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• Html.hiddenfor does not return value

  - by jackma1210

  Hi I have a template partial view, which used to render a model named VerificationCode, this model has a element 'CaptchaGeneratedText' which is hidden in the view and set value by Html.HiddenFor(m=m.CaptchaGeneratedText, captchaText), the problem is when view post, in the model validation the value of element 'CaptchaGeneratedText' is null, but it should not be as varant 'captchaText' has some value. meanwhile, the other element 'CaptchaUserInput' of this model does have value. Anybody have experienced similiar problem? Sorry I was unable to submit script file.

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• ASP.NET MVC - dropdown list post handling problem

  - by ile

  I've had troubles for a few days already with handling form that contains dropdown list. I tried all that I've learned so far but nothing helps. This is my code: using System; using System.Collections.Generic; using System.Linq; using System.Web; using CMS; using CMS.Model; using System.ComponentModel.DataAnnotations; namespace Portal.Models { public class ArticleDisplay { public ArticleDisplay() { } public int CategoryID { set; get; } public string CategoryTitle { set; get; } public int ArticleID { set; get; } public string ArticleTitle { set; get; } public DateTime ArticleDate; public string ArticleContent { set; get; } } public class HomePageViewModel { public HomePageViewModel(IEnumerable<ArticleDisplay> summaries, Article article) { this.ArticleSummaries = summaries; this.NewArticle = article; } public IEnumerable<ArticleDisplay> ArticleSummaries { get; private set; } public Article NewArticle { get; private set; } } public class ArticleRepository { private DB db = new DB(); // // Query Methods public IQueryable<ArticleDisplay> FindAllArticles() { var result = from category in db.ArticleCategories join article in db.Articles on category.CategoryID equals article.CategoryID orderby article.Date descending select new ArticleDisplay { CategoryID = category.CategoryID, CategoryTitle = category.Title, ArticleID = article.ArticleID, ArticleTitle = article.Title, ArticleDate = article.Date, ArticleContent = article.Content }; return result; } public IQueryable<ArticleDisplay> FindTodayArticles() { var result = from category in db.ArticleCategories join article in db.Articles on category.CategoryID equals article.CategoryID where article.Date == DateTime.Today select new ArticleDisplay { CategoryID = category.CategoryID, CategoryTitle = category.Title, ArticleID = article.ArticleID, ArticleTitle = article.Title, ArticleDate = article.Date, ArticleContent = article.Content }; return result; } public Article GetArticle(int id) { return db.Articles.SingleOrDefault(d => d.ArticleID == id); } public IQueryable<ArticleDisplay> DetailsArticle(int id) { var result = from category in db.ArticleCategories join article in db.Articles on category.CategoryID equals article.CategoryID where id == article.ArticleID select new ArticleDisplay { CategoryID = category.CategoryID, CategoryTitle = category.Title, ArticleID = article.ArticleID, ArticleTitle = article.Title, ArticleDate = article.Date, ArticleContent = article.Content }; return result; } // // Insert/Delete Methods public void Add(Article article) { db.Articles.InsertOnSubmit(article); } public void Delete(Article article) { db.Articles.DeleteOnSubmit(article); } // // Persistence public void Save() { db.SubmitChanges(); } } } using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using Portal.Models; using CMS.Model; namespace Portal.Areas.CMS.Controllers { public class ArticleController : Controller { ArticleRepository articleRepository = new ArticleRepository(); ArticleCategoryRepository articleCategoryRepository = new ArticleCategoryRepository(); // // GET: /Article/ public ActionResult Index() { ViewData["categories"] = new SelectList ( articleCategoryRepository.FindAllCategories().ToList(), "CategoryId", "Title" ); Article article = new Article() { Date = DateTime.Now, CategoryID = 1 }; HomePageViewModel homeData = new HomePageViewModel(articleRepository.FindAllArticles().ToList(), article); return View(homeData); } // // GET: /Article/Details/5 public ActionResult Details(int id) { var article = articleRepository.DetailsArticle(id).Single(); if (article == null) return View("NotFound"); return View(article); } // // GET: /Article/Create //public ActionResult Create() //{ // ViewData["categories"] = new SelectList // ( // articleCategoryRepository.FindAllCategories().ToList(), "CategoryId", "Title" // ); // Article article = new Article() // { // Date = DateTime.Now, // CategoryID = 1 // }; // return View(article); //} // // POST: /Article/Create [ValidateInput(false)] [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create(Article article) { if (ModelState.IsValid) { try { // TODO: Add insert logic here articleRepository.Add(article); articleRepository.Save(); return RedirectToAction("Index"); } catch { return View(article); } } else { return View(article); } } // // GET: /Article/Edit/5 public ActionResult Edit(int id) { ViewData["categories"] = new SelectList ( articleCategoryRepository.FindAllCategories().ToList(), "CategoryId", "Title" ); var article = articleRepository.GetArticle(id); return View(article); } // // POST: /Article/Edit/5 [ValidateInput(false)] [AcceptVerbs(HttpVerbs.Post)] public ActionResult Edit(int id, FormCollection collection) { Article article = articleRepository.GetArticle(id); try { // TODO: Add update logic here UpdateModel(article, collection.ToValueProvider()); articleRepository.Save(); return RedirectToAction("Details", new { id = article.ArticleID }); } catch { return View(article); } } // // HTTP GET: /Article/Delete/1 public ActionResult Delete(int id) { Article article = articleRepository.GetArticle(id); if (article == null) return View("NotFound"); else return View(article); } // // HTTP POST: /Article/Delete/1 [AcceptVerbs(HttpVerbs.Post)] public ActionResult Delete(int id, string confirmButton) { Article article = articleRepository.GetArticle(id); if (article == null) return View("NotFound"); articleRepository.Delete(article); articleRepository.Save(); return View("Deleted"); } [ValidateInput(false)] public ActionResult UpdateSettings(int id, string value, string field) { // This highly-specific example is from the original coder's blog system, // but you can substitute your own code here. I assume you can pick out // which text field it is from the id. Article article = articleRepository.GetArticle(id); if (article == null) return Content("Error"); if (field == "Title") { article.Title = value; UpdateModel(article, new[] { "Title" }); articleRepository.Save(); } if (field == "Content") { article.Content = value; UpdateModel(article, new[] { "Content" }); articleRepository.Save(); } if (field == "Date") { article.Date = Convert.ToDateTime(value); UpdateModel(article, new[] { "Date" }); articleRepository.Save(); } return Content(value); } } } and view: <%@ Page Title="" Language="C#" MasterPageFile="~/Areas/CMS/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Portal.Models.HomePageViewModel>" %> <asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> Index </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <div class="naslov_poglavlja_main">Articles Administration</div> <%= Html.ValidationSummary("Create was unsuccessful. Please correct the errors and try again.") %> <% using (Html.BeginForm("Create","Article")) {%> <div class="news_forma"> <label for="Title" class="news">Title:</label> <%= Html.TextBox("Title", "", new { @class = "news" })%> <%= Html.ValidationMessage("Title", "*") %> <label for="Content" class="news">Content:</label> <div class="textarea_okvir"> <%= Html.TextArea("Content", "", new { @class = "news" })%> <%= Html.ValidationMessage("Content", "*")%> </div> <label for="CategoryID" class="news">Category:</label> <%= Html.DropDownList("CategoryId", (IEnumerable<SelectListItem>)ViewData["categories"], new { @class = "news" })%> <p> <input type="submit" value="Publish" class="form_submit" /> </p> </div> <% } %> <div class="naslov_poglavlja_main"><%= Html.ActionLink("Write new article...", "Create") %></div> <div id="articles"> <% foreach (var item in Model.ArticleSummaries) { %> <div> <div class="naslov_vijesti" id="<%= item.ArticleID %>"><%= Html.Encode(item.ArticleTitle) %></div> <div class="okvir_vijesti"> <div class="sadrzaj_vijesti" id="<%= item.ArticleID %>"><%= item.ArticleContent %></div> <div class="datum_vijesti" id="<%= item.ArticleID %>"><%= Html.Encode(String.Format("{0:g}", item.ArticleDate)) %></div> <a class="news_delete" href="#" id="<%= item.ArticleID %>">Delete</a> </div> <div class="dno"></div> </div> <% } %> </div> </asp:Content> When trying to post new article I get following error: System.InvalidOperationException: The ViewData item that has the key 'CategoryId' is of type 'System.Int32' but must be of type 'IEnumerable'. I really don't know what to do cause I'm pretty new to .net and mvc Any help appreciated! Ile EDIT: I found where I made mistake. I didn't include date. If in view form I add this line I'm able to add article: <%=Html.Hidden("Date", String.Format("{0:g}", Model.NewArticle.Date)) %> But, if I enter wrong datetype or leave title and content empty then I get the same error. In this eample there is no need for date edit, but I will need it for some other forms and validation will be necessary. EDIT 2: Error happens when posting! Call stack: App_Web_of9beco9.dll!ASP.areas_cms_views_article_create_aspx.__RenderContent2(System.Web.UI.HtmlTextWriter __w = {System.Web.UI.HtmlTextWriter}, System.Web.UI.Control parameterContainer = {System.Web.UI.WebControls.ContentPlaceHolder}) Line 31 + 0x9f bytes C#

