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  • What are the best blogs for staying up to date on C#, ASP.NET, LINQ, SQL, C++, Ruby, Java, Python?

    - by Arj
    Apologies if this repeats another - but I couldn't fine one like it. My day to day programming spans a fair number of technologies: C#, ASP.NET, LINQ / SQL, C++, Ruby, Java, Python in approximately that order. It's a struggle to keep up to date on any of best practices, new ideas, innovation and improvements, let alone all. Therefore, what would your top 1 blog be in each of these technologies and which technology do you find easiest to stay up to date with? I'd have a bias towards blogs with broad and high level rather than narrow and detailed content / solutions / examples.

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  • How do I setup a Membership Provider in my existing database using ASP.NET MVC?

    - by Singson
    For some reason, the idea of setting up Membership in ASP.NET MVC seems really confusing. Can anyone provide some clear steps to setup the requisite tables, controllers, classes, etc needed to have a working Membership provider? I know that the Demo that MVC ships with has an Accounts controller. However, should I be using this in my own project? What do I need to get my existing database ready if so? If not, how do I learn what I need to do to implement a membership provider?

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  • Are there .NET Framework methods to parse an email (MIME)?

    - by Neil C. Obremski
    Is there a class or set of functions built into the .NET Framework (3.5+) to parse raw emails (MIME documents)? I am not looking for anything fancy or a separate library, it needs to be built-in. I'm going to be using this in some unit tests and need only grab the main headers of interest (To, From, Subject) along with the body (which in this case will always be text and therefore no MIME trees or boundaries). I've written several MIME parsers in the past and if there isn't anything readily available, I'll just put together something from regular expressions. It would be great to be able to do something like: MailMessage msg = MailMessage.Parse(text); Thoughts?

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  • Does SQL Server 2005 error message numbers back to the asp.net application?

    - by Duke
    I'd like to get the message number and severity level information from SQL Server upon execution of an erroneous query. For example, when a user attempts to delete a row being referenced by another record, and the cascade relationship is "no action", I'd like the application to be able to check for error message 547 ("The DELETE statement conflicted with the REFERENCE constraint...") and return a user friendly and localized message to the user. When running such a query directly on SQL Server, the following message is printed: Msg 547, Level 16, State 0, Line 1 <Error message...> In an Asp.Net app is this information available in an event handler parameter or elsewhere? Also, I don't suppose anyone knows where I can find a definitive reference of SQL Server message numbers?

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  • How to modify the HTML and BODY tags in an ASP.NET page without adding runat=server to the elements?

    - by jon333
    In an ASP.NET web forms project that is not quite ready to be upgraded from 2.0 to 4.0 , there is a change that needs to be made to allow modifications to the HTML and BODY tags on the pages without adding runat=server to the tags which results in the 2.0 styled "ugly ids" like "ctrl_100..." For example, how could we change these using JavaScript, a Response Filter (the regex to find these specific tags would really help on this one), or something else...from: <html xmlns="//www.w3.org/1999/xhtml"> <body> To: <html lang="jp=JP" xmlns="//www.w3.org/1999/xhtml" dir="rtl"> <body dir="rtl"> JavaScript seems like a possibility, but functions from the server-side could would determine the language and direction the page should have.

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  • How to specify HTTP expiration header? (ASP.NET MVC+IIS)

    - by Marek
    I am already using output caching in my ASP.NET MVC application. Page speed tells me to specify HTTP cache expiration for css and images in the response header. I know that the Response object contains some properties that control cache expiration. I know that these properties can be used to control HTTP caching for response that I am serving from my code: Response.Expires Response.ExpiresAbsolute Response.CacheControl or alternatively Response.AddHeader("Expires", "Thu, 01 Dec 1994 16:00:00 GMT"); The question is how do I set the Expires header for resources that are served automatically, e.g. images, css and such?

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  • How can I most accurately calculate the execution time of an ASP.NET page while also displaying it o

    - by henningst
    I want to calculate the execution time of my ASP.NET pages and display it on the page. Currently I'm calculating the execution time using a System.Diagnostics.Stopwatch and then store the value in a log database. The stopwatch is started in OnInit and stopped in OnPreRenderComplete. This seems to be working quite fine, and it's giving a similar execution time as the one shown in the page trace. The problem now is that I'm not able to display the execution time on the page because the stopwatch is stopped too late in the life cycle. What is the best way to do this?

