Working with Images in ASP.Net MVC Framework

Dhananjay Kumar
15y
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Article

Objective

Objective of this aricle is to show, how to work with Images in ASP.Net MVC application. This article will explain, how to display images from Xml file and how to add images in Xml resourece.

The Final Output would be something like below.

Creating the Resource folder for Image

Create a ASP.Net MVC application, by New->Project->Web->ASP.Net MVC Application.

Now add a folder in application and give it name as Images.

Add few images in Images folder. For that right click on Image folder and add existing items.

After adding Images in Images folder. Folder will look like below.

Add an XML file in Image directory as source of the images. Give any name, here name is ImageMetaData.xml. To add XML file in Images directory, right click on directory and add XML File as shown below.

Create XML elements for images. Here filename and description are xml elements. Give value according to name of your added images. For my Images the xml file is as below.

<?xml version="1.0" encoding="utf-8" ?>
<images>
<image>
    <filename>anthonyrobins.jpg</filename>
    <description>Anthony Robbins</description>
</image>
<image>
    <filename>chetanbhagat.jpg</filename>
    <description>Chetan Bhagat</description>
</image>
<image>
    <filename>deepak.jpg</filename>
    <description>Deepak Chopra</description>
</image>
<image>
    <filename>robinsharma.jpg</filename>
    <description>Robin Sharama</description>
</image>
<image>
    <filename>stevenkovey.jpg</filename>
    <description>Steven Covey</description>
</image>
<image>
    <filename>taslima.jpg</filename>
    <description>Taslima Nasrren</description>
</image>
<image>
    <filename>vikarm.jpg</filename>
    <description>Vikram Seth</description>
</image>
</images>

Displaying Images

Creating the Model

Right click on Model folder and add new class. Give name of the class as Image.

Type the below code inside the Image class. This class is acting as a business class. This class got two properties . One for Path of the image and other for Description of the image.

Image.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace ImageViewer.Models
{
public class Image
{

        public Image(string path, string desc)
        {
            Path = path;
            Description = desc;

        }
        public string Path { get; set; }
        public string Description { get; set;}
    }
}

We need to fetch data from the disk. For this, we will add one more model class and in constructor of that class, we will fetch all the images from xml file. So add one class in Model folder as shown in step above. Give name ImageModel.

ImageModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Xml.Linq;

namespace ImageViewer.Models
{
    public class ImageModel:List<Image>
    {
        public ImageModel()
        {
            string directoryOfImage = HttpContext.Current.Server.MapPath("~/Images/");
            XDocument imageData = XDocument.Load(directoryOfImage + @"/ImageMetaData.xml");
            var images = from image in imageData.Descendants("image") select new Image(image.Element("filename").Value, image.Element("description").Value);
            this.AddRange(images.ToList<Image>());
       }
    }
}

Creating the Controller

Right Click on Controller and add a controller called ImageController.

Type or paste below code inside ImageController class. This class got an action, which is returning View with instance of ImageModel in View dictionary.

Controller\ImageController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Xml.Linq;

namespace ImageViewer.Models
{
    public class ImageModel:List<Image>
    {
        public ImageModel()
        {
            string directoryOfImage = HttpContext.Current.Server.MapPath("~/Images/");
            XDocument imageData = XDocument.Load(directoryOfImage + @"/ImageMetaData.xml");
            var images = from image in imageData.Descendants("image") select new Image(image.Element("filename").Value, image.Element("description").Value);
            this.AddRange(images.ToList<Image>());
       }
    }
}

Creating the View

Right click on View folder and add new View. Name of the View must be Index because controller name is here Index.

Again right click on Image Folder in View and add a class. Give name of the class as Index.cs.

Make this class as a partial class.

Add reference

using ImageViewer.Models;

Inherit ViewPage<> in this partial class.

Pass model class as parameter of ViewPage<ImageModel>

View/Image/Index.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using ImageViewer.Models;

namespace ImageViewer.Views.Image|
{
    public partial class Index : ViewPage<ImageModel>
    {
    }
}
Open index.aspx
Set code behind file as

CodeBehind="~/Views/Image/Index.cs"
Here we will fetch all the images from ViewData dictionary.

