexChanged="RolloverOptionSelected" AutoPostBack="true"> <asp:ListItem Value="0">100% </asp:ListItem> <asp:ListItem Value="1">Less than 100%</asp:ListItem> </asp:RadioButtonList><br /> On the first ListItem I need to have a label that displays some text from the code behind of the page. Logically it seems to me like I would be able to do something like this: 100% Obviously this does not work because I am getting an error: The 'Text' property of 'asp:ListItem' does not allow child objects. Can anyone think of a way around this constraint?

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  • Which Javascript history back implementation is the best?

    - by Malcolm Frexner
    There are implementations for history.back in Micrososft AJAX and jQuery (http://www.asual.com/jquery/address/). I already have jQuery and asp.net ajax included in my project but I am not sure which implementation of history.back is better. Better for me is: Already used by some large projects Wide browser support Easy to implement Little footprint Does anybody know which one is better? EDIT: Another jquery plugin is http://plugins.jquery.com/project/history It is recommmended in the book JQuery Cookbook. This one worked well so far.

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  • how can get data from another Table

    - by Pushpendra Kuntal
    I am designing a project in asp.net mvc3, i have designed my database in sql server, add i am using ado.net. This is my controller action public ViewResult ProductFormulationIndex() { return View(db.ProductFormulation.ToList()); } means i want to display all fields of ProductFormulation table. this is my table:- and this is my productCategory Table in my ProductFormulationIndex.cshtml i want to display Code of ProductCategory Table, not only id. So what should i do in controller or in Model for it ? you may suggest tutorial related to it. Thanks in advance.

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  • Sending mail with Gmail Account using System.Net.Mail in ASP.NET

    - by Jalpesh P. Vadgama
    Any web application is in complete without mail functionality you should have to write send mail functionality. Like if there is shopping cart application for example then when a order created on the shopping cart you need to send an email to administrator of website for Order notification and for customer you need to send an email of receipt of order. So any web application is not complete without sending email. This post is also all about sending email. In post I will explain that how we can send emails from our Gmail Account without purchasing any smtp server etc. There are some limitations for sending email from Gmail Account. Please note following things. Gmail will have fixed number of quota for sending emails per day. So you can not send more then that emails for the day. Your from email address always will be your account email address which you are using for sending email. You can not send an email to unlimited numbers of people. Gmail ant spamming policy will restrict this. Gmail provide both Popup and SMTP settings both should be active in your account where you testing. You can enable that via clicking on setting link in gmail account and go to Forwarding and POP/Imap. So if you are using mail functionality for limited emails then Gmail is Best option. But if you are sending thousand of email daily then it will not be Good Idea. Here is the code for sending mail from Gmail Account. using System.Net.Mail; namespace Experiement { public partial class WebForm1 : System.Web.UI.Page { protected void Page_Load(object sender,System.EventArgs e) { MailMessage mailMessage = new MailMessage(new MailAddress("[email protected]") ,new MailAddress("[email protected]")); mailMessage.Subject = "Sending mail through gmail account"; mailMessage.IsBodyHtml = true; mailMessage.Body = "<B>Sending mail thorugh gmail from asp.net</B>"; System.Net.NetworkCredential networkCredentials = new System.Net.NetworkCredential("[email protected]", "yourpassword"); SmtpClient smtpClient = new SmtpClient(); smtpClient.EnableSsl = true; smtpClient.UseDefaultCredentials = false; smtpClient.Credentials = networkCredentials; smtpClient.Host = "smtp.gmail.com"; smtpClient.Port = 587; smtpClient.Send(mailMessage); Response.Write("Mail Successfully sent"); } } } That’s run this application and you will get like below in your account. Technorati Tags: Gmail,System.NET.Mail,ASP.NET

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  • State management using the Application class in ASP.Net applications

    - by nikolaosk
    I have explained some of the state mechanisms that we have in our disposal for preserving state in ASP.Net applications in various posts in this blog. You can have a look at this post , this post , this post and this one . I have not presented yet an example in using the Application class/object for preserving state within our application. Application state is available globally in an application.The way we access Application State is through the HttpApplication object's Application property. Let...(read more)

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  • Asp.net session on browser close

