Creating the Flag Enum Bound ComboBox in WPF using xToolkit

This WPF control allows binding the fields of the flag enumeration to the multi-selection combo box.

Create flag enumeration with fields to be bound to the combo box

[Flags]
public enum FlagEnumSample_e
{
    None = 0,
    [EnumDisplayName("Field 1")]
    Field1 = 1,
    [Description("Second Field")]
    Field2 = 2,
    Field3 = 4,
    Field2AndField3 = Field2 | Field3,
    Field4 = 8
}

Default value assigned to title is enumeration name. To assign the custom title inherit DisplayNameAttribute

[AttributeUsage(AttributeTargets.Field)]
public class EnumDisplayNameAttribute : DisplayNameAttribute 
{
    public EnumDisplayNameAttribute(string dispName) : base(dispName) 
    {
    }
}

Bind the View Model property in the XAML to the Value dependency property.

public class FlagEnumComboBoxControlVM
{
    public FlagEnumSample_e EnumPrp { get; set; }
}

<UserControl x:Class="Wpf.Docs.EnumComboBoxControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:ctrls="clr-namespace:Xarial.XToolkit.Wpf.Controls;assembly=Xarial.XToolkit.Wpf">
    <Grid>
        <ctrls:FlagEnumComboBox Value="{Binding Path=EnumPrp}"/>
    </Grid>
</UserControl>

Control supports joined values as well as none (0) value. These items will be assigned with blue and gray colors correspondingly.