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• A typical lifecycle of a Hibernate object in a web app - ?

  - by EugeneP

  Describe please a typical lifecycle of a Hibernate object (that maps to a db table) in a web app. Suppose, you create a new instance of an object and persist in the db. But during the app lifetime you'll be working on a detached object and finally you need to update it in the database, for example on exit. How does it look like with hibernate and spring? p.s. Can transactions and sessions live between servlet transitions? So that we opened 1 session and use it in all servlets without a need to reopen it?

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• DataContractJsonSerializer ReadObject Exception

  - by Dan Appleyard

  I am following the accepted answer of ASP.NET MVC How to pass JSON object from View to Controller as Parameter. Like the original question, I have a simple POCO. Everthing works fine for me up until the DataContractJsonSerializer.ReadObject method. I am getting the following exception: Expecting element 'root' from namespace ''.. Encountered 'None' with name '', namespace ''. Public Overrides Sub OnActionExecuting(ByVal filterContext As ActionExecutingContext) If filterContext.HttpContext.Request.ContentType.Contains("application/json") Then Dim s As System.IO.Stream = filterContext.HttpContext.Request.InputStream Dim o = New DataContractJsonSerializer(RootType).ReadObject(s) filterContext.ActionParameters(Param) = o Else Dim xmlRoot = XElement.Load(New StreamReader(filterContext.HttpContext.Request.InputStream, filterContext.HttpContext.Request.ContentEncoding)) Dim o As Object = New XmlSerializer(RootType).Deserialize(xmlRoot.CreateReader) filterContext.ActionParameters(Param) = o End If End Sub Any ideas? Thanks

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• Anybody using Orchard CMS?

  - by Clarence Klopfstein

  This question is a bit subjective in nature, but I am unsure if there is a better place to ask this in the family of sites. Is anybody using the new Orchard CMS on a public facing site? For those that don't know, Orchard is basically the replacement for Oxite. It is an ASP.NET MVC based CMS. I've pulled it down and compiled it, but it seems pretty far away from being used on an actual site. If you are using it, would love to know.

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• jQuery AJAX see redirect as status 200 not 302?

  - by Max Fraser

  I am using jQuery and the jQuery.form plugin to submit my form (also using ASP.Net MVC). Problem is the user is in a section of the site that uses forms authentication and if their auth cookie expires during their time on the page instead of getting back a status of 302, which would be the redirect to the login page, I still get 200? In FireBug I see the 302 Found and then my login page is served next as a 200 which is the status code sent back to my Ajax call. How do I detect that they have been logged out if I never see the 302 sent back to the jQuery form plugin?

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• FSharp.Core.sigdata not found alongside FSharp.Core

  - by Mauricio Scheffer

  I'm trying to use F# for an ASP.NET MVC application. One my controller actions sends an F# list to the view, so I write: <%@ Page Language="C#" Inherits="ViewPage<FSharpList<int>>" %> Of course, for this to work, I have to add Microsoft.FSharp.Collections to the namespaces element in my web.config: <add namespace="Microsoft.FSharp.Collections"/> and add a reference to FSharp.Core, in the assemblies element: <add assembly="FSharp.Core, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/> As soon as I add this assembly reference, every view (whether it uses an F# type or not) fails with this error: error FS1221: FSharp.Core.sigdata not found alongside FSharp.Core I can work around this by not having any F# specific types in my views, but what's the reason for this error? Also, where's FSharp.Core.sigdata ? It's not in my GAC and I can't find it anywhere.

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• Custom app_offline.htm file during publish

  - by Charlino

  When I publish my ASP.NET MVC application it generates a app_offline.htm file to take the site offline while it updates the website and then deletes the file once the publish is successful. This is cool and I really like the idea, but I want to create my own custom app_offline.htm file that the publish action is aware of and put it somewhere where it doesn't effect my development site - i.e. it doesn't sit in the root of my development site rendering it offline all the time. TIA, Charles EDIT: From the comments on Scott Gu's post about app_offline.htm, it seems that customization of the app_offline.htm file wasn't possible with VS 2005 - has this changed with VS 2008 and now VS 2010?

