Archive for December, 2012

Author: Tobias Zimmergren | | @zimmergren


In one of my previous posts I talked about "Using the SPField.JSLink property to change the way your field is rendered in SharePoint 2013". That article talks about how we can set the JSLink property in our SharePoint solutions and how we easily can change the rendering of a field in any list view.

It’s pretty slick and I’ve already had one client make use of the functionality in their pilot SharePoint 2013 farm. However I got a comment from John Lui asking about what the performance would be like when executing the same iterative code over thousands of items. Since I hadn’t done any real tests with this myself, I thought it’d be a good time to try and pinpoint and measure if the client-side load times differ while using the JSLink property.


The tests will be performed WITH the JSLink property set and then all tests will be executed WITHOUT the JSLink property set.

I’ve set up my scenario with various views on the same list. The total item count of the list is 5000 items, but we’ll base our tests on the limit of our views:

Test 1  
View Limit 100
Test 2  
View Limit 500

The results will be output with a difference between using the JSLink property and not using it. Should be fun.


I’be been using these tools for measuring the performance on the client:

Fiddler4, YSlow, IE Developer Tools

The code that will be executed will be the same JavaScript code as I had in my previous article.

SharePoint 2013 browser compatibility

If you intend to measure performance on various browsers, make sure you’ve pinned down what browsers are actually supported by SharePoint 2013. The following versions of browsers are supported:

  • IE 10, IE 9, IE 8
  • Chrome
  • Safari
  • Firefox

Let’s start measuring

Let’s start by taking a look at how I’ve done my tests and what the results were.

Testing methods

Each test was executed 100 times and the loading time result I’ve used for each test is the average of the 100 attempts. These tests are executed in a virtual environments so obviously the exact timings will differ from your environments – what’s mostly interesting right here though is the relative difference between having JSLink set and not set when rendering a list view, so that’s what we’ll focus on.

I’ve performed these tests on IE 10 and the latest version of Firefox. Since older browsers may handle scripts in a less efficient way than these two versions of the browsers, you may experience different results when using for example IE 8.

Results overview

SharePoint 2013 is pretty darn fantastic in its way that it renders the contents and pages. The measurements I’ve done here are based on the entire page and all contents to load. The chrome of the page (Navigation/Headers etc) loads instantly, literally in less than 25ms but the entire page takes longer since the content rendered for the list view will take considerably longer. Here’s the output…

Using 100 Item Limit in the View


Difference: 969 milliseconds


There’s not really much to argue about with the default 100-item limit. There’s a difference on almost one second, which is pretty bad to be honest. I would definitely revise these scripts and optimize the performance if I wanted quicker load times. However, if I changed the scripts and removed the rendering of images and used plain text instead, there was very little difference. So I guess it comes down to what you actually put into those scripts and how you optimize your JavaScript.

Using 500 Item Limit in the View


Difference: 529 milliseconds


The load times are naturally longer when returning 500 items, but the difference was smaller on a larger result set. I also performed the same tests using 1000 item limit in the view, and the difference per page load was between 500ms to 1000ms, essentially the same as these two tests. If your page takes 7-8 seconds to load without the usage of JS Link like these samples did in the virtual environments, I’d probably focus on fixing that before being too concerned about the impact the JS Link rendering process will have on your page. However, be advised that if you put more advanced logic into the scripts it may very well be worth your while to draft up some tests for it.

Things to take into consideration

  • The sample script here only replaces some strings based on the context object and replaces with an image. No heavy operations.
  • Replacing strings with images took a considerably longer time to render than just replacing text and render. Consider the code you put in your script and make sure you’ve optimized it for performance and scope your variables properly and so on.
  • Take your time to learn proper JavaScript practices. It’ll be worth it in the end if you’re going to do a lot of client side rendering stuff down the road.
  • If you’ve got access to Scot Hillier’s session from SPC12, review them!


Its not very often I’ve seen anyone use 1000 items as the item limit per view in an ordinary List View Web Part. Most of my existing configurations are using 100 or less (most likely around 30) items per page for optimal performance – however should you have larger views you should of course consider the impact the rendering will have if you decide to hook up your own custom client side rendering awesomeness.

You’ll notice the biggest difference between page load times if you’ve got a smaller item row limit in your view, simply because it looks like using the custom JS link property adds between 500 – 1000 milliseconds whether if I’m returning 100 items, 500 items or 2500 items in my view. Worth considering.

