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ASP.NET MVC 6 Hosting - HostForLIFE.eu :: How to Get Started With React Using TypeScript and ASP.NET MVC 6?

clock April 4, 2016 20:18 by author Anthony

All of the major frameworks (Web API, forms, and MVC) have been rolled out under the umbrella of a single unified programming model. There’s a new built-in dependency framework, and there are Tag Helpers. All this has had a major impact on development. A lot has changed in the world of ASP.NET 5 and MVC 6. But In this tutorial, I will explain about how to get started with React using TypeScript and ASP.NET 5 MVC 6.

But before we start, there are few things you will need to install :

  • Microsoft Visual Studio 2015 (Community Edition is free and it’s open source!)
  • TypeScript (included in VS2015)
  • Node.js and NPM (included in VS2015


    Deprecated, use Typings:
  • Typings. Run npm install typings -g to install globally.
  • Webpack. Run npm install webpack -g to install globally.

 

Create a New ASP.NET MVC 6 Project

First create a new ASP.NET Web Application project. In the next dialog choose Empty template under ASP.NET 5 Templates. This is to keep things simple and we will only be adding add the stuff we actually need.

Install ReactJS.NET

Next you’ll need to modify your project.json file so open it up. To work with React in .NET we’ll be using a library called ReactJS.NET. It will allow you to do server side (or isomorphic) rendering which is cool but more on that later.

Before installing ReactJS.NET we’ll need to remove "dnxcore50": { } line from project.json to make it work. Then add "React.AspNet": "2.1.2" and "Microsoft.AspNet.Mvc": "6.0.0-rc1-final" under dependencies and save the file. Both ASP.NET MVC 6 and ReactJS.NET should get immediately installed.

Your project.json should now look something like this:

{
  "version": "1.0.0-*",
  "compilationOptions": {
    "emitEntryPoint": true
  },

  "dependencies": {
    "Microsoft.AspNet.IISPlatformHandler": "1.0.0-rc1-final",
    "Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final",
    "Microsoft.AspNet.Mvc": "6.0.0-rc1-final",
    "React.AspNet": "2.1.2"
  },

  "commands": {
    "web": "Microsoft.AspNet.Server.Kestrel"
  },

  "frameworks": {
    "dnx451": { }
  },

  "exclude": [
    "wwwroot",
    "node_modules"
  ],
  "publishExclude": [
    "**.user",
    "**.vspscc"
  ]
}


Create a new folder called app under your project. This is where we’ll be hosting all our React components. Right-click that folder and add a new item. Search for a TypeScript JSX file template and name your file HelloWorld.tsx. Add the following lines.

/// <reference path="../../../typings/main/ambient/react/index.d.ts" />
import React = require('react');

// A '.tsx' file enables JSX support in the TypeScript compiler,
// for more information see the following page on the TypeScript wiki:
// https://github.com/Microsoft/TypeScript/wiki/JSX

interface HelloWorldProps extends React.Props<any> {
    name: string;
}

class HelloMessage extends React.Component<HelloWorldProps, {}> {
    render() {
        return <div>Hello {this.props.name}</div>;
    }
}
export = HelloMessage;

You’ll see that the react.d.ts cannot be resolved. To fix this you’ll need to run typings install react --ambient --save in the Package Manager console to install the TypeScript definitions for react. Visual Studio will still complain about the --module flag that must be provied. To fix this add a tsconfig.json in the app folder with the following content:

{
  "compilerOptions": {
    "module": "commonjs",
    "target": "es6",
    "jsx": "preserve"
  }
}

Note : If the JSX isn’t being generated make sure that you have enabled TypeScript compilation in Visual Studio. To do this check the Automatically compile TypeScript files which are not part of the project under Tools -> Options -> TypeScript -> Project -> General in Visual Studio.

 

Set Up Web Pack

We’ll be using Webpack although you could use any other module bundler as well. You should have installed Webpack already but if you haven’t check out the beginning of this post on how to do it.

In the app folder create index.js:

module.exports = {
    // All the components you'd like to render server-side
    HelloMessage: require('./HelloWorld')
};

This will be used to tell Webpack which components to bundle together for server and client side rendering. Right now we only have the HelloWorld component.

