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• How to : required validator based on user role ASP.Net MVC 3

  - by user70909

  Hi, i have a form where i have the field "Real Cost" i want to customize its appearance and wither it should be validated based on user role. to be more clear is say the client want to show his field in the form or details page and also make it editable for users in Roles "Senior Sales, Manager" but not other roles, so can anyone please guide me of the best way ? should i write custom required validation based on user in role, and if so can you please provide the right implementation of it? some may tell me create custom model for this, but i think it would be hassle plus the Roles will be dynamic so it is not predefined set of roles. i hope i was clear enough

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• DLL-s needed to run ASP.NET MVC 3 RC on Windows Azure

  - by DigiMortal

  In this weekend I made one of my new apps run on Windows Azure. I am building this application using ASP.NET MVC 3 RC and Razor view engine. In this posting I will list DLL-s you need to have as local copies to get ASP.NET MVC 3 RC run on Windows Azure web role. Besides assemblies that are already references you may need to add references to some more assemblies. List of assemblies is here: Microsoft.Web.Infrastructure System.Web.Helpers System.Web.Mvc System.Web.Razor System.Web.WebPages System.Web.WebPages.Razor WebMatrix.Data You can find Razor and ASP.NET Web Pages related assemblies from folder: C:\Program Files\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\ NB! If your project is using dynamically loaded assemblies that are not referenced from any of your project make sure you are including them as project items that are located in bin folder. This way these DLL-s are also put to deployment package and you don’t have to create code level references to them.

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• Using a :default for file names on include templates in SMARTY 3 [closed]

  - by Yohan Leafheart

  Hello everyone, Although I don't think the question was as good as it could be, let me try to explain better here. I have a site using SMARTY 3 as the template system. I have a template structure similar to the below one: /templates/place1/inner_a.tpl /templates/place1/inner_b.tpl /templates/place2/inner_b.tpl /templates/place2/inner_c.tpl /templates/default/inner_a.tpl /templates/default/inner_b.tpl /templates/default/inner_c.tpl These are getting included on the parent template using {include file="{$temp_folder}/{$inner_template}"} So far great. What I wanted to do is having a default for, in the case that the file "{$temp_folder}/{$inner_template}" does not exists, it uses the equivalent file at "default/{$inner_template}". i.e. If I do {include file="place1/inner_c.tpl"}, since that file does not exists it in fact includes "default/inner_c.tpl" Is it possible?

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• Sending Messages to SignalR Hubs from the Outside

