关于根本数据成员变量与控件的绑定

<Window x:Class="wpfdemo.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" Loaded="Window_Loaded">

    <Grid Name="grid1" >

        <TextBlock   Name="txt1"  Text="{Binding}" Width="150" Height="30"  />

    </Grid>


 public partial class MainWindow : Window

    {

        private string name;

        public MainWindow()

        {

            InitializeComponent();

        }


        private void Window_Loaded(object sender, RoutedEventArgs e)

        {

            name = "Button";

            grid1.DataContext = name;

        }

    }

</Window>