C＃WPF代码在创建堆栈面板时停止

Question

我正在尝试添加一个功能，当添加网络表中的新键值对时，它将添加带有新数据的新堆栈面板。但是，在运行代码时，使用断点，代码只是静默停止，没有崩溃或任何事情，只是停止。代码在创建StackPanel对象时停止。

public void ValueChanged(ITable source, string key, Value value, NotifyFlags flags)
    {
        switch (key)
        {
            case @"AUTON_OPTIONS":
                updateAutonOptions(value.GetStringArray());
                break;
            case @"POSITION_OPTIONS":
                updatePositionOptions(value.GetStringArray());
                break;
            case @"AUTON_FOUND":
                updateAutonFound(value.GetString());
                break;
            default:
                StackPanel formItem = null;
                RobotData.Dispatcher.Invoke(() => 
                {
                    formItem = (StackPanel)RobotData.FindName(key);
                });
                if(formItem == null)
                {
                    StackPanel stackPanel = new StackPanel
                    {
                        Name = key,
                        Orientation = Orientation.Horizontal
                    }; //new stackpanel for new data type

                    Label label = new Label
                    {
                        Content = key
                    }; //new label for key name
                    TextBox textBox = new TextBox
                    {
                        IsEnabled = false,
                        Text = value.GetString()
                    }; //new textbox for value data

                    stackPanel.Children.Add(label); //add label to new stackpanel
                    stackPanel.Children.Add(textBox); //add textbox to new stackpanel
                    RobotData.Dispatcher.Invoke(() =>
                    {
                        RobotData.Children.Add(stackPanel);//add new stackpanel to RobotData stackpanel (declared in xaml) 
                    });

                }
                else
                {
                    foreach(Object o in ((StackPanel)formItem).Children)
                    {
                        if(o is TextBox)
                        {
                            ((TextBox)o).Text = value.GetString();
                            break;
                        }
                    }
                }
                break;

        }
    }

Answer 1

感谢朋友以及上述两位评论者的帮助，我解决了这个问题！谢谢你俩！这是有效的代码：

public void ValueChanged(ITable source, string key, Value value, NotifyFlags flags)
    {
        switch (key)
        {
            case @"AUTON_OPTIONS":
                updateAutonOptions(value.GetStringArray());
                break;
            case @"POSITION_OPTIONS":
                updatePositionOptions(value.GetStringArray());
                break;
            case @"AUTON_FOUND":
                updateAutonFound(value.GetString());
                break;
            default:
                //StackPanel formItem = null;
                RobotData.Dispatcher.Invoke(() =>
                {
                    var formItem = LogicalTreeHelper.FindLogicalNode(RobotData, key);
                    //});
                    if (formItem == null)
                    {

                        //Dispatcher.Invoke(() =>
                        //{
                        StackPanel stackPanel = new StackPanel
                        {
                            Name = key,
                            Orientation = Orientation.Horizontal
                        }; //new stackpanel for new data type

                        Label label = new Label
                        {
                            Content = key
                        }; //new label for key name
                        TextBox textBox = new TextBox
                        {
                            IsReadOnly = true,
                            Text = value.GetObjectValue().ToString()
                        }; //new textbox for value data

                        stackPanel.Children.Add(label); //add label to new stackpanel
                        stackPanel.Children.Add(textBox); //add textbox to new stackpanel
                        RobotData.Children.Add(stackPanel);//add new stackpanel to RobotData stackpanel (declared in xaml) 
                                                           //});

                    }

                   else
                   {
                       foreach(Object o in ((StackPanel)formItem).Children)
                       {
                           if(o is TextBox)
                           {
                               ((TextBox)o).Text = value.GetString();
                               break;
                           }
                       }
                   }
                });
                break;

        }
    }