Enum values

List the values of an enum

EnumValues returns all the values of an enum, to use as the ItemsSource of a ComboBox or a ListBox:

<UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:wpf="clr-namespace:Meziantou.Framework.WPF;assembly=Meziantou.Framework.WPF"
             xmlns:local="clr-namespace:Meziantou.Framework.WPF.EnumComboBox">
    <ComboBox ItemsSource="{wpf:EnumValues {x:Type local:Week}}" />
</UserControl>

The items are the enum values themselves, so the control shows their names, and SelectedItem binds to a property of the enum type. The markup extension throws an InvalidOperationException when the type is not set or is not an enum.

Show localized names

To show readable or translated names, put a [Display] attribute (from System.ComponentModel.DataAnnotations) on the members of the enum. Its Name is the text to show, or, with ResourceType, the name of a static property of that type that returns the text, such as the properties of a resource file:

public enum Week
{
    [Display(ResourceType = typeof(TestEnumResources), Name = "TestEnum_First")]
    First,

    [Display(ResourceType = typeof(TestEnumResources), Name = "TestEnum_Second")]
    Second,

    [Display(ResourceType = typeof(TestEnumResources), Name = "TestEnum_Third")]
    Third,

    [Display(ResourceType = typeof(TestEnumResources), Name = "TestEnum_Fourth")]
    Fourth,

    [Display(ResourceType = typeof(TestEnumResources), Name = "TestEnum_Last")]
    Last,
}

LocalizedEnumValues returns a LocalizedEnumValue for each member. Show its Name, and select its Value:

<UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:wpf="clr-namespace:Meziantou.Framework.WPF;assembly=Meziantou.Framework.WPF"
             xmlns:local="clr-namespace:Meziantou.Framework.WPF.EnumComboBox">
    <!-- Displays the names from the [Display] attributes of the enum members -->
    <ComboBox ItemsSource="{wpf:LocalizedEnumValues {x:Type local:Week}}" DisplayMemberPath="Name" SelectedValuePath="Value" />
</UserControl>

• Name is the name of the [Display] attribute, read from the resources each time it is read, so it follows the current UI culture. A member without the attribute, or with an attribute that has no Name, shows the member name.
• Value is the enum value: with SelectedValuePath="Value", bind SelectedValue to a property of the enum type.
• ToString() returns the Name, so the control shows it even without DisplayMemberPath.
• The list of an enum type is created once and shared by every control that uses it.