Andy Edinborough

I present you with the CSS Stress Test bookmarklet.

Now let me explain: I have been losing my sanity over the oddest issue.  The project I’m working on right now has a fairly complex stylesheet.  Performance for the site is absolutely critical.  I’ve done my best to squeeze and optimize every line I can.  In all browsers, it runs like a champion.  Except IE9.  It runs terribly in IE9.  To make matters worse, it runs fine in IE8, IE7, and though it’s mangled, it even runs in IE6!

Something specific to IE9 was causing a serious performance glitch.  I realized fairly quickly that CSS was to blame.  Disabling JavaScript had no effect, but disabling all CSS instantly fixed performance.  I went through the usual suspects: filters, and various new CSS3 properties, but nothing seemed to help.  So I reached out to the community looking for something that could profile my… Read More →

I may be a nerd (that is, a geek who get’s paid), but I don’t enjoy writing stored procedures.  However, in working with the Entity Framework, I’ve found that doing complex and often repeated queries of my Entity Framework sets is rather inefficient.  My complete round-trip page loads (generate and execute query, then produce HTML) takes about 1,000ms on average.  So I wanted to replace this ugly query with a simple stored procedure—precompiled, ready to fire, and highly optimized for my specific query, while still having the ability to do ad-hoc queries.

So at PDC10 I made sure to talk to the EF boys and they pointed me to the System.Data.Objects.ObjectContext.Translate method.  This little bad boy will take a DataReader and create an enumerable of my objects from it—perfect.

Let’s walk through the “gotchas”.  In my example below, I have a class named Product.  I want to do… Read More →

There are a TON of awful date pickers out there.  For a who’s who of the worst, check out Date Time Picker Competive Analysis.

jQuery UI’s Datepicker control is by far the best looking and most intuitive picker.  In light of maintaining a uniform UI, I wanted a date time picker that played on that control.  I found two:

1. http://blog.w3visions.com/2009/04/date-time-picker-with-jquery-ui-datepicker/ – Integrates with Datepicker, but the UI is completely disjoined.
2. http://engineeredweb.com/blog/10/4/jquery-date-and-time-pickers – The first one listed here is the one I had been using.  It integrated nicely with Datetpicker, but the author’s website is down now, and I found it was quite bulky and that it limited how you could use Datepicker—no inlining, no animation, etc.

So I created a duck-punched DateTimepicker that simply manipulates the Datepicker DOM element and functions to add the missing functionality:

As you can see, I also added the ability to specify custom buttons… Read More →

UPDATE:  Please don’t read this post… It’s actually kind stupid.  :/  Now that IE supports 2D CSS tranforms, there are betters ways of handling this.

Can you believe that in 2010 we are still stuck  with using animated gif’s?  They support transparency, but not the alpha-channel.  So when you need to create a wait indicator that won’t have a specific background, you’re stuck with a pixelated look.

Recently, I wanted to create a beautiful wait-indicator to display while AJAX was loading.  I wanted to use PNG, but animated PNG’s don’t have wide support yet. Furthermore, PNG’s are fairly large, so an animated one would be orders of multitude larger.  I thought, “This is silly.  This is the image I want. ROTATE IT!”.  Seriously, what year is this?  1996?!

Enter Raphaël:

Raphaël is a small JavaScript library that should simplify your work with vector graphics on the web. If… Read More →

The idea of implementing remoting will give most programmers instant heartburn.  Granted, I’m not an expert on all the existing remoting solutions, but I haven’t found one that works intuitively.

All the different solutions I’ve seen require just about double the code.  You write a method once, then write a wrapper for the method to implement remoting. 

Furthermore, they often require special handling to make sure the contextual variables are maintained.  For example, when I was working with CSLA recently, I was appalled to see:

customer = customer.Save();

The Save() method executes remotely, so the customer object that comes back has a separate memory reference.  Surely, we can get around this. 

So I set out to write my own.  I had 4 main goals.  I wanted to be able to:

// Remote any method with no code changes to the business object
Remoting.Execute(customer.Save);

// Executes remotely, and updates the object… Read More →

Sigh. 

These are text-based services… it’s not that hard, and yet all the projects I found out there were nasty—bloated and severely error prone.  So, I rebuilt one.  This is based heavily on xemail-net.  I simplified it quite a bit—created standard methods for repeated code blocks and implemented a base class to simplify the creation of the Pop3 client.

Yahoo doesn’t offer much help to .NET/C# developers when it comes to getting started with using their API’s and OAuth.  So I’ve put together a quick-hit starter pack.

1. Yahoo! YQL Console
   This is fun for all ages!  I just get all giggly when I see all that Yahoo has made available through YQL (Yahoo Query Language).  You can use this tool to perfect your queries and figure out just what you want to accomplish.  As a supplement, you can check out the PDF Documentation as well as the online version.
   
2. My Projects @ Yahoo Developer Network
   Once you’ve got your base application logic in place, you can request the keys you’ll need to communication with Yahoo using OAuth.  This will let you take advantage of the higher usage limit of 100,000 requests / day and 10,000 requests / hour.
   
3. Simple C# OAuth Code
   Unfortunately, the C# OAuth libraries listed… Read More →

AAAARRRRGGGHHH!!

I had to get that out of my system.  I’m not familiar enough with the exact specification of OAuth to know whether it’s Yahoo or Yedda that can’t read a spec, but the Yedda implementation of OAuth available on Google Code, doesn’t even begin to work with Yahoo’s YQL API.  Futhermore, the Yedda implementation is bloated and hard to follow.  Why is it that so many programmers feel the need to over complicate EVEYRTHING.

So… Here’s my rewrite of the Yedda implemenation.  It works out-of-the-box.  There are no objects to instantiate, just 4 very simple static methods to use.  A word of caution, System.Net.WebClient cannot be used to talk to Yahoo.

Update (1/29/2010): See a complete working example of C# / OAuth / Yahoo YQL.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;

namespace WAN.Lib {
    public static class OAuth {
        private static Random… Read More →

This truly is “embarrassing”.  The Mozilla team really pulled a “Windows ME” with their latest release of Firefox.  After being open for 5 minutes, Firefox with only the “embarrassing” tab open has 26 MB more memory usage than IE8 running for hours with 3 tabs open (including a Bing Map).

LAME!  And what happened to Firebug?!  When I try to inspect a page, the CSS gets completely hosed.  I know the Firebug team has rewritten it to use JetPack, but it looks like they had to rush to get a v3.5 compatible version out in time for Mozilla’s release.

I’m not one to rollback software.  I’m a software junkie—I NEED the latest version.  It is with a heart that I uninstall Firefox v3.5.  I’m slighted enough that I’ll probably go back to v2.0 until this whole mess gets straightened out <weeps bitterly />.

Update:  Firefox v3.5.1 is no better

I… Read More →

The lack of late-binding in C# has been one of my biggest gripes about C#.  Finally, in the .NET Framework v4.0, the dynamic keyword has been introduced (it could be argued that it is too loose—allowing for variant types).  But until it is released, the need still exists, and even then, not all clients will immediately support it.  So, in a bind, I wrote a simple class to allow access to objects via late-binding in C#. 

The trick to figuring out how to write the code came from using Reflector to decompile some VB.NET code… (I love reverse-engineering :]).  The answer is that the VB compiler makes use of an area of the .NET Framework within the Microsoft.VisualBasic assembly that is marked with the attribute [EditorBrowsable(EditorBrowsableState.Never)] to prevent people from discovering it.

Here’s an example that uses my Late-Binding code to open an Excel Spreadsheet and convert it to a… Read More →