Telerik blogs

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  • Web

    Encode and Decode strings using JavaScript

    In order for a string to be read from all computers sometimes it is useful to encode and decode it. This can be easily achieved using the JavaScript built-in escape() and unescape() methods. Both the escape() and the unescape() methods have the same argument – the string which will be escaped or unescaped. The escape() method returns a string value (in Unicode format) that represents the encoded contents of the function argument. All spaces, punctuation, accented characters, and any other non-ASCII characters are replaced with %xx encoding, where xx is equivalent to the hexadecimal number representing the character. For example, a space is returned as "%20". Additionally, having...
    January 15, 2009 2 min read
  • Desktop WPF

    How To: WPF declarative binding to LINQ to SQL using ObjectDataProvider

    With ObjectDataProvider you can easily instantiate LINQ to SQL DataContext and request desired ITable using GetTable method: <Window x:Class="WpfObjectProviderWithLinqToSql.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" xmlns:local="clr-namespace:WpfObjectProviderWithLinqToSql" Title="How to bind declaratively LINQ to SQL DataContext using ObjectDataProvider" Height="400" Width="500" ResizeMode="NoResize"> <Grid> <Grid.Resources> <ObjectDataProvider x:Key="customers" ObjectType="{x:Type local:NorthwindDataContext}" MethodName="GetTable"> ...
    January 14, 2009 1 min read
  • Web

    BDD. At first I was afraid, I was petrified.

    Yes, seriously, my first reaction to a post in which I noticed BDD-kinda-tests was something like "whoa, interesting naming convention for test method names, and all these underscores...". After that I came upon several other blog posts containing BDD tests and I still didn't get the idea. Then I read Dan North's post introducing the idea of Behavior Driven Development and I finally started catching the point. But catching the point at that time was not like "well, it's worth it and I'll try it" but rather like "ok, it's a TDD variation with some funky new lingo, so... ok". I could abandon...
    January 14, 2009 2 min read
  • Desktop WPF

    Implementing the RadNumericUpDown for WPF

    I am sure that you are wondering why I would spend time blogging about implementing a control as simple as the RadNumericUpDown for WPF.  After all this is not a complex control and if you have done any client development you have probably used a NumericUpDown in the past.  Well, this is not the same control and it does have some nice features that you may not be aware are available.  I thought it might be nice to demonstrate some of these features. So most likely you have used the WinForms version of NumericUpDown and were limited to only a few...
    January 13, 2009 3 min read
  • Release

    The New Telerik TV Video Portal is Live

    We are excited to announce the launch of our brand new video portal—Telerik TV—a gateway to all Telerik video resources. The portal was designed with the purpose of becoming your “one-stop-shop” for all Telerik video materials, making it easy to discover video support resources. The new video portal allows you to watch the latest or most popular videos on Telerik product lines, or simply browse the various Telerik TV channels—TelerikWatch Minute presented by our Chief Evangelist, Todd Anglin; RadTips with Kevin Babcock, another Telerik Evangelist; EdgeOfDev, focusing on interesting industry trends; and Telerik Real World - a virtual library of showcase videos dedicated...
    January 13, 2009 1 min read
  • Web

    Customizing the Radial RadGauge

    Hello everyone and happy new year. Today I decided to break the lengthy silence on my blog with an example on how to customize the RadGauge. Since there were a couple of requests for custom Radial Gauge, I will present a way to create a semi-circle gauge. That is generally achieved in two steps: Customize the radial scale range Four parameters define the radial scale range: StartAngle, SweepAngle, Radius and Center. The StartAngle and SweepAngle are specified in degrees (0 to 360), starting from the right side of the gauge, going clockwise (note, that positive angle direction is starts from positive X and goes to the positive...
    January 13, 2009 3 min read
  • Release

    Telerik WinForms examples can be viewed directly from the web

    Up until today, of all product lines that Telerik offers only RadControls for WinForms required full installation of the product in order to view the examples the suite comes with. All other product lines had a web version of their Quick-Start Frameworks (QSFs), making product and feature reviews easy and trouble-free. Ever since the introduction of RadControls for WinForms a couple of years ago, we have been looking for ways to provide the WinForms demos to our customers without asking them to install the suite beforehand. Yes, there are several technologies which allow WinForms apps to run in web-based environments, but...
    January 12, 2009 2 min read
  • Web

    Comparing Generic Types

        Today I was dealing with the problem of comparing generic types in Silverlight. After researching the problem I found many similar issues for which I couldn't find any straightforward solution on the web. So here we go - a post on the issue how to compare generic types. First, let’s say we have a simple generic class which is composed of two generic properties A and B, and a method that we will later use to compare these two properties. Moreover, I will constraint the class to invoke the constructor of the generic type argument by using where T : new()      public class GenericClass<T> where T : new()       {...
    January 10, 2009 2 min read
  • Release

    Improving OpenAccess ObjectScopeProvider for Runtime Connection Config

    Phew! That's a long blog post title, but hopefully it clearly conveys what I'm about to show you. In my last post, I talked about where you should set your OpenAccess database connection strings. I showed you how you can define multiple database connections in your web.config (or app.config), simulating the idea of having a unique connection string for DEV, TEST, and PROD environments. So now that you have your connection strings set in a way that is easy to maintain, you need a way to easily to tell your OpenAccess persistent classes to use a specific connection at runtime. Let's look...
    January 09, 2009 3 min read
  • People

    Telerik Wins Six STC Awards

    A few months ago, we asked you to share your comments on our new print ad campaign for Telerik products and the Sitefinity CMS. Today, we are happy to announce that the majority of those ads have been recognized with a number of awards in the 2008 Technical Art Competition of the Society of Technical Communication (STC), Boston Chapter. The STC is an individual membership organization dedicated to advancing the arts and sciences of technical communication. This is an important distinction for us because it comes from our fellow editors, designers, and other technical communicators. Below are the awarded entries (click on an...
    January 09, 2009 1 min read