  - by Ricardo Peres

  Introduction You are by now probably familiarized with SignalR, Microsoft’s API for real-time web functionality. This is, in my opinion, one of the greatest products Microsoft has released in recent time. Usually, people login to a site and enter some page which is connected to a SignalR hub. Then they can send and receive messages – not just text messages, mind you – to other users in the same hub. Also, the server can also take the initiative to send messages to all or a specified subset of users on its own, this is known as server push. The normal flow is pretty straightforward, Microsoft has done a great job with the API, it’s clean and quite simple to use. And for the latter – the server taking the initiative – it’s also quite simple, just involves a little more work. The Problem The API for sending messages can be achieved from inside a hub – an instance of the Hub class – which is something that we don’t have if we are the server and we want to send a message to some user or group of users: the Hub instance is only instantiated in response to a client message. The Solution It is possible to acquire a hub’s context from outside of an actual Hub instance, by calling GlobalHost.ConnectionManager.GetHubContext<T>(). This API allows us to: Broadcast messages to all connected clients (possibly excluding some); Send messages to a specific client; Send messages to a group of clients. So, we have groups and clients, each is identified by a string. Client strings are called connection ids and group names are free-form, given by us. The problem with client strings is, we do not know how these map to actual users. One way to achieve this mapping is by overriding the Hub’s OnConnected and OnDisconnected methods and managing the association there. Here’s an example: 1: public class MyHub : Hub 2: { 3: private static readonly IDictionary<String, ISet<String>> users = new ConcurrentDictionary<String, ISet<String>>(); 4:  5: public static IEnumerable<String> GetUserConnections(String username) 6: { 7: ISet<String> connections; 8:  9: users.TryGetValue(username, out connections); 10:  11: return (connections ?? Enumerable.Empty<String>()); 12: } 13:  14: private static void AddUser(String username, String connectionId) 15: { 16: ISet<String> connections; 17:  18: if (users.TryGetValue(username, out connections) == false) 19: { 20: connections = users[username] = new HashSet<String>(); 21: } 22:  23: connections.Add(connectionId); 24: } 25:  26: private static void RemoveUser(String username, String connectionId) 27: { 28: users[username].Remove(connectionId); 29: } 30:  31: public override Task OnConnected() 32: { 33: AddUser(this.Context.Request.User.Identity.Name, this.Context.ConnectionId); 34: return (base.OnConnected()); 35: } 36:  37: public override Task OnDisconnected() 38: { 39: RemoveUser(this.Context.Request.User.Identity.Name, this.Context.ConnectionId); 40: return (base.OnDisconnected()); 41: } 42: } As you can see, I am using a static field to store the mapping between a user and its possibly many connections – for example, multiple open browser tabs or even multiple browsers accessing the same page with the same login credentials. The user identity, as is normal in .NET, is obtained from the IPrincipal which in SignalR hubs case is stored in Context.Request.User. Of course, this property will only have a meaningful value if we enforce authentication. Another way to go is by creating a group for each user that connects: 1: public class MyHub : Hub 2: { 3: public override Task OnConnected() 4: { 5: this.Groups.Add(this.Context.ConnectionId, this.Context.Request.User.Identity.Name); 6: return (base.OnConnected()); 7: } 8:  9: public override Task OnDisconnected() 10: { 11: this.Groups.Remove(this.Context.ConnectionId, this.Context.Request.User.Identity.Name); 12: return (base.OnDisconnected()); 13: } 14: } In this case, we will have a one-to-one equivalence between users and groups. All connections belonging to the same user will fall in the same group. So, if we want to send messages to a user from outside an instance of the Hub class, we can do something like this, for the first option – user mappings stored in a static field: 1: public void SendUserMessage(String username, String message) 2: { 3: var context = GlobalHost.ConnectionManager.GetHubContext<MyHub>(); 4: 5: foreach (String connectionId in HelloHub.GetUserConnections(username)) 6: { 7: context.Clients.Client(connectionId).sendUserMessage(message); 8: } 9: } And for using groups, its even simpler: 1: public void SendUserMessage(String username, String message) 2: { 3: var context = GlobalHost.ConnectionManager.GetHubContext<MyHub>(); 4:  5: context.Clients.Group(username).sendUserMessage(message); 6: } Using groups has the advantage that the IHubContext interface returned from GetHubContext has direct support for groups, no need to send messages to individual connections. Of course, you can wrap both mapping options in a common API, perhaps exposed through IoC. One example of its interface might be: 1: public interface IUserToConnectionMappingService 2: { 3: //associate and dissociate connections to users 4:  5: void AddUserConnection(String username, String connectionId); 6:  7: void RemoveUserConnection(String username, String connectionId); 8: } SignalR has built-in dependency resolution, by means of the static GlobalHost.DependencyResolver property: 1: //for using groups (in the Global class) 2: GlobalHost.DependencyResolver.Register(typeof(IUserToConnectionMappingService), () => new GroupsMappingService()); 3:  4: //for using a static field (in the Global class) 5: GlobalHost.DependencyResolver.Register(typeof(IUserToConnectionMappingService), () => new StaticMappingService()); 6:  7: //retrieving the current service (in the Hub class) 8: var mapping = GlobalHost.DependencyResolver.Resolve<IUserToConnectionMappingService>(); Now all you have to do is implement GroupsMappingService and StaticMappingService with the code I shown here and change SendUserMessage method to rely in the dependency resolver for the actual implementation. Stay tuned for more SignalR posts!

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• suggestions for Membership in ASP.NET MVC application

  - by mare

  With this question I am mostly looking for answers from people that have implemented the out-of-the-box ASP.NET membership in their own database - I've set up the tables inside my database and as far as I can see they contain mostly what I need but not everything. I will have the notion of a Firm (Company) to which Users will belong so I will have to associate the aspnet_Users with my Firms table (each user will be a member of exactly one firm). If possible, provide some guidelines how did you do it and what I might run into if I have to modify the table design at some point in the future. Preferably I will be using the default Membership provider. I am having trouble to decide whether to go from scratch or use what ASP.NET already offers.