View/Image/Index.aspx

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="ImageViewer.Views.Image.Index" CodeBehind="~/Views/Image/Index.cs" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
            Index
</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
   <% foreach (var image in ViewData.Model) { %>
   <span class="image">
        <a href="images/<%= image.Path %>">
        <img src="images/<%= image.Path %>" height="100" width="100" /></a>
        <span class="description"><%= image.Description %></span>
   </span>
<% }%>

</asp:Content>

Adding Link to navigate Image from Home page

Click on View/Shared/site.Master

Add below Action Link

<li><%=Html.ActionLink("Images","Index","Image") %></li>

So, now three action links would be there in master page

                <ul id="menu">
                    <li><%= Html.ActionLink("Home", "Index", "Home")%></li>
                    <li><%= Html.ActionLink("About", "About", "Home")%></li>
                    <li><%=Html.ActionLink("Images","Index","Image") %></li>
                  </ul>

Press F5 to run with debugging

Click on Image tab to get Images.

Adding Image

Amending the Model

Go to ImageModel class and add below method, which will add image in Images folder and its entry in XML file.

public void Add(Image image, HttpPostedFileBase filebase)
        {
            string imagerep = HttpContext.Current.Server.MapPath("~/Images/");
            filebase.SaveAs(imagerep + image.Path);
            this.Add(image);
            XElement xml = new XElement("images", from i in this
                                                  orderby image.Path
                                                  select new XElement("image",
                                                      new XElement("filename", i.Path),
                                                      new XElement("description", i.Description))
                                                     );
            XDocument doc = new XDocument(xml);
            doc.Save(imagerep + "/ImageMetaData.xml");

        }

So, now the ImageModel class is been modified to

Models\ImageModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Xml.Linq;

        public void Add(Image image, HttpPostedFileBase filebase)
        {
            string imagerep = HttpContext.Current.Server.MapPath("~/Images/");
            filebase.SaveAs(imagerep + image.Path);
            this.Add(image);
            XElement xml = new XElement("images", from i in this
                                                  orderby image.Path
                                                  select new XElement("image",
                                                      new XElement("filename", i.Path),
                                                      new XElement("description", i.Description))
                                                     );
            XDocument doc = new XDocument(xml);
            doc.Save(imagerep + "/ImageMetaData.xml");

}
}
}

Amending the Controller

In ImageController add actions which will perform task of adding the image into the resource. For that add below actions called Add and Save in Image Controller.

So, now Image Controller would look like below. Both Add and Save actions are highlighted in different colors.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Ajax;
using ImageViewer.Models;

namespace ImageViewer.Controllers
{
    public class ImageController : Controller
    {
        //
        // GET: /Image/

        public ActionResult Index()
        {
           return View(new ImageModel());

         }

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

        [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult Save()
        {
            foreach (string name in Request.Files)
            {
                var file = Request.Files[name];

                string fileName = System.IO.Path.GetFileName(file.FileName);
                Image image = new Image(fileName, Request["description"]);

                ImageModel model = new ImageModel();
                model.Add(image, file);
            }
            return RedirectToAction("index");
        }

}

}

Creating the View

Right click on View folder and add new View. Name of the View must be Index because controller name is here Add.

Again right click on Image Folder in View and add a class. Give name of the class as Add.cs.

Make this class as a partial class.

Add reference

using ImageViewer.Models;

Inherit ViewPage<> in this partial class.

Pass model class as parameter of ViewPage<ImageModel>

View/Image/Add.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using ImageViewer.Models;

namespace ImageViewer.Views.Image
{
    public partial class Add: ViewPage<ImageModel>
    {
    }
}
Open Add.aspx
Set code behind file as

CodeBehind="~/Views/Image/Add.cs"
Type the below code in Add.aspx

View/Image/Add.aspx

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" CodeBehind="~/Views/Image/Add.cs" %>

<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" runat="server">
            Add
            <form method="post" action="<%=Url.Action("Save") %>" enctype="multipart/form-data">
    <input type="file" name="file" />
    <input type="submit" value="submit" /> <br />
    <input type="text" name="description" />
</form>
</asp:Content>

Amending Views\Index.aspx

Add below ActionLink in index.aspx.

<p><%= Html.ActionLink("Add your own image", "Add", "Image")%></p>

So, Now modified Index.aspx will look like below,

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="ImageViewer.Views.Image.Index"
CodeBehind="~/Views/Image/Index.cs" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
            Index

</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
   <% foreach (var image in ViewData.Model) { %>
   <span class="image">
        <a href="images/<%= image.Path %>">
        <img src="images/<%= image.Path %>" height="100" width="100" /></a>
        <span class="description"><%= image.Description %></span>
        </span>
<% }%>
    <p><%= Html.ActionLink("Add your own image", "Add", "Image")%></p>
</asp:Content>

Press F5 to run the application

Click on Add your own image to add new Image. Browse the Image, give a description and click on submit button.