RelativeSource rs = new RelativeSource(RelativeSourceMode.FindAncestor);

//设定为离自己控件最近的第一层父控件

 rs.AncestorLevel = ;

//设定父控件为Gird类型

 rs.AncestorType = typeof(Grid);

//绑定源为Grid的名称

 Binding binding = new Binding("Name") { RelativeSource=rs};

//将绑定的源放在文本显示内容中

 this.textBox1.SetBinding(TextBox.TextProperty, binding);  

<TextBox x:Name="textBox1" FontSize="24" Margin="10" Text="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type Grid},AncestorLevel=1},Path=Name}"/>