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  • Performing dynamic sorts on EF4 data

    - by Jaxidian
    I'm attempting to perform dynamic sorting of data that I'm putting into grids into our MVC UI. Since MVC is abstracted from everything else via WCF, I've created a couple utility classes and extensions to help with this. The two most important things (slightly simplified) are as follows: public static IQueryable<T> ApplySortOptions<T, TModel, TProperty>(this IQueryable<T> collection, IEnumerable<ISortOption<TModel, TProperty>> sortOptions) where TModel : class { var sortedSortOptions = (from o in sortOptions orderby o.Priority ascending select o).ToList(); var results = collection; foreach (var option in sortedSortOptions) { var currentOption = option; var propertyName = currentOption.Property.MemberWithoutInstance(); var isAscending = currentOption.IsAscending; if (isAscending) { results = from r in results orderby propertyName ascending select r; } else { results = from r in results orderby propertyName descending select r; } } return results; } public interface ISortOption<TModel, TProperty> where TModel : class { Expression<Func<TModel, TProperty>> Property { get; set; } bool IsAscending { get; set; } int Priority { get; set; } } I've not given you the implementation for MemberWithoutInstance() but just trust me in that it returns the name of the property as a string. :-) Following is an example of how I would consume this (using a non-interesting, basic implementation of ISortOption<TModel, TProperty>): var query = from b in CurrentContext.Businesses select b; var sortOptions = new List<ISortOption<Business, object>> { new SortOption<Business, object> { Property = (x => x.Name), IsAscending = true, Priority = 0 } }; var results = query.ApplySortOptions(sortOptions); As I discovered with this question, the problem is specific to my orderby propertyName ascending and orderby propertyName descending lines (everything else works great as far as I can tell). How can I do this in a dynamic/generic way that works properly?

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  • Is possible to integrate elmah with wf-wcf services using web.config?

    - by tartafe
    Hi, i'm developing an enterprise application using asp.net mvc, wf-wcf services and normal wcf. I want use a unique point of view of unmanaged exception and my problem is integrate wf-wcf services with ELMAH. The problem is that in wf-wcf i can't decorate di class with the elmah attribute so i make that using web.config if is possible. Someone can help me? (here is a discussion how integrate elmah with wcf using attribute http://stackoverflow.com/questions/895901/exception-logging-for-wcf-services-using-elmah) thanks in advance F.

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  • How would you organize a large complex web application (see basic example)?

    - by Anurag
    How do you usually organize complex web applications that are extremely rich on the client side. I have created a contrived example to indicate the kind of mess it's easy to get into if things are not managed well for big apps. Feel free to modify/extend this example as you wish - http://jsfiddle.net/NHyLC/1/ The example basically mirrors part of the comment posting on SO, and follows the following rules: Must have 15 characters minimum, after multiple spaces are trimmed out to one. If Add Comment is clicked, but the size is less than 15 after removing multiple spaces, then show a popup with the error. Indicate amount of characters remaining and summarize with color coding. Gray indicates a small comment, brown indicates a medium comment, orange a large comment, and red a comment overflow. One comment can only be submitted every 15 seconds. If comment is submitted too soon, show a popup with appropriate error message. A couple of issues I noticed with this example. This should ideally be a widget or some sort of packaged functionality. Things like a comment per 15 seconds, and minimum 15 character comment belong to some application wide policies rather than being embedded inside each widget. Too many hard-coded values. No code organization. Model, Views, Controllers are all bundled together. Not that MVC is the only approach for organizing rich client side web applications, but there is none in this example. How would you go about cleaning this up? Applying a little MVC/MVP along the way? Here's some of the relevant functions, but it will make more sense if you saw the entire code on jsfiddle: /** * Handle comment change. * Update character count. * Indicate progress */ function handleCommentUpdate(comment) { var status = $('.comment-status'); status.text(getStatusText(comment)); status.removeClass('mild spicy hot sizzling'); status.addClass(getStatusClass(comment)); } /** * Is the comment valid for submission */ function commentSubmittable(comment) { var notTooSoon = !isTooSoon(); var notEmpty = !isEmpty(comment); var hasEnoughCharacters = !isTooShort(comment); return notTooSoon && notEmpty && hasEnoughCharacters; } // submit comment $('.add-comment').click(function() { var comment = $('.comment-box').val(); // submit comment, fake ajax call if(commentSubmittable(comment)) { .. } // show a popup if comment is mostly spaces if(isTooShort(comment)) { if(comment.length < 15) { // blink status message } else { popup("Comment must be at least 15 characters in length."); } } // show a popup is comment submitted too soon else if(isTooSoon()) { popup("Only 1 comment allowed per 15 seconds."); } });

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  • How to limit an upload speed in java servlet?