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• asp.net mvc jquery + tabs +jqgrid +jqgrid loaded only for first tab

  - by niao

  Greetings, I have a problem using jqgrid and jquery tab (I am coding in asp.net mvc) I have two tabs. Each tabs should contains jqgrid with different data. I specify tabs as follows: <script type="text/javascript"> $(document).ready(function() { $("#tabs").tabs(); getContentTab (1); }); function getContentTab(index) { var url='<%= Url.Content("~/Admin/GetWorkspaces") %>/' + index; var targetDiv = "#tabs-" + index; var ajaxLoading = "<img id='ajax-loader' src='<%= Url.Content("~/Content") %>/ajax-loader.gif' align='left' height='28' width='28'>"; $(targetDiv).html("<p>" + ajaxLoading + " Loading...</p>"); $.get(url,null, function(result) { $(targetDiv).html(result); }); } </script> <div id="tabs"> <ul> <li><a href="#tabs-1" onclick="getContentTab(1);">tab1</a></li> <li><a href="#tabs-2" onclick="getContentTab(2);">tab2</a></li> </ul> <div id="tabs-1"> </div> <div id="tabs-2"> </div> </div> As seen above GetWorkspaces action gets my tabs: public ActionResult GetWorkspaces(int id) { string viewName = string.Empty; switch (id) { case 1: viewName = "MarketplaceOfferView"; break; case 2: viewName = "MyMessagesView"; break; } return PartialView(viewName); } each of view is a partial view. In these partial views I have jqgrids specified as follows: <script type="text/javascript"> jQuery("#list").ready(function() { jQuery("#list").jqGrid({ url: '/Admin/GetGridData/', datatype: 'json', mtype: 'GET', colNames: ['Klient', 'Zapytanie', 'Atrakcyjnosc', 'Cena', 'Data poczatkowa', 'Data koncowa', 'Branza', 'Lokalizacja' ], colModel: [ { name: 'CompanyName', index: 'CompanyName', width: 150, align: 'left' }, { name: 'Content', index: 'ContactName', width: 300, align: 'left' }, { name: 'Rating', index: 'Address', width: 150, align: 'left' }, { name: 'Price', index: 'City', width: 150, align: 'left' }, { name: 'Price', index: 'City', width: 150, align: 'left' }, { name: 'Price', index: 'City', width: 150, align: 'left' }, { name: 'Price', index: 'City', width: 150, align: 'left' }, { name: 'Price', index: 'PostalCode', width: 100, align: 'left' } ], pager: jQuery('#pager'), rowNum: 100, rowList: [5, 10, 20, 50], sortname: 'Operator.FullName', sortorder: "asc", viewrecords: true, imgpath: '/scripts/themes/steel/images', caption: 'Historia moich wiadomosci', height:400 }); // .navGrid(pager, { edit: true, add: false, del: false, refresh: true, search: false }); }); </script> Historia moich wiadomosci <table id="list" class="scroll" cellpadding="0" cellspacing="0" width="100%"> </table> <div id="pager" class="scroll" style="text-align: center;"> </div> For second view I have an action: /Admin/GetGridDataForTab2/ THe problem is that I see a jqgrid only when I click on first tab. When I click on second tab the grid is not displayed and /Admin/GetGridData/ is not executed. Does anybody have an idea what is wrong?

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• .NET: Can I use DataContractJsonSerializer to serialize to a JSON associative array?

  - by Cheeso

  When using DataContractJsonSerializer to serialize a dictionary, like so: [CollectionDataContract] public class Clazz : Dictionary<String,String> {} .... var c1 = new Clazz(); c1["Red"] = "Rosso"; c1["Blue"] = "Blu"; c1["Green"] = "Verde"; Serializing c1 with this code: var dcjs = new DataContractJsonSerializer(c1.GetType()); var json = new Func<String>(() => { using (var ms = new System.IO.MemoryStream()) { dcjs.WriteObject(ms, c1); return Encoding.ASCII.GetString(ms.ToArray()); } })(); ...produces this JSON: [{"Key":"Red","Value":"Rosso"}, {"Key":"Blue","Value":"Blu"}, {"Key":"Green","Value":"Verde"}] But, this isn't a Javascript associative array. If I do the corresponding thing in javascript: produce a dictionary and then serialize it, like so: var a = {}; a["Red"] = "Rosso"; a["Blue"] = "Blu"; a["Green"] = "Verde"; // use utility class from http://www.JSON.org/json2.js var json = JSON.stringify(a); The result is: {"Red":"Rosso","Blue":"Blu","Green":"Verde"} How can I get DCJS to produce or consume a serialized string for a dictionary, that is compatible with JSON2.js ? I know about JavaScriptSerializer from ASP.NET. Not sure if it's very WCF friendly. Does it respect DataMember, DataContract attributes?

