UWP设置单选按钮。代码隐藏中的IsChecked导致奇怪/意外行为

我的FlipView中有不同的ViewModels。项目来源。此视图模型包含一个根网格,其中包含一些包含信息的堆栈面板和一些包含单选按钮的堆栈面板。

jfyi:

我的设计模式是mvvm,我的FlipView有一个模板选择器(根据它在ItemsSource中获得的viewmodel类型选择模板)。

因此,我从数据库中获取所需的所有信息,实例化所有ViewModels,每个ViewModel实例将运行以下代码(非常简单的抽象)。

#region Radiobuttons
        RadioButton rb1 = new RadioButton() { Content = "yes" };
        RadioButton rb2 = new RadioButton() { Content = "no" };
        RadioButton rb3 = new RadioButton() { Content = "yes" };
        RadioButton rb4 = new RadioButton() { Content = "no" };
        RadioButton rb5 = new RadioButton() { Content = "yes" };
        RadioButton rb6 = new RadioButton() { Content = "no" };

        StackPanel BindableRadioGroup1 = new StackPanel();
        BindableRadioGroup1.Children.Add(rb1);
        BindableRadioGroup1.Children.Add(rb2);
        StackPanel BindableRadioGroup2 = new StackPanel();
        BindableRadioGroup2.Children.Add(rb3);
        BindableRadioGroup2.Children.Add(rb4);
        StackPanel BindableRadioGroup3 = new StackPanel();
        BindableRadioGroup3.Children.Add(rb5);
        BindableRadioGroup3.Children.Add(rb6);

        Grid RootGrid = new Grid();

        Grid.SetRow(BindableRadioGroup1, 0);
        Grid.SetRow(BindableRadioGroup2, 1);
        Grid.SetRow(BindableRadioGroup3, 2);

        RootGrid.Children.Add(BindableRadioGroup1);
        RootGrid.Children.Add(BindableRadioGroup2);
        RootGrid.Children.Add(BindableRadioGroup3);


        foreach (StackPanel sp in RootGrid.Children) {

            foreach (RadioButton rb in sp.Children) {

                if (rb.Content.ToString() == "yes") {
                    rb.IsChecked = true;
                }

            }
        }
        #endregion

        #region CheckBoxes
        //CheckBox rb1 = new CheckBox() { Content = "yes" };
        //CheckBox rb2 = new CheckBox() { Content = "no" };
        //CheckBox rb3 = new CheckBox() { Content = "yes" };
        //CheckBox rb4 = new CheckBox() { Content = "no" };
        //CheckBox rb5 = new CheckBox() { Content = "yes" };
        //CheckBox rb6 = new CheckBox() { Content = "no" };

        //StackPanel BindableRadioGroup1 = new StackPanel();
        //BindableRadioGroup1.Children.Add(rb1);
        //BindableRadioGroup1.Children.Add(rb2);
        //StackPanel BindableRadioGroup2 = new StackPanel();
        //BindableRadioGroup2.Children.Add(rb3);
        //BindableRadioGroup2.Children.Add(rb4);
        //StackPanel BindableRadioGroup3 = new StackPanel();
        //BindableRadioGroup3.Children.Add(rb5);
        //BindableRadioGroup3.Children.Add(rb6);

        //Grid RootGrid = new Grid();

        //Grid.SetRow(BindableRadioGroup1, 0);
        //Grid.SetRow(BindableRadioGroup2, 1);
        //Grid.SetRow(BindableRadioGroup3, 2);

        //RootGrid.Children.Add(BindableRadioGroup1);
        //RootGrid.Children.Add(BindableRadioGroup2);
        //RootGrid.Children.Add(BindableRadioGroup3);


        //foreach (StackPanel sp in RootGrid.Children) {

        //    foreach (CheckBox rb in sp.Children) {

        //        if (rb.Content.ToString() == "yes") {
        //            rb.IsChecked = true;
        //        }

        //    }
        //}
        #endregion

如果是单选按钮:

只有最后一个单选按钮将保留其值。每一个 Radiobutton.IsChecked 设置为 true before设置为false,下一个设置为true时。 无论FlipView中添加了多少页面。只有设置为true的最后一页的最后一个单选按钮才保留其值。。。

我在一个全新的WPF项目中尝试了该代码。。。运行正常。。。

我在一个全新的UWP项目中尝试了该代码。。。并获得所描述的行为。

我已将单选按钮更改为复选框(仅在示例代码中)。。。在新的UWP和WPF项目上运行良好。

我不能在我的官方项目中将我的单选按钮更改为复选框,因为我必须更改几乎所有内容,而且解决方案非常大和复杂。

顺便说一句: 即使我通过for循环遍历根网格,如下所示:

// For every Child-Element of RootGrid
                        for (int z = 0; z < RootGrid.Children.Count; z++) {

                            // Check, if the child-elements type is "BindableRadioGroup"
                            if ((TheQuestions[i].Antwort != null) && (RootGrid.Children[z].GetType() == typeof(BindableRadioGroup))) {

                                // If so, iterate though all Child-Radiobuttons
                                for (int x = 0; x < (RootGrid.Children[z] as BindableRadioGroup).rads.Count; x++) {

                                    // and set the Event
                                    (RootGrid.Children[z] as BindableRadioGroup).rads[x].Checked += new RoutedEventHandler(Rb_Checked);

                                    // aditionally check if the Radiobuttons value (if the radiobutton says "yes" or "no") equals the questions answer
                                    if ((RootGrid.Children[z] as BindableRadioGroup).rads[x].Content.ToString() == TheQuestions[i].Antwort) {

                                        // and set the Radiobutton as checked
                                        (RootGrid.Children[z] as BindableRadioGroup).rads[x].IsChecked = true;
                                    }
                                }
                            }
                        }

单选按钮的行为没有改变。。。

有人有主意吗?

非常感谢。