通過代碼從XAML獲取綁定的ElementName

Question

這是我的項目中的XAML代碼段：

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

在我的代碼中：

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

我的問題是：是否可以通過代碼獲取此TextBox的ElementName？

編輯：添加到此問題以使其四舍五入。
在MultiBinding方案中如何做到這一點？

 <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

BindingOperations.GetBinding(...)將為您提供Binding ，而ElementName是Binding類的屬性。

Answer 2

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

Answer 3

你可以這樣做，

  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;
        }

Answer 4

為了在普通綁定中檢索元素名稱：

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

在多綁定方案中：

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