    - by budugu
    Note: Cross posted from Vijay Kodali's Blog. Permalink How to capture logoff time when user closes browser? Or How to end user session when browser closed? These are some of the frequently asked questions in asp.net forums. In this post I'll show you how to do this when you're building an ASP.NET web application. Before we start, one fact: There is no full-proof technique to catch the browser close event for 100% of time. The trouble lies in the stateless nature of HTTP. The Web server is out of the picture as soon as it finishes sending the page content to the client. After that, all you can rely on is a client side script. Unfortunately, there is no reliable client side event for browser close. Solution: The first thing you need to do is create the web service. I've added web service and named it AsynchronousSave.asmx.    Make this web service accessible from Script, by setting class qualified with the ScriptServiceAttribute attribute...  Add a method (SaveLogOffTime) marked with [WebMethod] attribute. This method simply accepts UserId as a string variable and writes that value and logoff time to text file. But you can pass as many variables as required. You can then use this information for many purposes. To end user session, you can just call Session.Abandon() in the above web method. To enable web service to be called from page’s client side code, add script manager to page. Here i am adding to SessionTest.aspx page When the user closes the browser, onbeforeunload event fires on the client side. Our final step is adding a java script function to that event, which makes web service calls. The code is simple but effective My Code HTML:( SessionTest.aspx ) C#:( SessionTest.aspx.cs ) That’s’ it. Run the application and after browser close, open the text file to see the log off time. The above code works well in IE 7/8. If you have any questions, leave a comment.

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  • Asp.net session on browser close

    - by budugu
    Note: Cross posted from Vijay Kodali's Blog. Permalink How to capture logoff time when user closes browser? Or How to end user session when browser closed? These are some of the frequently asked questions in asp.net forums. In this post I'll show you how to do this when you're building an ASP.NET web application. Before we start, one fact: There is no full-proof technique to catch the browser close event for 100% of time. The trouble lies in the stateless nature of HTTP. The Web server is out of the picture as soon as it finishes sending the page content to the client. After that, all you can rely on is a client side script. Unfortunately, there is no reliable client side event for browser close. Solution: The first thing you need to do is create the web service. I've added web service and named it AsynchronousSave.asmx.    Make this web service accessible from Script, by setting class qualified with the ScriptServiceAttribute attribute...  Add a method (SaveLogOffTime) marked with [WebMethod] attribute. This method simply accepts UserId as a string variable and writes that value and logoff time to text file. But you can pass as many variables as required. You can then use this information for many purposes. To end user session, you can just call Session.Abandon() in the above web method. To enable web service to be called from page’s client side code, add script manager to page. Here i am adding to SessionTest.aspx page When the user closes the browser, onbeforeunload event fires on the client side. Our final step is adding a java script function to that event, which makes web service calls. The code is simple but effective My Code HTML:( SessionTest.aspx ) C#:( SessionTest.aspx.cs ) That’s’ it. Run the application and after browser close, open the text file to see the log off time. The above code works well in IE 7/8. If you have any questions, leave a comment.

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  • Different types of Session state management options available with ASP.NET

    - by Aamir Hasan
    ASP.NET provides In-Process and Out-of-Process state management.In-Process stores the session in memory on the web server.This requires the a "sticky-server" (or no load-balancing) so that the user is always reconnected to the same web server.Out-of-Process Session state management stores data in an external data source.The external data source may be either a SQL Server or a State Server service.Out-of-Process state management requires that all objects stored in session are serializable.Linkhttp://msdn.microsoft.com/en-us/library/ms178586%28VS.80%29.aspx

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  • Membership in ASP.Net applications - part 1

    - by nikolaosk
    So far in all my posts, I have never mentioned anything about how to implement authentication/authorisation mechanisms in a web site. In all our professional web applications we do need some sort of mechanism to verify who are users are and what privileges have in our site. This is the first post in a series of posts investigating how to implement membership (authentication+authorisation) in ASP.Net applications. We will look into the built-in web server security controls.We will look at the built...(read more)

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  • Breaking Changes in Asp.Net 4

    - by joelvarty
    I upgraded an app to .net just for fun and a bunch of things broke. Turns out there are quite a few things that are officially broken between anything and .Net 4.0… http://www.asp.net/%28S%28ywiyuluxr3qb2dfva1z5lgeg%29%29/learn/whitepapers/aspnet4/breaking-changes/ more later – joel

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  • ASP.NET developers build rich management system using the VWG extension

    - by Visual WebGui
    When The Center for Organ Recovery & Education (CORE) decided they needed a web application to allow easy access to the expenses management system they initially went to ASP.NET web forms combined with CSS. The outcome, however, was not satisfying enough as it appeared bland and lacked in richness. So in order to enrich the UI and give the web application some glitz, Visual WebGui was selected. Visual WebGui provided the needed richness and the familiar Windows look and feel also made the transition...(read more)

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  • ASP.NET MVC: Using ProfileRequiredAttribute to restrict access to pages

