Telerik blogs

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  • Web ASP.NET AJAX

    Uploading Multiple Files with RadUpload

    Hello Everyone, my name is Rosi and I am a developer on the ASP.NET navigation controls team. This is my first blog post and I will be talking about the RadUpload component.  Many customers have asked how to upload multiple files with it. Unfortunately RadUpload does not yet support this functionality out of the box, but I will show you how to work-around this limitation. The trick is uploading one  .zip file and extracting it on the server.  To achieve this we will need a little help from a third party library.  Such libraries are  DotNetZip and SharpZipLib which provide a convenient API to manipulate .zip files.  For the purposes of this blog post...
    June 19, 2008
  • Desktop WPF

    WPF Data Binding: Unraveling data templates

    Data binding in WPF in general and particularly working with data templates tends to be quite tricky some times. Here I'll present you some more advanced tips for dealing with data templates. To start with, I want to refer to an article I read a while ago. It is about the basics of data templates and I want to use it as a starting point and a foundation to build on. If you are just starting to work with WPF or you have never met with data templates, please read it first to get acquainted with the idea. I'll use ItemsControl for...
    June 18, 2008
  • Web

    Firefox 3

    Today is D-Day ("Download Day") for the much-anticipated version 3 of Mozilla's popular web browsing client, Firefox. In an effort to create more buzz around the launch, Mozilla has requested that users help them attempt a new Guinness World Record for most downloads in a 24-hour period by downloading the new Firefox release today. Over 1.7 million people from around the world pledged to download the new client today. As an aside, I think its pretty cool that they are trying to get in the Guinness record books, but is it really a record if it's never been done before? I...
    June 18, 2008
  • Web ASP.NET AJAX

    How To Override Styles in a RadControl for ASP.NET AJAX' Embedded Skin

    In the era of the "classic" RadControls for ASP.NET modifying a skin required opening ~ / RadControls / [ControlName] / Skins / [SkinName] / styles.css and making the necessary changes. The new RadControls for ASP.NET AJAX (formerly known as "Prometheus") by default use skins, which are embedded in the assembly. This simplifies deployment but sacrifices customization. Or does it? Actually, making a change to an embedded skin of a RadControl for ASP.NET AJAX is quite easy, given that one keeps in mind a couple of notable things. Namely: (1) Since the embedded skin cannot be modified, the custom styles need to be placed elsewhere. For example ...
    June 17, 2008
  • Productivity

    Saving a few lines of code. Part I - Infinite loops.

    Inspired by Scott Hanselman's quest to read source code to be a better developer I decided to start a series of blog posts and write about anything which comes to my mind in the everyday encountering with THE code here at Telerik. As Scott is doing a great job with his quest I would rather focus on topics in which the distinction between right and wrong is not clear enough. I'm not talking about starting flame wars but rather talking about all the aspects and the different pros and cons of each approach. Today's topic will be about infinite loops and mostly about infinite...
    June 17, 2008
  • Desktop WPF

    WPF: Custom control style and theme resources

    Hi everyone. I'm Jordan Dimitrov from the WPF team. I'm planning to post about .Net, first with few post about WPF. My first post is about resources and themes. Recently I had a problem with resources from themes files. I tried to use DynamicResource markup extension in Style in generic.xaml (sample bellow). But it didn't work. I changed DynamicResource extension with StaticResource markup extension and now it works. But WHY DynamicResource doesn't work? Sample XAML In my generic.xaml there are two items - a style for my CustomControl1 and a resource SolidColorBrush with key brush1.     1 <ResourceDictionary     2    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     3    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     4    xmlns:local="clr-namespace:WpfApplication1">    ...
  • Desktop WPF

    WPF Line Drawing and the Device-Pixel-(In)dependence

    As you are probably aware resolution and device independence is one of the fundamental design goals of WPF. In order to achieve the desired effect the framework does not work directly with physical (device-dependent) pixels but abstracts this notion into device-independent measuring units like inches. There are two main benefits that you get from this: Automatic DPI-aware scaling Sub-pixel positioning -- WPF coordinates use floating point numbers that theoretically give you the ability to draw with higher precision than the one provided by the ordinary pixel grid. However, there is one nasty side-effect related to the fact that WPF graphics are anti-aliased by default...
    June 16, 2008
  • People

    The Man Behind the Curtain

    A short time ago, in a land not so far away, I was back in college doing the whole evangelism thing part-time as a member of Microsoft's Student Partner program. I got a lot of exposure to some great Microsoft products and, most importantly, was able to spend a lot of time coming up with cool ways to show students how to dive head-first into .NET development. At the end of my senior year, just before leaving the Student Partner program, I had this crazy idea that I could mosey on up to Redmond and say hi to the man behind the curtain...
    June 16, 2008
  • Desktop WinForms

    Spinning RadCarousel

    This is my first post, and by obligation I have to say a few words as an introduction. I’m Mihail Valkov, and I have been working on component development at Telerik for several years. I know my name comes a bit mouthful for many of you, so I'll just use Mike for short. I'm the guy behind some of our Windows Forms components and part of the team that created the great TPF. I am excited of the many good things to come in our WinForms offering in the near future and I am determined to keep you posted about...
  • Desktop WinForms

    RadCarousel for WinForms - Even More Bang for your Buck

    Introducing the RadCarousel component into our suite can be compared to what the Big Bang was to the Universe in the early days. We’ve seen it all - from feature requests straight after its initial release, to statements it is worth as much as the entire suite. A few words of introduction - the RadCarousel animates a number of alternatives to choose from in a visually appealing way. RadCarousel animates the location, opacity and scale of its items. Items can be moved along any path described by a Bezier curve or an ellipse. These basic capabilities allow the control to be...