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  • Adding items to Model Collection in ASP.NET MVC

    - by Stacey
    In an ASP.NET MVC application where I have the following model.. public class EventViewModel { public Guid Id { get; set; } public List<Guid> Attendants { get; set; } } passed to a view... public ActionResult Create(EventViewModel model) { // ... } I want to be able to add to the "Attendants" Collection from the View. The code to add it works just fine - but how can I ensure that the View model retains the list? Is there any way to do this without saving/opening/saving etc? I am calling my addition method via jQuery $.load. public void Insert(Guid attendant) { // add the attendant to the attendees list of the model - called via $.load } I would also like to add there is no database. There is no storage persistence other than plain files.

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  • Render Html from a lambda in MVC

    - by Thad
    I have the following code to generate a list and will allow developers to customize the output if needed. <% Html.List<MyList>(item => item.Property).Value(item => return "<div>" + item.Property + "<br/>" + item.AnotherProperty + "</div>").Render() %> This is not ideal, how can I allow the developers to add the html similar to other controls. <% Html.List<MyList>(item => item.Property).Value(item => %> <div><%=item.Property%><br/><%=item.AnotherProperty%></div><%).Render() %> This way is much cleaner and standard with the rest of mvc.

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  • MVC4 link automatically redirected to default INDEX page/action even if defined action name with controller

    - by Raj Tamakuwala
    i am creating web mobile application in mvc4. My problem is when I click on particular link in my application,it works well, but sometimes it automatically redirected to INDEX page that is set as default page in global.asax as routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults ); Now I don't know why its automatically redirected to INDEX page,even if I have already defined controller and action name where it show redirected as, <a href='@(Url.Action( "ActivityWall", "Home"))' > </a> logically it should redirect to "ActivityWall" page,which it does.but sometime only it goes to INDEX page.then when I clear my cookie problem will again solved but after some time it again start redirecting to INDEX page. I also posted question related to cookies issue yesterday,but I think that is nit main issue. can someone help please ?

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  • view state in ASP.NET MVC Application

    - by Shetty
    Hi, I have read that viewstate is not there in asp.net MVC application. I am doing model validation. Now if i have two text boxes on my page,and i am doing required filed validation for both of them in model. This validation is done on server side on click of a button. I will fill one text box and click on submit button. It does the validation and returns the result saying second field is required. At this time value of the first text box is retained. So can you tell me how this text box is retaining the value even after postback?

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  • AddAllAttributes method spring mvc

    - by Nick Robertson
    I have two lists List<User> list_of_users=new ArrayList<User>(); List<String> list_of_attributes=new ArrayList<String>(); When i try to use the following lines of code: model.addAttribute("takeattributes",list_of_users); model.addAttribute("takeattributes",list_of_attributes); I realise that it keeps only the second list (list_of_attributes) and the first deleted. I was wondering how to keep both of these two lists in the model.Is this possible to be happened?Is the AddAllAttributes method what i need?If yes can anyone explain me how the AddAllAttributes method is working.I look at the spring mvc documentation but i didn't really understand.

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  • Exceptions in ASP.MVC

    - by George
    Hello guys, I'm here again with another question about MVC. Here is the deal. I have a simple table/class with an Id and a Name. Names suppossed to be unique, and are modeled like that in the DB. I created my controller and everything just works fine. But if I try to insert a name that already exists, an exception should be thrown. I'm just not finding what is the correct kind of exception and it's namespace. The error must be coming from the DB, so... Any ideas? Thanks

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  • Sending an array of complex objects in the get string in C# ASP.NET MVC

    - by Mr Snuffle
    Hi, I want to send an array of objects in the get request string. I know this isn't the optimal solution, but I really just want to get this up and running. If I have a class, something like this public class Data { public int a { get; set; } public int b { get; set; } } public class RequestViewData { public IList<Data> MyData { get; set; } } I thought I could bind the MVC route to a web request like this http://localhost:8080/Request?MyData[0].a=1&MyData[0].b=2&MyData[1].a=3&[MyData[1].b=4 But all this does is create an array of two data objects without populating the values 1,2, 3 or 4. Is there a way to bind complex objects arrays?