Next in your wwwroot folder add two files called client.js and server.js. They both share the same content for this project:


// All JavaScript in here will be loaded client/server -side.
// Expose components globally so ReactJS.NET can use them
var Components = require('expose?Components!./../app');

The last thing that’s left is a Webpack configuration file. Create webpack.config.js under your project:

var path = require('path');
module.exports = {
    context: path.join(__dirname, 'wwwroot'),
    entry: {
        server: './server',
        client: './client'
    },
    output: {
        path: path.join(__dirname, 'wwwroot/build'),
        filename: '[name].bundle.js'
    },
    module: {
        loaders: [
            // Transform JSX in .jsx files
            { test: /\.jsx$/, loader: 'jsx-loader?harmony' }
        ],
    },
    resolve: {
        // Allow require('./blah') to require blah.jsx
        extensions: ['', '.js', '.jsx']
    },
    externals: {
        // Use external version of React (from CDN for client-side, or
        // bundled with ReactJS.NET for server-side)
        react: 'React'
    }
};


Webpack will need some additional modules to do the bundling. Right-click the project and select “Add item”. In the dialog choose NPM Configuration file and name it package.json:

{
    "version": "1.0.0",
    "name": "ASP.NET",
    "private": true,
    "devDependencies": {
        "webpack": "1.12.9",
        "expose-loader": "0.7.1",
        "jsx-loader": "0.13.2"
    }
}


Once again saving the file will execute NPM and install the three packages.

Finally open command prompt and browse to the project’s folder (where webpack.config.js is located). Then type webpack, press enter and Webpack should beautifully build two JavaScript bundles under wwwroot/build. Of these client.bundle.js should be included client side and server.bundle.js should be included server side. Remember to run webpack each time you have modified your React components or add this step to your build process.

Add a controller and a view

Next, do the obvious thing of creating a controller and a view so that we can host our fancy React component somewhere. Create a folder called Controllers under the project and add a new controller called HomeController under the folder. The controller should have only one GET Index method like so:

using Microsoft.AspNet.Mvc;
namespace React.MVC6.Sample.Controllers
{
    public class HomeController : Controller
    {
        // GET: /<controller>/
        public IActionResult Index()
        {
            return View();
        }
    }
}

After that add a folder called Views under the project. Under Views add a new folder called Shared. Create a layout file called _Layout.cshtml there with the following content:

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>@ViewBag.Title</title>
</head>
<body>
    <div>
        @RenderBody()
    </div>
</body>
</html>

Then add a few defaults for our views. In the Views folder add a new file called _ViewImports.cshtml with just the following content. This will ensure that ReactJS.NET is by default available in all our views.

@using React.AspNet


Create another file called _ViewStart.cshtml under Views folder with this content:

@{
    Layout = "~/Views/Shared/_Layout.cshtml";
}

Finally create a new folder called Home under Views and create a file called Index.cshtml in there. Place the following in there to render your React component with initial data:

@{
    ViewBag.Title = "Index";
}

<h1>Hello World</h1>

@Html.React("Components.HelloMessage", new { name = "Sam" })

<script src="https://fb.me/react-0.14.0.min.js"></script>
<script src="https://fb.me/react-dom-0.14.0.min.js"></script>
<script src="@Url.Content("/build/client.bundle.js")"></script>

@Html.ReactInitJavaScript()

Including the javascripts in the view like this isn’t very pretty but you’ll get the idea. The name that we pass to the component could as well come from a model passed down from the controller.

Configure the Web Application

Then we will need to make sure that ASP.NET MVC 6 and React get loaded properly when the application starts up. So open up your startup.cs file and replace the contents with this:

using Microsoft.AspNet.Builder;
using Microsoft.AspNet.Hosting;
using Microsoft.AspNet.StaticFiles;
using Microsoft.Extensions.DependencyInjection;
using React.AspNet;

namespace React.MVC6.Sample
{
    public class Startup
    {
        // Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddReact(); // Add React to the IoC container
            services.AddMvc();
        }

        // Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app)
        {
            app.UseIISPlatformHandler();

            // Initialise ReactJS.NET. Must be before static files.
            app.UseReact(config =>
            {
                config
                    .SetReuseJavaScriptEngines(true)
                    .AddScriptWithoutTransform("~/build/server.bundle.js");
            });

            app.UseStaticFiles(new StaticFileOptions
            {
                ServeUnknownFileTypes = true
            });

            app.UseMvc(r =>
            {
                r.MapRoute(
                    name: "default",
                    template: "{controller}/{action}/{id?}",
                    defaults: new { controller = "Home", action = "Index" }
                );
            });
        }

        // Entry point for the application.
        public static void Main(string[] args) => WebApplication.Run<Startup>(args);
    }
}

 

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offer a highly redundant, carrier-class architecture, designed around the needs of shared hosting customers.



