Providing options to select from a ComboBox

A ComboBox control is an items control and works like ListBox, but only one item from the list is selectable. A ListBox control by default lists multiple items on screen, but ComboBox control displays the scrollable list only on a user click. Thus, it takes up a lot less space.

This recipe will talk about ComboBox control and how to use it.

Getting ready

Begin with creating a new WPF application project, called  CH02.ComboBoxDemo, using your Visual Studio IDE.

How to do it...

Follow these simple steps to add a ComboBox control in your application UI:

1. Replace the default Grid with a StackPanel to host UI controls horizontally stacked.
2. Add the following XAML code, inside the StackPanel, to have a simple ComboBox control with some items in it:

<ComboBox Width="150" Height="26" 
    Margin="10"> 
    <ComboBoxItem Content="Item 1" /> 
    <ComboBoxItem Content="Item 2" IsSelected="True" /> 
    <ComboBoxItem Content="Item 3" /> 
  ...