如何在WPF中实现与用户控件的数据绑定?

我对WPF还比较陌生,在让数据绑定按我想要的方式工作时遇到了一些问题。我已经编写了一个用户控件,其中包含一个文本框,我希望将其文本属性绑定到我的用户控件的属性,我希望将其再次绑定到其他对象。

我错过了什么?

XAML

<!-- User Control -->
<TextBox Text="{Binding Path=TheText}" />

<!-- Window -->
<WpfApplication1:SomeControl TheText="{Binding Path=MyStringProp}" />

C.*

// User Control ----

public partial class SomeControl : UserControl
{
    public DependencyProperty TheTextProperty = DependencyProperty
        .Register("TheText", typeof (string), typeof (SomeControl));

    public string TheText
    {
        get
        {
            return (string)GetValue(TheTextProperty);
        }
        set
        {
            SetValue(TheTextProperty, value);
        }
    }

    public SomeControl()
    {
        InitializeComponent();
        DataContext = this;
    }
}

// Window ----

public partial class Window1 : Window
{
    private readonly MyClass _myClass;

    public Window1()
    {
        InitializeComponent();

        _myClass = new MyClass();
        _myClass.MyStringProp = "Hallo Welt";

        DataContext = _myClass;
    }
}

public class MyClass// : DependencyObject
{
//  public static DependencyProperty MyStringPropProperty = DependencyProperty
//      .Register("MyStringProp", typeof (string), typeof (MyClass));

    public string MyStringProp { get; set; }
//  {
//      get { return (string)GetValue(MyStringPropProperty); }
//      set { SetValue(MyStringPropProperty, value); }
//  }
}

最好的问候
奥利弗哈纳皮

PS:我已经尝试在我的用户控件上实现inotifyPropertyChanged接口,但它没有帮助。