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• MVC2 client/server validation of DateTime/Date using DataAnnotations

  - by Thomas

  The following are true: One of my columns (BirthDate) is of type Date in SQL Server. This very same column (BirthDate) is of type DateTime when EF generates the model. I am using JQuery UI Datepicker on the client side to be able to select the BirthDate. I have the following validation logic in my buddy class: [Required(ErrorMessageResourceType = typeof(Project.Web.ValidationMessages), ErrorMessageResourceName = "Required")] [RegularExpression(@"\b(0?[1-9]|1[012])[/](0?[1-9]|[12][0-9]|3[01])[/](19|20)?[0-9]{2}\b", ErrorMessageResourceType = typeof(Project.Web.ValidationMessages), ErrorMessageResourceName = "Invalid")] public virtual DateTime? BirthDate { get; set; } There are two issues with this: This will not pass server side validation (if I enable client side validation it works just fine). I am assuming that this is because the regular expression doesn't take into account hours, minutes, seconds as the value in the text box has already been cast as a DateTime on the server by the time validation occurs. If data already exists in the database and is read into the model and displayed on the page the BirthDate field shows hours, minutes, seconds in my text box (which I don't want). I can always use ToShortDateString() but I am wondering if there is some cleaner approach that I might be missing. Thanks

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• Html.Action link and Html.RouteLink

  - by Sagar

  Even If the url is same can i go to different action using Html.RouteLink and Action Link.Like when i click on news link i will go to news details.The url of this page is http://localhost:1390/en-US/latestnews/125.Now if i select the ddl of language in the site header in this pagei need to go to the home page of the site.The ddl (on change) will take the same url but this time it needs to go to action in the sane controller.

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• ASP.NET MVC File Upload Error - "The input is not a valid Base-64 string"

  - by Justin

  Hey all, I'm trying to add a file upload control to my ASP.NET MVC 2 form but after I select a jpg and click Save, it gives the following error: The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or a non-white space character among the padding characters. Here's the view: <% using (Html.BeginForm("Save", "Developers", FormMethod.Post, new {enctype = "multipart/form-data"})) { %> <%: Html.ValidationSummary(true) %> <fieldset> <legend>Fields</legend> <div class="editor-label"> Login Name </div> <div class="editor-field"> <%: Html.TextBoxFor(model => model.LoginName) %> <%: Html.ValidationMessageFor(model => model.LoginName) %> </div> <div class="editor-label"> Password </div> <div class="editor-field"> <%: Html.Password("Password") %> <%: Html.ValidationMessageFor(model => model.Password) %> </div> <div class="editor-label"> First Name </div> <div class="editor-field"> <%: Html.TextBoxFor(model => model.FirstName) %> <%: Html.ValidationMessageFor(model => model.FirstName) %> </div> <div class="editor-label"> Last Name </div> <div class="editor-field"> <%: Html.TextBoxFor(model => model.LastName) %> <%: Html.ValidationMessageFor(model => model.LastName) %> </div> <div class="editor-label"> Photo </div> <div class="editor-field"> <input id="Photo" name="Photo" type="file" /> </div> <p> <%: Html.Hidden("DeveloperID") %> <%: Html.Hidden("CreateDate") %> <input type="submit" value="Save" /> </p> </fieldset> <% } %> And the controller: //POST: /Secure/Developers/Save/ [AcceptVerbs(HttpVerbs.Post)] public ActionResult Save(Developer developer) { //get profile photo. var upload = Request.Files["Photo"]; if (upload.ContentLength > 0) { string savedFileName = Path.Combine( ConfigurationManager.AppSettings["FileUploadDirectory"], "Developer_" + developer.FirstName + "_" + developer.LastName + ".jpg"); upload.SaveAs(savedFileName); } developer.UpdateDate = DateTime.Now; if (developer.DeveloperID == 0) {//inserting new developer. DataContext.DeveloperData.Insert(developer); } else {//attaching existing developer. DataContext.DeveloperData.Attach(developer); } //save changes. DataContext.SaveChanges(); //redirect to developer list. return RedirectToAction("Index"); } Thanks, Justin

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• Custom HTML attributes on SelectListItems in MVC2?