ASP.NET MVC 5 Hosting - HostForLIFE.eu :: ASP.NET MVC 5 Custom Filter

clock April 1, 2016 21:37 by author Anthony

UNDERSTANDING ASP.NET MVC

ASP.NET MVC is the implementation of the MVC architecture to the programming framework. ASP.NET physically is library consisting of some assembly that can be installed on top .NET Framework 3.5. ASP.NET MVC was created as an option for developers who like MVC architecture. ASP.NET MVC did not replace Web Forms architecture that has been known and used by developers ASP.NET. The main components of ASP.NET MVC still the same as the basic architecture of MVC, the Model, View, and Controller. Some of the additional component is a web server, Routing, and dispatchers. Web server always bridging the interaction between the user with a web program. We can use the IIS web server, or a personal web server as long as the program is still in the development phase. IIS versions that can be used vary from version 5 to version 7.

ASP.NET MVC 5 Provides five different kinds of Filters. They are :

  • Authentication
  • Authorization
  • Action
  • Result
  • Exception

Filters are used to inject logic at the different levels of request processing. Let us understand where at the various stages of request processing different filters get applied. Authentication Authorization filter runs after the filter and before any other filter or action method. Action filter runs before and after any action method. Result filter runs before and after execution of any action result. Exception filter runs only if action methods, filters or action results throw an exception.

An action filter consists of codes that run either before or after an action runs. It can be used for tasks like logging, privileged based authorization, authentication, caching etc. Creating a custom action filter is very easy. It can be created in four simple steps:

  • Create a class
  • Inherit ActionFilterAttribute class
  • Override the OnActionExecuting method to run logic before the action method
  • Override the OnActionExecuted method to run logic after the action method

The purpose of the action filter is to find whether a logged in user belongs to a particular privileges or not. On the basis of the result, a user will access a particular action or navigate to the login action. To do this, I have created a class and extended the ActionFilterAttribute class.

using PrivilegeDemo.Services;
using System.Web;
using System.Web.Mvc;
using Microsoft.AspNet.Identity;
using System.Web.Routing;
 
namespace PrivilegeDemo.Filters
{
    public class AuthorizationPrivilegeFilter : ActionFilterAttribute
    {
      
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
         
            AuthorizationService _authorizeService = new AuthorizationService();
            string userId = HttpContext.Current.User.Identity.GetUserId();
            if (userId != null)
            {
                var result = _authorizeService.CanManageUser(userId);
                if (!result)
                {
 
                    filterContext.Result = new RedirectToRouteResult(
                        new RouteValueDictionary{{ "controller", "Account" },
                                          { "action", "Login" }
 
                                         });
                }
            }
            else
            {
                filterContext.Result = new RedirectToRouteResult(
                new RouteValueDictionary{{ "controller", "Account" },
                                          { "action", "Login" }
 
                                         });
 
            }
            base.OnActionExecuting(filterContext);
        }
 
 
    }
}

 

The OnActionExecuting method is overridden because we want the code to execute before the action method gets executed. Once the action filter is created, it can be used in three ways:

  • As Global filter
  • As Controller
  • As Action

By adding a filter to the global filter in App_Start\FilterConfig it will be available globally to the entire application.

public class FilterConfig
    {
        public static void RegisterGlobalFilters(GlobalFilterCollection filters)
        {
            filters.Add(new HandleErrorAttribute());
           filters.Add(new AuthorizationPrivilegeFilter());
        }
    }

By adding a filter to a particular Controller it will also be available to the all actions of that particular controller.

[AuthorizationPrivilegeFilter]
    public class HomeController : Controller
    {

Adding a filter to a particular action it will be available to the particular action.

[AuthorizationPrivilegeFilter]
        public ActionResult About()
        {

 

 

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offer a highly redundant, carrier-class architecture, designed around the needs of shared hosting customers.



ASP.NET MVC 5 Hosting - HostForLIFE.eu :: How to Make ASP.NET MVC 5 Run in Ubuntu?

clock March 31, 2016 18:04 by author Anthony

ASP.NET is a programming framework to create web application server side. ASP.NET using C # code is well structured so it is easy to understand and repair. C # also provides a variety of code hint, hint error before the code is executed. C # is executed using JIT system, so it may be able to run faster than interpreted languages like PHP.

