• .NET

    Reusing and customizing a single ContextMenu on a TreeView with RadControls for Silverlight

    This is part two of my Attaching a ContextMenu on TreeView blog post. I will show another approach for adding context menu on a treeview, that uses a single menu that is customized for each treeview item. One context menu per treeview should provide much better performance if the treeview is bound to a large data set, since there are much less visual elements that have to be created. I am also using an updated view model, where each item contains a reference to its parent. This will help me to rely entirely on the model for my application logic, which greatly...
    June 01, 2009
  • .NET

    How to add a right click context menu on a TextBox in Silverlight?

    How to add a right click context menu on a TextBox in Silverlight and also support simple editing commands, like Cut, Copy and Paste? This is pretty easy with RadContextMenu for Silverlight and I will show you now: First I declared a TextBox and set the RadContextMenu.ContextMenu attached property on it: <TextBox x:Name="TextContainer" AcceptsReturn="True" TextWrapping="Wrap" Text="Right click to open a fully functional context menu that depends on the selection and the clipboard content">    <telerikNavigation:RadContextMenu.ContextMenu>        <telerikNavigation:RadContextMenu ItemClick="ContextMenuClick" Opened="ContextMenuOpened" Closed="ContextMenuClosed">             <telerikNavigation:RadMenuItem Header="Cut" />             <telerikNavigation:RadMenuItem Header="Copy" />             <telerikNavigation:RadMenuItem Header="Paste" />         </telerikNavigation:RadContextMenu>     </telerikNavigation:RadContextMenu.ContextMenu> </TextBox> .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; }   If you want to open the context menu with Right click, you need to make the Silverlight plug-in windowless. Otherwise, you should set the EventName and/or ModifierKey properties on RadContextMenu to configure it...
  • .NET

    Attaching a ContextMenu on a TreeView with RadControls for Silverlight

    Telerik RadControls for Silverlight provide a very powerful ContextMenu control, that supports right click, modifier keys and that can be easily attached to any visual element. In this article I will show how to attach RadContextMenu to a data-bound RadTreeView and perform actions on the clicked treeview items, depending on the selection in the context menu. For simplicity, here I will use a treeview, bound to a static collection, but it can be easily extended to load its items from a web service: <UserControl x:Class="ContextMenuInTreeView.Page" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:ContextMenuInTreeView" xmlns:telerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls" xmlns:telerikNavigation="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation"> <UserControl.Resources> <local:DataViewModel x:Key="ViewModel" /> <telerik:HierarchicalDataTemplate x:Key="TreeViewItemTemplate" ItemsSource="{Binding Children}"> <TextBlock Text="{Binding Text}"> <telerikNavigation:RadContextMenu.ContextMenu> <telerikNavigation:RadContextMenu> <telerikNavigation:RadMenuItem Header="New Child" /> <telerikNavigation:RadMenuItem Header="New Sibling" /> <telerikNavigation:RadMenuItem Header="Delete" /> </telerikNavigation:RadContextMenu> </telerikNavigation:RadContextMenu.ContextMenu> </TextBlock> </telerik:HierarchicalDataTemplate> </UserControl.Resources> <StackPanel Background="White" DataContext="{StaticResource...