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  • ASP.NET hosting: better, faster, cheaper

    - by Fabrice Marguerie
    After seven years with webhost4life, it was time to move on. Especially because of all the troubles with webhost4life due to their internal migration to a new hosting environment (the company has been bought out).I've just moved all my websites elsewhere. I'm now using Arvixe and OrcsWeb.I use OrcsWeb for metaSapiens.com. OrcsWeb kindly offers me free ASP.NET hosting because I'm a Microsoft MVP. I'd like to publicly thank OrcsWeb for this, and I invite you to have a look at what they have to offer.I use Arvixe for all my other websites, the major ones being SharpToolbox.com, JavaToolbox.com, AxToolbox.com, Proagora.com, LinqInAction.net, ClairDeBulle.com, and madgeek.com.Moving all my websites wasn't a walk in the park, but it was well worth it. Let's consider what I get with Arvixe:Unlimited diskspaceUnlimited data transferUnlimited domainsDedicated application poolsUnlimited POP3 and IMAP mailboxesUnlimited SQL Server 2008 databasesUnlimited MySQL 5 databases.NET 1.1, 2, 3.5 and 4Full trustIIS 7Daily backups A powerful and easy to use control panelAnd more!All of this for $8 per month. If you don't need all of the above features, you can even get an offer as cheap as $5 per month.You can even get better rates if you use coupon codes, such as TOPHOST (30% discount) or MVCHOSTING (20% discount).All in all, I paid only $134 for two years for a great hosting service!Maybe it's time for you to move too?Disclaimer: the links to OrcsWeb and Arvixe are affiliate links that may bring me some money home if you sign up.

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  • ASP.NET Ajax - Asynch request has separate session???

    - by Marcus King
    We are writing a search application that saves the search criteria to session state and executes the search inside of an asp.net updatepanel. Sometimes when we execute multiple searches successively the 2nd or 3rd search will sometimes return results from the first set of search criteria. Example: our first search we do a look up on "John Smith" - John Smith results are displayed. The second search we do a look up on "Bob Jones" - John Smith results are displayed. We save all of the search criteria in session state as I said, and read it from session state inside of the ajax request to format the DB query. When we put break points in VS everything behaves as normal, but without them we get the original search criteria and results. My guess is because they are saved in session, that the ajax request somehow gets its own session and saves the criteria to that, and then retrieves the criteria from that session every time, but the non-async stuff is able to see when the criteria is modified and saves the changes to state accordingly, but because they are from two different sessions there is a disparity in what is saved and read. EDIT::: To elaborate more, there was a suggestion of appending the search criteria to the query string which normally is good practice and I agree thats how it should be but following our requirements I don't see it as being viable. They want it so the user fills out the input controls hits search and there is no page reload, the only thing they see is a progress indicator on the page, and they still have the ability to navigate and use other features on the current page. If I were to add criteria to the query string I would have to do another request causing the whole page to load, which depending on the search criteria can take a really long time. This is why we are using an ajax call to perform the search and why we aren't causing another full page request..... I hope this clarifies the situation.

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  • Run both Authorize Filter and Action Filter on unauthenticated ASP.NET MVC request

    - by Bryan Migliorisi
    I have decorated my base controller with a couple of action filters. They work fine. One of those filters sets up the request - does things like set the culture based on the domain, etc. I also have a handful of actions that require authorization using the Authorize attribute. My problem is that when an user attempts to request a page they are not authorized to access, the authorization filter kicks in and redirects them to a page telling them that they cannot vie the page. The issue is that the action filters never run so the culture and other request data is never set. This effectively causes language to be wrong in the view and other data to be missing. I know that authorization filters run first but my question is this: How can I design this such that I can ensure that certain methods are always run before the view is returned, regardless of the authorization. Hope that makes sense.

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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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  • Can I run asp.net mvc 1 on .net 4?

    - by Jenea
    I have a asp.net mvc site that references a couple of libraries. Recently I discovered that it is necessary to migrate those dlls to .net 4 (I mean compile them for .net 4). Can I run asp.net mvc 1 on .net 4. Migration to asp.net mvc 2 is postponed because of the removal of response.WriteSubstitution(...) method.

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  • How to use jQuery Date Range Picker plugin in asp.net

