C#事件声明办法

 public event Action<string>? OnLogMessage;
 public event Action<bool>? OnAutoRunCompleted;

  _modbusClient.OnLogMessage += LogMessage;
 _modbusClient.OnDeviceStatusChanged += OnModbusDeviceStatusChanged;


//------直接调用
  //_plcModbusClient.OnLogMessage += (msg) => LogMessage($"[PLC串口] {msg}");
  //_plcModbusClient.OnDeviceStatusChanged += (addr, online) =>
  //{
  //    LogMessage($"PLC设备 {addr} 状态: {(online ? "在线" : "离线")}");
 // };

 private void LogMessage(string message)
 {
     if (txtLog.InvokeRequired)
     {
         txtLog.Invoke(new Action<string>(LogMessage), message);
         return;
     }
     txtLog.AppendText($"[{DateTime.Now:HH:mm:ss}] {message}\r\n");
     txtLog.ScrollToCaret();

 }



private void OnModbusDeviceStatusChanged(byte address, bool isOnline)
{
    if (InvokeRequired)
    {
        Invoke(new Action(() => OnModbusDeviceStatusChanged(address, isOnline)));
        return;
    }
    LogMessage($"Modbus设备 {address} 状态: {(isOnline ? "在线" : "离线")}");
}