With that said – It’s a pretty cool feature and I’ve already seen a lot of more use cases for some of my clients to utilize these types of customizations. It’s a SUPER-AWESOME way to customize the way your list renders data instead of converting your List View Web Part (or Xslt List View Web Parts and so on) into Data View Web Parts like some people did with SharePoint Destroyer.. Err.. SharePoint Designer. For me as a developer/it/farm admin guy this will make upgrades easier as well (hopefully) as the list itself will be less customized, and only load an external script in order to make the customizations appear. Obviously I’m hoping for all scripts to end up in your code repositories with revision history, fully documented and so on – but then again I do like to dream :-)


SP 2013: Searching in SharePoint 2013 using the REST new API’s

December 26th, 2012 by Tobias Zimmergren

Author: Tobias Zimmergren | | @zimmergren


Search has always been a great way to create custom solutions that aggregate and finds information in SharePoint. With SharePoint 2013, the search capabilities are heavily invested in and we see a lot of new ways to perform our searches. In this post I’ll show a simple example of how you can utilize the REST Search API’s in SharePoint 2013 to perform a search.

REST Search in SharePoint 2013

So in order to get started, we’ll need to have an ASPX Page containing some simple markup and a javascript file where we’ll put our functions to be executed. The approach mentioned in this post is also compatible with SharePoint Apps, should you decide to develop an App that relys on Search. In my example I’ve created a custom Page which loads my jQuery and JavaScript files, and I’m deploying those files using a Module to the SiteAssets library.

Preview of the simple solution


Creating a Search Application using REST Search Api’s

Let’s examine how you can construct your search queries using REST formatting and by simply changing the URL to take in the proper query strings.

Formatting the Url

By formatting the Url properly you can retrieve search results pretty easily using REST.

Query with querytext

If you simply want to return all results with no limits or filters from a search, shoot out this formatted url:’Awesome’

will yield the following result:


Essentially we’re getting a bunch of XML returned from the query which we then have to parse and handle somehow. We can then use the result of this query in our application in whatever fashion we want. Let’s see what a very simple application could look like, utilizing the SharePoint 2013 rest search api’s.

ASP.NET Markup Snippet

As we can see in the following code snippet, we’re simply loading a few jQuery and JavaScript files that we require and we define a Search Box and a Button for controlling our little Search application.

<!-- Load jQuery 1.8.3 -->
<script type="text/javascript" src="/SiteAssets/ScriptArtifacts/jquery-1.8.3.min.js"></script>

<!-- Load our custom Rest Search script file -->
<script type="text/javascript" src="/SiteAssets/ScriptArtifacts/RestSearch.js"></script>

<!-- Add a Text Box to use as a search box -->
<input type="text" value="Awesome" id="searchBox" />

<!-- Add a button that will execute the search -->
<input type="button" value="Search" onclick="executeSearch()" />

<div id="searchResults"></div>

JavaScript logic (RestSearch.js)

I’ve added a file to the project called RestSearch.js, which is a custom javascript file containing the following code which will perform an ajax request to SharePoint using the Search API’s:

// in reality we should put this inside our own namespace, but this is just a sample.
var context;
var web;
var user;

// Called from the ASPX Page
function executeSearch()
    var query = $("#searchBox").val();

    SPSearchResults =
        element: '',
        url: '',

        init: function(element) 
            SPSearchResults.element = element;
            SPSearchResults.url = _spPageContextInfo.webAbsoluteUrl + "/_api/search/query?querytext='" + query + "'";

        load: function() 
                    url: SPSearchResults.url,
                    method: "GET",
                            "accept": "application/json;odata=verbose",
                    success: SPSearchResults.onSuccess,
                    error: SPSearchResults.onError

        onSuccess: function (data)
            var results = data.d.query.PrimaryQueryResult.RelevantResults.Table.Rows.results;

            var html = "<div class='results'>";
            for (var i = 0; i < results.length; i++)
                var d = new Date(results[i].Cells.results[8].Value);
                var currentDate = d.getFullYear() + "-" + d.getMonth() + "-" + d.getDate() + " " + d.getHours() + ":" + d.getMinutes();

                html += "<div class='result-row' style='padding-bottom:5px; border-bottom: 1px solid #c0c0c0;'>";
                var clickableLink = "<a href='" + results[i].Cells.results[6].Value + "'>" + results[i].Cells.results[3].Value + "</a><br/><span>Type: " + results[i].Cells.results[17].Value  + "</span><br/><span>Modified: " + currentDate + "</span>";
                html += clickableLink;
                html += "</div>";

            html += "</div>";

        onError: function (err) {
            $("#searchResults").html("<h3>An error occured</h3><br/>" + JSON.stringify(err));

    // Call our Init-function

    // Call our Load-function which will post the actual query

The aforementioned script shows some simple javascript that will call the Search REST API (the "_api/…" part of the query) and then return the results in our html markup. Simple as that.


