Flow.Launcher/Flow.Launcher/SelectFileManagerWindow.xaml

<Window x:Class="Flow.Launcher.SelectFileManagerWindow"
        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:Flow.Launcher"
        mc:Ignorable="d"
        WindowStartupLocation="CenterScreen"
        Title="SelectFileManagerWindow" Height="450" Width="500" ResizeMode="NoResize" Background="#f3f3f3">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition />
            <RowDefinition />
            <RowDefinition Height="80"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition />
        </Grid.ColumnDefinitions>
        <StackPanel Grid.Row="0" VerticalAlignment="Center">
            <TextBlock Grid.Column="0" FontFamily="/Resources/#Segoe Fluent Icons" FontSize="40"  TextAlignment="Center"
                               Margin="0 0 0 0">
                        &#xe8d0;
            </TextBlock>
        </StackPanel>

        <Border Background="#ffffff" Grid.Row="1" BorderBrush="#cecece" BorderThickness="1" Margin="14 0 14 0" Padding="0 14 0 0" CornerRadius="5">
            <StackPanel Orientation="Vertical" >

                <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Grid.Row="1">
                    <TextBlock FontSize="14" Grid.Column="1" VerticalAlignment="Center"
                       HorizontalAlignment="Left" Text="{DynamicResource currentPriority}" />
                    <TextBlock x:Name="OldPriority" Grid.Row="0" Grid.Column="1" Margin="14 0 10 0" FontSize="14"
                       VerticalAlignment="Center" HorizontalAlignment="Left" FontWeight="Bold" />
                </StackPanel>

                <StackPanel Orientation="Horizontal" Grid.Column="1" HorizontalAlignment="Center">
                    <TextBlock FontSize="14" VerticalAlignment="Center"
                       HorizontalAlignment="Right" Text="{DynamicResource newPriority}" />
                    <TextBox x:Name="tbAction" Margin="14 10 15 10" Width="105" VerticalAlignment="Center" HorizontalAlignment="Left" />
                </StackPanel>

            </StackPanel>
        </Border>
        <StackPanel Grid.Row="2" VerticalAlignment="Center">
            <TextBlock  Foreground="Gray"
                   Text="{DynamicResource priority_tips}" TextWrapping="WrapWithOverflow" TextAlignment="Center"
                   Margin="20,0,20,0"/>
        </StackPanel>
        <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Grid.Row="3" Grid.Column="1">
            <Button x:Name="btnCancel" Click="BtnCancel_OnClick" Margin="0 0 10 0" Width="80" Height="30"
                    Content="{DynamicResource cancel}" />
            <Button x:Name="btnDone" Margin="10 0 0 0" Width="80" Height="30" Click="btnDone_OnClick">
                <TextBlock x:Name="lblAdd" Text="{DynamicResource done}" />
            </Button>
        </StackPanel>
    </Grid>
</Window>