• .NET

    How to: Databind Telerik’s ToolBar

    In this post we will go through a scenario for databinding the RadToolBar control. Here is the end result: And the demo project with everything included: ToolBarMVVM.zip How to databind the ToolBar? The ToolBar is an ItemsControl and can be databound to any IEnumerable, but it is preferable to bind it to an observable collection since any changes in it will be reflected by the ToolBar. Since there is no ToolBarItem, because ToolBar may contain variety of other controls, we will use DataTemplateSelector class to help us determine the template for each item inside the ToolBar: public class ToolBarTemplateSelector : DataTemplateSelector     {         public override DataTemplate SelectTemplate(object item, DependencyObject container)         {             if (item...
    September 28, 2010
  • .NET

    How to: Telerik’s TabControl for Silverlight

    Let’s go through implementing several scenarios for the TabControl with quick, short explanations:    1. How to databind the TabControl?    2. How to enable drag-rearrange of items?    3. How to animate rearranging items?    4. How to add a Close Button to the TabItems using a Command?    5. How to animate content changes?    6. How to add a “New Tab” button when databound?    7. How to animate item add / removes? Here is the end result:    And the demo project with everything included:  tabcontrol-howto-demos.zip And of course the details, in short - How to databind the TabControl? The TabControl is a standard ItemsControl and can be databound to...
    September 28, 2010
  • .NET

    Wrapping up the Telerik Eastern Canada User Group Tour

    Hey everyone! Now that I'm all back and settled in the Boston metro area, it's time to make some resources available to people who attended and for anyone interested in a little bit of Silverlight goodness. First though I've got a tiny side-note as far as the presentations.  Originally in this post I mentioned that we offered three different Silverlight talks to the user groups, but as it turns out nobody picked this one: Building a Unified Experience – Developing with Silverlight 4 and Windows Phone 7 In this session, we will get look into development on both the full Silverlight platform and on Windows Phone...
    September 21, 2010
  • .NET

    5+ Ways to Reduce your .Xap Size

    Being Silverlight developer means that we are also kind of web developers. From this point of view, we also have to think about the web traffic that our applications generate. We need to reduce it as much as possible. So basically we need to reduce the size of the application's output - the .xap file. In this post I'll try to summarize the five ways to reduce the size of a xap that I've shared today with Sofia's Silverlight User Group. Understanding the Xap In order to reduce the size of a xap file, we should first be aware of its structure. Basically it can contain only 4 things: AppManifest.xaml -...
  • .NET

    Building a Windows Phone 7 control from the ground up - Part Two - the “Date ListBox”

    The next interesting part of building a Windows Phone 7 DatePicker control is the Date ListBox. That is a ListBox which should meet the following requirements: Can display in a human readable manner one of the three Date components: Day, Month and Year Should be “Infinite” – as discussed in my previous post. Should use data virtualization (to be most efficient). As you can see our “Infinite ListBox” project now comes in hand. The last two of the upper requirements are already implemented and all we need to do is to implement a special VirtualizedDataItem<DateTime> that provides the needed information to bind to. For a...
    September 02, 2010