    - by alaa9jo
    I stepped by this page: http://www.filamentgroup.com/lab/date_range_picker_using_jquery_ui_16_and_jquery_ui_css_framework/ and let me tell you,this is one of the best and coolest daterangepicker in the web in my opinion,they did a great job with extending the original jQuery UI DatePicker.Of course I made enhancements to the original plugin (fixed few bugs) and added a new option (Clear) to clear the textbox. In this article I well use that updated plugin and show you how to use it in asp.net..you will definitely like it. So,What do I need? 1- jQuery library : you can use 1.3.2 or 1.4.2 which is the latest version so far,in my article I will use the latest version. 2- jQuery UI library (1.8): As I mentioned earlier,daterangepicker plugin is based on the original jQuery UI DatePicker so that library should be included into your page. 3- jQuery DateRangePicker plugin : you can go to the author page or use the modified one (it's included in the attachment),in this article I will use the modified one. 4- Visual Studio 2005 or later : very funny :D,in my article I will use VS 2008. Note: in the attachment,I included all CSS and JS files so don't worry. How to use it? First thing,you will have to include all of the CSS and JS files into your page like this: <script src="Scripts/jquery-1.4.2.min.js" type="text/javascript"></script> <script src="Scripts/jquery-ui-1.8.custom.min.js" type="text/javascript"></script> <script src="Scripts/daterangepicker.jQuery.js" type="text/javascript"></script> <link href="CSS/redmond/jquery-ui-1.8.custom.css" rel="stylesheet" type="text/css" /> <link href="CSS/ui.daterangepicker.css" rel="stylesheet" type="text/css" /> <style type="text/css"> .ui-daterangepicker { font-size: 10px; } </style> Then add this html: <asp:TextBox ID="TextBox1" runat="server" Font-Size="10px"></asp:TextBox><asp:Button ID="SubmitButton" runat="server" Text="Submit" OnClick="SubmitButton_Click" /> <span>First Date:</span><asp:Label ID="FirstDate" runat="server"></asp:Label> <span>Second Date:</span><asp:Label ID="SecondDate" runat="server"></asp:Label> As you can see,it includes TextBox1 which we are going to attach the daterangepicker to it,2 labels to show you later on by code on how to read the date from the textbox and set it to the labels Now we have to attach the daterangepicker to the textbox by using jQuery (Note:visit the author's website for more info on daterangerpicker's options and how to use them): <script type="text/javascript"> $(function() { $("#<%= TextBox1.ClientID %>").attr("readonly", "readonly"); $("#<%= TextBox1.ClientID %>").attr("unselectable", "on"); $("#<%= TextBox1.ClientID %>").daterangepicker({ presetRanges: [], arrows: true, dateFormat: 'd M, yy', clearValue: '', datepickerOptions: { changeMonth: true, changeYear: true} }); }); </script> Finally,add this C# code: protected void SubmitButton_Click(object sender, EventArgs e) { if (TextBox1.Text.Trim().Length == 0) { return; } string selectedDate = TextBox1.Text; if (selectedDate.Contains("-")) { DateTime startDate; DateTime endDate; string[] splittedDates = selectedDate.Split("-".ToCharArray(), StringSplitOptions.RemoveEmptyEntries); if (splittedDates.Count() == 2 && DateTime.TryParse(splittedDates[0], out startDate) && DateTime.TryParse(splittedDates[1], out endDate)) { FirstDate.Text = startDate.ToShortDateString(); SecondDate.Text = endDate.ToShortDateString(); } else { //maybe the client has modified/altered the input i.e. hacking tools } } else { DateTime selectedDateObj; if (DateTime.TryParse(selectedDate, out selectedDateObj)) { FirstDate.Text = selectedDateObj.ToShortDateString(); SecondDate.Text = string.Empty; } else { //maybe the client has modified/altered the input i.e. hacking tools } } } This is the way on how to read from the textbox,That's it!. FAQ: 1-Why did you add this code?: <style type="text/css"> .ui-daterangepicker { font-size: 10px; } </style> A:For two reasons: 1)To show the Daterangepicker in a smaller size because it's original size is huge 2)To show you how to control the size of it. 2- Can I change the theme? A: yes you can,you will notice that I'm using Redmond theme which you will find it in jQuery UI website,visit their website and download a different theme,you may also have to make modifications to the css of daterangepicker,it's all yours. 3- Why did you add a font size to the textbox? A: To make the design look better,try to remove it and see by your self. 4- Can I register the script at codebehind? A: yes you can 5- I see you have added these two lines,what they do? $("#<%= TextBox1.ClientID %>").attr("readonly", "readonly"); $("#<%= TextBox1.ClientID %>").attr("unselectable", "on"); A:The first line will make the textbox not editable by the user,the second will block the blinking typing cursor from appearing if the user clicked on the textbox,you will notice that both lines are necessary to be used together,you can't just use one of them...for logical reasons of course. Finally,I hope everyone liked the article and as always,your feedbacks are always welcomed and if anyone have any suggestions or made any modifications that might be useful for anyone else then please post it at at the author's website and post a reference to your post here.

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  • jQuery Ajax Error Handling – How To Show Custom Error Messages

    - by schnieds
    So you want to make your error feedback nice for your users…Kind of an ironic statement isn’t it? We obviously want to avoid errors if at all possible in our applications, but when errors do occur then we want to provide some nice feedback to our users. The worst thing that can happen is to blow up a huge server exception page when something goes wrong or equally bad is not providing any feedback at all and leaving the user in the dark. Although I do not recommend displaying actual .NET Framework exception messages or stack traces to the user in most instances; they are usually not helpful to the user and can be a security concern.... [Read More]Aaron Schniederhttp://www.churchofficeonline.com

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  • Localization with ASP.NET MVC ModelMetadata