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  • Best practice for using web services (ASP.MVC)

    - by eqiz
    Basically what I have is web services returning data in xml format. Once I do a call to a webservice to retrive data from web service function (GetUserList) i want to take that data and then dymaically display (no postback) the resulting information. I know several ways of doing this: webservice sends data back to javascript, javascript then parses, replaces strings or text inside a div or child, or take the information retrieved and then put it into html table format through javascript. Those are some of the idea's i've came up with, does anyone know the best practice to do this? Using ASP.MVC (.Net)

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  • Handling Exceptions that happen in a asp.net MVC Controller Constructor

    - by Jason
    What's the best way to handle exceptions that happen from within a controller's constructor? All I can think of to do is use Application_OnError() or put a try/catch in my ControllerFactory. Neither of these solutions seem ideal. Application_OnError is to broad - I have some non-mvc content in the site that has its own error handling. Using a try/catch block seems kinda hacky. If I'm serving different content type -html/text/json/rss.... I would like to be able to handle the exception from within the action method instead of having to write all kinds of conditions to determine what kind of error message to serve. Am I missing something here, or has anyone else dealt with this?

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  • Need an Asp.net MVC Application solution

    - by Daoming Yang
    I have implemented a small ordering and stock control system (for internal using) with the MVC 2 framework. Now my friends, they want to have a website to present the existing products for their customers. I know, I know they will ask me to do this one day. So in the beginning, I have made the controller name to start with "Admin". But now I am not sure the best way to implement their requirements. Could you advise me? 1.For the security reason, I did not allowed anonymous user to access the website a part from the CSS and image files. My question is the controllers' name are not folders' name, how could I set this up? 2.I'm planning to put the admin section into an "area" and will it be a good way to go? Can anyone provide me some suggestions. Many thanks.

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  • Non-string role names in ASP.NET MVC?

    - by MikeWyatt
    ASP.NET MVC has good support for role-based security, but the usage of strings as role names is maddening, simply because they cannot be strongly-typed as enumerations. For example, I have an "Admin" role in my app. The "Admin" string will now exist in the Authorize attribute of my action, in my master page (for hiding a tab), in my database (for defining the roles available to each user), and any other place in my code or view files where I need to perform special logic for admin or non-admin users. Is there a better solution, short of writing my own authorization attribute and filter, that would perhaps deal with a collection of enumeration values?

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  • Combining features from other projects in an ASP.NET MVC application

    - by Katie D
    Hello, I am writing an ASP.NET MVC application that combines a set of features from existing applications. The new application is suppose to use UI features and logic created (especially for this purpose) in the existing applications. For that reason I wanted to create in the existing applications some kind of a "blackbox" that I will be able to drop in my new application along with a matching connection string, and it will work independently, binding data on it's own. I thought about using partial views, but I am having trouble with passing the model data to it, since the controller of the new application should not know about the model of the existing applications. I can not use ASP.NET WebForms, since my application should be a "postback-less" application, and ASP.NET AJAX toolkit or frameworks alike are out of the question. Any help would be greatly appreciated. Thank you, Katie

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  • How useful is a 'pure' MVC implementation?

    - by Matt1776
    I work at a company that provides custom made 'CRM'-like software. We are currently redesigning/redeveloping the software with the hopes that it will look more modern and be easier to develop and customize for future clients. Currently it takes a long time to customize each new application. There is a presumption that the reason it takes so long is because of the amount of business logic that is present in the 'view' layer. To some extent I can vouch for this being true, but symptoms don't always reliably point out a cause. There was a suggestion that if we just move the business logic to the controller layer and use pure view (we use java J2EE and struts) as in implementing struts tags instead of calling the bean layer and iterating objects right on the jsp - etc etc. Before I start advocating we go forward with this, I wanted to get a feeling for what other people thought. Does a "pure" implementation of the MVC (especially emphasis on decoupling the controller and the view) provide a cleaner, easier to develop and change code base?

