<Window x:Class="WpfApplication2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        
        <TextBlock Name="textBlock1" FontWeight="Bold" FontSize="24" Width="177" TextAlignment="Center" VerticalAlignment="Center">
            <Run Text="平均值:"/>
            <Run Text="{Binding Avg}"/>
        </TextBlock>
    </Grid>
</Window>
