Setting a combo box item disabled

I had a colleague ask me how to set a combo box item disabled and while I knew it could be done, I couldn't remember the details immediately. So I'm writing this blog entry so I never have to think about it again.

Start a new C# WPF project, any framework. Call the project DisableComboBoxItem.

Here's the MainWindow's XAML - the style enforces the disabling of the items.

<Window x:Class="DisableComboBoxItem.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

        xmlns:local="clr-namespace:DisableComboBoxItem"

        DataContext="{Binding RelativeSource={RelativeSource Self}}"

        mc:Ignorable="d"

        Title="MainWindow" Height="450" Width="800">

    <Window.Resources>

        <Style TargetType="ComboBoxItem">

            <Setter Property="IsEnabled" Value="{Binding IsEnabled}"/>

        </Style>

    </Window.Resources>

    <ComboBox Width="100" Height="20" ItemsSource="{Binding Items}" DisplayMemberPath="Name" IsEditable="False"/>

</Window>

Here's the code behind. Its only job is to initialize the items source.

using System.Collections.Generic;

using System.Windows;

namespace DisableComboBoxItem

{

    public class cItem

    {

        public string Name { get; set; }

        public bool IsEnabled { get; set; }

    }

    public partial class MainWindow : Window

    {

        private List<cItem> _Items = new List<cItem>()

            {

                new cItem() {Name="Enabled", IsEnabled=true},

                new cItem() {Name="Disabled", IsEnabled=false}

            };

        public List<cItem> Items { get { return _Items; } }

        public MainWindow()

        {

            InitializeComponent();

        }

    }

}

Here's the result. Pretty impressive eh? LOL