  - by blesh

  I have a need to add custom HTML attributes, specifically classes or styles to option tags in the selects generated by Html.DropDownFor(). I've been playing with it, and for the life of me I can't figure out what I need to do to get what I need working. Assuming I have a list of colors that I'm generating the dropdown for, where the option value is the color's identifier, and the text is the name... here's what I'd like to be able to see as output: <select name="Color"> <option value="1" style="background:#ff0000">Red</option> <option value="2" style="background:#00ff00">Green</option> <option value="3" style="background:#0000ff">Blue</option> <!-- more here --> <option value="25" style="background:#f00f00">Foo Foo</option> </select

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• ASP.NET - Extend gridview to allow filtering, sorting, paging, etc...

  - by Zach

  I have seen threads on many sites regarding extending the gridview control so obviously this will be a duplicate. But I haven't found any that truly extend the control to the extent that you could have custom sorting (with header images), filtering by putting drop downs or textboxes in header columns (on a column by column basis) and custom paging (one that doesn't return all records but just returns the ones requested for the given page). Are there any good tutorials that show the inner-workings of the gridview and how to override the proper functions? I've seen several snippets here and there but none seem to really work and explain things well. Any links would be appreciated. Thanks!

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• DropDownListFor does not select value if using int[] as value

  - by Iceman

  In my view <%= Html.DropDownListFor( x => x.Countries[ i ], x.CountryList )%> in my controller public int[ ] Countries { get; set; } public List<SelectListItem> CountryList { get; set; } When the forms gets posted there is no problem, the dropdown is populated and the values the user selects are posted. But when I try to load the form with already assigned values to the Countries[ ] it does not get selected.

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• Ninject 3.0 MVC kernel.bind error Auto Registration

  - by user295734

  Getting and error on kernel.Bind(scanner = ... "scanner" has the little error line under it in VS 2010. Cannot convert lambda expression to type 'System.Type[]' because it is not a delegate type Tyring to Auto Register like the old kernel.scan in 2.0. I can not figure out what i am doing wrong. Added and removed so many Ninject packages. completely lost, getting to be a big waste of time. using System; using System.Web; using Microsoft.Web.Infrastructure.DynamicModuleHelper; using Ninject; using Ninject.Web.Common; //using Ninject.Extensions.Conventions; using Ninject.Web.WebApi; using Ninject.Web.Mvc; using CommonServiceLocator.NinjectAdapter; using System.Reflection; using System.IO; using LR.Repository; using LR.Repository.Interfaces; using LR.Service.Interfaces; using System.Web.Http; public static class NinjectWebCommon { private static readonly Bootstrapper bootstrapper = new Bootstrapper(); /// <summary> /// Starts the application /// </summary> public static void Start() { DynamicModuleUtility.RegisterModule(typeof(OnePerRequestHttpModule)); DynamicModuleUtility.RegisterModule(typeof(NinjectHttpModule)); bootstrapper.Initialize(CreateKernel); } /// <summary> /// Stops the application. /// </summary> public static void Stop() { bootstrapper.ShutDown(); } /// <summary> /// Creates the kernel that will manage your application. /// </summary> /// <returns>The created kernel.</returns> private static IKernel CreateKernel() { var kernel = new StandardKernel(); kernel.Bind<Func<IKernel>>().ToMethod(ctx => () => new Bootstrapper().Kernel); kernel.Bind<IHttpModule>().To<HttpApplicationInitializationHttpModule>(); RegisterServices(kernel); return kernel; } /// <summary> /// Load your modules or register your services here! /// </summary> /// <param name="kernel">The kernel.</param> private static void RegisterServices(IKernel kernel) { kernel.Bind(scanner => scanner.FromAssembliesInPath(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)) .Select(IsServiceType) .BindToDefaultInterface() .Configure(binding => binding.InSingletonScope()) ); } private static bool IsServiceType(Type type) { // temp return true; // .Any() is not recognized either. return true; // type.IsClass && type.GetInterfaces().Any(intface => intface.Name == "I" + type.Name); }

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• ASP.NET MVC2 Model Validation Fails with Non-US Date Format

