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ASP.NET MVC 6 Hosting United Kingdom - HostForLIFE.eu :: Compressing an ASP.NET MVC Response Manually

clock December 19, 2019 04:21 by author Peter

This post is regarding compression your http result while not using IIS Dynamic Compression. And this is code to compress ASP.NET MVC 6 Response Manually:

using System;
using System.IO.Compression;
using System.Web;
namespace WebCompressionSample
{
    public static class ResponseCompressor
    {
        public static void Compress(HttpContext context)
        {
           {
               return;
            }
            string acceptEncoding = context.Request.Headers["Accept-Encoding"];
            if (string.IsNullOrEmpty(acceptEncoding))
            {
                return;
            }
            if (acceptEncoding.IndexOf("gzip",
                StringComparison.OrdinalIgnoreCase) > -1)
            {
                       context.Response.Filter = new GZipStream(
                       context.Response.Filter, CompressionMode.Compress);
                       context.Response.AppendHeader("Content-Encoding", "gzip");

            }
            else if (acceptEncoding.IndexOf("deflate",
                StringComparison.OrdinalIgnoreCase) > -1)
            {
                    context.Response.Filter = new DeflateStream(
                    context.Response.Filter, CompressionMode.Compress);
                   context.Response.AppendHeader("Content-Encoding", "deflate");
            }
        }
    }
}

Well, this shows a way to do the compression itself. Looking on however you are doing ASP.NET MVC, you most likely can call it otherwise.In my case, I referred to as it manually from an ASP.NET Webforms PageMethod (more on why below), however if you're using ASP.NET MVC for instance, you most likely wish to wrap it in an ActionFilter and apply that to the action you wish to compress its output. Let me apprehend within the comments or on twitter if you've got a problem implementing it in a particular situation.

IIS 7+ has built in dynamic compression support (compressing output of server-side scripts like ASP.NET, PHP, etc.). It’s not by default as a result of compression dynamic content means that running the compression for each request (because it doesn’t know what the server-side script can generate for each request, the purpose of using server-side programming is generating dynamic content).

Static compression on the opposite side (caching static files like styles and scripts) is on by default as a result of once the static resource is compressed, the compressed version is cached and served for each future request of an equivalent file (unless the file changes of course). I’d say if your server side scripts expect to come large text-based content (say, large data, even when paging, etc. like large reports or whatever), always turn dynamic compression on, a minimum of for the pages that expect to come massive data sets of text.

In several cases though the majority of huge files will be scripts (and probably images) will be the larger components though, which are usually taken care of (for scripts for example) by IIS static compression or ASP.NET Bundling.



ASP.NET MVC 6 Hosting Germany - HostForLIFE.eu :: How To Combine Angular.js with ASP.NET MVC?

clock November 21, 2014 05:31 by author Peter

Angular is a superb resource, however it took me a few time to identify a method to combine it elegantly along with ASP.NET MVC. This is essentially how I made it happen. First, you must build a new ASP.NET MVC app. Next step, install the Angular package through NuGet. Now for the customization.

The goal is to make use of the normal ASP. NET MVC navigation, unless for certain URLs, when we will permit Angular get over. So, http://www.yourdomain.com/Account/Login could be managed by ASP. NET (" ASP.NET-mode "), however http://www.yourdomain.com/#/Customers could be dealt with by Angular (" Angular-mode "). In fact, it is ASP.NET serving us the Customers page, however after that, we wish to use Angular for data-binding, navigation, routing, the forms, and so on.