    - by den-javamaniac
    Hi. I'm working on an app (based on Spring as DI and MVC framework) that has a file upload function which is currently implemented using Spring Multipart Upload (which in it's turn utilizes commons fileupload libs). So what I'm looking for is a way to lower the upload bandwidth consumption. How can I accomplish that?

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  • How to use bean in JSP?

    - by Nick
    How to use bean in JSP with only <jsp:useBean>, not MVC? Assume you have a grade.txt file which contains following data: Tom 90 Jerry 70 Katy 80 John 60 It asks you to create a bean named grade.java, a JSP page named graderesult.jsp, and a html page named gradecheck.html. gradecheck.html provides a input textbox and a button submit, once you submit the name of the student, the graderesult.jsp will communicates with bean to show the name and the score corresponding to the person.

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  • Is ASP.Net State Server an elegant solution?

    - by alchemical
    We have an ASP.Net MVC project that will start with a single web server but likely soon scale into a small web farm. As ASP.Net Authentication stores a UserID, and data caching may also be useful, we would likely need to make the jump to state server fairly soon. I'd like to hear from others how State Server has been to work with and how it scales from a performance perspective. Alternateively, we could architect it as completely stateless by not using data caching and tracking sessions with an encrypted cookie.

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  • Key things to learn to be a senior developer under the MS platform

    - by Blankman
    I know the following: asp.net webforms, mvc, sql server 2005/2008, web services, and windows services. I want to expand so I can be a little more versatile. What things should I be focusing on? (this is general guidance, with a web focus) I am thinking: SSIS windows workflow sharepoint What other common skills should I know that seem to be go well with what I know already?

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  • Visual studio - precompile - dotless

    - by Pickels
    I wonder if there is a way to precompile *.less files(http://www.dotlesscss.com/) with visual studio. The site gives me a dotless.compiler.exe but I am not sure how to hook this up to visual studio. I am looking for a solution for both Webforms and Mvc. Friendly Greetings, Pickels

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  • Is it worth learning ASP.Net AJAX

    - by Yogendra
    Hi All, I know this is a duplicate kind of question. I have worked with ASP.Net and ASP.Net MVC 1.0. I never really got a chance to get into ASP.Net AJAX. My question is it really worth to invest in learning ASP.Net AJAX 3.5 or 4.0 given the fact, I have hardly used it ? Please let me know your advise.

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  • 3 tier with ASP.NET, C# and Oracle 11g

    - by ephraim
    Hi I am new to .NET, want to follow N-tier approach using Visual Studio 2010(ASP.NET MVC + C#),IIS and Oracle 11g(installed on the remote linux machine). I need to have Presentation, Business Logic, Data Access and Data Tiers. Can anyone give me site/example application with the following fuctionality: insert, retrieve, delete and update/modify data in the database. A step by step guide will be highly appreciated. Thank you in advance

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  • Why am I getting a TypeLoadException when defining a custom profile?

    - by Jedidja
    I'm writing a .NET command-line application that will migrate users from an existing database into aspnetdb. To simplify the user-specific settings, I'm using the profile class that Joel Spolsky wrote about here. It works great in the ASP.NET MVC website, but for some reason it's throwing a TypeLoadException when being used from this new application. I'm not sure why the framework is trying to load the new class from System.Web.

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  • Algorithms or OO stuff or new technology

    - by Prashant
    I am trying to learn new stuff about jquery, html, asp .net mvc. I see two school of thoughts - Those who use oo concepts a lot and stress on more object oriented approach Those who rely heavily on algorithms and say a particular problem should take o(n) etc. I am not sure where to spend more time ? . Should I spend more time learning OO stuff or learn new stuff like jquery etc or learn travelling sales man algorithm etc ?

