Speedy.Net

Hi, I've been looking for quite some time for a complete solution to uploading files in ajax for my site. For those of you who don't know, browsers won't let you upload files without making a full page reload. I haven't been able to find a good, working and cross browser solution for this problem. So after much research and development I have finally managed to solve this problem. Lets take a look at the following controller. public class HomeController : Controller { public ActionResult Index() { return View(); } [HttpPost] public ActionResult UploadImage(HttpPostedFileBase image) { try { if (Request.ContentLength > 1024 * 1024 * 2) { return UploadCompanyLogoResult(new { success = false, error = "File size too big. Maximum file size is 2MB." }); } if (Request.Files.Count == 0) { return UploadCompanyLog...

Hey, For some time I've been looking for a good way to couple between the property, and it's display name. Some may say it's a bad practice, but I think sometimes it has it's advantages. So I solved it using DescriptionAttribute. The class is in System.dll, so we don't need to add any reference. Let's take a look on the following class: public class UserChecklistEntity { public bool TakeTheTour { get; set; } public int VisitsCount { get; set; } } Let's decorate the properties with DescriptionAttributes: public class UserChecklistEntity { [Description("Take the tour")] public bool TakeTheTour { get; set; } [Description("Visits count")] public int VisitsCount { get; set; } } And now for the interesting part, add this extension method: public static class ObjectExtensions { public static string GetDescription<T>(this T obj, Expression<Func<T, object>> expression) where T : class { ...

Hey, Lately I've been building many infrastructures for my company's website and I wanted to expose those infrastructures in the most natural way that coders are used to. One of the problems I spent time on was exposing the infrastructures on *.cshtml files. I didn't want to use static classes - because it's not a natural way, and not very trivial. So I managed to extend the class that represents the view, and by that add more properties and functions to it. public abstract class ViewBase<TModel> : WebViewPage<TModel> where TModel : class { public LayoutConfiguration LayoutConfiguration { get; private set; } public ViewBase() { LayoutConfiguration = LayoutConfiguration.GetInstance(); } public void DoWork() { } } And now on your Web.config (in the Views folder) replace this line: <pages pageBaseType="System.Web.Mvc.WebViewPage"> With this one: <pages pageBaseType="namespace.ViewBase...

Hey all, I've been searching for a very long time an easy way to impersonate current user while running in a "SYSTEM" user credentials. I haven't found any code that does it and actually works. So I managed to combine pieces of code from several places, and added some of my own. This helper class exposes 2 functions: 1. Get current user impersonated scope - in this scope you can do pretty much whatever you want in the current user credentials. 2. Start a process as current user. public static class ImpersonationUtils { private const int SW_SHOW = 5; private const int TOKEN_QUERY = 0x0008; private const int TOKEN_DUPLICATE = 0x0002; private const int TOKEN_ASSIGN_PRIMARY = 0x0001; private const int STARTF_USESHOWWINDOW = 0x00000001; private const int STARTF_FORCEONFEEDBACK = 0x00000040; private const int CREATE_UNICODE_ENVIRONMENT = 0x00000400; private const int TOKEN_IMPERSONATE = 0x0004; private const int TOKEN_...

Hey all, Few days ago I was challenged by a good friend and colleague to write a generic model binder for a dynamic json. Why does he need such a thing ? I'll explain: Normally, when you write a classic website using any platform, the contract between the client and the server is obvious and well known. However, if you write a complex web system, and you have the need to build your client model dynamically without creating a massive model on the server that handles all kinds of properties and values, you might be interested in getting a generic dictionary that contains all your client values. To implement it I used a state machine to parse the json: public class DictionaryModelBinder : DefaultModelBinder { private const string _dateTimeFormat = "dd/MM/yyyy HH:mm:ss"; private enum StateMachine { NewSection, Key, Delimiter, Value, ValueArray } public override object BindModel(ControllerContext controllerC...

Hey, Have you ever wanted to test your controller actions with the logic you add with ActionFilterAttributes? Well, I did. So I wrote this helper class, which executes the ActionFilterAttribute methods. public class FilterAttributeTester { public ActionExecutingContext ExecuteOnActionExecuting<TAttribute>(Controller aController, Func<ActionResult> aAction) where TAttribute : ActionFilterAttribute { var actionExecutingContext = CreateActionExecutingContext(aController, aAction); var attribute = GetAttribute<TAttribute>(aAction); attribute.OnActionExecuting(actionExecutingContext); return actionExecutingContext; } public ActionExecutedContext ExecuteOnActionExecuted<TAttribute>(Controller aController, Func<ActionResult> aAction) where TAttribute : ActionFilterAttribute { var actionExecutedContext = CreateActionExecutedContext(aController, aAction); var attribute = GetAttri...