By utilizing the REST Search API we can very quickly and easily create an application that searches in SharePoint 2013.

This can be implemened in SharePoint Apps, Sandboxed Solutions or Farm Solutions. Whatever is your preference and requirements, the Search API’s should be easy enough to play around with.


Author: Tobias Zimmergren | | @zimmergren


So just a simple tip in case anyone bumps into the same issue as I had a while back. Going from Beta to RTM, some things changed in the way you retrieve values using REST in the SharePoint 2013 client object model.

Description & Solution

In the older versions of the object model, you could simply use something like this in your REST call:

        url: SPSearchResults.url,
        method: "GET",
                "accept": "application/json",
        success: SPSearchResults.onSuccess,
        error: SPSearchResults.onError

As you can see the "headers" is specifying "application/json".

The fix is simply to swap that statement into this:

        url: SPSearchResults.url,
        method: "GET",
                "accept": "application/json;odata=verbose",
        success: SPSearchResults.onSuccess,
        error: SPSearchResults.onError

And that’s a wrap.


I hope this can save someone a few minutes (or more) of debugging for using old example code or ripping up older projects. I’ve found that a lot of examples online, based on the beta of SharePoint 2013, are using the older version of the headers-statement which inevitably will lead to this problem. So with that said, enjoy.

Author: Tobias Zimmergren | | @zimmergren


Recently I’ve had the pleasure (and adventure..) of upgrading a few SharePoint 2010 solutions to SharePoint 2013. One of the things that come up in literally every project I’m involved in, is the ability to quickly and easily change how a list is rendered. More specifically how the fields in that list should be displayed.

Luckily in SharePoint 2013, Microsoft have extended the SPField with a new proprety called JSLink which is a JavaScript Link property. There’s a JSLink property on the SPField class as well as a "JS Link" property on for example List View Web Parts. If we specify this property and point to a custom JavaScript file we can have SharePoint render our fields in a certain way. We can also tell for example our List View Web Parts to point to a specific JavaScript file, so they’re also extended with the JS Link property.

In this blog post I’ll briefly explain what the "JS Link" for a List View Web Part can look like and how you can set the property using PowerShell, C# and in the UI. I’ll also mention ways to set the SPField JSLink property, should you want to use that.

Final results

If you follow along with this article you should be able to render a similar result to this view in a normal Task List in SharePoint 2013:


You can see that the only modification I’ve made right now is to display an icon displaying the importance of the task. Red icons for High Priority and Blue and Yellow for Low and Medium.

Since it’s all based on JavaScript and we’re fully in control of the rendering, we could also change the rendering to look something like this, should we want to:


As you’ve may have noticed I haven’t put down a lot of effort on styling these elemenbts – but you could easily put some nicer styling on these elements through the JavaScript either by hooking up a CSS file or by using inline/embedded styles.

Configuring the JSLink properties

Okay all of what just happened sounds cool and all. But where do I actually configure this property?

Set the JS Link property on a List View Web Part

If you just want to modify an existing list with a custom rendering template, you can specify the JSLink property of any existing list by modifying it’s Web Part Properties and configure the "JS Link" property, like this:


If you configure the aforementioned property on the List View Web Part your list will automatically load your custom JavaScript file upon rendering.

Set the SPField.JSLink property in the Field XML definition

If you are creating your own field, you can modify the Field XML and have the property set through the definition like this:

<?xml version="1.0" encoding="utf-8"?>
<Elements xmlns="">  
       Name="My Awesome Sample Field"
       DisplayName="My Awesome Sample Field"
       Group="Blog Sample Columns">

Set the SPField.JSLink property using the Server-Side Object Model

Simply set the SPField.JSLink property like this. Please note that this code was executed from a Console Application, hence the instantiation of a new SPSite object:

using (SPSite site = new SPSite("http://tozit-sp:2015"))
    SPWeb web = site.RootWeb;
    SPField taskPriorityField = web.Fields["Priority"];

    taskPriorityField.JSLink = "/_layouts/15/Zimmergren.JSLinkSample/AwesomeFile.js";

Set the SPField.JSLink property using PowerShell

If you’re the PowerShell-kind-of-guy-or-gal (and you should be, if you’re working with SharePoint…) then you may find the following simple snippets interesting, as they should come in handy soon enough.