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  • LINQ Query Problem

    - by Ritz
    I want to use this in my application but I'm getting an error for GetByLatest().Cast<IRss>(); Please suggest a solution IList<IRss> news = new Trytable().GetByLatest().Cast<IRss>(); return new RssResult(news, "William Duffy - Glasgow Based ASP.NET Web Developer", "The latest news on ASP.NET, C# and ASP.NET MVC ");

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  • How can I use non-Silverlight assemblies in a Silverlight app?

    - by norbertB
    I'm working an project (pure hobby, "Sharping my skills") which has one unified back-end and multiple front-ends (ASP.NET MVC 1.0/JQuery and Silverlight 2). When I try to add reference to my business layer assembly in the Silverlight 2 project (VS2008); It gets rejected, because it's not a Silverlight assembly. Is their a way to include and reference a non-Silverlight assembly in a Silverlight app?

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  • linq2sql: singleton or using, best practices

    - by zerkms
    what is the preferred practice when linq2sql using (in asp.net mvc applications): to create "singleton" for DataContext like: partial class db { static db _db = new db(global::data.Properties.Settings.Default.nanocrmConnectionString, new AttributeMappingSource()); public static db GetInstance() { return _db; } } or to retrieve new instance when it needed within using: using (db _db = new db()) { ... } the usage of using brings some limitations on code. so I prefer to use singleton one. is it weird practice?

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  • ASP.Net RSS feed

    - by Joel Coehoorn
    How do I create an rss feed in ASP.Net? Is there anything built in to support it? If not, what third-party tools are available? I'm thinking webforms, not MVC, though I suppose since this isn't a traditional page the difference may be minimal.

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  • How would you organize this Javascript?

    - by Anurag
    How do you usually organize complex web applications that are extremely rich on the client side. I have created a contrived example to indicate the kind of mess it's easy to get into if things are not managed well for big apps. Feel free to modify/extend this example as you wish - http://jsfiddle.net/NHyLC/1/ The example basically mirrors part of the comment posting on SO, and follows the following rules: Must have 15 characters minimum, after multiple spaces are trimmed out to one. If Add Comment is clicked, but the size is less than 15 after removing multiple spaces, then show a popup with the error. Indicate amount of characters remaining and summarize with color coding. Gray indicates a small comment, brown indicates a medium comment, orange a large comment, and red a comment overflow. One comment can only be submitted every 15 seconds. If comment is submitted too soon, show a popup with appropriate error message. A couple of issues I noticed with this example. This should ideally be a widget or some sort of packaged functionality. Things like a comment per 15 seconds, and minimum 15 character comment belong to some application wide policies rather than being embedded inside each widget. Too many hard-coded values. No code organization. Model, Views, Controllers are all bundled together. Not that MVC is the only approach for organizing rich client side web applications, but there is none in this example. How would you go about cleaning this up? Applying a little MVC/MVP along the way? Here's some of the relevant functions, but it will make more sense if you saw the entire code on jsfiddle: /** * Handle comment change. * Update character count. * Indicate progress */ function handleCommentUpdate(comment) { var status = $('.comment-status'); status.text(getStatusText(comment)); status.removeClass('mild spicy hot sizzling'); status.addClass(getStatusClass(comment)); } /** * Is the comment valid for submission */ function commentSubmittable(comment) { var notTooSoon = !isTooSoon(); var notEmpty = !isEmpty(comment); var hasEnoughCharacters = !isTooShort(comment); return notTooSoon && notEmpty && hasEnoughCharacters; } // submit comment $('.add-comment').click(function() { var comment = $('.comment-box').val(); // submit comment, fake ajax call if(commentSubmittable(comment)) { .. } // show a popup if comment is mostly spaces if(isTooShort(comment)) { if(comment.length < 15) { // blink status message } else { popup("Comment must be at least 15 characters in length."); } } // show a popup is comment submitted too soon else if(isTooSoon()) { popup("Only 1 comment allowed per 15 seconds."); } });

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