يوجد خطأ في الكود

<Page

    x:Class="App.MainPage"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    xmlns:local="using:App"

    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

    mc:Ignorable="d">

 

    <Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">

        <Button Content="Cloce" HorizontalAlignment="Left" Height="92" Margin="946,614,0,0" VerticalAlignment="Top" Width="338" FontSize="48"/>

        <Button Content="Clear" HorizontalAlignment="Left" Height="92" Margin="352,614,0,0" VerticalAlignment="Top" Width="338" FontSize="48"/>

        <ProgressBar x:Name="prgLevel" HorizontalAlignment="Left" Height="20" Margin="46,100,0,0" VerticalAlignment="Top" Width="1288"/>

        <TextBlock x:Name="txtSpoken" HorizontalAlignment="Left" Height="433" Margin="46,153,0,0" TextWrapping="Wrap" Text="TextBlock" VerticalAlignment="Top" Width="1288" FontSize="100"/>

 

    </Grid>

</Page>