PowerShell: Configure the JSLink property of an SPField

$web = Get-SPWeb http://tozit-sp:2015
$field = $web.Fields["Priority"]
$field.JSLink = "/_layouts/15/Zimmergren.JSLinkSample/Awesomeness.js"

PowerShell: Configure the JSLink property of a Web Part

Note that this is what I’ve been doing in the sample code later on – I’m not setting a custom JSLink for the actual SPField, I’m setting it for the List View Web Part.

$web = Get-SPWeb http://tozit-sp:2015

$webPartPage = "/Lists/Sample%20Tasks/AllItems.aspx"
$file = $web.GetFile($webPartPage)

$webPartManager = $web.GetLimitedWebPartManager($webPartPage, [System.Web.UI.WebControls.WebParts.Pers

$webpart = $webPartManager.WebParts[0]

$webpart.JSLink = "/_layouts/15/Zimmergren.JSLinkSample/Awesomeness.js"


$file.CheckIn("Awesomeness has been delivered")

As you can see in the PowerShell snippet above we’re picking out a specific page (a Web Part page in a list in my case) and picks out the first Web Part (since I know I only have one Web Part on my page) and set the JS Link property there. This will result in the Web Part getting the proper link set and can now utilize the code in your custom javascript file to render the results.

So what does the JS Link JavaScript logic look like?

Okay, so I’ve seen a few ways to modify the JS Link property of a list or a field. But we still haven’t looked at how the actual JavaScript works or what it can look like. So let’s take a quick look at what it could look like for a List View Web Part rendering our items:

// Create a namespace for our functions so we don't collide with anything else
var zimmergrenSample = zimmergrenSample || {};

// Create a function for customizing the Field Rendering of our fields
zimmergrenSample.CustomizeFieldRendering = function ()
    var fieldJsLinkOverride = {};
    fieldJsLinkOverride.Templates = {};

    fieldJsLinkOverride.Templates.Fields =
        // Make sure the Priority field view gets hooked up to the GetPriorityFieldIcon method defined below
        'Priority': { 'View': zimmergrenSample.GetPriorityFieldIcon }

    // Register the rendering template

// Create a function for getting the Priority Field Icon value (called from the first method)
zimmergrenSample.GetPriorityFieldIcon = function (ctx) {
    var priority = ctx.CurrentItem.Priority;

    // In the following section we simply determine what the rendered html output should be. In my case I'm setting an icon.

    if (priority.indexOf("(1) High") != -1) {
        //return "<div style='background-color: #FFB5B5; width: 100%; display: block; border: 2px solid #DE0000; padding-left: 2px;'>" + priority + "</div>";
        return "<img src='/_layouts/15/images/Zimmergren.JSLinkSample/HighPrioritySmall.png' />&nbsp;" + priority;

    if (priority.indexOf("(2) Normal") != -1) {
        //return "<div style='background-color: #FFFFB5; width: 100%; display: block; border: 2px solid #DEDE00; padding-left: 2px;'>" + priority + "</div>";
        return "<img src='/_layouts/15/images/Zimmergren.JSLinkSample/MediumPrioritySmall.png' />&nbsp;" +priority;

    if (priority.indexOf("(3) Low") != -1) {
        //return "<div style='background-color: #B5BBFF; width: 100%; display: block; border: 2px solid #2500DE; padding-left: 2px;'>" + priority + "</div>";
        return "<img src='/_layouts/15/images/Zimmergren.JSLinkSample/LowPrioritySmall.png' />&nbsp;" + priority;

    return ctx.CurrentItem.Priority;

// Call the function. 
// We could've used a self-executing function as well but I think this simplifies the example

With the above script, we’ve simply told our field (Priority) that when it’s rendered it should look format the output HTML according to the contents in my methods. In this case we’re simply making a very simple replacement of text with image to visually indicate the importance of the task.

For examples of how you can construct your SPField.SPLink JavaScript, head on over to Dave Mann’s blog and check it out. Great info!