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• creating the icalendar feed and accessing it via webcal: protocal

  - by Sagar

  Hi i completed creating i calendar feed in asp.net mvc.Basically the op is the file with .ics extensions.I am able to open my file in mozilla sunbird(calendar reader software) and view the milestones lists.Now when i want to open it with google calendar i get an error.How can i synchronize mi ical file with google calendar.Do i need to use webcal:\ protocol to achive that.Basically my feed link should apper some thing like this webcal://proj2009.basecamphq.com/feed/global_ical?token=457bd123e18d instead of controller/action/id(which i have now).There aint enough resource on the web for this one.Anyone pls help. Thanks in Advance.

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• jQuery button click refresh of jqGrid only firing once

  - by The Matt

  I have the following jQuery code which I'm using to populate a jqGrid. It works perfectly posting to my ASP.NET MVC page on the first click of the button. My problem is, any other clicks past the first it seems to run through the jquery code when clicking the button but it never makes it to the POST page. Any ideas why? <script type="text/javascript"> $(document).ready(function() { $('#btnSubmit').click(function() { /* Refreshes the grid */ $("#list").jqGrid({ /* The controller action to get the grid data from */ url: '/CRA/AddPart', data: { partNumber: "123"}, datatype: 'json', mtype: 'GET', /* Define the headers on the grid */ colNames: ['col1', 'col2', 'col3', 'col4'], /* Define what fields the row columns come from */ colModel: [ { name: 'col1', index: 'invid', width: 290 }, { name: 'col2', index: 'invdate', width: 290 }, { name: 'col3', index: 'amount', width: 290, align: 'right' }, { name: 'col4', index: 'tax', width: 290, align: 'right'}], height: 'auto', rowNum: 10, rowList: [10, 20, 30], sortname: 'id', sortorder: "desc", viewrecords: true, imgpath: '../../Scripts/jgrid/themes/steel/images', caption: 'Core Return Authorization Contents:', cellEdit: true }); }); }); </script>

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• TextBoxFor rendering to HTML with prefix on the ID attribute

  - by msi

  I have an ASPNET MVC 2 project. When I use <%= Html.TextBoxFor(model => model.Login) %> the TexBoxFor will render as <input id="Login" name="Login" type="text" value="" /> Field in the model is [Required(ErrorMessage = "")] [DisplayName("Login")] public string Login { get; set; } Can I made id and name attribute with some prefix? Like <input id="prefixLogin" name="prefixLogin" type="text" value="" /> Thanks to all.

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• 3-tier architecture v. 3-server architecture

  - by kawai

  I'm building a traditional .NET MVC site, so I've got a natural 3-tier software architecture setup (presentation in the form of Views, business layer in the controller, and data layer in the models and data access layer). When I've deployed such sites, it usually goes either on one server (where the web site and db live), or two servers (a web server and a separate db server). How does one go about a 3-server architecture (WEB, APP, and DB)? Would the web server just have the presentation (e.g. the physical View/aspx pages), the app server would hold the config file and bin folder, and the db server would remain as is? My question is essentially, can you simply move the /bin and all app logic onto a separate server from the presentation views? If so, how do you configure the servers to know where to look? If there's a good primer somewhere or someone can give me the lowdown, I'd be forever indebted.

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• Error Running MVC2 application in IIS on .NET 4.0

  - by Matt Wrock

  I recently installed the RTM version of 4.0. I now receive an error when running MVC2 websites in a .net 4 app pool. The error is "User is not available in this context." All works fine on .net 2.0 app pools or if I run the app within the VS10 web server. The error only occurs in IIS on .net 4.0. To verify that it was not something specific to my app, I created a new MVC test app from the VS template and even that app encounters this error. My next step is to reinstall .net 4.0. Has anyone else seen this error?

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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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• Custom Validation with MVC2 and EF4

  - by csharpnoob

  Hi, on ScottGu's Blog is an Example how to use MVC2 Custom Validation with EF4: http://weblogs.asp.net/scottgu/archive/2010/01/15/asp-net-mvc-2-model-validation.aspx So here the Problem: When the Designer in VS2010 creates the Objects for the DB, along to the example you have to add [MetadataType(typeof(Person_validation))] Annotation to that class. But when i change anything in the Designer all these Annotations are lost. Is it possible to keep self made changes to the edmx file, or is there any better way of applying System.ComponentModel.DataAnnotations to the generated Entities? Thanks.