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• My ASP.NET news sources

  - by Jon Galloway

  I just posted about the ASP.NET Daily Community Spotlight. I was going to list a bunch of my news sources at the end, but figured this deserves a separate post. I've been following a lot of development blogs for a long time - for a while I subscribed to over 1500 feeds and read them all. That doesn't scale very well, though, and it's really time consuming. Since the community spotlight requires an interesting ASP.NET post every day of the year, I've come up with a few sources of ASP.NET news. Top Link Blogs Chris Alcock's The Morning Brew is a must-read blog which highlights each day's best blog posts across the .NET community. He covers the entire Microsoft development, but generally any of the top ASP.NET posts I see either have already been listed on The Morning Brew or will be there soon. Elijah Manor posts a lot of great content, which is available in his Twitter feed at @elijahmanor, on his Delicious feed, and on a dedicated website - Web Dev Tweets. While not 100% ASP.NET focused, I've been appreciating Joe Stagner's Weekly Links series, partly since he includes a lot of links that don't show up on my other lists. Twitter Over the past few years, I've been getting more and more of my information from my Twitter network (as opposed to RSS or other means). Twitter is as good as your network, so if getting good information off Twitter sounds crazy, you're probably not following the right people. I already mentioned Elijah Manor (@elijahmanor). I follow over a thousand people on Twitter, so I'm not going to try to pick and choose a list, but one good way to get started building out a Twitter network is to follow active Twitter users on the ASP.NET team at Microsoft: @scottgu (well, not on the ASP.NET team, but their great grand boss, and always a great source of ASP.NET info) @shanselman @haacked @bradwilson @davidfowl @InfinitiesLoop @davidebbo @marcind @DamianEdwards @stevensanderson @bleroy @humancompiler @osbornm @anurse I'm sure I'm missing a few, and I'll update the list. Building a Twitter network that follows topics you're interested in allows you to use other tools like Cadmus to automatically summarize top content by leveraging the collective input of many users. Twitter Search with Topsy You can search Twitter for hashtags (like #aspnet, #aspnetmvc, and #webmatrix) to get a raw view of what people are talking about on Twitter. Twitter's search is pretty poor; I prefer Topsy. Here's an example search for the #aspnetmvc hashtag: http://topsy.com/s?q=%23aspnetmvc You can also do combined queries for several tags: http://topsy.com/s?q=%23aspnetmvc+OR+%23aspnet+OR+%23webmatrix Paper.li Paper.li is a handy service that builds a custom daily newspaper based on your social network. They've turned a lot of people off by automatically tweeting "The SuperDevFoo Daily is out!!!" messages (which can be turned off), but if you're ignoring them because of those message, you're missing out on a handy, free service. My paper.li page includes content across a lot of interests, including ASP.NET: http://paper.li/jongalloway When I want to drill into a specific tag, though, I'll just look at the Paper.li post for that hashtag. For example, here's the #aspnetmvc paper.li page: http://paper.li/tag/aspnetmvc Delicious I mentioned previously that I use Delicious for managing site links. I also use their network and search features. The tag based search is pretty good: Even better, though, is that I can see who's bookmarked these links, and add them to my Delicious network. After having built out a network, I can optimize by doing less searching and more leaching leveraging of collective intelligence. Community Sites I scan DotNetKicks, the weblogs.asp.net combined feed, and the ASP.NET Community page, CodeBetter, Los Techies,  CodeProject,  and DotNetSlackers from time to time. They're hit and miss, but they do offer more of an opportunity for finding original content which others may have missed. Terms of Enrampagement When someone's on a tear, I just manually check their sites more often. I could use RSS for that, but it changes pretty often. I just keep a mental note of people who are cranking out a lot of good content and check their sites more often. What works for you?

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• Looking into ASP.Net MVC 4.0 Mobile Development - part 2

  - by nikolaosk

  In this post I will be continuing my discussion on ASP.Net MVC 4.0 mobile development. You can have a look at my first post on the subject here . Make sure you read it and understand it well before you move one reading the remaining of this post. I will not be writing any code in this post. I will try to explain a few concepts related to the MVC 4.0 mobile functionality. In this post I will be looking into the Browser Overriding feature in ASP.Net MVC 4.0. By that I mean that we override the user agent for a given user session. This is very useful feature for people who visit a site through a device and they experience the mobile version of the site, but what they really want is the option to be able to switch to the desktop view. "Why they might want to do that?", you might wonder.Well first of all the users of our ASP.Net MVC 4.0 application will appreciate that they have the option to switch views while some others will think that they will enjoy more the contents of our website with the "desktop view" since the mobile device they view our site has a quite large display.  Obviously this is only one site. These are just different views that are rendered.To put it simply, browser overriding lets our application treat requests as if they were coming from a different browser rather than the one they are actually from. In order to do that programmatically we must have a look at the System.Web.WebPages namespace and the classes in it. Most specifically the class BrowserHelpers. Have a look at the picture below   In this class we see some extension methods for HttpContext class.These methods are called extensions-helpers methods and we use them to switch to one browser from another thus overriding the current/actual browser. These APIs have effect on layout,views and partial views and will not affect any other ASP.Net Request.Browser related functionality.The overridden browser is stored in a cookie. Let me explain what some of these methods do. SetOverriddenBrowser() -  let us set the user agent string to specific value GetOverriddenBrowser() -  let us get the overridden value ClearOverriddenBrowser() -  let us remove any overridden user agent for the current request   To recap, in our ASP.Net MVC 4.0 applications when our application is viewed in our mobile devices, we can have a link like "Desktop View" for all those who desperately want to see the site with in full desktop-browser version.We then can specify a browser type override. My controller class (snippet of code) that is responsible for handling the switching could be something like that. public class SwitchViewController : Controller{ public RedirectResult SwitchView(bool mobile, string returnUrl){if (Request.Browser.IsMobileDevice == mobile)HttpContext.ClearOverriddenBrowser();elseHttpContext.SetOverriddenBrowser(mobile ? BrowserOverride.Mobile : BrowserOverride.Desktop);return Redirect(returnUrl);}} Hope it helps!!!!

