Silverlight DropDown Control
This free DropDown control is, as its name suggests a generic control for allowing any content to be presented in a manner similar to the ComboBox.
This Silverlight only DropDown Control is easy to implement on your Silverlight driven website and is also customizable to provide a visual feel suitable for any site design.
To use the DropDown control you will need to add a reference to Liquid.dll in your project.
You need to login to Download the DropDown example, If you do not have a login you can register for free!
How to Use the DropDown Control
To use the DropDown on your Silverlight page:
<UserControl x:Class="DropDown.Page"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:liquid="clr-namespace:Liquid;assembly=Liquid"
xmlns:liquidTreeView="clr-namespace:Liquid;assembly=Liquid.TreeView"
Width="400" Height="300">
<Grid x:Name="LayoutRoot" Background="White">
<liquid:DropDown x:Name="dropDown" Width="100" Height="23" SelectedItemContent="Pick...">
<liquidTreeView:Tree x:Name="treeView" Width="150" Height="150" EnableLines="True" SelectionChanged="Tree_SelectionChanged">
<liquidTreeView:Node Title="Root Node">
<liquidTreeView:Node Title="Item 1" />
<liquidTreeView:Node Title="Item 2" />
<liquidTreeView:Node Title="Item 3" />
<liquidTreeView:Node Title="Item 4" />
<liquidTreeView:Node Title="Item 5" />
</liquidTreeView:Node>
</liquidTreeView:Tree>
</liquid:DropDown>
</Grid>
</UserControl>
With this DropDown control example we embed a TreeView control, this is the content that will "drop down" or "popup" when the button it clicked.
We have a single DropDown control named dropDown, this when clicked will display the TreeView and allow you to expand and select a single node from the tree. When you have selected a node the TreeView will close, this is handled in a few lines of C# below.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Liquid;
namespace DropDown
{
public partial class Page : UserControl
{
public Page()
{
InitializeComponent();
}
private void Tree_SelectionChanged(object sender, TreeEventArgs e)
{
dropDown.SelectedItemContent = e.Target.Title;
dropDown.IsOpen = false;
}
}
}
As you can see in the C# we attach an event handler to theSelectionChanged event which occurs when a node is selected. In this event we change the SelectedItemContent property of our dropdown to relect the changes made and then close the dropdown with DropDown.IsOpen = false.
Example Silverlight DropDown Control:
Latest Forum Posts
Here are latest posts from around the forums, if you have a question about any of the Liquid controls you can get your answers in the Forum.