    - by kazimanzurrashid
    When using the DisplayFor/EditorFor there has been built-in support in ASP.NET MVC to show localized validation messages, but no support to show the associate label in localized text, unless you are using the .NET 4.0 with Mvc Future. Lets a say you are creating a create form for Product where you have support both English and German like the following. English German I have recently added few helpers for localization in the MvcExtensions, lets see how we can use it to localize the form. As mentioned in the past that I am not a big fan when it comes to decorate class with attributes which is the recommended way in ASP.NET MVC. Instead, we will use the fluent configuration (Similar to FluentNHibernate or EF CodeFirst) of MvcExtensions to configure our View Models. For example for the above we will using: public class ProductEditModelConfiguration : ModelMetadataConfiguration<ProductEditModel> { public ProductEditModelConfiguration() { Configure(model => model.Id).Hide(); Configure(model => model.Name).DisplayName(() => LocalizedTexts.Name) .Required(() => LocalizedTexts.NameCannotBeBlank) .MaximumLength(64, () => LocalizedTexts.NameCannotBeMoreThanSixtyFourCharacters); Configure(model => model.Category).DisplayName(() => LocalizedTexts.Category) .Required(() => LocalizedTexts.CategoryMustBeSelected) .AsDropDownList("categories", () => LocalizedTexts.SelectCategory); Configure(model => model.Supplier).DisplayName(() => LocalizedTexts.Supplier) .Required(() => LocalizedTexts.SupplierMustBeSelected) .AsListBox("suppliers"); Configure(model => model.Price).DisplayName(() => LocalizedTexts.Price) .FormatAsCurrency() .Required(() => LocalizedTexts.PriceCannotBeBlank) .Range(10.00m, 1000.00m, () => LocalizedTexts.PriceMustBeBetweenTenToThousand); } } As you can we are using Func<string> to set the localized text, this is just an overload with the regular string method. There are few more methods in the ModelMetadata which accepts this Func<string> where localization can applied like Description, Watermark, ShortDisplayName etc. The LocalizedTexts is just a regular resource, we have both English and German:   Now lets see the view markup: <%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Demo.Web.ProductEditModel>" %> <asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> <%= LocalizedTexts.Create %> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <h2><%= LocalizedTexts.Create %></h2> <%= Html.ValidationSummary(false, LocalizedTexts.CreateValidationSummary)%> <% Html.EnableClientValidation(); %> <% using (Html.BeginForm()) {%> <fieldset> <%= Html.EditorForModel() %> <p> <input type="submit" value="<%= LocalizedTexts.Create %>" /> </p> </fieldset> <% } %> <div> <%= Html.ActionLink(LocalizedTexts.BackToList, "Index")%> </div> </asp:Content> As we can see that we are using the same LocalizedTexts for the other parts of the view which is not included in the ModelMetadata like the Page title, button text etc. We are also using EditorForModel instead of EditorFor for individual field and both are supported. One of the added benefit of the fluent syntax based configuration is that we will get full compile type checking for our resource as we are not depending upon the string based resource name like the ASP.NET MVC. You will find the complete localized CRUD example in the MvcExtensions sample folder. That’s it for today.

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  • Just released: a new SEO extension for the ASP.NET MVC routing engine

    - by efran.cobisi
    Dear users,after several months of hard work, we are proud to announce to the world that Cobisi's new SEO routing engine for ASP.NET MVC has been officially released! We even provide a free edition which comes at no cost, so this is something you can't really miss if you are a serious ASP.NET developer. ;)SEO routes for ASP.NET MVCCobisi SEO Extensions - this is the name of the product - is an advanced tool for software developers that allows to optimize ASP.NET MVC web applications and sites for search engines. It comes with a powerful routing engine, which extends the standard ASP.NET routing module to provide a much more flexible way to define search optimized routes, and a complete set of classes that make customizing the entire routing infrastructure very easy and cool.In its simplest form, defining a route for an MVC action is just a matter of decorating the method with the [Route("...")] attribute and specifying the desired URL. The library will take care of the rest and set up the route accordingly; while coding routes this way, Cobisi SEO Extensions also shows how the final routes will be, without leaving the Visual Studio IDE!Manage MVC routes with easeIn fact, Cobisi SEO Extensions integrates with the Visual Studio IDE to offer a large set of time-saving improvements targeted at ASP.NET developers. A new tool window, for example, allows to easily browse among the routes exposed by your applications, being them standard ASP.NET routes, MVC specific routes or SEO routes. The routes can be easily filtered on the fly, to ease finding the ones you are interested in. Double clicking a SEO route will even open the related ASP.NET MVC controller, at the beginning of the specified action method.In addition to that, Cobisi SEO Extensions allows to easily understand how each SEO route is composed by showing the routing model details directly in the IDE, beneath each MVC action route.Furthermore, Cobisi SEO Extensions helps developers to easily recognize which class is an MVC controller and which methods is an MVC action by drawing a special dashed underline mark under each items of these categories.Developers, developers, developers, ...We are really eager to receive your feedback and suggestions - please feel free to ping us with your comments! Thank you! Cheers! -- Efran Cobisi Cobisi lead developer Microsoft MVP, MCSD, MCAD, MCTS: SQL Server 2005, MCP

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  • ASP.NET MVC 2 RTM Released !

    - by shiju
    ASP.NET MVC 2 Framework has reached RTM version. You can download the ASP.NET MVC 2 RTM from here. There is not any new breaking changes were introduced by the ASP.NET MVC 2 RTM release.

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  • Unobtrusive Client Side Validation with Dynamic Contents in ASP.NET MVC 3