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• Adding AjaxOnly Filter in ASP.NET Web API

  - by imran_ku07

          Introduction:                     Currently, ASP.NET MVC 4, ASP.NET Web API and ASP.NET Single Page Application are the hottest topics in ASP.NET community. Specifically, lot of developers loving the inclusion of ASP.NET Web API in ASP.NET MVC. ASP.NET Web API makes it very simple to build HTTP RESTful services, which can be easily consumed from desktop/mobile browsers, silverlight/flash applications and many different types of clients. Client side Ajax may be a very important consumer for various service providers. Sometimes, some HTTP service providers may need some(or all) of thier services can only be accessed from Ajax. In this article, I will show you how to implement AjaxOnly filter in ASP.NET Web API application.         Description:                     First of all you need to create a new ASP.NET MVC 4(Web API) application. Then, create a new AjaxOnly.cs file and add the following lines in this file, public class AjaxOnlyAttribute : System.Web.Http.Filters.ActionFilterAttribute { public override void OnActionExecuting(System.Web.Http.Controllers.HttpActionContext actionContext) { var request = actionContext.Request; var headers = request.Headers; if (!headers.Contains("X-Requested-With") || headers.GetValues("X-Requested-With").FirstOrDefault() != "XMLHttpRequest") actionContext.Response = request.CreateResponse(HttpStatusCode.NotFound); } }                     This is an action filter which simply checks X-Requested-With header in request with value XMLHttpRequest. If X-Requested-With header is not presant in request or this header value is not XMLHttpRequest then the filter will return 404(NotFound) response to the client.                      Now just register this filter, [AjaxOnly] public string GET(string input)                     You can also register this filter globally, if your Web API application is only targeted for Ajax consumer.         Summary:                       ASP.NET WEB API provide a framework for building RESTful services. Sometimes, you may need your certain API services can only be accessed from Ajax. In this article, I showed you how to add AjaxOnly action filter in ASP.NET Web API. Hopefully you will enjoy this article too.

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• How to work RavenDB Id with ASP.NET MVC Routes

  - by shiju

  By default RavenDB's Id would be sperated by "/". Let's say that we have a category object, the Ids would be like "categories/1". This will make problems when working with ASP.NET MVC's route rule. For a route category/edit/id, the uri would be category/edit/categories/1. You can solve this problem in two waysSolution 1 - Change Id SeparatorWe can use different Id Separator for RavenDB Ids in order to working with ASP.NET MVC route rules. The following code specify that Ids would be seperated by "-" rather than the default "/"  documentStore = new DocumentStore { Url = "http://localhost:8080/" };  documentStore.Initialize();  documentStore.Conventions.IdentityPartsSeparator = "-"; The above IdentityPartsSeparator would be generate Ids like "categories-1"Solution 2 - Modify ASP.NET MVC Route Modify the ASP.NET MVC routes in the Global.asax.cs file, as shown in the following code  routes.MapRoute(     "WithParam",                                           // Route name     "{controller}/{action}/{*id}"                         // URL with parameters     );  We just put "*" in front of the id variable that will be working with the default Id separator of RavenDB

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• MVC 4 and the App_Start folder

  - by pjohnson

  I've been delving into ASP.NET MVC 4 a little since its release last month. One thing I was chomping at the bit to explore was its bundling and minification functionality, for which I'd previously used Cassette, and been fairly happy with it. MVC 4's functionality seems very similar to Cassette's; the latter's CassetteConfiguration class matches the former's BundleConfig class, specified in a new directory called App_Start.At first glance, this seems like another special ASP.NET folder, like App_Data, App_GlobalResources, App_LocalResources, and App_Browsers. But Visual Studio 2010's lack of knowledge about it (no Solution Explorer option to add the folder, nor a fancy icon for it) made me suspicious. I found the MVC 4 project template has five classes there--AuthConfig, BundleConfig, FilterConfig, RouteConfig, and WebApiConfig. Each of these is called explicitly in Global.asax's Application_Start method. Why create separate classes, each with a single static method? Maybe they anticipate a lot more code being added there for large applications, but for small ones, it seems like overkill. (And they seem hastily implemented--some declared as static and some not, in the base namespace instead of an App_Start/AppStart one.) Even for a large application I work on with a substantial amount of code in Global.asax.cs, a RouteConfig might be warranted, but the other classes would remain tiny.More importantly, it appears App_Start has no special magic like the other folders--it's just convention. I found it first described in the MVC 3 timeframe by Microsoft architect David Ebbo, for the benefit of NuGet and WebActivator; apparently some packages will add their own classes to that directory as well. One of the first appears to be Ninject, as most mentions of that folder mention it, and there's not much information elsewhere about this new folder.