But until a few years ago ASP.NET can only run on windows platform. Because there are some who still is Microsoft's patents, these projects difficult to run optimally and tend to be limited compatibility, even dotGNU project to a halt in 2012. So today I will discuss about how to run ASP.NET MVC 5 on Ubuntu Linux.

Before that some things need to be prepared, such as:

  • Computers with 14:04 LTS Ubuntu operating system.
  • ASP.NET MVC 5 that has been published.
  • Internet connection.

How to Make ASP.NET MVC 5 Run in Ubuntu?

  • Make sure that your operating system has been updated by running the following command:
    sudo apt-get update && sudo apt-get dist-upgrade
  • Install apache2 package by running the command:
    sudo apt-get install apache2
  • Input Mono into the system package list, this needs to be done so that the mono version that will be installed up to date. make sure you run the code below line by line.
    sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
    sudo echo "deb http://download.mono-project.com/repo/debian wheezy main" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list
    sudo echo "deb http://download.mono-project.com/repo/debian wheezy-apache24-compat main" | sudo tee -a /etc/apt/sources.list.d/mono-xamarin.list
    sudo echo "deb http://download.mono-project.com/repo/debian alpha main" | sudo tee /etc/apt/sources.list.d/mono-xamarin-alpha.list
    sudo apt-get update && sudo apt-get dist-upgrade
  • Install mono-complete package
    sudo apt-get install mono-complete
  • Install libapache2-mod-mono package
    sudo apt-get install libapache2-mod-mono
    sudo a2enmod mod_mono_auto
  • Set apache2, so that the apache2 folder using mono. This procedure must be repeated for each new application
    sudo nano /etc/apache2/sites-available/testasp.conf
  • Copy-paste the following lines into the console, adjust the path and name if necessary. click ctrl + o, enter the ctrl + x to save the file.
    Alias /testasp "/var/www/html/testasp"
    MonoServerPath inventory "/usr/bin/mod-mono-server4"
    MonoDebug inventory true
    MonoSetEnv inventory MONO_IOMAP=all
    MonoApplications inventory "/testasp:/var/www/html/testasp"
    <Location "/testasp">
    Allow from all
    Order allow,deny
    MonoSetServerAlias inventory
    SetHandler mono
    SetOutputFilter DEFLATE
    SetEnvIfNoCase Request_URI "\.(?:gif|jpe?g|png)$" no-gzip dont-vary
    </Location>
    <IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE text/html text/plain text/xml text/javascript
    </IfModule>

  • Create a new folder in the / var / www / html / testasp, adjust permissions folder if necessary. Asp.net files will be stored here.
    sudo mkdir /var/www/html/testasp
  • Enable configuration site that have been created.
    sudo a2ensite testasp
    sudo service apache2 restart
  • Upload or copy the files you want to run ASP.NET MVC into the folder / var / www / html / testasp.
  • Test sites in the browser, adjust your url with IP engine.
  • Done. You have been successfully run ASP.NET MVC 5 on the Linux operating system.

 

HostForLIFE.eu ASP.NET MVC 5 Hosting
HostForLIFE.eu revolutionized hosting with Plesk Control Panel, a Web-based interface that provides customers with 24x7 access to their server and site configuration tools. Plesk completes requests in seconds. It is included free with each hosting account. Renowned for its comprehensive functionality - beyond other hosting control panels - and ease of use, Plesk Control Panel is available only to HostForLIFE's customers. They
offer a highly redundant, carrier-class architecture, designed around the needs of shared hosting customers.



ASP.NET MVC 6 Hosting - HostForLIFE.eu :: How to Create & Update Cookie in ASP.NET MVC?

clock March 30, 2016 23:25 by author Peter

Today, we will explain you about how to create and update cookie in ASP.NET MVC. An HTTP cookie (also called web cookie, Internet cookie, browser cookie or simply cookie), is a small piece of data sent from a website and stored in the user's web browser while the user is browsing. Every time the user loads the website, the browser sends the cookie back to the server to notify the user's previous activity. Cookies were designed to be a reliable mechanism for websites to remember stateful information (such as items added in the shopping cart in an online store) or to record the user's browsing activity (including clicking particular buttons, logging in, or recording which pages were visited in the past). Cookies can also store passwords and form content a user has previously entered, such as a credit card number or an address.