    - by imran_ku07
        Introduction:          A while ago, I blogged about how to perform client side validation for dynamic contents in ASP.NET MVC 2 at here. Using the approach given in that blog, you can easily validate your dynamic ajax contents at client side. ASP.NET MVC 3 also supports unobtrusive client side validation in addition to ASP.NET MVC 2 client side validation for backward compatibility. I feel it is worth to rewrite that blog post for ASP.NET MVC 3 unobtrusive client side validation. In this article I will show you how to do this.       Description:           I am going to use the same example presented at here. Create a new ASP.NET MVC 3 application. Then just open HomeController.cs and add the following code,   public ActionResult CreateUser() { return View(); } [HttpPost] public ActionResult CreateUserPrevious(UserInformation u) { return View("CreateUserInformation", u); } [HttpPost] public ActionResult CreateUserInformation(UserInformation u) { if(ModelState.IsValid) return View("CreateUserCompanyInformation"); return View("CreateUserInformation"); } [HttpPost] public ActionResult CreateUserCompanyInformation(UserCompanyInformation uc, UserInformation ui) { if (ModelState.IsValid) return Content("Thank you for submitting your information"); return View("CreateUserCompanyInformation"); }             Next create a CreateUser view and add the following lines,   <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<UnobtrusiveValidationWithDynamicContents.Models.UserInformation>" %> <asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> CreateUser </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <div id="dynamicData"> <%Html.RenderPartial("CreateUserInformation"); %> </div> </asp:Content>             Next create a CreateUserInformation partial view and add the following lines,   <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<UnobtrusiveValidationWithDynamicContents.Models.UserInformation>" %> <% Html.EnableClientValidation(); %> <%using (Html.BeginForm("CreateUserInformation", "Home")) { %> <table id="table1"> <tr style="background-color:#E8EEF4;font-weight:bold"> <td colspan="3" align="center"> User Information </td> </tr> <tr> <td> First Name </td> <td> <%=Html.TextBoxFor(a => a.FirstName)%> </td> <td> <%=Html.ValidationMessageFor(a => a.FirstName)%> </td> </tr> <tr> <td> Last Name </td> <td> <%=Html.TextBoxFor(a => a.LastName)%> </td> <td> <%=Html.ValidationMessageFor(a => a.LastName)%> </td> </tr> <tr> <td> Email </td> <td> <%=Html.TextBoxFor(a => a.Email)%> </td> <td> <%=Html.ValidationMessageFor(a => a.Email)%> </td> </tr> <tr> <td colspan="3" align="center"> <input type="submit" name="userInformation" value="Next"/> </td> </tr> </table> <%} %> <script type="text/javascript"> $("form").submit(function (e) { if ($(this).valid()) { $.post('<%= Url.Action("CreateUserInformation")%>', $(this).serialize(), function (data) { $("#dynamicData").html(data); $.validator.unobtrusive.parse($("#dynamicData")); }); } e.preventDefault(); }); </script>             Next create a CreateUserCompanyInformation partial view and add the following lines,   <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<UnobtrusiveValidationWithDynamicContents.Models.UserCompanyInformation>" %> <% Html.EnableClientValidation(); %> <%using (Html.BeginForm("CreateUserCompanyInformation", "Home")) { %> <table id="table1"> <tr style="background-color:#E8EEF4;font-weight:bold"> <td colspan="3" align="center"> User Company Information </td> </tr> <tr> <td> Company Name </td> <td> <%=Html.TextBoxFor(a => a.CompanyName)%> </td> <td> <%=Html.ValidationMessageFor(a => a.CompanyName)%> </td> </tr> <tr> <td> Company Address </td> <td> <%=Html.TextBoxFor(a => a.CompanyAddress)%> </td> <td> <%=Html.ValidationMessageFor(a => a.CompanyAddress)%> </td> </tr> <tr> <td> Designation </td> <td> <%=Html.TextBoxFor(a => a.Designation)%> </td> <td> <%=Html.ValidationMessageFor(a => a.Designation)%> </td> </tr> <tr> <td colspan="3" align="center"> <input type="button" id="prevButton" value="Previous"/>   <input type="submit" name="userCompanyInformation" value="Next"/> <%=Html.Hidden("FirstName")%> <%=Html.Hidden("LastName")%> <%=Html.Hidden("Email")%> </td> </tr> </table> <%} %> <script type="text/javascript"> $("#prevButton").click(function () { $.post('<%= Url.Action("CreateUserPrevious")%>', $($("form")[0]).serialize(), function (data) { $("#dynamicData").html(data); $.validator.unobtrusive.parse($("#dynamicData")); }); }); $("form").submit(function (e) { if ($(this).valid()) { $.post('<%= Url.Action("CreateUserCompanyInformation")%>', $(this).serialize(), function (data) { $("#dynamicData").html(data); $.validator.unobtrusive.parse($("#dynamicData")); }); } e.preventDefault(); }); </script>             Next create a new class file UserInformation.cs inside Model folder and add the following code,   public class UserInformation { public int Id { get; set; } [Required(ErrorMessage = "First Name is required")] [StringLength(10, ErrorMessage = "First Name max length is 10")] public string FirstName { get; set; } [Required(ErrorMessage = "Last Name is required")] [StringLength(10, ErrorMessage = "Last Name max length is 10")] public string LastName { get; set; } [Required(ErrorMessage = "Email is required")] [RegularExpression(@"^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$", ErrorMessage = "Email Format is wrong")] public string Email { get; set; } }             Next create a new class file UserCompanyInformation.cs inside Model folder and add the following code,    public class UserCompanyInformation { public int UserId { get; set; } [Required(ErrorMessage = "Company Name is required")] [StringLength(10, ErrorMessage = "Company Name max length is 10")] public string CompanyName { get; set; } [Required(ErrorMessage = "CompanyAddress is required")] [StringLength(50, ErrorMessage = "Company Address max length is 50")] public string CompanyAddress { get; set; } [Required(ErrorMessage = "Designation is required")] [StringLength(50, ErrorMessage = "Designation max length is 10")] public string Designation { get; set; } }            Next add the necessary script files in Site.Master,   <script src="<%= Url.Content("~/Scripts/jquery-1.4.4.min.js")%>" type="text/javascript"></script> <script src="<%= Url.Content("~/Scripts/jquery.validate.min.js")%>" type="text/javascript"></script> <script src="<%= Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")%>" type="text/javascript"></script>            Now run this application. You will get the same behavior as described in this article. The key important feature to note here is the $.validator.unobtrusive.parse method, which is used by ASP.NET MVC 3 unobtrusive client side validation to initialize jQuery validation plug-in to start the client side validation process. Another important method to note here is the jQuery.valid method which return true if the form is valid and return false if the form is not valid .       Summary:          There may be several occasions when you need to load your HTML contents dynamically. These dynamic HTML contents may also include some input elements and you need to perform some client side validation for these input elements before posting thier values to server. In this article I shows you how you can enable client side validation for dynamic input elements in ASP.NET MVC 3. I am also attaching a sample application. Hopefully you will enjoy this article too.   SyntaxHighlighter.all()