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• ASP Login page for ASP.NET Application

  - by The King

  Hi All, In my work place, we have several classic ASP and ASP.NET application. All these application though doing different works are integrated through a single sign on mode, which is handled by one main application. The main application is in classic ASP and verifies the userid and password initially and then stores the UserID in a session variable, which is then used by all other ASP and ASP.NET page as a valid Authenticated user. (For DOT NET pages we use session bridging) Is this how authentication is done is classic ASP? (I dont know classic ASP much) From the time I was introduced to this setup, I started to worry whether this setup is flawless? Is there any better way to handle the same ? Will it be possible to authenticate for both classic asp and DOT NET in the same login page? Thanks in advance for you answer Raja

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• How to learn ASP.NET MVC without learning ASP.NET Web forms

  - by Naif

  First of all, I am not a web developer but I can say that I understand in general the difference between PHP, ASP.NET, etc. I have played a little with ASP.NET and C# as well, however, I didn't continue the learning path. Now I'd like to learn ASP.NET MVC but there is no a book for a beginner in ASP.NET MVC so I had a look at the tutorials but it seems that I need to learn C# first and SQL Server and HTML, am I right? So please tell me how can I learn ASP.NET MVC directly (I mean without learning ASP.NET Web forms). What do I need to learn (You can assume that I am an absolute beginner). Update: It is true that i can find ASP.NET MVC tutorial that explain ASP.NET MVC, but I used to find ASP.NET web forms books that explain SQL and C# at the same time and take you step by step. In ASP.NET MVC I don't know how can I start! How can I learn SQL in its own and C# in its own and then combine them with ASP.NET MVC!

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• Securing ASP.Net Pages - Forms Authentication - C# and .Net 4

  - by SAMIR BHOGAYTA

  ASP.Net has a built-in feature named Forms Authentication that allows a developer to easily secure certain areas of a web site. In this post I'm going to build a simple authentication sample using C# and ASP.Net 4.0 (still in beta as of the posting date). Security settings with ASP.Net is configured from within the web.config file. This is a standard ASCII file, with an XML format, that is located in the root of your web application. Here is a sample web.config file: configuration system.web authenticationmode="Forms" formsname="TestAuthCookie"loginUrl="login.aspx"timeout="30" credentialspasswordFormat="Clear" username="user1"password="pass1"/ username="user2"password="pass2"/ authorization denyusers="?"/ compilationtargetFramework="4.0"/ pagescontrolRenderingCompatibilityVersion="3.5"clientIDMode="AutoID"/ Here is the complete source of the sample login.aspx page: div Username: asp:TextBox ID="txtUsername" runat="server":TextBox Password: asp:TextBox ID="txtPassword" runat="server":TextBox asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Login" / asp:Label ID="lblStatus" runat="server" Text="Please login":Label /div And here is the complete source of the login.aspx.cs file: using System; using System.Web.UI.WebControls; using System.Web.Security; public partial class Default3 : System.Web.UI.Page { protected void Button1_Click(object sender, EventArgs e) { if (FormsAuthentication.Authenticate(txtUsername.Text, txtPassword.Text)) { lblStatus.Text = ("Welcome " + txtUsername.Text); FormsAuthentication.RedirectFromLoginPage(txtUsername.Text, true); } else { lblStatus.Text = "Invalid login!"; } } }

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• Using two versions of the same assembly (system.web.mvc) at the same time

  - by Joel Abrahamsson

  I'm using a content management system whose admin interface uses MVC 1.0. I would like to build the public parts of the site using MVC 2. If I just reference System.Web.Mvc version 2 in my project the admin mode doesn't work as the reference to System.Web.Mvc.ViewPage created by the views in the admin interface is ambiguous: The type 'System.Web.Mvc.ViewPage' is ambiguous: it could come from assembly 'C:\Windows\assembly\GAC_MSIL\System.Web.Mvc\2.0.0.0__31bf3856ad364e35\System.Web.Mvc.dll' or from assembly 'C:\Windows\assembly\GAC_MSIL\System.Web.Mvc\1.0.0.0__31bf3856ad364e35\System.Web.Mvc.dll'. Please specify the assembly explicitly in the type name. I could easily work around this by using binding redirects to specify that MVC 2 should always be used. Unfortunately the content management systems admin mode isn't compatible with MVC 2. I'm not exactly sure why, but I start getting a bunch of null reference exceptions in some of it's actions when I try it and the developers of the CMS have confirmed that it isn't compatible with MVC 2 (yet). The admin interface which is accessed through domain.com/admin is not physically located in webroot/admin but in the program files folder on the server and domain.com/admin is instead routed there using a virtual path provider. Therefor, putting a separate web.config file in the admin folder to specify a different version of System.Web.Mvc for that part of the site isn't an option as that won't fly when using shared hosting. Can anyone see any solution to this problem? Perhaps it's possible to specify that for some assemblies a different version of a referenced assembly should be used?