The output of the index.aspx runs over the Home Controller:
public ActionResult Index()
    {
        ViewData["Message"] = "Welcome to ASP.NET MVC!";
        string cookie = "There is no cookie!";
        if(this.ControllerContext.HttpContext.Request.Cookies.AllKeys.Contains("Cookie"))
        {
            cookie = "Yeah - Cookie: " + this.ControllerContext.HttpContext.Request.Cookies["Cookie"].Value;
        }
        ViewData["Cookie"] = cookie;
        return View();
    }

Here it is detected if a cookie exists and if yes than it will be out given.
These two Links guide you to the CookieController:
public class CookieController : Controller
{

    public ActionResult Create()
    {
        HttpCookie cookie = new HttpCookie("Cookie");
        cookie.Value = "Hello Cookie! CreatedOn: " + DateTime.Now.ToShortTimeString();

        this.ControllerContext.HttpContext.Response.Cookies.Add(cookie);
        return RedirectToAction("Index", "Home");
    }

    public ActionResult Remove()
    {
        if (this.ControllerContext.HttpContext.Request.Cookies.AllKeys.Contains("Cookie"))
        {
            HttpCookie cookie = this.ControllerContext.HttpContext.Request.Cookies["Cookie"];
            cookie.Expires = DateTime.Now.AddDays(-1);
            this.ControllerContext.HttpContext.Response.Cookies.Add(cookie);
        }
        return RedirectToAction("Index", "Home");
    }

}


With the create method it´s quite simple to create a Cookie and lay it down into the response and afterwards it turns back to the Index View.

The remove method controls if a cookie exists and if the answer is positive the Cookie will be deleted directly.

Beware while deleting cookies:
This way to delete a cookie doesn´t work:
this.ControllerContext.HttpContext.Response.Cookies.Clear();


The cookie has to go back to the remove (like it is given in the Cookie Controller) and an expiry date should be given. I´m going to set it on yesterday so the browser has to refuse it directly.

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ASP.NET MVC 5 Hosting - HostForLIFE.eu :: How to Create ASP.NET MVC 5 Page

clock March 29, 2016 18:31 by author Anthony

Here we will give an example of how to create ASP.NET MVC 5 page with examples, they can be seen on ASP.NET MVC framework to be displayed on the web browser. We are going on to describe some things about the basics of ASP.NET MVC that should be known.

You need to know what is included on the MVC Pattern Architectural Pattern. And software design pattern that is used in ASP.NET MVC is Front Controller, which means that the control will be concentrated in a class alone. While ASP.NET Web Forms is different because it has a controller on each page.

Here's how the MVC, can be seen in the following figure

 

In ASP.NET MVC 5, the address will be written in the address bar on your web browser does not show as physical files, because of the configuration and routing processes that can be seen in Global.asax.cs and RouteConfig.cs file (folder App_start).

Global.asax file can also be found on the project ASP.NET Web Forms, this file serves as an application file that is responsible for the events at the application level is raised by ASP.NET or HttpModules. At the time the application is run, namely on Application_Start method, can be seen there are file event handling. Then it can be seen on these methods belong to the class RouteConfig. Here is the content of the class RouteConfig residing on file in the folder App_Start RouteConfig.cs.

It can be seen that the name of the default controller is used in this application is Home. This means that if you follow the code needs to be created with the name of the Home controller class, and then save it in a folder Controllers.

To add this class please right click on the folder and select Add Controller > Controller

Select the MVC Controller 5 - Empty and then click the Add button.

It will display a window Add Controller that serves to give the name of the controller class that will be created. For example, assign a name to the Home Controller Controller name column, then click the Add button.

Here is the content of the class controller of HomeController that have been made :

Then make special view for HomeController class in Home folder with index.cshtml. Then right click on the Home folder, then choose Add > New Item. After that, Choose MVC 5 View Page, give a name as you desire, click Add button.

Then you can modify Index.cshtml file like this :

You can try it on your web browser, then this will be the result

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ASP.NET MVC 6 Hosting - HostForLIFE.eu :: How To Use C# To Send Emails with Mail Helper

clock February 27, 2016 00:28 by author Rebecca

In this post, I will create simple mail helper class for sending emails in ASP.NET MVC using C#.