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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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  • 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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  • Daily tech links for .net and related technologies - June 8-11, 2010

    - by SanjeevAgarwal
    Daily tech links for .net and related technologies - June 8-11, 2010 Web Development ASPNET MVC: Handling Multiple Buttons on a Form with jQuery - Donn Building a MVC2 Template, Part 14, Logging Services - Eric Simple Accordion Menu With jQuery & ASP.NET - Steve Boschi Conditional Validation in MVC -Simonince Creating a RESTful Web Service Using ASP.Net MVC Part 23 – Bug Fixes and Area Support - Shoulders of Giants Web Design The Principles Of Cross-Browser CSS Coding - Louis Lazaris Transparency...(read more)

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  • Sample Code and Slides from DevConnection Germany

    - by Stephen Walther
    Thank you everyone who came to my three talks this week at DevConnections Germany!  I really enjoyed my time in Karlsruhe. Here are the slides and sample code for the three talks:   jQuery Templates In this talk, I discuss how you can take advantage of jQuery templates when building both ASP.NET Web Forms and ASP.NET MVC applications. I demonstrate several advanced features of templates such as wrapped templates and remote templates. Download the slides Download the code   HTML5 In this talk, I discuss the features of HTML5 which matter most when building database-driven web applications. I demonstrate WebSockets, Web Workers, Web Storage, IndexedDB, and Offline Web Applications. Download the slides Download the code   jQuery + OData In this talk, I demonstrate how you can build entire web applications by taking advantage of jQuery and OData. I demonstrate how you can use jQuery and OData to both query and update database data. I also discuss two approaches for supporting validation. Download the slides Download the code

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  • Gateway Page Between ASP and an ASP.NET Page

    - by ajdams
    I'll admit, I am pretty new with ASP .NET programming and I have been asked to take all our gateway pages (written in classic ASP) and make one universal gateway page to the few C# .NET applications we have (that I wrote). I tried searching here and the web and couldn't find much of anything describing a great way to do this and figured I was either not searching properly or was not properly naming what I am trying to do. I decided to to take one of the main gateway pages we had in classic ASP and use that as a base for my new gateway. Without boring you with a bunch of code I will summarize my gateway in steps and then can take advice/critique from there. EDIT: Basically what I am trying to do is go from a classic ASP page to a ASP .NET page and then back again. EDIT2: If my question is still unclear I am asking if what I have an the right start and if anyone has suggestions as to how this could be better. It can be as generic as need-be, not looking for a specific off-the-shelf code answer. My Gateway page: In the first part of the page I grab session variables and determine if the user is leaving or returning through the gateway: Code (in VB): uid = Request.QueryString("GUID") If uid = "" Then direction = "Leaving" End If ' Gather available user information. userid = Session("lnglrnregid") bankid = Session("strBankid") ' Return location. floor = Request.QueryString("Floor") ' The option chosen will determine if the user continues as SSL or not. ' If they are currently SSL, they should remain if chosen. option1 = Application(bankid & "Option1") If MID(option1, 6, 1) = "1" Then sslHttps = "s" End If Next I enter the uid into a database table (SQL-Server 2005) as a uniqueidentifier field called GUID. I omitted the stored procedure call. Lastly, I use the direction variable to determine if the user is leaving or returning and do redirects from there to the different areas of the site. Code (In VB again): If direction = "Leaving" Then Select Case floor Case "sscat", "ssassign" ' A SkillSoft course Response.Redirect("Some site here") Case "lrcat", "lrassign" ' A LawRoom course Response.Redirect("Some site here") Case Else ' Some other SCORM course like MindLeaders or a custom upload. Response.Redirect("Some site here") End Select Session.Abandon Else ' The only other direction is "Returning" ..... That's about it so far - so like I said, not an expert so any suggestions would be greatly appreciated!

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  • Good tutorial for ASP.net mvc 2

    - by Ben Robinson
    I am an experienced asp.net web forms developer using c# but i have never used asp.net MVC. As I am just starting out with mvc i would like to start with mvc 2. I am looking for a good intro/tutorial to help me understand the basics. I am aware of the Nerd Dinner but that is based around MVC 1. What would you guys recomend for me to get started. Should i work through the nerd dinner tutorial then once i have a good understanding of mvc then research the new features of mvc 2 or is there a similar getting started tutorial for mvc 2. Sugestions of good books to read are also welcome. In fact any advice on getting started on mvc 2 would be good.

