Tag: XAML

If you need a custom editor to edit a specific data, you can use one of the following approaches:   Use CellEditTemplate property of the GridViewColumn. Create a custom column by inheriting from GridViewBoundColumnBase.   As almost anything in our life both approaches have some advantages and disadvantages. Although it is quite easy to implement the first option, there are some significant disadvantages like not so usable with many RadGridView instances, and more important this bypasses the RadGridView validation and editing engine. For more information about this approach you can take a look at this online example.   In this blog post I’ll try to explain how to...

With our still hot Q3 2009 release we introduced a brand new RadCoverFlow control, that was rewritten from scratch in order to be able to exploit some new features in Silverlight 3 that improved both its performance and appearance. We are now using matrix projections to transform the items’ content and pixel shader effects to render the reflection. This allows us to show and properly transform any element in RadCoverFlow, including UI Elements, controls and video, as well as instantly synchronize the reflection. This major change in the control caused major changes in its API and usage patterns. We provide some...

In some scenarios it is required to load thousands of items in a ComboBox. Since by default the control creates RadComboBoxItem containers for each data item, it might take some time to open the drop-down. To resolve the problem you only need to change the RadComboBox ItemsPanel with VirtualizingStackPanel: <telerikInput:RadComboBox> <telerikInput:RadComboBox.ItemsPanel> <ItemsPanelTemplate> <VirtualizingStackPanel /> </ItemsPanelTemplate> </telerikInput:RadComboBox.ItemsPanel> </telerikInput:RadComboBox> .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; }   thus making the drop-down to open instantly. Attached is a simple application that loads 1000 items in two RadComboBox controls, one virtualized, the other – not virtualized. The difference between the two controls is visible and becomes much larger if you create 100,000 items! VirtualizingComboBox I hope this helps....

The secondary axes feature has been one of the most frequently requested over the time by our customers and also one of the major new development tasks that found place in our Q3.2009 schedule. Now I’m glad to announce that the wait is near its end. Our development team did their best to not only make it happen but to make it happen in time for the Q3.2009 beta 2 release(later this week). Thus, the most enthusiastic amongst you, will have the chance to grab this early release and play around with this new stuff. Let us have a brief...

The Silverlight team decided to remove the ScrollBar control that used to be part of CoverFlow's control template. One of the reasons behind this decision is the easiness by which you can now, using Silverlight 3 element binding, create your own navigation. To learn more about all changes introduced by the beta version check my previous blog post here. This article explains in details how to create your own navigation using a range control, e.g. one that inherits from the RangeBase class. The first thing we need to do is to declare a CoverFlow control with some items in a straight-forward...