    - by DigiMortal
    If you are using AppFabric Access Control Services to authenticate users when they log in to your community site using Live ID, Google or some other popular identity provider, you need more than AuthorizeAttribute to make sure that users can access the content that is there for authenticated users only. In this posting I will show you hot to extend the AuthorizeAttribute so users must also have user profile filled. Semi-authorized users When user is authenticated through external identity provider then not all identity providers give us user name or other information we ask users when they join with our site. What all identity providers have in common is unique ID that helps you identify the user. Example. Users authenticated through Windows Live ID by AppFabric ACS have no name specified. Google’s identity provider is able to provide you with user name and e-mail address if user agrees to publish this information to you. They both give you unique ID of user when user is successfully authenticated in their service. There is logical shift between ASP.NET and my site when considering user as authorized. For ASP.NET MVC user is authorized when user has identity. For my site user is authorized when user has profile and row in my users table. Having profile means that user has unique username in my system and he or she is always identified by this username by other users. My solution is simple: I created my own action filter attribute that makes sure if user has profile to access given method and if user has no profile then browser is redirected to join page. Illustrating the problem Usually we restrict access to page using AuthorizeAttribute. Code is something like this. [Authorize] public ActionResult Details(string id) {     var profile = _userRepository.GetUserByUserName(id);     return View(profile); } If this page is only for site users and we have user profiles then all users – the ones that have profile and all the others that are just authenticated – can access the information. It is okay because all these users have successfully logged in in some service that is supported by AppFabric ACS. In my site the users with no profile are in grey spot. They are on half way to be users because they have no username and profile on my site yet. So looking at the image above again we need something that adds profile existence condition to user-only content. [ProfileRequired] public ActionResult Details(string id) {     var profile = _userRepository.GetUserByUserName(id);     return View(profile); } Now, this attribute will solve our problem as soon as we implement it. ProfileRequiredAttribute: Profiles are required to be fully authorized Here is my implementation of ProfileRequiredAttribute. It is pretty new and right now it is more like working draft but you can already play with it. public class ProfileRequiredAttribute : AuthorizeAttribute {     private readonly string _redirectUrl;       public ProfileRequiredAttribute()     {         _redirectUrl = ConfigurationManager.AppSettings["JoinUrl"];         if (string.IsNullOrWhiteSpace(_redirectUrl))             _redirectUrl = "~/";     }              public override void OnAuthorization(AuthorizationContext filterContext)     {         base.OnAuthorization(filterContext);           var httpContext = filterContext.HttpContext;         var identity = httpContext.User.Identity;           if (!identity.IsAuthenticated || identity.GetProfile() == null)             if(filterContext.Result == null)                 httpContext.Response.Redirect(_redirectUrl);          } } All methods with this attribute work as follows: if user is not authenticated then he or she is redirected to AppFabric ACS identity provider selection page, if user is authenticated but has no profile then user is by default redirected to main page of site but if you have application setting with name JoinUrl then user is redirected to this URL. First case is handled by AuthorizeAttribute and the second one is handled by custom logic in ProfileRequiredAttribute class. GetProfile() extension method To get user profile using less code in places where profiles are needed I wrote GetProfile() extension method for IIdentity interface. There are some more extension methods that read out user and identity provider identifier from claims and based on this information user profile is read from database. If you take this code with copy and paste I am sure it doesn’t work for you but you get the idea. public static User GetProfile(this IIdentity identity) {     if (identity == null)         return null;       var context = HttpContext.Current;     if (context.Items["UserProfile"] != null)         return context.Items["UserProfile"] as User;       var provider = identity.GetIdentityProvider();     var nameId = identity.GetNameIdentifier();       var rep = ObjectFactory.GetInstance<IUserRepository>();     var profile = rep.GetUserByProviderAndNameId(provider, nameId);       context.Items["UserProfile"] = profile;       return profile; } To avoid round trips to database I cache user profile to current request because the chance that profile gets changed meanwhile is very minimal. The other reason is maybe more tricky – profile objects are coming from Entity Framework context and context has also HTTP request as lifecycle. Conclusion This posting gave you some ideas how to finish user profiles stuff when you use AppFabric ACS as external authentication provider. Although there was little shift between us and ASP.NET MVC with interpretation of “authorized” we were easily able to solve the problem by extending AuthorizeAttribute to get all our requirements fulfilled. We also write extension method for IIdentity that returns as user profile based on username and caches the profile in HTTP request scope.