IMPLEMENTATION

Step 1

Create a class name MailHelper and the add the following code:

public class MailHelper
    {
        private const int Timeout = 180000;
        private readonly string _host;
        private readonly int _port;
        private readonly string _user;
        private readonly string _pass;
        private readonly bool _ssl;

        public string Sender { get; set; }
        public string Recipient { get; set; }
        public string RecipientCC { get; set; }
        public string Subject { get; set; }
        public string Body { get; set; }
        public string AttachmentFile { get; set; }

        public MailHelper()
        {
            //MailServer - Represents the SMTP Server
            _host = ConfigurationManager.AppSettings["MailServer"];
            //Port- Represents the port number
            _port = int.Parse(ConfigurationManager.AppSettings["Port"]);
            //MailAuthUser and MailAuthPass - Used for Authentication for sending email
            _user = ConfigurationManager.AppSettings["MailAuthUser"];
            _pass = ConfigurationManager.AppSettings["MailAuthPass"];
            _ssl = Convert.ToBoolean(ConfigurationManager.AppSettings["EnableSSL"]);
        }

        public void Send()
        {
            try
            {

// We do not catch the error here... let it pass direct to the caller
                Attachment att = null;
                var message = new MailMessage(Sender, Recipient, Subject, Body) { IsBodyHtml = true };
                if (RecipientCC != null)
                {
                    message.Bcc.Add(RecipientCC);
                }
                var smtp = new SmtpClient(_host, _port);

                if (!String.IsNullOrEmpty(AttachmentFile))
                {
                    if (File.Exists(AttachmentFile))
                    {
                        att = new Attachment(AttachmentFile);
                        message.Attachments.Add(att);
                    }
                }

                if (_user.Length > 0 && _pass.Length > 0)
                {
                    smtp.UseDefaultCredentials = false;
                    smtp.Credentials = new NetworkCredential(_user, _pass);
                    smtp.EnableSsl = _ssl;
                }

                smtp.Send(message);

                if (att != null)
                    att.Dispose();
                message.Dispose();
                smtp.Dispose();
            }

            catch (Exception ex)
            {
            }
        }
    }

Step 2

Place the following code in the app settings of your application:

appSettings>
<add key=”MailServer” value=”smtp.gmail.com”/>
<add key=”Port” value=”587″/>
<add key=”EnableSSL” value=”true”/>
<add key=”EmailFromAddress” value=”[email protected]”/>
<add key=”MailAuthUser” value=”[email protected]”/>
<add key=”MailAuthPass” value=”xxxxxxxx”/>
</appSettings>

Step 3

If you don’t have authentication for sending emails you can pass the emtpy string in MailAuthUser and MailAuthPass.

<appSettings>
<add key=”MailServer” value=”smtp.gmail.com”/>
<add key=”Port” value=”587″/>
<add key=”EnableSSL” value=”true”/>
<add key=”EmailFromAddress” value=”[email protected]”/>
<add key=”MailAuthUser” value=””/>
<add key=”MailAuthPass” value=””/>
</appSettings>

USAGE

Add the following code snippet in your controller to call Mail Helper class for sending emails:

var MailHelper = new MailHelper
   {
      Sender = sender, //email.Sender,
      Recipient = useremail,
      RecipientCC = null,
      Subject = emailSubject,
      Body = messageBody
   };
 MailHelper.Send();

HostForLIFE.eu ASP.NET MVC 6 Hosting
HostForLIFE.eu is European Windows Hosting Provider which focuses on Windows Platform only. We deliver on-demand hosting solutions including Shared hosting, Reseller Hosting, Cloud Hosting, Dedicated Servers, and IT as a Service for companies of all sizes. We have customers from around the globe, spread across every continent. We serve the hosting needs of the business and professional, government and nonprofit, entertainment and personal use market segments.



ASP.NET MVC 6 Hosting - HostForLIFE.eu :: How To Perform CSV Files (Upload & Read) in ASP.NET MVC

clock February 20, 2016 00:39 by author Rebecca

To read CSV file doesn’t mean to use String.Split(). CSV files may contain commas, carriage returns, speechmarks…etc within strings. In this post, we will learn how to upload and read CSV File in ASP.NET MVC WITHOUT using Jet/ACE OLEDB provider. It is helpful when you have to deploy your code on shared hosting, Azure website or any server where ACE Database engine is not available. In this post, we will use a fast CSV Reader.