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  • ASP.NET MVC Persisting mdoel's ID value when Editing

    - by user295017
    public Edit(int? id){ /* Codes */ } [HttpPost] public Edit(Item model){ /* Codes */ } I retrieve a copy of Item in the first Edit method, which would contain a value for ItemID. But when it gets to the HttpPost method, the id value's lost. If switched to public Edit(int? ItemID){ /* Codes */ } [HttpPost] public Edit(Item model){ /* Codes */ } this way ItemID can be persisted in the Item model. But is this a good way to handle it? Will ASP.NET MVC always be able to know that it needs to plug "ItemID" into Item? and are there other ways to persist the ID value? Thanks.

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  • MVC - Same URL, multiple views

    - by Amati
    Hi, Is it considered bad practice to have multiple views for same URL in MVC, based on different user roles? For example: http://www.domain.com/ViewProductID/123 will show a "normal" product page for a regular user and it will show an "enhanced" (product stats, ability to edit title etc..) version to someone logged in as admin. If it's bad practice, why? If it's ok, what's the best way to implement it? 2 separate templates or 1 template scattered with if..else? Thanks!

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  • Images' site don't loading with a specific url in mvc

    - by Ivan90
    Hi guys, I'm using ASP.NET MVC 1.0 and I try to create a personal blog! I have a problem with an url that it has to show all post wrote in a specific year and specific month. My url is look like(http://localhost:2282/Blog/Archive/2010/5). So... it work correctly, infact it show all record that have year=2010 and month=5 but my problem is that when I use this url, images in total my site are no longer loading. I have this problem only with this url's type. I think that the problem maybe is my maproute? routes.MapRoute( "ArchiveRoute", "Blog/Archive/{anno}/{mese}", new { controller = "Blog", Action = "Archive",anno = @"\d{4}", mese = @"\d{2}" } ); Why images don't loading with this url? Thanks

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  • Maintaining the query string in ASP.Net MVC

    - by Mantorok
    Hi all Just beginning my journey in ASP.Net MVC and I have a query about something before I dig myself in too deep. I have a table, which is paged, and I have 2 controls above the table: Dropdown that defines order of the results and apply button next to it Textbox that defines a filter and apply button next to it What I need to achieve is that if the user changes the order or adds a filter I fire of an AJAX call to my action like such: /Membership/Users?sort=value&filter=value&page=pagenumber. So my controller action is: // GET Membership/Users?sort=&filter=&page= public ActionResult Users(string sort, string filter, string page) So I have 3 questions: Is this the correct approach? What would be the best way to ensure that the query string is maintained, bearing in mind that the action will nearly always be called by Jquery/Ajax functions? If I wanted to link directly to this action passing the arguments would I need to hard-code the querystring? Thanks

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  • Creating a standalone ASP.NET MVC application for Windows XP

    - by Robert Harvey
    Is there a way to create an installable (ideally XCopy installable) version of an ASP.NET MVC application that will run in a standalone fashion on a Windows XP machine? I don't mind installing SQL Server Express for this purpose, so I guess the question boils down to this: Can the Cassini web server that comes with Visual Studio 2008 be bundled with the application? Or are there other options? NOTE: The installation is for demo purposes only, so there are no licensing problems. Also, I am suggesting Cassini because I don't know of a way to install IIS7 on Windows XP. I can't do major hackage on the registry to get this to work.

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  • Keeping asp.net mvc site IIS6 always ready to accept requests

    - by Andrew Florko
    I have asp.net mvc intranet site that is deployed to IIS6. Site is used rarely so app pool tends to shutdown. When user click the page for the very first time 5-10 seconds are passed till page appears (app pool started and site is compiled). Situation repeats for the next page and so on. AFAIK IIS7 has option to disable App pool shutdown but IIS6 lacks it. Nowadays i have special utility that pings site periodically (10 pages) in order to determine if pages are available and keeps site always ready for users this way. Is it normal or may be I've missed something in IIS6 configuration? Do you use such pinger apps in production to notify support/admins if site is not available? Thank you in advance!

