我正在使用.NET MAUI构建Windows桌面应用程序。该应用程序使用SerialPort连接到LoRa扫描仪。扫描仪扫描LoRa网络，并每秒从虚拟LoRa发射器获取数据约8次。扫描仪读取传输的数据，其中包含网络名称，信号强度，经度，纬度等。在我的UI中，我有一个专门用于网络名称的部分，我一直试图用SerialPort缓冲区数据中的网络名称填充列表。
我面临的问题是，网络名称只显示一次或有时根本不出现，而事实上，当我运行扫描时，它必须显示约8次。在我的情况下，现在它是一个具有相同网络名称的网络。但是，如果我有多个虚拟LoRa发射器，只有一个或没有将显示在UI中。
我目前正在UI后面的代码中建立连接（计划在我让它工作时将其移动到一个单独的文件中）。我还使用MainThread.BeingInvokeOnMainThread来显示xaml列表中的名称（不工作）。以下是我在myPage.xaml.cs中所做的：

namespace Scanner_MAUI.Pages;

public partial class RealTimeData : ContentPage
{
   
    private SerialPort serialPort;

    public RealTimeData()
    {
        InitializeComponent();
        BindingContext = this;
        NetworkNames = new ObservableCollection<string>();
        //NetworkListView.ItemsSource = NetworkNames;

    }
    class ScannerData
    {
        public string Name { get; set; }
        //...
    }
    private void StartMenuItem_Clicked(object sender, EventArgs e)
    {
        // TODO: Connect to the LoRa scanner and start scanning
        ConnectToScanner();
    }

public void ConnectToScanner()
    {
        // Clear the NetworkNames list before connecting to the scanner
        //NetworkNames.Clear();
        try
        {
            serialPort = new SerialPort("COMx", baudrate);

            serialPort.Open();
            Debug.WriteLine("Serial Port conn created");
            Debug.WriteLine("Serial Port Is Open: " + serialPort.IsOpen);

            var data = new byte[] { (byte)'1', 13 };
            serialPort.Write(data, 0, data.Length);

            // TODO: Handle the scanner's output and display the information in your app
            serialPort.DataReceived += SerialPort_DataReceived;

            //Debug.WriteLine("test");
        }
        catch (Exception ex)
        {
            // Handle the exception
            Debug.WriteLine($"Failed to connect to the scanner: {ex.Message}");
        }
    }

public void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
        //NetworkNames = new ObservableCollection<string>();
        //NetworkNames.Clear();
        
        try
        {
            while (serialPort.BytesToRead > 0)
            {
            string DataIn = serialPort.ReadLine();
                //Debug.WriteLine("Data received from the scanner: " + DataIn);

                // Process the received data and extract the fields
                //ScannerData scannerData = ProcessReceivedData(DataIn);

                //Task.Delay(1000).Wait();
                foreach (string name in NetworkNames)
                {
                    Debug.WriteLine($"Name: {name}");
                }
                //ProcessReceivedData(DataIn);
                MainThread.BeginInvokeOnMainThread(() =>
                {
                    ProcessReceivedData(DataIn);
                    NetworkListView.ItemsSource = NetworkNames;
                });
            }
        }
        catch (OperationCanceledException)
        {
            // Handle the cancellation if needed
            Debug.WriteLine("Reading data from the scanner was canceled.");
        }
        catch (Exception ex)
        {
            // Handle other exceptions
            Debug.WriteLine($"Failed to read data from the scanner: {ex.Message}");
        }
        
    }
    
    public ObservableCollection<string> NetworkNames { get; set; } = new ObservableCollection<string>();

    private ScannerData ProcessReceivedData(string data)
    {
        ScannerData scannerData = new ScannerData();

        // Parse and extract relevant information from the data string
        string[] fields = data.Split(new string[] { ", " }, StringSplitOptions.None);

        Debug.WriteLine($"Received data fields count: {fields.Length}");
        //Debug.WriteLine($"Received data fields: {string.Join(", ", fields)}");

        if (fields.Length >= 8)
        {
            scannerData.Message = fields[0].Split(':')[1].Trim();
            string input = fields[1];
            string startMarker = "b'";
            string endMarker = "'";

            int startIndex = input.IndexOf(startMarker) + startMarker.Length;
            int endIndex = input.IndexOf(endMarker, startIndex);

            if (startIndex >= 0 && endIndex >= 0)
            {
                string extractedString = input.Substring(startIndex, endIndex - startIndex);
                scannerData.Name = extractedString;

                // Add non-null and non-empty names to the collection
                //if (!string.IsNullOrEmpty(scannerData.Name))
                //{
                    NetworkNames.Add(extractedString);
                //}
                //NetworkNames.Add(scannerData.Name); // Add network name to the list
            }
            ....More code 
        }
        else
        {
            Debug.WriteLine("Insufficient fields in the data string.");
        }

        return scannerData;
    }

    private double? ParseNullableDouble(string value)
    {
        if (double.TryParse(value, out double result))
            return result;

        return null;
    }

最后是xaml文件中的列表：

<ListView x:Name="NetworkListView" ItemsSource="{Binding NetworkNames}">
  <ListView.ItemTemplate>
     <DataTemplate>
        <TextCell Text="{Binding}" />
     </DataTemplate>
  </ListView.ItemTemplate>
</ListView>

型
下面是我在下面的图像中得到的结果：x1c 0d1x在本图中，网络名称应显示在左列中。在控制台中，名称显示得很好。
由于某些原因，有时一个名字显示在左栏中。
我应该采取什么方法，使它能够显示网络名称，而扫描？我做错了什么！
请注意，我是初学者。非常感谢您的帮助！