bloxstrap/Bloxstrap/UI/Elements/Menu/Pages/FastFlagEditorPage.xaml

<ui:UiPage x:Class="Bloxstrap.UI.Elements.Menu.Pages.FastFlagEditorPage"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      xmlns:ui="http://schemas.lepo.co/wpfui/2022/xaml"
      xmlns:local="clr-namespace:Bloxstrap.UI.Elements.Menu.Pages"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="FastFlagEditorPage"
      Loaded="Page_Loaded">
    <Grid Margin="0,0,14,14">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        
        <TextBlock Grid.Row="0" Margin="0,0,0,16" Text="Manage your own FastFlags. Press the delete key to delete a selected entry." FontSize="14" Foreground="{DynamicResource TextFillColorSecondaryBrush}" />

        <DataGrid Name="DataGrid" Grid.Row="1" Style="{x:Null}" HeadersVisibility="Column" AutoGenerateColumns="False" CanUserAddRows="False" CanUserDeleteRows="False" CellEditEnding="DataGrid_CellEditEnding">
            <DataGrid.Columns>
                <DataGridCheckBoxColumn Header="Enabled" Binding="{Binding Enabled}" />
                <DataGridTextColumn Header="Name" Binding="{Binding Name}" IsReadOnly="True" />
                <DataGridTextColumn Header="Value" Binding="{Binding Value}" />
            </DataGrid.Columns>
        </DataGrid>

        <StackPanel Grid.Row="2" Margin="0,16,0,0" Orientation="Horizontal">
            <ui:Button Icon="Add28" Content="Add new" Click="AddButton_Click" />
            <ui:Button Icon="Delete48" Content="Delete selected" Click="DeleteButton_Click" Appearance="Danger" Margin="12,0,0,0">
                <ui:Button.Style>
                    <Style TargetType="ui:Button" BasedOn="{StaticResource {x:Type ui:Button}}">
                        <Style.Triggers>
                            <DataTrigger Binding="{Binding ElementName=DataGrid, Path=SelectedItems.Count}" Value="0">
                                <Setter Property="IsEnabled" Value="False" />
                            </DataTrigger>
                        </Style.Triggers>
                    </Style>
                </ui:Button.Style>
            </ui:Button>
        </StackPanel>
    </Grid>
</ui:UiPage>