Add a new Controller along with one method, Index (), which returns View (). Standard ASP. NET up till currently. I named mine AngularController.Next, add a View inside the corresponding folder (in my case :/Angular/Index. cshtml). During this view, found out your primary Angular view. Some thing such as:
@{
    ViewBag.Title = "Index";

<div ng-app="app">
    <div ng-controller="main as vm">
        <div ng-view class="shuffle-animation"></div>
    </div>
</div> 
@section scripts {
    @Scripts.Render("~/bundles/angular")
}

Now, when I am in "Angular-mode", I want my ASP.NET MVC include with Angular scripts. The Angular bundle looks something such as: (in /App_Start/BundleConfig.cs):
bundles.Add(new Bundle("~/bundles/angular").Include(
                      "~/Scripts/angular.js",
                      "~/Scripts/angular-animate.js",
                      "~/Scripts/angular-route.js",
                      "~/Scripts/angular-sanitize.js",
                      "~/Scripts/app/app.js",
                      "~/Scripts/app/config.js",
                      "~/Scripts/app/main.js",
                      "~/Scripts/app/customers/customers.js"));


The explanation I am not using a ScriptBundle is because we don't need ASP.NET to minify the Angular scripts. This leads to errors as a result of Angular generally depends on function arguments being certain strings.

In the meantime, minification is not necessary, however inside a production-environment, you'd need to make use of the minified Angular scripts. In app.js, config. js and main. js, I have place the required code to obtain Angular running. The most significant component is the getRoutes function in config.js :
function getRoutes() {
    return [
        {
            url: '/customers',
            templateUrl: '/Scripts/app/customers/customers.html'
        }
    ];
}


Finally, the customers.html and customers.js include my Angular logic and HTML markup for that particular page. This currently lets you navigate to http://localhost:1578/Angular/#/ (your portnumber may differ of course).

There you've it. ASP.NET MVC is serving the HTML page which contains references to Angular scripts and templates, the browser downloads everything, after which Angular wires all of it along (In fact, you may wish to configure ASP. NET to make use of a totally different URL to the AngularController)

Adding the following code with your navigation is as easy as adding this tag within your _Layout. cshtml file:
<li><a href="https://www.blogger.com/Angular/#/customers">Customers</a></li>

Do not forget the hash. Next, lets add a second page. This'll build the distinction in among what I have been calling " ASP. NET-mode " and " Angular-mode " more clear. Add a new html file and also a new javascript file onto the/Scripts/app/customers/folder, add the route to config. js and add the javascript file in the Angular bundle in BundleConfig. cs. The link inside my case might currently be :
<a href="https://www.blogger.com/Angular/#/customers/create">Create new customer</a>

Next step, whenever you operate the app, navigating from/Angular/#/customers to, say,/Account/Login can load the complete new page. However navigating from/Angular/#/customers to/Anguler/#/customers/create stays inside Angular, and merely loads the new template, " staying within " your SPA. You are able to sort of notice as a result of loading a new page " within " the SPA feels faster. So, we have effectively combined ASP. NET MVC along with Angular.js, allowing us to select where we want/need that.

 



ASP.NET MVC 6 Hosting with Paris (France) Server - HostForLIFE.eu :: Fixing Cached Values when Update Posted Form Values on Postback with ASP.MVC

clock November 18, 2014 08:56 by author Peter

While focusing on a project I encountered a wierd issue on my ASP.NET MVC 6. I produced an easy registration form which posted to my controller method, that obtained a view design like a parameter. Inside my method I had the need to update the values for this View Model prior to passing it to the user through a similar View. But, this really is exactly in which I encountered " strange " outcomes. Regardless of the correct data binding, correct code updating the design values, and also the correct design becoming passed straight into the view, front-end users still obtained the recent form values they initially posted.

This was initially puzzling, because I can notice the model I'd been passing in was the right way up to date. Initially I assumed it was actually some type of caching issue and tried numerous choices, however to no avail. Eventually I found out the matter was coming coming from the Razor Helper I'd been utilizing - specifically the EditorFor method (though this relates to any Razor helper method).