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  • jQuery .ajax() call to page method works in FF only when async is false

    - by Steve
    I'm calling a page method using .ajax() and it works in IE8 whatever the value of async is. However, in FF3.6, it only works with async set to false. When async is set to true, in Firebug, I just see status aborted. The page validates. I can work with async set to false, but any clues as to why FF can't work with async set to true? $("[id$='_www']").click(function() { var hhh = false; $.ajax({ async: false, cache: false, type: "POST", url: "/abc/def.aspx/jkl", contentType: "application/json; charset=utf-8", dataType: "json", data: "{ 'eee': '" + window.location.href.match(/\d{1,3}$/) + "', 'ttt': '" + $("[id$='_zzz']").val() + "' }", success: function(msg) { $("#ggg").html(msg.d); }, error: function(xhr, err) { hhh = true; } }); return hhh; });

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  • Using jQuery and AJAX works for all functions except one, really bizarre issue (from my perspective)

    - by CoreyT
    I am working on a classic asp form that has a number of dropdowns. Three of these are cascading, i.e. they rely in the previous dropdown. For almost everything this code works fine, one of them however is not playing nice. To start off I have a script tag with the following in it: $(document).ready(function () { $("#AcademicLevel").change(getList); $("#CourseDeliveryTime").change(updateLocation); $("#ProgramType").change(updateEntryTerm); }); This works just fine for the first two elements of the form, AcademicLevel and CourseDeliveryTime, the third however does not take effect however. If I use Firebug's Console and run that same line of code, $("#ProgramType").change(updateEntryTerm);, it starts to work, sort of. What happens is what confuses me. If the function it is pointing to, updateEntryTerm, has an alert() call in it, it works. If the alert is commented out, it does not work. The function is below: function updateEntryTerm() { $.ajax({ type: "POST", url: "../Classic ASP and AJAX/jQueryExample.asp", dataType: "application/x-www-form-urlencoded", data: "Action=UpdateEntryTerm&acadLevel=" + $("#AcademicLevel").val() + "&courseTime=" + $("#CourseDeliveryTime").val() + "&programType=" + $("#ProgramType").val(), async: false, success: function (msg) { $("#EntryTerm").remove(); $("#tdEntryTerm").append(msg); //alert(msg); } //, //error: function (xhr, option, err) { // alert("XHR Status: " + xhr.statusText + ", Error - " + err); //} }); } I am lost on two different issues here, First why is the call to $("#ProgramType").change(updateEntryTerm); not working unless I run it in Firebug Console? Second, why does the function itself, updateEntryTerm, not work unless the alert() call is present? Has anyone seem something like this before?

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  • What's new in ASP.Net 4.5 and VS 2012 - part 1

    - by nikolaosk
    I have downloaded .Net framework 4.5 and Visual Studio 2012 since it was released to MSDN subscribers on the 15th of August.For people that do not know about that yet please have a look at Jason Zander's excellent blog post .Since then I have been investigating the many new features that have been introduced in this release.In this post I will be looking into new features available in ASP.Net 4.5 and VS 2012.In order to follow along this post you must have Visual Studio 2012 and .Net Framework 4.5 installed in your machine.Download and install VS 2012 using this link.My machine runs on Windows 8 and Visual Studio 2012 works just fine. Please find all my posts regarding VS 2012, here .Well I have not exactly kept my promise for writing short blog posts, so I will try to keep this one short. 1) Launch VS 2012 and create a new Web Forms application by going to File - >New Web Site - > ASP.Net Web Forms Site.2) Choose an appropriate name for your web site.3) Build and run your site (CTRL+F5). Then go to View - > Source to see the HTML markup (Javascript e.t.c) that is rendered through the browser.You will see that the ASP.Net team has done a good job to make the markup cleaner and more readable. The ViewState size is significantly smaller compared to its size to earlier versions.Have a look at the picture below 4) Another thing that you must notice is that the new template makes good use of HTML 5 elements.When you view the application through the browser and then go to View Page Source you will see HTML 5 elements like nav,header,section.Have a look at the picture below  5) In VS 2012 we can browse with multiple browsers. There is a very handy dropdown that shows all the browsers available for viewing the website.Have a look at the picture below When I select the option Browse With... I see another window and I can select any of the installed browsers I want and also set the default browser. Have a look at the picture below  When I click Browse, all the selected browsers fire up and I can view the website in all of them.Have a look at the picture below There will be more posts soon looking into new features of ASP.Net 4.5 and VS 2012Hope it helps!!!

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  • ASP.NET Membership API not working on Win2008 server/IIS7

