Ehsan Ghanbari

Experience, DotNet, Solutions

Syntaxhighlighter plugin in CKEditor

 There are lots of plugins for CKEditor and one of the most used plugin for the developers is SyntaxHighlighter. In order to get and install this nice one with a sexy them like the following picture:

Get the latest version from the website and copy the content of the plugin into the plugin folder. Note that you should get the requirement plugin of every plugin in CKEditor of course, you will see the following popup modal after clicking the download button:

And the Dialog plugin needs Dialog User Interface as well. So after getting all three plugins and putting in the plugin folder. You just need to define the plugin like below:

<textarea id="js-my-textarea"></textarea>

<script type="text/javascript">

    CKEDITOR.replace('js-my-textarea', {

        "extraPlugins": 'syntaxhighlight'




If you run your application you will see the plugin, you just need to copy and paste your code and select the language. That's all!



But you don't have that sexy highlighter yet! You need to add some CSS and JS code wherever your final body would be rendered. You have to get those extra files from highlighter web site. Get the latest version, after extracting you will see Scripts and Styles folder:



Some files are needed to be referenced like XRegExp.js, shCore.js, shCore.css, shThemeDefault.css :


    <script src="~/Content/syntaxhighlighter/scripts/XRegExp.js"></script>
    <script src="~/Content/syntaxhighlighter/scripts/shCore.js"></script>

    <script src="~/Content/syntaxhighlighter/scripts/shBrushCSharp.js"></script>
    <script src="~/Content/syntaxhighlighter/scripts/shBrushCss.js"></script>
    <script src="~/Content/syntaxhighlighter/scripts/shBrushJava.js"></script>
    <script src="~/Content/syntaxhighlighter/scripts/shBrushJScript.js"></script>
    <script src="~/Content/syntaxhighlighter/scripts/shBrushPython.js"></script>
    <script src="~/Content/syntaxhighlighter/scripts/shBrushRuby.js"></script>
    <script src="~/Content/syntaxhighlighter/scripts/shBrushSql.js"></script>
    <script src="~/Content/syntaxhighlighter/scripts/shBrushXml.js"></script>

    <link href="~/Content/syntaxhighlighter/styles/shCore.css" rel="stylesheet" />
    <link href="~/Content/syntaxhighlighter/styles/shThemeDefault.css" rel="stylesheet" />
    <script type="text/javascript">SyntaxHighlighter.all();</script>

Then you can reference all the language you want to highlight. By the way, you can find some other template rather than the default (shThemeDefault.css) in the same folder. 

Image browse plugin in CKEditor

I was recently integrating my blog with CKEditor Image Browser plugin and it was interesting to me, It was cool! in order to add Image Browser plugin to your CKEditor you should get the file from the mentioned link and put it in your plugins folder inside CKEditor. Then you should go to the config.js file of CKEditor and add the target plugin:

CKEDITOR.editorConfig = function( config ) {

// Define changes to default configuration here. For example:

// config.language = 'fr';

// config.uiColor = '#AADC6E';

    config.extraPlugins = 'imagebrowser';

    config.extraPlugins = 'prism';

    config.extraPlugins = 'codesnippet';

    config.extraPlugins = 'widget';

    config.extraPlugins = 'dialog';


Now before browsing, if you run your application, you would see the image properties with  Browse server button:



Now you should tell the plugin that where your images should be getting, imageBrowser_listUrl is the URL which should return a JSON file:

 <textarea id="my-textarea-id"></textarea>

 <script type="text/javascript">

    CKEDITOR.replace('js-my-textarea', {

        "extraPlugins": 'imagebrowser',

        "imageBrowser_listUrl": "/Administrator/File/BrowseImages"



As I've written my blog with MVC4, I used HTML helper instead of <textarea> tag:

     @Html.TextAreaFor(blog => blog.Body, new { @id = "js-my-textarea", @class = "ckeditor" })

Image browser in CKEditor needs the JSON result in a format like this:



                "image": "/image1.jpg",

                "thumb": "/image1_thumb.jpg"



                "image": "/image2_.jpg",

                "thumb": "/image2_thumb.jpg"                



To create a JSON file like this in MVC, make JsonResult with the same output:

 public JsonResult BrowseImages()


            var imageBrowser = new List<ImageBrowserViewModel>();

            var path="/Images/"

            var images = Directory.GetFiles(Server.MapPath(path)).OrderByDescending(d => new FileInfo(d).CreationTime);

            foreach (var image in images)


                imageBrowser.Add(new ImageBrowserViewModel


                    image = string.Format(finalPath + Path.GetFileName(image)),

                    thumb = string.Format(finalPath + "Thumb/" + Path.GetFileName(image)),



            return Json(imageBrowser, JsonRequestBehavior.AllowGet);


And the ImageBrowserViewModel is just a ViewModel to initiate the output:

 public class ImageBrowserViewModel


        public string image { get; set; }


        public string thumb { get; set; }


As you can see in my code and also based on the required JSON output, I save the thumb of my images to show them in image browser to pick. Now you can see the output of your plugin in your editor:


About Me

Ehsan Ghanbari

Hi! my name is Ehsan. I'm a developer, passionate technologist, and fan of clean code. I'm interested in enterprise and large-scale applications architecture and design patterns. I spend a lot of time on software architecture. Since 2008, I've been as a developer for different companies and organizations and I've been focusing on Microsoft ecosystem all the time. During the past years, Read More

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