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  • Make a Method of the Business Layer secure. best practice / best pattern [.net/c#]

    - by gsharp
    Hi We are using ASP.NET with a lot of AJAX "Page Method" calls. The WebServices defined in the Page invokes methods from our BusinessLayer. To prevent hackers to call the Page Methods, we want to implement some security in the BusinessLayer. We are struggling with two different issues. First one: public List<Employees> GetAllEmployees() { // do stuff } This Method should be called by Authorized Users with the Role "HR". Second one: public Order GetMyOrder(int orderId) { // do sutff } This Method should only be called by the owner of the Order. I know it's easy to implement the security for each method like: public List<Employees> GetAllEmployees() { // check if the user is in Role HR } or public Order GetMyOrder(int orderId) { // check if the order.Owner = user } What I'm looking for is some pattern/best practice to implement this kind of security in a generic way (without coding the the if then else every time) I hope you get what i mean :-) Thanks for you help.

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  • Why a thread is aborted in ASP.NET MVC (again)?

    - by Dario Solera
    Here is what I do in a controller action: create and start a new Thread that does a relatively long processing task (~30 seconds on average, but might be several minutes) immediately return the page response so the user knows processing has started (trivially, a Json with a task ID for polling purposes). At some random point, ThreadAbortException is thrown, so the async task does not complete. The exception is not thrown every time, it just happens randomly roughly 25% of the times. Points to note: I'm not calling Response.End or Response.Redirect - there isn't even a request running when the exception is thrown I tried using ThreadPool and I got the same behavior I know running threads in ASP.NET has several caveats but I don't care right now Any suggestion?

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  • ASP.NET MVC: trying out a script injection hangs Visual Studio 2010 completely?

    - by Mark Redman
    Wondering if anyone has an idea of whats going on: I am new to ASP.NET MVC and am trying out a few things with jquery/ajax. The basic scenario is a dropdownlist with an add button next to it. Clicking the add button launches a jquery ui dialog with a textbox form, entering a value saves the item to the database and refreshes the drop-downlist. The dropdownlist is re-populated using a JSON result. This all works ok. I thought I would try a script injetion attack, ie add the text: alert("oh dear") to seee what would happen and to check if I need to encode anything. When I try and save this item (similar to the same process of adding a plain text entry) Visual Studio 2010 Beta 2 hangs completely. Any ideas? UPDATE: It happens when posting: "</"

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  • How to run lengthy tasks from an ASP.NET page?

    - by Jimmy C
    I've got an ASP.NET page with a simple form. The user fills out the form with some details, uploads a document, and some processing of the file then needs to happens on the server side. My question is - what's the best approach to handling the server side processing of the files? The processing involves calling an exe. Should I use seperate threads for this? Ideally I want the user to submit the form without the web page just hanging there while the processing takes place. I've tried this code but my task never runs on the server: Action<object> action = (object obj) => { // Create a .xdu file for this job string xduFile = launcher.CreateSingleJobBatchFile(LanguagePair, SourceFileLocation); // Launch the job launcher.ProcessJob(xduFile); }; Task job = new Task(action, "test"); job.Start(); Any suggestions are appreciated.

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  • ASP.NET MVC. Hot to guess autogenerated id value ?

    - by Andrew Florko
    My web form contains list of dynamic fields that are generated like this: <% for (int i = 0; i < Model.Options.Count; i++) { %> ... <%= Html.Hidden("Options[" + i + "].Id", Model.Options[i].Id)%> <%= Html.CheckBox("Options[" + i + "].Selected", Model.Options[i].Selected)%> ... This maps perfectly on array of controller method parameters as described in Model Binding To A List article. I want to add label for checkboxes to title them, but I have to guess their ids in hmtl layout. Options[" + i + "].Selected turns into Options_0__Selected How can I avoid hardcoding Id generation in-built asp.net mvc rules? Thank you advance.

