<UserControl x:Class="EditableComboInGridViewAddingItems_SL.MainPage"
    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:telerik="http://schemas.telerik.com/2008/xaml/presentation"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">

    <Grid x:Name="LayoutRoot" Background="White">
        <telerik:RadGridView x:Name="RadGridView1" AutoGenerateColumns="False">
            <telerik:RadGridView.Columns>
                <telerik:GridViewComboBoxColumn UniqueName="ComboColumn" IsComboBoxEditable="True" DataMemberBinding="{Binding FirstName}" />
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>
    </Grid>
</UserControl>

    