Code WPF Tic Tac Toe

b1 .. b9 – назви кнопок для перевірки на виграш
Draw() – нічия
Clear() – очистити
((Button)sender).Content = "X";
<Window x:Class="WpfApp7.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:WpfApp7"
        mc:Ignorable="d"
        Title="Tic Tac Toe" Height="450" Width="450">
  <Grid Background="#FF62C8DC">
    <Grid.RowDefinitions>
      <RowDefinition />
      <RowDefinition />
      <RowDefinition />
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
      <ColumnDefinition />
      <ColumnDefinition />
      <ColumnDefinition />
    </Grid.ColumnDefinitions>

    <Button Grid.Row="0" Grid.Column="0" Content="X" FontSize="70" Margin="5,5,5,5" Background="#FFF8FFB5" />
    <Button Grid.Row="0" Grid.Column="1" Content="X" FontSize="70" Margin="5,5,5,5" Background="#FFF8FFB5" />
    <Button Grid.Row="0" Grid.Column="2" Content="X" FontSize="70" Margin="5,5,5,5" Background="#FFF8FFB5" />
    <Button Grid.Row="1" Grid.Column="0" Content="X" FontSize="70" Margin="5,5,5,5" Background="#FFF8FFB5" />
    <Button Grid.Row="1" Grid.Column="1" Content="X" FontSize="70" Margin="5,5,5,5" Background="#FFF8FFB5" />
    <Button Grid.Row="1" Grid.Column="2" Content="X" FontSize="70" Margin="5,5,5,5" Background="#FFF8FFB5" />
    <Button Grid.Row="2" Grid.Column="0" Content="X" FontSize="70" Margin="5,5,5,5" Background="#FFF8FFB5" />
    <Button Grid.Row="2" Grid.Column="1" Content="X" FontSize="70" Margin="5,5,5,5" Background="#FFF8FFB5" />
    <Button Grid.Row="2" Grid.Column="2" Content="X" FontSize="70" Margin="5,5,5,5" Background="#FFF8FFB5" />
  </Grid>
</Window>