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  • How to show a message box in an ASP.NET page?

    - by Praveen
    As I was a Windows programmer it was so easy to show a message box on a form. But on an ASP.NET page I don't know how can I show it? Actually I have some condition and based on that I want to show a message box to the user to get his/her response and based on that response I want to continue. For example I want to ask the user "Do you want to continue?" with two buttons "Yes" & "No".

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  • In ASP.NET MVC Should A Form Post To Itself Or Another Action?

    - by Sohnee
    Which of these two scenario's is best practice in ASP.NET MVC? 1 Post to self In the view you use using (Html.BeginForm) { ... } And in the controller you have [HttpGet] public ActionResult Edit(int id) [HttpPost] public ActionResult Edit(EditModel model) 2 Post from Edit to Save In the view you use using (Html.BeginForm("Save", "ControllerName")) { And in the controller you have [HttpGet] public ActionResult Edit(int id) [HttpPost] public ActionResult Save(EditModel model) Summary I can see the benefits of each of these, the former gives you a more restful style, with the same address being used in conjunction with the correct HTTP verb (GET, POST, PUT, DELETE and so on). The latter has a URL schema that makes each address very specific. Which is the correct way to do this?

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  • How to implement User base security not role base in asp.net?

    - by Gaurav
    Hi, I have to implement User base security in my Web project using .Net3.5. Followings are some we need: Roles can be Admin, Manage, Editor, Member etc User can have multiple roles Every roles has its own dynamic menus and restrictions/resources All menus and interface will populate dynamically from Database I heard some where this kind of i.e user base security can be implemented using HashTable but I dont know how is it? Today I came to know that for this kind of work Java people use Interceptor Design patterns. So, how could I do the same in asp.net C#?

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  • Unable to debug ASP.NET Applicatation using VS 2008 on IIS 7 running on Windows 7 x64

    - by rsteckly
    Hi, I've been trying to debug an existing asp.net web application that requires me to debug against an IIS website. I've installed the app and can navigate to it on localhost. However, when I start VS 2008 as an Administrator and try to debug it, I get a message "Unable to start debugging on the web server. The IIS worker process for the launched URL is not currently running." I've looked through some of the help file contents and can't seem to figure out what is going on. Clearly, the IIS worker process IS running, since I can navigate to the site locally without VS open. My boss has suggested that it might be because my OS is 64 bit. Any ideas?

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  • Can I create a transaction using ADO NET Entity Data Model?

    - by Junior Mayhé
    Hi is it possible on the following try-catch to execute a set of statements as a transaction using ADO NET Entity Data Model? [ValidateInput(false)] [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create(Customer c) { try { c.Created = DateTime.Now; c.Active = true; c.FullName = Request.Form["FirstName"]; db.AddToCustomer(c); db.SaveChanges(); Log log = new Log();//another entity model object log.Created = DateTime.Now; log.Message = string.Format(@"A new customer was created with customerID {0}", c.CustomerID); db.AddToLog(log); db.SaveChanges(); return RedirectToAction("CreateSuccess", "Customer"); } catch { return View(); } } Any thoughts would be very appreciated.

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  • Is the .Net HashSet uniqueness calculation completely based on Hash Codes?

    - by RobV
    I was wondering whether the .Net HashSet<T> is based completely on hash codes or whether it uses equality as well? I have a particular class that I may potentially instantiate millions of instances of and there is a reasonable chance that some hash codes will collide at that point. I'm considering using HashSet's to store some instances of this class and am wondering if it's actually worth doing - if the uniqueness of an element is only determined on its hash code then that's of no use to me for real applications MSDN documentation seems to be rather vague on this topic - any enlightenment would be appreciated

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  • Execute a dll function in ASP.Net Bin not working, II7.

    - by Wayne Lo
    I am developing a remote control application where a client (aspx page in a browser) can request a server to "launch a notepad" (for testing purpose, for real life, turning off a light bulb, etc). So I created a dll with a simple function for launching the notepad (on the server side) and dropped this dll in the root bin folder. It worked fine when the aspx page is running under ASP.NET development server (launched from Visual Studio). But when I tested the same aspx page under a FireFox browser, it did not work (launch the notepad) even though it did call for the same function (I stepped through in debugger). Is this a permission issue? How do I set this up in IIS manager, or even better in web.config? Please help.