With a few simple steps (essentially just a JavaScript file and a property on the LVWP or Field) we’ve changed how a list is rendering its data. I’d say that the sky is the limit and I’ve already had one of my clients implement a solution using a custom JS Link to format a set of specific lists they have. What’s even better is that it’s so simple to do, we don’t even have to do a deployment of a new package if we don’t want to.

The reason I’ve chosen to do a Farm Solution (hence the /_layouts paths you see in the url’s) is that most of my clients still run Farm Solutions – and will be running them for a long time to come. And it wraps up a nice package for us to deploy globally in the farm, and then simply have a quick PowerShell script change the properties of the LVWP’s we want to modify and that’ll be that. Easy as 1-2-3.


Microsoft SharePoint Conference 2012 – Recap

December 25th, 2012 by Tobias Zimmergren

Author: Tobias Zimmergren | | @zimmergren


Better late than never for the post-SPC article I suppose. I was in Las Vegas at the Microsoft SharePoint Conference this year (2012) attending some great (and some not so great) sessions about SharePoint 2013. During the week I’ve met many old friends, made some new friends and had a blast every single day.

This will be a fairly short story, mentioning the sessions I liked and talking about some of the events that happened during our stay in Vegas.

What happened at SPC12?

Well, everything happened:

  • We had a majorly awesome SharePint at EyeCandy.
  • I was on a panel in the SharePoint Conference TV.
  • AvePoint had their legendary RedParty.
  • Axceller had an awesome event where Pamela Anderson appeared. The geeks were thrilled, to say the least.
  • Bon Jovi made an appearance and gave us a great show at Mandalay Bay.
  • We saw a lot of great SharePoint SharePoint Sessions.
  • Networking with peers.

Recommended sessions

Instead of shouting about all the new fancy details in how SharePoint 2013 will make your everyday easier, I’d like to shout out to a few of my friends who also gave some of the (in my opinion, of the ones I attended) best performances at SPC12.

Scot Hillier’s JavaScript sessions

Scot did a total of three sessions, two of which I attended with great pleasure and the third one didn’t fit my schedule:

A primer in HTML5 and JavaScript (SPC005)

The Office and SharePoint new Cloud App Model that lights up HTML and JavaScript development. This session will be a primer into all that HTML5 and Javascript have to offer and the best practices for using them. You will learn about HTML5, JSON, jQuery and much more…

JavaScript best practices for developing Apps (SPC136)

SharePoint 2013 introduces a new app model, which is heavily-reliant on client-side programming with JavaScript. While SharePoint developers often have strong server-side programming skills, their client-side programming skills are generally weaker. In this session, we will review the best practices for using JavaScript in SharePoint 2013 apps. We will start by presenting the various patterns for creating libraries in JavaScript that are reusable and maintainable. We will then cover the fundamentals of the REST and CSOM object models. Finally, we will show how to utilize key supporting libraries like jQuery and Knockout. The session will culminate with the presentation of a complete Model-View-ViewModel (MVVM) app demonstrating all of the best practices. Attendees will exit the session ready to start developing SharePoint 2013 apps.

Kirk Evans’ Client Side Rendering session

Kirk is a personal friend of mine and an awesome guy overall. I expected a lot from him, but he blew the roof with this session. I think this is some great content and man is there a ton of awesome things to consider in the SharePoint 2013 box. If you can review one single session from the entire conference, go for this one. At least that’s what I’d do!

Client Side Rendering in SharePoint Server 2013 (SPC040)

SharePoint Server 2013 provides a new way of rendering content to the browser using client side rendering. This new way of rendering leverages web standard technologies like jQuery, JSON and REST to render data in a clearer and simpler way than before. In this session, you will learn these techniques for creating different types of views of data in SharePoint 2013.

Eric Schupps’ Helpdesk App session

So if you’re curious about what Apps has to offer in SharePoint 2013, this is THE session you should review. Eric’s doing a great job of showing off some capabilities in a real-world application usage for SharePoint Apps in SharePoint 2013. Way to go Eric!

A Real-World Help Desk App: End-to-End (SPC006)

This session will go over the nuts and bolts of a real world app scenario that we all know and love… Help desk support. During the session, we will look at the overall architecture the app as well as review the code of key components of the app itself. Finally, the session will describe the learnings found that every SharePoint developer will want to know.


There were tons of great sessions (and some not so great, but that’s a different story altogether) at the conference. Should someone ask me if I would go again the answer would obviously be "Of course, it was awesome. And I like awesomeness."

See you next time folks!