Step 1

Create ASP.NET MVC Empty Project

Step 2

To install CSVReader, run the following command in the Package Manager Console:

Install-Package LumenWorksCsvReader

Step 3

Add New Controller say HomeController and add following action:

public ActionResult Upload()
       {
           return View();
       }

Step 4

Add View of Upload action and use following code:

@model System.Data.DataTable
@using System.Data;
 
<h2>Upload File</h2>
 
@using (Html.BeginForm("Upload", "Home", null, FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    @Html.AntiForgeryToken()   
    @Html.ValidationSummary()
    
    <div class="form-group">
        <input type="file" id="dataFile" name="upload" />
    </div>
    
    <div class="form-group">
        <input type="submit" value="Upload" class="btn btn-default" />
    </div>
    
    if (Model != null)
    {
        <table>
            <thead>
                <tr>
                    @foreach (DataColumn col in Model.Columns)
                    {        
                        <th>@col.ColumnName</th>
                    }
                </tr>
            </thead>
            <tbody>
                @foreach (DataRow row in Model.Rows)
                {       
                    <tr>
                        @foreach (DataColumn col in Model.Columns)
                        {            
                            <td>@row[col.ColumnName]</td>
                        }
                    </tr>
                }
            </tbody>
        </table>
    }
}

We will read CSV file, get data in DataTable and show DataTable in View.

Step 5

Here's how to read submitted CSV file:

[HttpPost]
[ValidateAntiForgeryToken]
 public ActionResult Upload(HttpPostedFileBase upload)
{
    if (ModelState.IsValid)
    {
 
        if (upload != null && upload.ContentLength > 0)
        {                  
 
            if (upload.FileName.EndsWith(".csv"))
            {
                Stream stream = upload.InputStream;
                DataTable csvTable = new DataTable();
                using (CsvReader csvReader =
                    new CsvReader(new StreamReader(stream), true))
                {
                    csvTable.Load(csvReader);
                }
                return View(csvTable);
            }
            else
            {
                ModelState.AddModelError("File", "This file format is not supported");
                return View();
            }
        }
        else
        {
            ModelState.AddModelError("File", "Please Upload Your file");
        }
    }
    return View();
}

It is assumed the file will have column names in first row.

Output

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HostForLIFE.eu is European Windows Hosting Provider which focuses on Windows Platform only. We deliver on-demand hosting solutions including Shared hosting, Reseller Hosting, Cloud Hosting, Dedicated Servers, and IT as a Service for companies of all sizes. We have customers from around the globe, spread across every continent. We serve the hosting needs of the business and professional, government and nonprofit, entertainment and personal use market segments.



ASP.NET MVC 6 Hosting - HostForLIFE.eu :: How to Connect an MVC Project to an SQL database?

clock February 18, 2016 19:59 by author Peter

I'm simply getting to grips with MVC linq etc and came across what sounds like a standard stumbling block. All the tutorials are either Code first examples or they create the information from scratch within the App_Data directory. All well and smart for a tutorial that require to be simply moveable to the readers computer, however not very useful when putting in a full scale MVC application. My first problem was my lack of knowledge of Linq to SQL. Finally, how to add an external SQL database to your MVC project:

  • Right click on "Models" folder, choose "Add New Item"
  • Add a "Link to SQL Classes" item
  • Open your "Server Explorer" pane (if you cant see it attempt "View" on the menu bar and "Server Explorer"
  • Right click on "Data Connections" and choose "Add Connection"
  • Follow the instructions.
  • almost there....
  • Expand your newly added database to look at the tables.
  • Drag the tables you wish over to the main pane of the "Link to SQL Classes" item you added at the start.
  • Hey presto, you have a database context you'll run Linq queries against.

Please bear in mind you will need to use the "Models" namespace to reference you database context objects.
And now back to highly sophisticated programming!

HostForLIFE.eu ASP.NET MVC 6 Hosting
HostForLIFE.eu is European Windows Hosting Provider which focuses on Windows Platform only. We deliver on-demand hosting solutions including Shared hosting, Reseller Hosting, Cloud Hosting, Dedicated Servers, and IT as a Service for companies of all sizes. We have customers from around the globe, spread across every continent. We serve the hosting needs of the business and professional, government and nonprofit, entertainment and personal use market segments.



ASP.NET MVC 6 Hosting - HostForLIFE.eu :: How To Use ASP.NET MVC To Increase Website Performance

clock February 12, 2016 23:50 by author Rebecca

In this tutorial, we will discuss about how you can increase the performance of website using ASP.NET MVC.