Let us have a closer look. Below is an easy registration view :
@model  posting.Controllers.Guest
 <h2>Register</h2>
 <p>Welcome...</p>
@using (Html.BeginForm())
{
    <table>
        <tr>
            <td>
                @Html.LabelFor(g => g.FirstName)
            </td>
            <td>
                @Html.EditorFor(g => g.FirstName)
            </td>
        </tr>
        <tr>
            <td>
                @Html.LabelFor(g => g.LastName)
            </td>
            <td>
                @Html.EditorFor(g => g.LastName)
            </td>
        </tr>
        <tr>
            <td>
                @Html.LabelFor(g => g.Highlight)
            </td>
            <td>
                @Html.EditorFor(g => g.Highlight)
            </td>
        </tr>
    </table>
    <input type="submit" />
}

Now, I set up 2 simple controller methods to demonstrate that error. public ActionResult Register()
{
      return View();
}
[HttpPost]
public ActionResult Register(Guest guest)
{
    guest.FirstName = "Peter";
    return View(guest);

}

The first register method is really a Get request that will returns a simple sign up form using a first name and last name. The 2nd method will be the Post version from the first methodology, which means the values our user enters directly into form are certain to get mapped to our Guest view model. For demonstration purposes, I'm changing all users' names to Peter. But, when you operate this and fill out the form, you may notice the name never comes again as Peter - it constantly comes again as no matter what the user entered. The explanation for right here is the EditorFor helper method. These helper ways retrieve their information from ModelState first, then due to model object which is passed in. ModelState is essentially metadata in regards to the current model assigned from the MVC Model Binder when a request is mapped into your controller. Therefore in case the ModelState presently has values mapped from the MVC Model Binder, Razor Helpers can use those. The answer to get this is easy.
[HttpPost]
public ActionResult Register(Guest guest)
{
    ModelState.Remove("FirstName");
    guest.FirstName = "Peter";
    return View(guest);
}

That is literally all we need to do - this'll eliminate the FirstName property value set from the default MVC Model Binder and permit our personal code to write down a whole new value. You may also clear out the complete ModelState directly, as noticed beneath :
[HttpPost]
public ActionResult Register(Guest guest)
{
    ModelState.Remove("FirstName");
    guest.FirstName = "Peter";
    return View(guest);
}

This is a very simple issue however could be terribly frustrating in case you do not know what is happening.



ASP.NET MVC 6 Hosting with Paris (France) Server - HostForLIFE.eu :: Creating Calendar using ASP.NET MVC, Entity Framework and jQuery

clock November 14, 2014 05:22 by author Peter

Now, I we are going to learn how to create an  Event Calendar using ASP.NET MVC 6, Entity Framework and jQuery Fullcalendar plugin. First thing, that you have to do is Install the full calendar plugin using the Nuget Package Manager with the following command:

Install-Package jQuery.Fullcalendar

After that you'll be able to either add the scripts inside the BundleConfig. cs or you could reference all of these immediately in the _Layout. cshtml page (Master Page)
//Calendar css file
            bundles.Add(new StyleBundle("~/Content/fullcalendarcss").Include(
                     "~/Content/themes/jquery.ui.all.css",
                     "~/Content/fullcalendar.css"));
            //Calendar Script file
            bundles.Add(new ScriptBundle("~/bundles/fullcalendarjs").Include(
                      "~/Scripts/jquery-ui-1.10.4.min.js",
                      "~/Scripts/fullcalendar.min.js"));
@ViewBag.Title - My ASP.NET Application
    @Styles.Render("~/Content/css")
    @Styles.Render("~/Content/fullcalendarcss")
    @Scripts.Render("~/bundles/modernizr")
    @Scripts.Render("~/bundles/jquery")
    @Scripts.Render("~/bundles/fullcalendarjs")


Currently Determine the full calendar in the Home/Index.cshtml page. We really need to outline the calendar along with page identity therefore build a div with all the id “calendar”
<div id=”calendar”></div>