    - by Program.X
    I have a very odd problem. I have a web app that uses the .NET Membership API to provide login functionality. This works fine on my local dev machine, using WebDev 4.0 server. I'm using .NET 4.0 with some URL Rewriting, but not on the pages where login is required. I have a Windows Server 2008 with IIS7 However, the Membership API seemingly does not work on the server. I have set up remote debugging and the LoginUser.LoggedIn event of the LoginUser control gets fired okay, but the MembershipUser is null. I get no answer about the username/password being invalid so it seems to be recognising it. If I enter an invalid username/password, I get an invalid username/password response. Some code, if it helps: <asp:ValidationSummary ID="LoginUserValidationSummary" runat="server" CssClass="validation-error-list" ValidationGroup="LoginUserValidationGroup"/> <div class="accountInfo"> <fieldset class="login"> <legend>Account Information</legend> <p> <asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">Username:</asp:Label> <asp:TextBox ID="UserName" runat="server" CssClass="textEntry"></asp:TextBox> <asp:RequiredFieldValidator ID="UserNameRequired" runat="server" ControlToValidate="UserName" CssClass="validation-error" Display="Dynamic" ErrorMessage="User Name is required." ToolTip="User Name is required." ValidationGroup="LoginUserValidationGroup">*</asp:RequiredFieldValidator> </p> <p> <asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">Password:</asp:Label> <asp:TextBox ID="Password" runat="server" CssClass="passwordEntry" TextMode="Password"></asp:TextBox> <asp:RequiredFieldValidator ID="PasswordRequired" runat="server" ControlToValidate="Password" CssClass="validation-error" Display="Dynamic" ErrorMessage="Password is required." ToolTip="Password is required." ValidationGroup="LoginUserValidationGroup">*</asp:RequiredFieldValidator> </p> <p> <asp:CheckBox ID="RememberMe" runat="server"/> <asp:Label ID="RememberMeLabel" runat="server" AssociatedControlID="RememberMe" CssClass="inline">Keep me logged in</asp:Label> </p> </fieldset> <p class="login-action"> <asp:Button ID="LoginButton" runat="server" CommandName="Login" CssClass="submitButton" Text="Log In" ValidationGroup="LoginUserValidationGroup"/> </p> and the code behind: protected void Page_Load(object sender, EventArgs e) { LoginUser.LoginError += new EventHandler(LoginUser_LoginError); LoginUser.LoggedIn += new EventHandler(LoginUser_LoggedIn); } void LoginUser_LoggedIn(object sender, EventArgs e) { // this code gets run so it appears logins work Roles.DeleteCookie(); // this behaviour has been removed for testing - no difference } void LoginUser_LoginError(object sender, EventArgs e) { HtmlGenericControl htmlGenericControl = LoginUser.FindControl("errorMessageSpan") as HtmlGenericControl; if (htmlGenericControl != null) htmlGenericControl.Visible = true; } I have "Fiddled" with the Login form reponse and I get the following Cookie-Set headers: Set-Cookie: ASP.NET_SessionId=lpyyiyjw45jjtuav1gdu4jmg; path=/; HttpOnly Set-Cookie: .ASPXAUTH=A7AE08E071DD20872D6BBBAD9167A709DEE55B352283A7F91E1066FFB1529E5C61FCEDC86E558CEA1A837E79640BE88D1F65F14FA8434AA86407DA3AEED575E0649A1AC319752FBCD39B2A4669B0F869; path=/; HttpOnly Set-Cookie: .ASPXROLES=; expires=Mon, 11-Oct-1999 23:00:00 GMT; path=/; HttpOnly I don't know what is useful here because it is obviously encrypted but I find the .APXROLES cookie having no value interesting. It seems to fail to register the cookie, but passes authentication

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  • NoSQL with RavenDB and ASP.NET MVC - Part 1