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  • Google Chrome Loses ASP.NET Sessions - Need FavIcon

    - by nannette
    I had programmed a brilliant web page in ASP.NET 4.0 and lo and behold, this one page lost its sessions in Google Chrome. I could run it locally in debug and could not reproduce the issues in Chrome. Didn't happen in IE or Firefox, only Chrome on the published server. I finally found in a forum where someone mentioned that Google Chrome looks for favicons and if it doesn't find one it will throw a 302 redirect and kill the session. http://stackoverflow.com/questions/8247842/session-data-lost-in-chrome...(read more)

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  • ASP.NET NVC - Add XHTML into validation error messages

    - by Neil
    Hi, Just starting with ASP.Net MVC and have hit a bit of a snag regarding validation messages. I've a custom validation attribute assigned to my class validate several properties on my model. When this validation fails, we'd like the error message to contain XHTML mark-up, including a link to help page, (this was done in the original WebForms project as a ASP:Panel). At the moment the XHTML tags such as "< a ", in the ErrorMessage are being rendered to the screen. Is there any way to get the ValidationSummary to render the XHTML markup correctly? Or is there a better way to handle this kind of validation? Thanks

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  • Spark-View-Engine with ASP.NET MVC2

    - by Ben
    How do you modify a ASP.NET MVC 2.0 project to work with the Spark View Engine? I tried like described here: http://dotnetslackers.com/articles/aspnet/installing-the-spark-view-engine-into-asp-net-mvc-2-preview-2.aspx But somehow it still tries to route to .aspx files. Here the code of my global.asax: public class MvcApplication : System.Web.HttpApplication { public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = "" } // Parameter defaults ); } protected void Application_Start() { SparkViewFactory svf = new SparkViewFactory(); PrecompileViews(svf); AreaRegistration.RegisterAllAreas(); RegisterRoutes(RouteTable.Routes); } public static void PrecompileViews(SparkViewFactory svf) { var controllerFactory = svf; var viewFactory = new SparkViewFactory(controllerFactory.Settings); var batch = new SparkBatchDescriptor(); batch .For<HomeController>() .For<AccountController>(); viewFactory.Precompile(batch); } } }

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  • ASP.NET MVC authentication for iPhone application

    - by manu08
    This is for an ASP.NET MVC application. For browser based access on my normal controllers, I'm using standard forms authentication and auth cookies. My question is how I do the same for an iPhone application. I have a set of RESTful controllers that the iPhone application uses directly, but I'm not sure how to go about authentication... I was thinking of having a special Login method that returns the auth cookie. Then I can use the standard Authentication attribute on the ASP.NET MVC side, but I'm not sure how to handle this on the iPhone side? Can I store this cookie and have it automatically sent with every request? Perhaps there's a better approach altogether?

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  • ASP.NET MVC2 and AJAX

    - by Jason
    I am currently developing a new website utilizing ASP.NET MVC2. Much of what I want to do with the website (from a front-end standpoint) involves AJAX-y-type tasks. Two examples: I want to display forms, and switch between them via a drop-down menu (or through links) without having to go back and hit the server every single time. I want the user to be able to select points on a Chart Control and have portions of the page refresh with the appropriate data depending on what he/she selects (partial page refresh). In both these cases, I am able to accomplish what I wish to accomplish using the traditional web forms event handlers, etc. Unfortunately, the use of a ScriptManager violates the spirit of MVC. It seems as if MVC prevents the use of many of the controls that are available to ASP.NET. So, my question is: how do I use AJAX and make AJAX calls without utilizing ScriptManager and the web forms method of utilizing event handlers?

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  • Asp net MVC controllers and widgets

    - by Josemalive
    Hi, I have some doubts about ASP.Net MVC, and i would like to ask few questions. If i understood well, a controller/action is selected from a httprequest. As one request is used to get one web page, could we call to these controllers "page controllers"? My other question is about the widgets and RenderPartial method. If a widget represent a classic asp.net webcontrol or usercontrol, and i want to render this widget in a lot of pages, how could avoid repeat the logic of the widget if this logic is in the "page controller"? Any help would be appreciated. Thanks in advance. Best Regards. Jose

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  • How can I get controller type and action info from a url or from route data?

    - by Rob Levine
    How can I get the controller action (method) and controller type that will be called, given the System.Web.Routing.RouteData? My scenario is this - I want to be able to do perform certain actions (or not) in the OnActionExecuting method for an action. However, I will often want to know not the current action, but the "root" action being called; by this I mean I may have a view called "Login", which is my login page. This view may include another partial view "LeftNav". When OnActionExecuting is called for LeftNav, I want to be able to determine that it is really being called for the "root" aciton of Login. I realise that by calling RouteTable.Routes.GetRouteData(actionExecutingContext.HttpContext), I can get the route for the "root" request, but how to turn this into method and type info? The only solution I have so far, is something like: var routeData = RouteTable.Routes.GetRouteData(actionExecutingContext.HttpContext) var routeController = (string)routeData.Values["controller"]; var routeAction = (string)routeData.Values["action"]; The problem with this is that "routeController" is the controller name with the "Controller" suffix removed, and is not fully qualified; ie it is "Login", rather than "MyCode.Website.LoginController". I would far rather get an actual Type and MethodInfo if possible, or at least a fully qualified type name. Any thoughts, or alternative approaches? [EDIT - this is ASP.Net MVC 1.0]

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