Then, you must add the code below, in the Home controller:
public ActionResult GetEvents(double start, double end)
        {
            var fromDate = ConvertFromUnixTimestamp(start);
            var toDate = ConvertFromUnixTimestamp(end);
            //Get the events
            //You may get from the repository also
            var eventList = GetEvents();
            var rows = eventList.ToArray();
            return Json(rows, JsonRequestBehavior.AllowGet);
        }
        private List GetEvents()
        {
            List eventList = new List();
            Events newEvent = new Events{
                id = "1",
                title = "Event 1",
                start = DateTime.Now.AddDays(1).ToString("s"),
                end = DateTime.Now.AddDays(1).ToString("s"),
                allDay = false
            };
            eventList.Add(newEvent);
            newEvent = new Events
            {
                id = "1",
                title = "Event 3",
                start = DateTime.Now.AddDays(2).ToString("s"),
                end = DateTime.Now.AddDays(3).ToString("s"),
                allDay = false
            };
            eventList.Add(newEvent);
            return eventList;       
}      
private static DateTime ConvertFromUnixTimestamp(double timestamp)
        {          
            var origin = new DateTime(1970, 1, 1, 0, 0, 0, 0);
            return origin.AddSeconds(timestamp);
        }
Now, Make an Events class under the Models folder:
public class Events
    {
        public string id { get; set; }
        public string title { get; set; }
        public string date { get; set; }
        public string start { get; set; }
        public string end { get; set; }
        public string url { get; set; }
        public bool allDay { get; set; }
    }

Then Add the code below to your page:

@section scripts{
<script type=”text/javascript”>// <![CDATA[
$(document).ready(function () {
$('#calendar').fullCalendar({
theme: true,

defaultView: 'agendaDay',
editable: false,
events: "/home/getevents/"
});
});
// ]]></script>
}



European ASP.NET MVC 6 Hosting - HostForLIFE.eu :: How to Duplicate Controller Names in ASP.NET MVC Areas ?

clock November 11, 2014 07:02 by author Peter

By convention, ASP.NET MVC 6 applications use HomeController to discuss with the controller that handles requests created to the root of the application. this can be designed by default with the subsequent route registration:

routes.MapRoute(
    name: "Default",
    url: "{controller}/{action}/{id}",
    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);

If you choose to partition your application using the ASP.NET MVC Areas feature, it’s commonplace that you simply would need calls to the root of every space to be handled employing a similar convention, via a HomeController.  However, if you add a HomeController to a part (for instance, an Admin area), you'll find yourself faced with this exception:

Multiple types were found that match the controller named ‘Home’. This can happen if the route that services this request (‘{controller}/{action}/{id}’) does not specify namespaces to search for a controller that matches the request. If this is the case, register this route by calling an overload of the ‘MapRoute’ method that takes a ‘namespaces’ parameter.

The request for ‘Home’ has found the following matching controllers:
AreaDemo.Areas.Admin.Controllers.HomeController
AreaDemo.Controllers.HomeController

Unfortunately by default you can not have duplicate controller names in ASPNET MVC Areas (or between a part and also the root of the application). fortunately, the fix for this can be pretty easy, and also the exception describes the step you wish to require.  Once you’ve added a part, you may have 2 completely different places (by default) wherever routes are defined: one in your root application and one in your area registration. you may need to regulate each of them to specify a namespace parameter. the root registration will change to one thing like this:
routes.MapRoute(
    name: "Default",
    url: "{controller}/{action}/{id}",
    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },
    namespaces: new string[] {"AreaDemo.Controllers"}
);

Likewise, at intervals the AdminAreaRegistration.cs class, the default RegisterArea methodology feels like this:
public override void RegisterArea(AreaRegistrationContext context)
{
    context.MapRoute(
        "Admin_default",
        "Admin/{controller}/{action}/{id}",
        new { action = "Index", id = UrlParameter.Optional}
        );
}

To adjust it to support a default HomeController and namespaces, it ought to be updated like so:
public override void RegisterArea(AreaRegistrationContext context)
{
    context.MapRoute(
        "Admin_default",
        "Admin/{controller}/{action}/{id}",
        new { controller="Home", action = "Index", id = UrlParameter.Optional},
        new string[] {"AreaDemo.Areas.Admin.Controllers"}
        );
}

With that changes in place, you must currently be ready to support the HomeController convention at intervals your MVC Areas, with duplicate controller names between areas and also the root of the applying.



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