A common scenario in RIA's is to show a large amount of small pictures on a single page. Let's say we want to show 100 images in a grid. While the simplest approach is to just put in 100 image objects and load in the images one by one, I believe it can be done smarter... The cost of a request Each and every request will have a header overhead of about ~400 bytes outgoing and ~200 bytes ingoing - both varying depending on the host, cookies, headers etc. Multiply that by 100 requests and we've got about...

Recently I was doing some experimental AS3 development. Much to my surprise, simple collection classes like Stack/Queue are not available in the framework - guess I'm spoiled being used to the .NET Framework. I ended up implementing a simple stack using an internal linked list. There's nothing exciting about the implementation but I thought others might be able to use it, so here it is :) StackNode.as package dk.improve.collections { internal final class StackNode { public var value:Object; ...

What does Flash, upload, cookies, IIS load balancing and cookies have to do with each others? More than I'd like :( When users need to upload files I often use the Flash based SWFUpload component. It allows for multiple file selection and progress display during upload. Handling the uploaded files on the .NET side is rather easy: for (int i = 0; i < Request.Files.Count; i++) { HttpPostedFile hpf = Request.Files[i]; // ... Save / process the HttpPostedFile } One of the arguments for using Flash for web designs is that...

Obtaining the movie height & weidth of a Flash file is an easy task using the swfdump tool that comes as part of the swftools package. Here's an example of how to invoke swfdump from C# and read out the height & width of a given Flash file. Start out by downloading on of the swftools releases. I'm using the latest development snapshot. I'll be using one of the Flash files I made in a previous blog post as a test file, but you can use any .swf file you want. The test Flash file is called test.swf. ...

Skilled developers are hard to come by these days, that includes Flash/AS3/Flex developers. As the product I'm working on is very much dependent on a Flash based frontend, I've been forced to learn & work with AS3 & Flex recently. It's a great experience, learning a new language - especially now that Silverlight is marching forward. As the old saying goes, know your enemy. Anyways, enough with the chit chatting, on with the problems. Today I tried making a very simple functionality, I wanted to be able to select a number of images by making them highlight when...