  - by 81bronco

  I have a small MVC2 app that displays in two cultures: en-US and es-MX. One portion contains a user input for a date that is pre-populated with the current date in the Model. When using en-US, the date field is displayed as MM/dd/yyyy and can be changed using the same format without causing any validation errors. When using es-MX, the date field is displayed as dd/MM/yyyy, but when the date is edited in this format, the server-side validation fails with the message: The value '17/05/1991' is not valid for The Date. One of the first things that jumps out at me about that message is that it is not localized. Both the message itself (which I do not think I can control) and the Display Name of the field (which I can control and is localized in my code). Should be displaying in a localized format. I have tried stepping through the code to see exactly where the validation is failing, but it seems to be happening inside some of the compiled MVC or DataAnnotations code that I cannot see. Application details: IIS6, ASP.NET 3.5 (C#), MVC 2 RTM Sample Model Code: public class TestVieModel{ [LocalizedDisplayNameDisplayName("TheDateDisplayName", NameResourceType=typeof(Resources.Model.TestViewModel))] [Required(ErrorMessageResourceName="TheDateValidationMessageRequired", ErrorMessageResourceType=typeof(Resources.Model.TestViewModel))] [DataType(DataType.Date)] public DateTime TheDate { get; set; } } Sample Controller Action Code: [HttpPost] [ValidateAntiForgeryToken] public ActionResult Save(TestViewModel model) { if(ModelState.IsValid) { // <--- Always is false when using es-MX and a date foramtted as dd/MM/yyyy. // Do other stuff return this.View("Complete", model); } // Validation failed, redisplay the form. return this.View("Enter", model); } Sample View Code: <%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage<HispanicSweeps.Web.Model.LosMets.EnterViewModel>" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>Test</title> </head> <body> <% using (Html.BeginForm()) {%> <%= Html.ValidationSummary(true) %> <fieldset> <legend>Fields</legend> <div class="editor-label"> <%= Html.LabelFor(model => model.DateOfBirth) %> </div> <div class="editor-field"> <%= Html.EditorFor(model => model.DateOfBirth) %> <%= Html.ValidationMessageFor(model => model.DateOfBirth) %> </div> <p><input type="submit" value="Save" /></p> </fieldset> <% } %> </body> </html>

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• ASP.NET MVC Tabular Display Template

  The ASP.NET MVC2 templates feature is a pretty nice way to quickly scaffold objects at runtime. Be sure to read Brad Wilsons fantastic series on this topic starting at ASP.NET MVC 2 Templates, Part 1: Introduction. As great as this feature is, there is one template thats conspicuously missing. ASP.NET MVC does not include a template for displaying a list of objects in a tabular format. Earlier today, ScottGu forwarded an email from Daniel Manes (what?! no blog! ;) with a question on how to accomplish...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Sam Abraham To Speak about MVC & MVVM at InterClick on May 19th

  - by Sam Abraham

  My next speaking engagement will be taking place at InterClick in Boca Raton, FL on Wednesday May 19th 2010.  Here is a quick abstract of what I will be blabbing about: MVC & MVVM are two of many buzzwords under the Architecture Spotlight as means of achieving true separation of concerns between data, business logic and UI layers. In this session, we will be discussing the basic concepts of Microsoft MVC and demonstrating the ease of creating a new MVC project and related Unit Tests within VS2010. We will then move to introduce MVVM as a design paradigm and incorporating that into an MS MVC application structure. Next, we will take a look at MVVM in the context of a sample Silverlight application. Throughout our talk we will be demonstrating various features of the latest and greatest VS2010. You can get more information about the event and the speaker, as well as register to attend at this link: http://sherstaff.com/EventSignUp.aspx?EventID=777 Look forward to seeing you all there.

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• Set @Html.RadioButtonFor as Checked by default

  - by minchiya

  I am not able to set the default radio button to "Checked" ! I am using @Html.RadioButtonFor : <div id="private-user"> @Html.RadioButtonFor(m => m.UserType, "type1", new { @class="type-radio" , **@Checked="checked"** }) 1 </div> <div id="proff-user"> @Html.RadioButtonFor(m => m.UserType, "type2", new { @class="type-radio" }) 2 </div> Is it possible to set a radio button as cheched using @Html.RadioButtonFor ? Thx

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• MVC 2 Ajax.Beginform passes returned Html to javascript function

  - by Joe

  Hi, I have a small partial Create Person form in a page above a table of results. I want to be able to post the form to the server, which I can do no problem with ajax.Beginform. <% using (Ajax.BeginForm("Create", new AjaxOptions { OnComplete = "ProcessResponse" })) {%> <fieldset> <legend>Fields</legend> <div class="editor-label"> <%=Html.LabelFor(model => model.FirstName)%> </div> <div class="editor-field"> <%=Html.TextBoxFor(model => model.FirstName)%> <%=Html.ValidationMessageFor(model => model.FirstName)%> </div> <div class="editor-label"> <%=Html.LabelFor(model => model.LastName)%> </div> <div class="editor-field"> <%=Html.TextBoxFor(model => model.LastName)%> <%=Html.ValidationMessageFor(model => model.LastName)%> </div> <p> <input type="submit" /> </p> </fieldset> <% } %> Then in my controller I want to be able to post back a partial which is just a table row if the create is successful and append it to the table, which I can do easily with jquery. $('#personTable tr:last').after(data); However, if server validation fails I want to pass back my partial create person form with the validation errors and replace the existing Create Person form. I have tried returning a Json array Controller: return Json(new { Success = true, Html= this.RenderViewToString("PersonSubform",person) }); Javascript: var json_data = response.get_response().get_object(); with a pass/fail flag and the partial rendered as a string using the solition below but that doesnt render the mvc validation controls when the form fails. SO RenderPartialToString So, is there any way I can hand my javascript the out of the box PartialView("PersonForm") as its returned from my ajax.form? Can I pass some addition info as a Json array so I can tell if its pass or fail and maybe add a message? UPDATE I can now pass the HTML of a PartialView to my javascript but I need to pass some additional data pairs like ServerValidation : true/false and ActionMessage : "you have just created a Person Bill". Ideally I would pass a Json array rather than hidden fields in my partial. function ProcessResponse(response) { var html = response.get_data(); $("#campaignSubform").html(html); } Many thanks in advance

