TSCHMI_done/MainWindow.xaml

<Window x:Class="ТСЧМИ.MainWindow"
        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:ТСЧМИ"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Window.Resources>
        <Style TargetType="Button">
            <Setter Property="FontSize" Value="10" />
            <Setter Property="FontFamily" Value="Times New Roman" />
            <Setter Property="Background" Value="Gray" />
        </Style>
    </Window.Resources>
    <Grid ShowGridLines="True">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width ="*" />
            <ColumnDefinition Width ="*" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="3*" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>
        <GridSplitter Grid.Column="1"  Grid.Row="0" ShowsPreview="False" Width="3" HorizontalAlignment="Left" VerticalAlignment="Stretch" />
        <GridSplitter Grid.Row="1" Grid.ColumnSpan="3" Height="3" HorizontalAlignment="Stretch" VerticalAlignment="Top" />
        <Grid Grid.Row="0" Grid.Column="2" ShowGridLines="True">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="*" />
                <RowDefinition Height="2*" />
            </Grid.RowDefinitions>
            
            <GroupBox Header="Настройка даты">
                <StackPanel>
                    <RadioButton x:Name="radioLater" Content="Отложенный старт" MinHeight="30" VerticalAlignment="Center" HorizontalAlignment="Center"/>
                    <RadioButton x:Name="radioNow" Content="Выложить сразу" MinHeight="30" VerticalAlignment="Center" HorizontalAlignment="Center"/>
                    <DatePicker x:Name="dateChoosen" HorizontalAlignment="Center" VerticalAlignment="Top"/>
                </StackPanel>
            </GroupBox>
            <ListView x:Name="listView" Grid.Row="1" d:ItemsSource="{d:SampleData ItemCount=5}">
                <ListView.View>
                    <GridView>
                        <GridViewColumn/>
                    </GridView>
                </ListView.View>
            </ListView>
            <Button x:Name="buttonCreate" Grid.Column="1" Grid.Row="0" Content="Создать видео" Click="buttonCreate_Click"/>
            <Button x:Name="buttonChoose" Grid.Column="1" Content="Выбрать видео" HorizontalAlignment="Center" Grid.Row="1" VerticalAlignment="Top" Click="buttonChoose_Click"/>
            <Border BorderBrush="Black" BorderThickness="1" Grid.Column="1" Grid.Row="1" Margin="0,24,0,0" >
                <Image x:Name="ImageC1" Source="/Images/good.png" />
            </Border>
        </Grid>
        <TextBox x:Name="textBoxTitle" HorizontalAlignment="Left" Margin="115,10,0,0" Grid.Row="1" TextWrapping="Wrap" Text="" VerticalAlignment="Top" MaxLength="30" MinWidth="120" MaxWidth="250" Grid.Column="1"/>
        <TextBlock HorizontalAlignment="Left" Margin="10,10,0,0" Grid.Row="1" TextWrapping="Wrap" Text="Название видео" VerticalAlignment="Top" Grid.Column="1"/>
        <TextBox x:Name="textBoxDescription" HorizontalAlignment="Left" Margin="115,38,0,0" Grid.Row="1" TextWrapping="Wrap" Text="" VerticalAlignment="Top" MaxLength="120" MinWidth="120" MaxWidth="250" Grid.Column="1"/>
        <TextBlock HorizontalAlignment="Left" Margin="10,38,0,0" Grid.Row="1" TextWrapping="Wrap" Text="Описание видео" VerticalAlignment="Top" Grid.Column="1"/>
        <Grid Grid.Row="1" Grid.Column="0">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>
            <Button x:Name="buttonPause" Content="Пауза" Grid.Column="0" Click="Pause_Click"/>
            <Button x:Name="buttonStart" Content="Запуск" Grid.Column="1" Command="Play"/>
            <Button x:Name="buttonRestart" Content="Рестарт" Grid.Column="2" Click="Restart_Click"/>
        </Grid>
        <MediaElement x:Name="media" Source="Videos/nap.mp4" LoadedBehavior="Manual"/>
    </Grid>
</Window>