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• Daily tech links for .net and related technologies - May 10-12, 2010

  - by SanjeevAgarwal

  Daily tech links for .net and related technologies - May 10-12, 2010 Web Development jQuery Templates and Data Linking (and Microsoft contributing to jQuery) - ScottGu ASP.NET MVC and jQuery Part 4 – Advanced Model Binding - Mister James Creating an ASP.NET report using Visual Studio 2010 - Part 1 & Part 2 & Part 3 - rajbk Caching Images in ASP.NET MVC -Evan How to Localize an ASP.NET MVC Application - mikeceranski Localization in ASP.NET MVC 2 using ModelMetadata - Raj Kiamal Web Design...(read more)

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• Daily tech links for .net and related technologies - May 13-16, 2010

  - by SanjeevAgarwal

  Daily tech links for .net and related technologies - May 13-16, 2010 Web Development Integrating Twitter Into An ASP.NET Website Using OAuth - Scott Mitchell T4MVC Extensions for MVC Partials - Evan Building a Data Grid in ASP.NET MVC - Ali Bastani Introducing the MVC Music Store - MVC 2 Sample Application and Tutorial - Jon Galloway Announcing the RTM of MvcExtensions - kazimanzurrashid Optimizing Your Website For Speed Web Design Validation with the jQuery UI Tabs Widget - Chris Love A Brief History...(read more)

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• advise how to implement a code generator for asp.NET mvc 2

  - by loviji

  Hello, I would like your advice about how best to solve my problem. In a Web server is running. NET Framework 4.0. Whatever the methods and technologies you would advise me. applications built on the basis Asp.NET MVC 2. I have a database table in MS SQL Server. For each database, I must implement the interface for viewing, editing, and deleting. So code generator must generate model, controller and views.. Generation should happen after clicking on the button. as model I use .NET Entity Framework. Now, I need to generate controllers and views. So if i have a table with name tableN1. and below its colums: [ID] [bigint] IDENTITY(1,1) NOT NULL, [name] [nvarchar 20] NOT NULL, [fullName] [nvarchar 50] NOT NULL, [age] [int] NOT NULL [active] [bit] NULL for this table, i want to generate views and controller. thanks.

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• Implement service layer in MVC

  - by Dan H

  We have a defined service layer hosted in WCF. We are now building a website that will need to use the services functionality. The website is being written in ASP.NET MVC 4 and I'm trying to decide how to reference the WCF service from the MVC app. It's a large complex website and it will be changing on a weekly basis. My first reaction is to abstract out the service references (About 7 services on this one WCF host) and create a service ref facade library with which the website interacts. But, I don't know exactly how to use the service facade in MVC. I'm starting to think the Models will be responsible for it because when the controller gets a model, that model should call the service (if needed) and return what the controller asked. I'm trying to avoid having the MVC app know details of the service references. So, I could have a model factory that creates whatever model the controllers need and they can use the service facade to accomplish it. Is this a good plan, or am I off track?

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• Server side C# MVC with AngularJS

  - by Ryan Langton

  I like using .NET MVC and have used it quite a bit in the past. I have also built SPA's using AngularJS with no page loads other than the initial one. I think I want to use a blend of the two in many cases. Set up the application initially using .NET MVC and set up routing server side. Then set up each page as a mini-SPA. These pages can be quite complex with a lot of client side functionality. My confusion comes in how to handle the model-view binding using both .NET MVC and the AngularJS scope. Do I avoid the use of razor Html helpers? The Html helpers create the markup behind the scene so it could get messy trying to add angularjs tags using the helpers. So how to add ng-model for example to @Html.TextBoxFor(x = x.Name). Also ng-repeat wouldn't work because I'm not loading my model into the scope, right? I'd still want to use a c# foreach loop? Where do I draw the lines of separation? Has anyone gotten .NET MVC and AngularJS to play nicely together and what are your architectural suggestions to do so?

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• asp.net mvc vs angular.js model binding

  - by aw04

  So I've noticed a trend lately of .net web developers using angular.js on the client side of applications and I've become more curious as I play around with angular and compare it to how I would do things in asp.net mvc. I'll give a quick example of what really got me thinking. I recently came across a situation at work (I work in a .net environment) where I needed to create a table bound to a collection of objects that had the ability to add and remove rows/items from the collection. I had an add button that created a new object and appended a row to the end of the table, and a remove button in each row to remove a particular object/row. Using asp.net mvc, I first found myself making an ajax call to the server for each operation, updating the server side model, and refreshing part of the page to show the result in the table. This worked but I didn't really like the idea of calling the server to update the model each time, so I tried to come up with a solution to do this on the client side. It turned out to be quite a task, as I had to generate the html on add with validation and all and the correct indexing for the model binding to work. It got worse on remove, as I ended up with a crazy string replace function to recreate the indexes on each item to satisfy the binding requirements (if an item other than the last is removed, the indexes are no longer correct). Now out of curiosity, I tried to recreate this at home in angular (which I had no experience with) and it took me all of about 10 minutes with simple functions to add and remove items from the client side model. This is just one example, but it seems to me that I'm able to achieve the same results with far fewer calls to the server in angular because of the fact that it binds to a client side model. So my question is, is this a distinct advantage of using a javascript mvc framework or am I somehow under utilizing the power of asp.net mvc and am I right in thinking that these operations should be done on the client and have no business requiring calls to the server?

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• ASP.NET in Moscow!