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• ASP.NET Ajax.BeginForm Posts Even If Validation Fails

  - by Acoustic

  I'm just overlooking something simple... but my form, which is an Ajax form, always submits even if the validation fails. I'm not using jQuery validation, just the standard .NET MVC validation. Each of the field failing get show the validation message and highlight the field, but the form just submits anyway. Is there an OnBegin script I can call to prevent the form from submitting if there are errors? Thanks for the help! Ajax.BeginForm("EditUserProfile", new AjaxOptions { HttpMethod = "Post", OnComplete = ToggleViews", UpdateTargetId ="userProfileContainer" })

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• How to use and/or localize DisplayAttribute with ASP.NET MVC2?

  - by asp_net

  I am trying to figure out how to get the DisplayAttribute in my MVC 2 ViewModel to work with the Html.LabelFor() helper. Neither public class TestModel { [Display(ResourceType = typeof(Localization.Labels))] public string Text { get; set; } } nor public class TestModel { [Display(Name = "test")] public string Text { get; set; } } seem to work. Localizing the Required Attribute works as expected: [Required(ErrorMessageResourceName = "Test", ErrorMessageResourceType = typeof(Localization.Labels))] I am using VS2010 RC. Has anybody got that running?

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• How to Validate mac address & ipaddress in client side(using javascript) & server side(using c#)

  - by amexn

  My team doing a project related to network using Asp.net MVC(c#). I need to validate mac address & ipaddress in client side(using javascript) & server side(using c#). I didn't get a good solution for validating mac address & ip addresss. I searched google for finding a good user interface for validating mac address by giving colon after two number eg: "XX:XX:XX:XX:XX:XX" by using Masked Input.Please give reference/guidance for implementing this. Any jquery plugin for implementing Masked Input.

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• Pass Dictionary of routeValues to ActionLink

  - by Graham

  All, Getting to grips with ASP.NET MVC. So far, so good, but this one is a little nuts. I have a view model that contains a dictionary of attributes for a hyperlink, used like this: menu = model variable Html.ActionLink(Html.Encode(menu.Name), Html.Encode(menu.Action), Html.Encode(menu.Controller), menu.Attributes, null) The problem is the position of "menu.Attributes" expects an object in the form: new { Name = "Fred", Age=24 } From what I can tell, this anonymous object is actually converted to a dictionary via reflection anyway BUT you can't pass a dictionary to it in the first place!!! The Html generated for the link simply shows the dictionary type. How on earth do I get round this? The whole point is that its general and the controller can have set the menu.Attributes previously....

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• jqGrid adding new row with XML Data

  - by mahr.g.mohyuddin

  Hi Everyone, I am using jQGrid in my ASP.NET MVC application with add row feature. My problem is I have to save XML data in some of the row fields. But while posting the new row with some fields having plain xml, to server I get Internal server error. By default jqGrid perhaps expects json or text data to be posted on server while adding a new row. I used beforeSubmit method for workaround to convert xml first to json and then send to server, but while converting json back to xml I lose the orginal structure of the xml. FYI: I used JsonReaderWriterFactory on server to convert it back. Your help will be highly appreciated. Thanks.

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• MVC2 Ajax Form does unwanted page refresh

  - by Kay

  Hi, I am pretty new to MVC. I have my first Ajax Form here: <div id="test"></div> <div id="MainChatMenu"> <% using (Ajax.BeginForm("SendMessage", "MainChat", new AjaxOptions { UpdateTargetId="test"})) { %> <input id="chatMessageText" type="text" maxlength="200" /> <input type="submit" value="Go"/> <% } %> Now, if I click the submit button, the page is reloading, goint to mysite/controller/action. I thought that the default behaviour of the Ajax.BeginForm was exactly not to do that? Where's my newbie mistake? My Controller is called correctly, but data passing also doesn't work. Probably because of the same mistake? Here's the code: public class MainChatController : Controller { [AcceptVerbs(HttpVerbs.Post)] public EmptyResult SendMessage(FormCollection formValues) { return new EmptyResult(); } }

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• jquery datatables add checkbox with ajax server side response

  - by dotneter

  I am using C# ASP .NET MVC and ajax calls. I am able to get the display of the table along with all features. But, I don't understand how do I add a checkbox and button. I have tried dom-checkbox as well but can't get it to work. Any help is appreciated. My code looks like this: $(document).ready(function () { $('#personTable').dataTable({ "bJQueryUI": true, "sPaginationType": "full_numbers", "bProcessing": true, "bServerSide": true, "sAjaxSource": "/Home/GetCustomData", "aoColumns": [ { "sSortDataType": "dom-checkbox", "sTitle": "Select", sName": "" }, { "sName": "ID", "sTitle": "ID" }, { "sName": "FirstName", "sTitle": "First Name" }, { "sName": "Email", "sTitle": "Email"}] }); }); My Html is : [table border="1" id="personTable" class="display"] [/table]

