Met_F/Met_Fam/WindowVideo.xaml

<Window x:Class="Met_Fam.WindowVideo"
        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:Met_Fam"
         mc:Ignorable="d"
Title="Metal Family" WindowState="Maximized">
    <Window.Resources>
        <Style TargetType="TextBlock" x:Key="zagolovok">
            <Setter Property="FontSize" Value="80"/>
            <Setter Property="HorizontalAlignment" Value="Center"/>
            <Setter Property="VerticalAlignment" Value="Center"/>
            <Setter Property="FontFamily" Value="Rockwell Extra Bold"/>

        </Style>
        <Style TargetType="TextBlock" x:Key="reklama">
            <Setter Property="FontSize" Value="30" />
            <Setter Property="FontFamily" Value="Rockwell Extra Bold"/>
            <Setter Property="HorizontalAlignment" Value="Center"/>
        </Style>
        <DataTemplate x:Key="AllGoods">
            <StackPanel Orientation="Vertical" Margin="400,10,0,10">
                <StackPanel Orientation="Horizontal" Uid="{Binding ID_Video}">
                    <Border BorderBrush="#FF6C73E6" BorderThickness="1" Width="400" Height="300" Margin="350, 0, 20,0" >
                        <MediaElement x:Name="video" Source="{Binding Video}" LoadedBehavior="Play" Stretch="Fill"></MediaElement>
                    </Border>
                    <!--<Border Grid.Row="1" BorderBrush="DarkGray" BorderThickness="1" CornerRadius="2">
<Rectangle VerticalAlignment="Stretch" Stretch="Uniform">
<Rectangle.Fill>
<VisualBrush Visual="{Binding ElementName=video}">
<VisualBrush.RelativeTransform>
<ScaleTransform ScaleY="-1" CenterY="0.5"></ScaleTransform>
</VisualBrush.RelativeTransform>
</VisualBrush>
</Rectangle.Fill>
<Rectangle.OpacityMask>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Color="Black" Offset="0"></GradientStop>
<GradientStop Color="Transparent" Offset="0.6"></GradientStop>
</LinearGradientBrush>
</Rectangle.OpacityMask>
</Rectangle>
</Rectangle>
</Border>-->
                </StackPanel>
                <StackPanel Height="3" Background="#FFA0A5F3" Margin="330,10,0,10"></StackPanel>
            </StackPanel>
        </DataTemplate>
    </Window.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="100"/>
            <RowDefinition Height="100"/>
            <RowDefinition/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>


            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        <DockPanel LastChildFill="True">
            <TextBlock Text="Metal Family" Style="{StaticResource zagolovok}" />
        </DockPanel>
        <DockPanel Grid.Row="1" Background="#FFA0A5F3">
            <DockPanel HorizontalAlignment="Center">
                <Button Content="Профиль" Click="Button_Click_1" Margin="0,0,10,0" Height="50" Width="170" FontFamily="Rockwell Extra Bold" FontSize="25"></Button>
                <Button Click="Button_Click" Content="Магазин" Margin="0,0,10,0" Height="50" Width="170" FontFamily="Rockwell Extra Bold" FontSize="25"></Button>
            </DockPanel>
        </DockPanel>
        <ListView x:Name="LBAllGoods" Grid.Row="2" ItemTemplate="{StaticResource AllGoods}" ></ListView>
    </Grid>
</Window>