    - by shiju
     A while back, I have blogged NoSQL with MongoDB, NoRM and ASP.NET MVC Part 1 and Part 2 on how to use MongoDB with an ASP.NET MVC application. The NoSQL movement is getting big attention and RavenDB is the latest addition to the NoSQL and document database world. RavenDB is an Open Source (with a commercial option) document database for the .NET/Windows platform developed  by Ayende Rahien.  Raven stores schema-less JSON documents, allow you to define indexes using Linq queries and focus on low latency and high performance. RavenDB is .NET focused document database which comes with a fully functional .NET client API  and supports LINQ. RavenDB comes with two components, a server and a client API. RavenDB is a REST based system, so you can write your own HTTP cleint API. As a .NET developer, RavenDB is becoming my favorite document database. Unlike other document databases, RavenDB is supports transactions using System.Transactions. Also it's supports both embedded and server mode of database. You can access RavenDB site at http://ravendb.netA demo App with ASP.NET MVCLet's create a simple demo app with RavenDB and ASP.NET MVC. To work with RavenDB, do the following steps. Go to http://ravendb.net/download and download the latest build.Unzip the downloaded file.Go to the /Server directory and run the RavenDB.exe. This will start the RavenDB server listening on localhost:8080You can change the port of RavenDB  by modifying the "Raven/Port" appSetting value in the RavenDB.exe.config file.When running the RavenDB, it will automatically create a database in the /Data directory. You can change the directory name data by modifying "Raven/DataDirt" appSetting value in the RavenDB.exe.config file.RavenDB provides a browser based admin tool. When the Raven server is running, You can be access the browser based admin tool and view and edit documents and index using your browser admin tool. The web admin tool available at http://localhost:8080The below is the some screen shots of web admin tool     Working with ASP.NET MVC  To working with RavenDB in our demo ASP.NET MVC application, do the following steps Step 1 - Add reference to Raven Cleint API In our ASP.NET MVC application, Add a reference to the Raven.Client.Lightweight.dll from the Client directory. Step 2 - Create DocumentStoreThe document store would be created once per application. Let's create a DocumentStore on application start-up in the Global.asax.cs. documentStore = new DocumentStore { Url = "http://localhost:8080/" }; documentStore.Initialise(); The above code will create a Raven DB document store and will be listening the server locahost at port 8080    Step 3 - Create DocumentSession on BeginRequest   Let's create a DocumentSession on BeginRequest event in the Global.asax.cs. We are using the document session for every unit of work. In our demo app, every HTTP request would be a single Unit of Work (UoW). BeginRequest += (sender, args) =>   HttpContext.Current.Items[RavenSessionKey] = documentStore.OpenSession(); Step 4 - Destroy the DocumentSession on EndRequest  EndRequest += (o, eventArgs) => {     var disposable = HttpContext.Current.Items[RavenSessionKey] as IDisposable;     if (disposable != null)         disposable.Dispose(); };  At the end of HTTP request, we are destroying the DocumentSession  object.The below  code block shown all the code in the Global.asax.cs  private const string RavenSessionKey = "RavenMVC.Session"; private static DocumentStore documentStore;   protected void Application_Start() { //Create a DocumentStore in Application_Start //DocumentStore should be created once per application and stored as a singleton. documentStore = new DocumentStore { Url = "http://localhost:8080/" }; documentStore.Initialise(); AreaRegistration.RegisterAllAreas(); RegisterRoutes(RouteTable.Routes); //DI using Unity 2.0 ConfigureUnity(); }   public MvcApplication() { //Create a DocumentSession on BeginRequest   //create a document session for every unit of work BeginRequest += (sender, args) =>     HttpContext.Current.Items[RavenSessionKey] = documentStore.OpenSession(); //Destroy the DocumentSession on EndRequest EndRequest += (o, eventArgs) => { var disposable = HttpContext.Current.Items[RavenSessionKey] as IDisposable; if (disposable != null) disposable.Dispose(); }; }   //Getting the current DocumentSession public static IDocumentSession CurrentSession {   get { return (IDocumentSession)HttpContext.Current.Items[RavenSessionKey]; } }  We have setup all necessary code in the Global.asax.cs for working with RavenDB. For our demo app, Let’s write a domain class  public class Category {       public string Id { get; set; }       [Required(ErrorMessage = "Name Required")]     [StringLength(25, ErrorMessage = "Must be less than 25 characters")]     public string Name { get; set;}     public string Description { get; set; }   } We have created simple domain entity Category. Let's create repository class for performing CRUD operations against our domain entity Category.  public interface ICategoryRepository {     Category Load(string id);     IEnumerable<Category> GetCategories();     void Save(Category category);     void Delete(string id);       }    public class CategoryRepository : ICategoryRepository {     private IDocumentSession session;     public CategoryRepository()     {             session = MvcApplication.CurrentSession;     }     //Load category based on Id     public Category Load(string id)     {         return session.Load<Category>(id);     }     //Get all categories     public IEnumerable<Category> GetCategories()     {         var categories= session.LuceneQuery<Category>()                 .WaitForNonStaleResults()             .ToArray();         return categories;       }     //Insert/Update category     public void Save(Category category)     {         if (string.IsNullOrEmpty(category.Id))         {             //insert new record             session.Store(category);         }         else         {             //edit record             var categoryToEdit = Load(category.Id);             categoryToEdit.Name = category.Name;             categoryToEdit.Description = category.Description;         }         //save the document session         session.SaveChanges();     }     //delete a category     public void Delete(string id)     {         var category = Load(id);         session.Delete<Category>(category);         session.SaveChanges();     }        } For every CRUD operations, we are taking the current document session object from HttpContext object. session = MvcApplication.CurrentSession; We are calling the static method CurrentSession from the Global.asax.cs public static IDocumentSession CurrentSession {     get { return (IDocumentSession)HttpContext.Current.Items[RavenSessionKey]; } }  Retrieve Entities  The Load method get the single Category object based on the Id. RavenDB is working based on the REST principles and the Id would be like categories/1. The Id would be created by automatically when a new object is inserted to the document store. The REST uri categories/1 represents a single category object with Id representation of 1.   public Category Load(string id) {    return session.Load<Category>(id); } The GetCategories method returns all the categories calling the session.LuceneQuery method. RavenDB is using a lucen query syntax for querying. I will explain more details about querying and indexing in my future posts.   public IEnumerable<Category> GetCategories() {     var categories= session.LuceneQuery<Category>()             .WaitForNonStaleResults()         .ToArray();     return categories;   } Insert/Update entityFor insert/Update a Category entity, we have created Save method in repository class. If  the Id property of Category is null, we call Store method of Documentsession for insert a new record. For editing a existing record, we load the Category object and assign the values to the loaded Category object. The session.SaveChanges() will save the changes to document store.  //Insert/Update category public void Save(Category category) {     if (string.IsNullOrEmpty(category.Id))     {         //insert new record         session.Store(category);     }     else     {         //edit record         var categoryToEdit = Load(category.Id);         categoryToEdit.Name = category.Name;         categoryToEdit.Description = category.Description;     }     //save the document session     session.SaveChanges(); }  Delete Entity  In the Delete method, we call the document session's delete method and call the SaveChanges method to reflect changes in the document store.  public void Delete(string id) {     var category = Load(id);     session.Delete<Category>(category);     session.SaveChanges(); }  Let’s create ASP.NET MVC controller and controller actions for handling CRUD operations for the domain class Category  public class CategoryController : Controller { private ICategoryRepository categoyRepository; //DI enabled constructor public CategoryController(ICategoryRepository categoyRepository) {     this.categoyRepository = categoyRepository; } public ActionResult Index() {         var categories = categoyRepository.GetCategories();     if (categories == null)         return RedirectToAction("Create");     return View(categories); }   [HttpGet] public ActionResult Edit(string id) {     var category = categoyRepository.Load(id);         return View("Save",category); } // GET: /Category/Create [HttpGet] public ActionResult Create() {     var category = new Category();     return View("Save", category); } [HttpPost] public ActionResult Save(Category category) {     if (!ModelState.IsValid)     {         return View("Save", category);     }           categoyRepository.Save(category);         return RedirectToAction("Index");     }        [HttpPost] public ActionResult Delete(string id) {     categoyRepository.Delete(id);     var categories = categoyRepository.GetCategories();     return PartialView("CategoryList", categories);      }        }  RavenDB is an awesome document database and I hope that it will be the winner in .NET space of document database world.  The source code of demo application available at http://ravenmvc.codeplex.com/

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  • Asp.net session on browser close

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

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