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• mvc2 host on iis6 : The incoming request does not match any route.

  - by Sefer KILIÇ

  I have to host my project on iis6, I can not change iis setting on server. So, I modified global.asax like below. But when I browse project I got error like : The incoming request does not match any route. have any idea? thanks public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute("Default", // Route name "{controller}.aspx/{action}/{id}", new { controller = "Home", action = "Index", id = "" } // Parameter defaults ) ); routes.MapRoute("Detail", // Route name "{controller}.aspx/{action}/{id}/{sid}", new { controller = "Home", action = "Index", id = "", sid="" } // Parameter defaults ) ); routes.MapRoute("ForGoogle", // Route name "{controller}.aspx/{action}/{friendlyUrl}/{id}/{partialName}", new { controller = "Home", action = "Index", friendlyUrl = "", id = "", partialName =""} // Parameter defaults ) ); routes.MapRoute( "PostFeed", "Feed/{type}", new { controller = "Product", action = "PostFeed", type = "rss" } ); }

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• MVC 2 Presentation &ndash; Final Demo

  - by Steve Michelotti

  In my presentation this past weekend at NoVa Code Camp, a member of the audience caught my final demo on video. In this demo, I combine multiple new features from MVC 2 to show how to build apps quickly with MVC 2. These features include: Template Helpers / Editor Templates Server-side/Client-side Validation Model Metadata for View Model HTML Encoding Syntax Dependency Injection Abstract Controllers Custom T4 Templates Custom MVC Visual Studio 2010 Code Snippets The projector screen is a little difficult to see during parts of the video – a video of the direct screencast can be seen here: MVC 2 in 2 Minutes.   Direct link to YouTube video here.

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• Creating an Ajax.ActionLink that avoids all caching issues

  - by Richard Ev

  I am using an Ajax.ActionLink to display a partial view that shows a settings dialog (the modality of which is arranged using jQuery UI dialog). The issue I am running into is around browser caching. It is important that the user is never shown a cached settings dialog. In an attempt to achieve this I have written the following extension method that has the same method signature as the ActionLink method overload that I am using. /// <summary> /// Defines an AJAX ActionLink that effectively bypasses browser caching issues /// by adding an additional route value that contains a unique (actually DateTime.Now.Ticks) value. /// </summary> public static MvcHtmlString NonCachingActionLink(this AjaxHelper helper, string linkText, string actionName, string controllerName, System.Web.Routing.RouteValueDictionary routeValues, AjaxOptions ajaxOptions) { routeValues.Add("rnd", DateTime.Now.Ticks); return helper.ActionLink(linkText, actionName, controllerName, routeValues, ajaxOptions); } This works well between browser sessions (as the rnd route value gets re-calculated on page load), but not if the user is on the page, makes settings changes, saves them (which is done with another ajax call) and then re-displays the settings dialog. My next step is to look into creating my own ActionLink equivalent that re-calculates a random query string component as part of the onclick JavaScript event handler. Thoughts please.

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• Validate checkboxes in MVC form

  - by Frode Lillerud

  Hi, I have a table in an ASP.NET MVC2 form. On each row in the table there is a checkbox. Underneath the table there is a submitbutton. I want to make the button disabled when NONE of the checkboxes are selected. <% using Html.BeginForm(....) { %> <table> <% foreach (var item in Model) { %> <tr> <td> <input type="checkbox" name="selectedContacts" /> </td></tr> <% } //End foreach %> </table> <% } //End using %> <input type="submit" value="Create selection" name="CreateSelectionAction" /> The number of lines/checkboxes will vary from 1 to many. How can I use MVC2/jQuery to require the user to selected minimum one checkbox before clicking Submit button? Edit; Of the three answers below I couldn't get any of them to work. Nothing happens when clicking the checkboxes, and no Javascript errors are raised. Setting up a small bounty.