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  • asp.net mvc default model binding problem

    - by csetzkorn
    I have some problems with ASP.NET MVC’s default model binder. The View contains HTML like this: <input name="SubDTO[0].Id" value="1" type="checkbox"> <input name="SubDTO[1].Id" value="2" type="checkbox"> This is my simplified ‘model’: public class SubDTO { public virtual string Id { get; set; } } public class DTO { public List<SubDTO> SubDTOs { get; set; } public DTO() { SubDTOs = new List< SubDTO>(); } } All this works fine if the user selects at least the first checkbox (SubDTO[0].Id). The controller ‘receives’ a nicely initialised/bound DTO. However, if the first check box is not selected but only, for example, SubDTO[1].Id the object SubDTOs is null. Can someone please explain this ‘strange’ behaviour and how to overcome it? Thanks. Best wishes, Christian

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  • MVC-3 User-Image Management - Best Practices

    - by Rob
    Hello Experts, Developing using MVC-3, Razor, C# Been searching around and cannot find advice I'm looking for. My site will contain user-uploaded images (possibly a high number). What is the best practice for managing these pictures (placement, breakdown into sub-folders, etc...)? Where do I place them that will prevent them from getting accidentally blown away if I republish my site periodically? If there are any good articles or blog posts, that would be helpful. Also, any advice/tips anyone wants to add would be great. Thanks for your time! Rob EDIT Also would like to know what people do to prevent hot linking.

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  • fluent nhibernate not caching queries in asp.net mvc

    - by AWC
    I'm using a fluent nhibernate with asp.net mvc and I not seeing anything been cached when making queries against the database. I'm not currently using an L2 cache implementation. Should I see queries being cached without configuring an out of process L2 cache? Mapping are like this: Table("ApplicationCategories"); Not.LazyLoad(); Cache.ReadWrite().IncludeAll(); Id(x => x.Id); Map(x => x.Name).Not.Nullable(); Map(x => x.Description).Nullable(); Example Criteria: return session .CreateCriteria<ApplicationCategory>() .Add(Restrictions.Eq("Name", _name)) .SetCacheable(true); Everytime I make a request for an application cateogry by name it is hitting the database is this expected behaviour?

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  • ASP MVC dynamic fields in editor

    - by Michael Pardo
    I have a form which will include some optional questions that need to asked of the user. In my model it may look like pubic Dictionary<String, String> Questions { get; set; } where the key is the label and value is the text box. How can I create and populate controls for this? I'm new to ASP MVC, but it makes sense that something like this would be built in. Is there a built in way to do this, or do I have to implement it myself? It seems like there should be a helper for it, since you don't really want to put this kind of code in the view. I've tried Html.EditorFor(model => model.Questions); but it just spits out "[key, value]" to the view.

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  • Converting ASP.NET MVC to n-Tiered Architecture

    - by Jeff
    I just built an application using ASP.NET MVC. The programmers at my company want to build all future modules using n-Tiered (Presentation Layer, Business Logic Layer, Data Access Layer) architecture. I am not the programmer and need to know why this makes sense? Do I have to completely rewrite the entire code or can it be converted? We are building an HRIS system with Business Intelligence. Somebody please explain why or why not this approach does or does not make sense.

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  • Affordable, Stable, ASP.NET MVC Hosting Exist?

    - by Chad
    I'm using webhost4life shared hosting right now. They have a 99.99% up-time guarantee, but it is definitely not. Their support has been good when I do contact them, but it's just not stable. The site will just go down at random times for 5-10 minutes at a time. I know I'm on shared hosting, but I was hoping it would be more stable than it is. My app isn't at the point where it would need dedicated hosting yet, if the shared was stable enough. Any affordable hosting that you can vouch for (that supports ASP.NET MVC)?

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