Изменение цвета элемента из другой формы - C# WPF - Ответ 8476043

using System.Windows;
using System.Windows.Media;
 
namespace shema01
{
    /// <summary>
    /// Логика взаимодействия для MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        COM_port comm = new COM_port();
        public MainWindow()
        {
            InitializeComponent();
            comm.DataReceived += serialPort1_DataReceived; 
         }
         .............................................
         .............................................  
              
        public void serialPort1_DataReceived(object sender, DataReceivedEventArgs e)
        {
            if (e.Responce.Contains("MVT1"))
            {
                T1.Fill = Brushes.Green;
            }
        }
        ..............................................
        ..............................................   
        }

class COM_port
{
    SerialPort serialPort1 = new SerialPort();
    serialPort1.DataReceived += new SerialDataReceivedEventHandler(serialPort1_DataReceived);
 
        ...................................................
        ...................................................
 
    public void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            Thread.Sleep(100);
            string responce = serialPort1.ReadExisting();
            serialPort1.DiscardInBuffer();
            RaiseDataReceived(responce);
        }
        public event  EventHandler<DataReceivedEventArgs> DataReceived;
        public void RaiseDataReceived(string responce)
        {
            var handler = DataReceived;
            if (handler != null)
                handler(this, new DataReceivedEventArgs(responce));
        }
 
    }
    public class DataReceivedEventArgs : EventArgs
    {
        public string Responce { get; private set; }
 
        public DataReceivedEventArgs(string responce)
        {
            Responce = responce;
        }

T1.Fill = Brushes.Green;