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• Spark VS 2010 intellisense

  - by mare

  I was thinking about switching one of my projects (and after that subsequently other projects too) to Spark View Engine but after todays research I ran into problem of a lack of Intellisense for Visual studio 2010. Not only that but it seems that the project is not maintained regularly. So I'm left with a feeling that I should not choose Spark at this time yet. However, apparently NHaml has the same "issues" too. I know it is discussed in more detail here http://stackoverflow.com/questions/1451319/asp-net-mvc-view-engine-comparison but I would still like you thoughts on what to choose or just stay with WebForms view engine for now?

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• Routing to the actions with same names but different parameters

  - by zerkms

  I have this set of routes: routes.MapRoute( "IssueType", "issue/{type}", new { controller = "Issue", action = "Index" } ); routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults ); Here is the controller class: public class IssueController : Controller { public ActionResult Index() { // todo: redirect to concrete type return View(); } public ActionResult Index(string type) { return View(); } } why, when i request http://host/issue i get The current request for action 'Index' on controller type 'IssueController' is ambiguous between the following action methods: I expect that first one method should act when there is no parameters, and second one when some parameter specified. where did i made mistake? UPD: possible duplicate: http://stackoverflow.com/questions/436866/can-you-overload-controller-methods-in-asp-net-mvc

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• The parameters dictionary contains a null entry for parameter 'productId' of non-nullable type 'Syst

  - by Naim

  Hi Guys, I am trying to implement an edit page in order administrator to modify data in database.Unfortunately I am encountering an error. The code below: public ViewResult Edit(int productId) { // Do something here } but I am getting this error: "The parameters dictionary contains a null entry for parameter 'productId' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ViewResult Edit(Int32)' in 'WebUI.Controllers.AdminController'. To make a parameter optional its type should be either a reference type or a Nullable type. Parameter name: parameters" I changed my route in Global.asax.cs like this: routes.MapRoute( "Admin", "Admin/{action}/{ productId}", new { controller = "Admin", action = "Edit", productId= "" } ); but still I am getting the error Thanks for your help! Naim

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• RenderPartial a view from another controller (and in another folder)

  - by George

  Hey MVC experts. I two database entities that i need to represent and i need to output them in a single page. I have something like this Views Def ViewA ViewB Test ViewC I want to ViewC to display ViewA, which displays ViewB. Right now i'm using something like this: // View C <!-- bla --> <% Html.RenderPartial(Url.Content("../Definition/DefinitionDetails"), i); %> // View A <!-- bla --> <% Html.RenderPartial(Url.Content("../Definition/DefinitionEditActions")); %> Is there a better to do this? I find that linking with relative pathnames can burn you. Any tips? Any chance I can make somehtiing like... Html.RenderPartial("Definition","DefinitionDetails",i); ? Thanks for the help

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• Ideas for OpenSource CMS in ASP.NET MVC

  - by rajesh pillai

  I am in the process of collecting ideas for building an opensource CMS based on ASP.net framework. I have choosen ASP.NET MVC with Jquery as the tool to develop this. I have made this as community wiki. Background: Most of the good CMS that is available is built on PHP, though off late CMS built on ASP.net framework seems to be cropping up. I would like to collect ideas/suggestion/expectations from an opensource CMS system for ASP.net platform. I am looking for expectation from technology and features that you wish could find in a modern CMS and any other thoughts/ideas that comes to your mind. Your input would be of great help in this direction. Meanwhile I am also reviewing many opensource CMS system built on ASP.net as well as MS Office Sharepoint to get ideas and I would update my findings here for your reference. The following are some of the opensource CMS/BlogEngines that I am in the process of reviewing. -Oxite (ASP.net MVC) : This is the new kid on the block -Wordpress -BlogEngine.net -Umbraco Some of the features that I can think of is noted below Simplified content creation Support Multiple content author Metadata feature Workflow engine Simplified deployment List based contents (sharepoint like) Customizable URL's Support content Caching Roles (contenauthor, contentpublisher etc) Support different types of content (like html, txt, document, image, videos) Skinnable (support extensible themes) Localization & Globalization Unlimited nesting of categories Readymade template for blog, forums,survey. Good documentation You can add your points or add some depth to any of the above feature.

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