1. Remove Unused view engines

protected void Application_Start()
{
    ViewEngines.Engines.Clear();
    ViewEngines.Engines.Add(new RazorViewEngine());
}

2. Deploying Production Code in Release Mode

Make sure your production application always runs in release mode in the web.config
<compilation debug=”false”></compilation>

<configuration> <system.web> <deployment retail=”true”></deployment> </system.web> </configuration>

3. Use OutputCacheAttribute When Appropriate

MVC will not do any View Look-up Caching if you are running your application in Debug Mode

[OutputCache(VaryByParam = "none", Duration = 3600)]
public ActionResult Categories()
{
    return View(new Categories());
}

4. Use HTTP Compression

Add gzip (HTTP compression) and static cache (images, css, …) in your web.config:

<system.webserver><urlcompression dodynamiccompression=”true” dostaticcompression=”true” dynamiccompressionbeforecache=”true”></urlcompression>
</system.webserver>

5. Add an Expires or a Cache-Control Header

<configuration><system.webServer>
<staticContent>
<clientCache cacheControlMode=”UseExpires”
httpExpires=”Mon, 06 May 2013 00:00:00 GMT” />
</staticContent>
</system.webServer>
</configuration>

6. Uncontrolled Actions

protected override void HandleUnknownAction(string actionName)
{
       RedirectToAction("Index").ExecuteResult(this.ControllerContext);
}

7. Other Ways

  • Avoid passing null models to views
  • Remove unused HTTP Modules
  • Put repetitive code inside your PartialViews
  • Put Stylesheets at the Top
  • Put Scripts at the Bottom
  • Make JavaScript and CSS External
  • Minify JavaScript and CSS
  • Remove Duplicate Scripts
  • No 404s
  • Avoid Empty Image src
  • Use a Content Delivery Network
  • Use either Microsoft, Google CDN for referencing the Javascript or Css libraries
  • Use GET for AJAX Requests
  • Optimize Images

HostForLIFE.eu ASP.NET MVC 6 Hosting
HostForLIFE.eu is European Windows Hosting Provider which focuses on Windows Platform only. We deliver on-demand hosting solutions including Shared hosting, Reseller Hosting, Cloud Hosting, Dedicated Servers, and IT as a Service for companies of all sizes. We have customers from around the globe, spread across every continent. We serve the hosting needs of the business and professional, government and nonprofit, entertainment and personal use market segments.



ASP.NET MVC 6 Hosting - HostForLIFE.eu :: Restricting HTTP Methods in ASP.NET MVC

clock February 11, 2016 20:21 by author Peter

HTTP methods are not often thought about once writing ASP.NET webforms applications. Links are GETs, buttons are POSTs and it all happens automatically. With Asp.NET MVC, and other MVC frameworks like Rails, the http method used is more obvious and developers are begining to care about which they use.

The problem is that GET requests tell visitors to your site, together with search engines, client-side web optimizers and other automatic tools, that it's safe to make the request. Which is a problem if your checkout button causes a GET. To quote Dave Thomas, paraphrasing Tim Berners-Lee, "Use GET requests to retrieve info from the server, and use POST requests to request a change of state on the server".

To help me correctly control which HTTP methods are used to access my controller actions I created an ActionFilterAttribute. ActionFilters provide a declarative way to access the executing context immediately prior to, and immediately following, the execution of an action. they're an excellent way to introduce aspect oriented programming to an asp.net mvc application. To use my action filter you attribute a controller action like this:
AllowedHttpMethods(AllowedMethods= new HttpMethods[] {HttpMethods.POST})]
public void Save()
{ ... }

The code for the Action Filter inherits from ActionFilterAttribute and overrides the OnActionExecuting event.
public class AllowedHttpMethodsAttribute : ActionFilterAttribute
    {
        public HttpMethods[] AllowedMethods { get; set; }

        public override void OnActionExecuting(FilterExecutingContext filterContext)
        {
            int count = AllowedMethods.Count(m => m.ToString().Equals(filterContext.HttpContext.Request.HttpMethod));
            if (count == 0) throw new Exception("Invalid http method: " + filterContext.HttpContext.Request.HttpMethod);
        }
    }

    public enum HttpMethods
    {
        GET,POST
    }


By adding the AllowedHttpMethods attribute to all of my controller actions I can assure that http methods are used correctly.

HostForLIFE.eu ASP.NET MVC 6 Hosting
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About HostForLIFE

HostForLIFE is European Windows Hosting Provider which focuses on Windows Platform only. We deliver on-demand hosting solutions including Shared hosting, Reseller Hosting, Cloud Hosting, Dedicated Servers, and IT as a Service for companies of all sizes.

We have offered the latest Windows 2019 Hosting, ASP.NET 5 Hosting, ASP.NET MVC 6 Hosting and SQL 2019 Hosting.


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