  - by Stephen Walther

  I’m traveling to Russia and speaking in Moscow next week at the DevConf. This will be the first time that I have visited Russia, and I know that there is a strong ASP.NET community in Russia, so I am very excited about the trip. I’m speaking at the DevConf (http://www.devconf.ru/). I don’t speak Russian, so the only words that I recognize off the home page of the conference website are ASP.NET and JavaScript (PHP, Perl, Python, and Ruby must be Russian words). I’m giving talks on both ASP.NET Web Forms and ASP.NET MVC: What’s New in ASP.NET 4 Web Forms Learn about the new features just released with ASP.NET 4 Web Forms and Visual Studio 2010 that enable you to be more productive and build better websites. Learn how to take control of your markup, client IDs, and view state. Learn how to take advantage of routing with Web Forms to make your websites more search engine friendly.   What’s New in ASP.NET MVC 2 Come learn about the new features being introduced with ASP.NET MVC 2. Templated helpers allow associating edit and display elements with data types automatically. Areas provide a means of dividing a large Web application into multiple projects. Data annotations allows attaching metadata attributes on a model to control validation. Client validation enables form field validation without the need to perform a roundtrip to the server. Learn how these new features enable you to be more productive when building ASP.NET MVC applications. Hope to see you at the conference next week!

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• Creating dynamic breadcrumb in asp.net mvc with mvcsitemap provider

  - by Jalpesh P. Vadgama

  I have done lots breadcrumb kind of things in normal asp.net web forms I was looking for same for asp.net mvc. After searching on internet I have found one great nuget package for mvpsite map provider which can be easily implemented via site map provider. So let’s check how its works. I have create a new MVC 3 web application called breadcrumb and now I am adding a reference of site map provider via nuget package like following. You can find more information about MVC sitemap provider on following URL. https://github.com/maartenba/MvcSiteMapProvid So once you add site map provider. You will find a Mvc.SiteMap file like following. And following is content of that file. <?xml version="1.0" encoding="utf-8" ?> <mvcSiteMap xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://mvcsitemap.codeplex.com/schemas/MvcSiteMap-File-3.0" xsi:schemaLocation="http://mvcsitemap.codeplex.com/schemas/MvcSiteMap-File-3.0 MvcSiteMapSchema.xsd" enableLocalization="true"> <mvcSiteMapNode title="Home" controller="Home" action="Index"> <mvcSiteMapNode title="About" controller="Home" action="About"/> </mvcSiteMapNode> </mvcSiteMap> So now we have added site map so now its time to make breadcrumb dynamic. So as we all know that with in the standard asp.net mvc template we have action link by default for Home and About like following. <div id="menucontainer"> <ul id="menu"> <li>@Html.ActionLink("Home", "Index", "Home")</li> <li>@Html.ActionLink("About", "About", "Home")</li> </ul> </div> Now I want to replace that with our sitemap provider and make it dynamic so I have added the following code. <div id="menucontainer"> @Html.MvcSiteMap().Menu(true) </div> That’s it. This is the magic code @Html.MvcSiteMap will dynamically create breadcrumb for you. Now let’s run this in browser. You can see that it has created breadcrumb dynamically without writing any action link code. So here you can see with MvcSiteMap provider we don’t have to write any code we just need to add menu syntax and rest it will do automatically. That’s it. Hope you liked it. Stay tuned for more till then happy programming.

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• Creating Wizard in ASP.NET MVC (Part 1)

  - by bipinjoshi

  At times you want to accept user input in your web applications by presenting them with a wizard driven user interface. A wizard driven user interface allows you to logically divide and group pieces of information so that user can fill them up easily in step-by-step manner. While creating a wizard is easy in ASP.NET Web Forms applications, you need to implement it yourself in ASP.NET MVC applications. There are more than one approaches to creating a wizard in ASP.NET MVC and this article shows one of them. In Part 1 of this article you will develop a wizard that stores its data in ASP.NET Session and the wizard works on traditional form submission.http://www.binaryintellect.net/articles/9a5fe277-6e7e-43e5-8408-a28ff5be7801.aspx    

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• Writing Unit Tests for an ASP.NET MVC Action Method that handles Ajax Request and Normal Request

