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.

How to Use the DropDown Control

To use the DropDown on your Silverlight page:

<UserControl x:Class="DropDown.Page"
    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" />

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()

        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:

The DropDown Control

Further Information

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