获得通过代码从XAML绑定的ElementName

Question

这是我的项目的XAML片段：

<TextBox x:Name="txt_Time1" LostFocus="TextBox_LoseFocus"> 
    <TextBox.Text> 
    <Binding Converter="{StaticResource timezoneconverter}" 
    ElementName="cmb_TZ1" Path="SelectedValue"/> 
    </TextBox.Text> 
</TextBox> 

在我的代码在这里：

 private void TextBox_LoseFocus(object Sender, EventArgs e) 
     { 
     var txtBox = Sender as TextBox; 

我的问题是：是否有可能通过代码获取此TextBox的ElementName？

编辑：添加到此问题，以使其四舍五入。
这怎么能在MultiBinding方案中完成？

<TextBox x:Name="txt_Time1" LostFocus="TextBox_LostFocus" > 
      <TextBox.Text> 
       <MultiBinding Converter="{StaticResource timezoneconverter}"> 
       <Binding ElementName="cmb_TZ1" Path="SelectedValue"/> 
       <Binding RelativeSource="{RelativeSource Self}" Path="Text"/> 
       </MultiBinding> 
      </TextBox.Text> 
     </TextBox> 

Answer 1

对于检索元素名称以纯绑定：

BindingExpression bindingExpression = 
    txtBox.GetBindingExpression(TextBox.TextProperty); 
    Binding parentBinding = bindingExpression.ParentBinding; 
    String elementName = parentBinding.ElementName; 

在多绑定方案：

MultiBindingExpression multiBindingExpression = BindingOperations.GetMultiBindingExpression(txtBox, TextBox.TextProperty); 
Binding parentBinding = ((BindingExpression)multiBindingExpression.BindingExpressions[0]).ParentBinding; 
String elementName = parentBinding.ElementName; 

Answer 2

BindingOperations.GetBinding(...)会给你Binding，并ElementName是Binding类的属性。

Answer 3

BindingExpression bindingExpression = textBox1.GetBindingExpression（TextBox.TextProperty）; 绑定parentBinding = bindingExpression.ParentBinding;

Answer 4

你可以做到这一点，

private void txt_Time_LostFocus(object sender, RoutedEventArgs e) 
     { 
      var txtBox = sender as TextBox; 
      Binding myBinding = BindingOperations.GetBinding(txt_Time, TextBox.TextProperty); 
      var elementName = myBinding.ElementName; 
     }