  - by shiju

  In this blog post, I will demonstrate how to write unit tests for an ASP.NET MVC action method, which handles both Ajax request and normal HTTP Request. I will write a unit test for specifying the behavior of an Ajax request and will write another unit test for specifying the behavior of a normal HTTP request. Both Ajax request and normal request will be handled by a single action method. So the ASP.NET MVC action method will be execute HTTP Request object’s IsAjaxRequest method for identifying whether it is an Ajax request or not. So we have to create mock object for Request object and also have to make as a Ajax request from the unit test for verifying the behavior of an Ajax request. I have used NUnit and Moq for writing unit tests. Let me write a unit test for a Ajax request Code Snippet [Test] public void Index_AjaxRequest_Returns_Partial_With_Expense_List() {     // Arrange       Mock<HttpRequestBase> request = new Mock<HttpRequestBase>();     Mock<HttpResponseBase> response = new Mock<HttpResponseBase>();     Mock<HttpContextBase> context = new Mock<HttpContextBase>();       context.Setup(c => c.Request).Returns(request.Object);     context.Setup(c => c.Response).Returns(response.Object);     //Add XMLHttpRequest request header     request.Setup(req => req["X-Requested-With"]).         Returns("XMLHttpRequest");       IEnumerable<Expense> fakeExpenses = GetMockExpenses();     expenseRepository.Setup(x => x.GetMany(It.         IsAny<Expression<Func<Expense, bool>>>())).         Returns(fakeExpenses);     ExpenseController controller = new ExpenseController(         commandBus.Object, categoryRepository.Object,         expenseRepository.Object);     controller.ControllerContext = new ControllerContext(         context.Object, new RouteData(), controller);     // Act     var result = controller.Index(null, null) as PartialViewResult;     // Assert     Assert.AreEqual("_ExpenseList", result.ViewName);     Assert.IsNotNull(result, "View Result is null");     Assert.IsInstanceOf(typeof(IEnumerable<Expense>),             result.ViewData.Model, "Wrong View Model");     var expenses = result.ViewData.Model as IEnumerable<Expense>;     Assert.AreEqual(3, expenses.Count(),         "Got wrong number of Categories");         }   In the above unit test, we are calling Index action method of a controller named ExpenseController, which will returns a PartialView named _ExpenseList, if it is an Ajax request. We have created mock object for HTTPContextBase and setup XMLHttpRequest request header for Request object’s X-Requested-With for making it as a Ajax request. We have specified the ControllerContext property of the controller with mocked object HTTPContextBase. Code Snippet controller.ControllerContext = new ControllerContext(         context.Object, new RouteData(), controller); Let me write a unit test for a normal HTTP method Code Snippet [Test] public void Index_NormalRequest_Returns_Index_With_Expense_List() {     // Arrange               Mock<HttpRequestBase> request = new Mock<HttpRequestBase>();     Mock<HttpResponseBase> response = new Mock<HttpResponseBase>();     Mock<HttpContextBase> context = new Mock<HttpContextBase>();       context.Setup(c => c.Request).Returns(request.Object);     context.Setup(c => c.Response).Returns(response.Object);       IEnumerable<Expense> fakeExpenses = GetMockExpenses();       expenseRepository.Setup(x => x.GetMany(It.         IsAny<Expression<Func<Expense, bool>>>())).         Returns(fakeExpenses);     ExpenseController controller = new ExpenseController(         commandBus.Object, categoryRepository.Object,         expenseRepository.Object);     controller.ControllerContext = new ControllerContext(         context.Object, new RouteData(), controller);     // Act     var result = controller.Index(null, null) as ViewResult;     // Assert     Assert.AreEqual("Index", result.ViewName);     Assert.IsNotNull(result, "View Result is null");     Assert.IsInstanceOf(typeof(IEnumerable<Expense>),             result.ViewData.Model, "Wrong View Model");     var expenses = result.ViewData.Model         as IEnumerable<Expense>;     Assert.AreEqual(3, expenses.Count(),         "Got wrong number of Categories"); }   In the above unit test, we are not specifying the XMLHttpRequest request header for Request object’s X-Requested-With, so that it will be normal HTTP Request. If this is a normal request, the action method will return a ViewResult with a view template named Index. The below is the implementation of Index action method Code Snippet public ActionResult Index(DateTime? startDate, DateTime? endDate) {     //If date is not passed, take current month's first and last date     DateTime dtNow;     dtNow = DateTime.Today;     if (!startDate.HasValue)     {         startDate = new DateTime(dtNow.Year, dtNow.Month, 1);         endDate = startDate.Value.AddMonths(1).AddDays(-1);     }     //take last date of start date's month, if end date is not passed     if (startDate.HasValue && !endDate.HasValue)     {         endDate = (new DateTime(startDate.Value.Year,             startDate.Value.Month, 1)).AddMonths(1).AddDays(-1);     }     var expenses = expenseRepository.GetMany(         exp => exp.Date >= startDate && exp.Date <= endDate);     //if request is Ajax will return partial view     if (Request.IsAjaxRequest())     {         return PartialView("_ExpenseList", expenses);     }     //set start date and end date to ViewBag dictionary     ViewBag.StartDate = startDate.Value.ToShortDateString();     ViewBag.EndDate = endDate.Value.ToShortDateString();     //if request is not ajax     return View("Index",expenses); }   The index action method will returns a PartialView named _ExpenseList, if it is an Ajax request and will returns a View named Index if it is a normal request. Source Code The source code has been taken from my EFMVC app which can download from here

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• Regarding Microsoft MVC framework and usage [closed]

  - by Thomas

  it will be better if some one tell me that what type of web application should develop using Microsoft MVC framework. i am familiar with web form but not familiar with MS MVC framework. i feel any type of web application can be developed with web form. i search google lot to know the specific reason for using MS MVC framework. i am keen interested to know when i should develop web apps using MS MVC framework and when i should use web form. i will be happy if some one discuss this issue in detail. thanks

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