Windows iot (c#) - Raspberry PI - I2C

1.我尝试使用Raspberry Pi作为主节点，使用PIC16F1847作为从属。从站向主站发送 50 个字节。但是，我在 C# 编程方面遇到了问题。下来的C#代码不被接受，"y"数组。谁能帮忙？2.这是代码：

    private I2cDevice PicDevice;
    public class StartSpanning
    {
        public string Name { get; set; }
        public int Amount { get; set; }
    }
    public MainPage()
    {
        this.InitializeComponent();
        this.Loaded += MainPage_Loaded;
        initI2c();
    }
    private void MainPage_Loaded(object sender, RoutedEventArgs e)
    {
        LoadChartContents();
    }
    async void initI2c()
    {
        string i2c1 = I2cDevice.GetDeviceSelector();                                // Get a selector string that will return all I2C controllers on the system 
        var devices = await DeviceInformation.FindAllAsync(i2c1);
        var I2Csettings = new I2cConnectionSettings(0x05);                          // Adrress PIC
        I2Csettings.BusSpeed = I2cBusSpeed.StandardMode;                            // 100KHz bus speed 
        PicDevice = await I2cDevice.FromIdAsync(devices[0].Id, I2Csettings);
        byte[] y = new byte[50];
        var result = PicDevice.ReadPartial(y);
    }
    private void LoadChartContents()
    {
        List<StartSpanning> lijst_spanning = new List<StartSpanning>();
        lijst_spanning.Add(new StartSpanning() { Name = "1", Amount = y[0] });
        lijst_spanning.Add(new StartSpanning() { Name = "2", Amount = y[1] });
        lijst_spanning.Add(new StartSpanning() { Name = "3", Amount = y[2] });
        lijst_spanning.Add(new StartSpanning() { Name = "4", Amount = y[3] });
        lijst_spanning.Add(new StartSpanning() { Name = "5", Amount = y[4] });
        lijst_spanning.Add(new StartSpanning() { Name = "6", Amount = y[5] });
        lijst_spanning.Add(new StartSpanning() { Name = "7", Amount = y[6] });