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  • Does Anyone Know Of A Solid Web Example Using ASP.NET MVC1 or MVC2, NHibernate, Fluent NHibernate &

    - by Sara
    I am looking for solid non-console examples of how to use ASP.NET MVC1 or MVC2, NHibernate, Fluent NHibernate & Castle. I looked at Sharp Architecture and its just too much to digest for my newbie mind. I need a clean, clear, concise Step A, Step B, Step C tutorial or a solid example that is a web application and not a console application. I have searched and searched and searched and I have found incomplete examples (examples with just enough information to make me say where does that code go), console applications and no good web application examples. Does anyone know of a COMPLETE web example? If I see another console example, I'm going to scream....

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  • ASP.net Treeview/Listview combination or alternative: Tutorials? Help?

    - by jlrolin
    I need to create an ASP.net page that has a control on the page that has a five-level TreeView on the left side of the page, and accounting balances on the right side the coincide with each breakdown in the tree. Top level is company, next is group, next is program, etc... and the balances break down accordingly. I've seen that there are controls out there such as TreeView/ListView combination controls that can do this. Is there any tutorials or help out there on how to go about accomplishing this without paying for controls? Could a treeview do this alone by spanning data across the entire length of the columns since every level will have totals on it?

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  • How to pass an asp.net control to a jQuery ajax call?

    - by Abe Miessler
    I have the following jQuery event that gets fired every time an anchor is clicked. How can I pass a asp.net control (lets say a textbox called "tb_name") as one of the parameters, in addition to the "target" parameter i'm already passing? <script type="text/javascript"> $(document).ready(function() { $("a").click(function(event) { $.ajax({ type: "POST", url: "Default.aspx/Click", data: "{target:'" + event.target + "'}", contentType: "application/json; charset=utf-8", dataType: "json", error: function(xhr, ajaxOptions, thrownError) { alert(xhr.responseText); $("#myContent").html(xhr.statusText); //alert(xhr.responseText); }, success: function(msg) { alert(msg.d); } }); return false; }) }) </script>

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  • How to create HTML email with embeded image and show it in the default mail client using .net (c#)?

    - by NVM
    If you look at the Snip tool in windows there is an option to send the snip as an embedded attachment in the default mail client (I guess as an html email). I need exactly that. At the moment I am using simple MAPI to attach the image but that does not allow embedding. One key requirement is that it should be created and then shown in the default mail client. I don't think I can use System.Net.Mail for that. Or can I? Its a WPF application using c#.

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  • In .NET, what thread will Events be handled in?

    - by Ben
    I have attempted to implement a producer/consumer pattern in c#. I have a consumer thread that monitors a shared queue, and a producer thread that places items onto the shared queue. The producer thread is subscribed to receive data...that is, it has an event handler, and just sits around and waits for an OnData event to fire (the data is being sent from a 3rd party api). When it gets the data, it sticks it on the queue so the consumer can handle it. When the OnData event does fire in the producer, I had expected it to be handled by my producer thread. But that doesn't seem to be what is happening. The OnData event seems as if it's being handled on a new thread instead! Is this how .net always works...events are handled on their own thread? Can I control what thread will handle events when they're raised? What if hundreds of events are raised near-simultaneously...would each have its own thread?

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  • Which jQuery/css menu library for working with ASP.NET TreeView or Menu controls.

    - by ProfK
    I'm looking for a good jQuery or CSS, or combo, library to enance my left side menu in an an intranet application. I don't like the 'hover only' expand/collapse style of the ASP.NET Menu control on its own, and I don't like the 'icon-click only' expand/collapse style of the TreeView control on its own. I plan on trying the CSS Control Adapters, to render the menu with some self-respect, i.e. as nested <ul> or <ol> elements instead of the usual orgy of tables. Beyond that, I need something to give a bit of style and menulike behaviour to these nested lists, and I would prefer a jQuery plugin for this. Which should I use?

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