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• Working with partial views

  - by MrW

  Hi. I'm trying to create a page that contains a grid and searching. The issue is that I want to have a partial view for the grid and one for the searching. If doing a search, this should render the grid partial view with the new information. At the moment I need information, such as what column I'm sorting by and so on, from the grid (currently stored in viewdata), in order to do the search as I want to keep those settings. This information is only available in the grid partial though. What's the best approach of this to make it neat and nice in the code, but not a mess to work with? Where can I store information that I need in the other partial view? Partial View 1; <table> <%= Html.CreateGrid(Model, "Grid", "Grid", (int)ViewData["SortColumn"], (bool)ViewData["SortedASC"])%> </table> Partial View 2; <div class="searchControl"> <input type="text" class="SearchBox" href="<%= Url.Action("Grid", "Grid", new {page = 1, columnToSortBy=/* would like to access viewdata from partial view 1 here. */, sortASC = /* would like to access viewdata from partial view 1 here. */ } ) %>" /> <input type="submit" value="Search" class="SearchButton" /> </div> I know I might take the completely wrong approach on this, so feel free to point me in the right one! Thanks!

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• ASP.Net: Writing chunks of file..HTTP File upload with resume..

  - by Manish

  Please refer to question: http://stackoverflow.com/questions/2062852/resume-in-upload-file-control Now to find a solution for the above question, I want to work on it and develop a user control which can resume a HTTP File Upload process. For this, I'm going to create a temporary file on server until the upload is complete. Once the uploading is done completely then will just save it to the desired location. The procedure I have thought of is: Create a temporary file with a unique name (may be GUID) on the server. Read a chunk of file and append it to this temp file on the server. Continue step 1 to 3 until EOF is reached. Now if the connection is lost or user clicks on pause button, the writing of file is stopped and the temporary file is not deleted. Clicking on resume again or uploading the same file again will check on the server if the file exists and user whether to resume or to overwrite. (Not sure how to check if it's the same file. Also, how to step sending the chunks from client to server.) Clicking on resume will start from where it is required to be uploaded and will append that to the file on the server. (Again not sure how to do this.) Questions: Are these steps correct to achieve the goal? Or need some modifications? I'm not sure how to implement all these steps. :-( Need ideas, links... Any help appreciated...

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• How to make ASP.NET authentication persist the Url Fragment when redirecting to the login page?

  - by estourodepilha.com

  After I inserted the configuration below in my Web.Config <authentication mode="Forms"> <forms name="appNameAuth" path="/" loginUrl="login.aspx" protection="All" timeout="30"> <credentials passwordFormat="Clear"> <user name="user" password="password" /> </credentials> </forms> </authentication> <authorization> <deny users="?" /> </authorization> All requests to Menu.aspx#fragment are redirected to login.aspx?ReturnUrl=/Menu.aspx and I expected it to be redirected to login.aspx?ReturnUrl=/Menu.aspx#fragment How to achieve the desired behavior?

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• Custom IIdentity and passing data from an attribute to a controller

  - by DM

  Here's my scenario: I've successfully created a custom IIdentity that I pass to a GenericPrincipal. When I access that IIdentity in my controller I have to cast the IIdentity in order to use the custom properties. example: public ActionResult Test() { MyCustomIdentity identity = (MyCustomIdentity)User.Identity; int userID = identity.UserID; ...etc... } Since I need to do this casting for nearly every action I would like to wrap this functionality in an ActionFilterAttribute. I can't do it in the controller's constructor because the context isn't initialized yet. My thought would be to have the ActionFilterAttribute populate a private property on the controller that I can use in each action method. example: public class TestController : Controller { private MyCustomIdentity identity; [CastCustomIdentity] public ActionResult() { int userID = identity.UserID; ...etc... } } Question: Is this possible and how? Is there a better solution? I've racked my brain trying to figure out how to pass public properties that are populated in an attribute to the controller and I can't get it.

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• Free E-book - Ignore ASP.NET MVC at Your Own Peril: Lessons Learned from the Trenches

  - by TATWORTH

  Originally posted on: http://geekswithblogs.net/TATWORTH/archive/2013/06/22/free-e-book---ignore-asp.net-mvc-at-your-own-peril.aspxAt http://www.syncfusion.com/resources/techportal/whitepapers/aspnet-mvc, Syncfusion are offering a free E-Book "Ignore ASP.NET MVC at Your Own Peril: Lessons Learned from the Trenches"Using code examples and a side-by-side comparison with Web Forms, this white paper details:Separation of concerns: UI code and business logicAJAX and the server–side lifecycleJQuery & client-side scriptingPerformance issues and the impact on end–usersBrowser compatibility issuesI will in due course be doing a review of this book

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