如何从父 class 中的名称动态设置属性？

Question

如何从父 class 动态地将每个 AlarmModel 的“名称”属性设置为 model（即 HardwareFault）的名称？

public class NotificationModel
{
    public string UnrelatedProperty { get; set; }  // any solution should ignore other properties.

    public AlarmModel HardwareFault{ get; set; }

    public AlarmModel TimeoutFault { get; set; }

    public AlarmModel GenericFault { get; set; }
}

public class AlarmModel
{
    public string Name { get; set; }

    public bool isActive { get; set; }

    public bool isEnabled { get; set; }

    public bool isSilenced { get; set; }
}

Answer 1

您应该将属性“名称”移动到父 class。 并尝试将其扩展/继承给子 class。

Answer 2

如果我理解正确，您想将每个AlarmModel的Name属性设置为父NotificationModel中的属性名称吗？

如果是这种情况，您可以执行以下操作：

public class NotificationModel
{
    private AlarmModel _hardwareFault;

    private AlarmModel _timeoutFault;

    private AlarmModel _genericFault;

    public string UnrelatedProperty { get; set; }  // any solution should ignore other properties.

    public AlarmModel HardwareFault
    { 
        get => _hardwareFault; 
        set
        {
            _hardwareFault = value;
            SetName(value);
        }
    }

    public AlarmModel TimeoutFault 
    {
        get => _timeoutFault; 
        set
        {
            _timeoutFault= value;
            SetName(value);
        }
    }

    public AlarmModel GenericFault 
    {
        get => _genericFault; 
        set
        {
            _genericFault= value;
            SetName(value);
        }
    }

    private SetName(AlarmModel model, [CallerMemberName] string propertyName = null)
    {
        model.Name = propertyName;
    }
}

Answer 3

如果您已经使用已经初始化的HardwareFault 、 TimeoutFault 、 GenericFault属性初始化了NotificationModel ，则可以使用此示例：

var notificationModel = new NotificationModel()
{
    HardwareFault = new AlarmModel(),
    GenericFault = new AlarmModel(),
    TimeoutFault = new AlarmModel()
};

notificationModel?.GetType().GetProperties().Where(p => p.PropertyType.Name == "AlarmModel") // Or p.PropertyType == typeof(AlarmModel)
                                            .ToList().ForEach(alarmModelProperty =>
{
    // Get AlarmModel property instance
    var alarmModelInstance = alarmModelProperty.GetValue(notificationModel);
    // Get Name property
    var nameProperty = alarmModelIntance?.GetType().GetProperty("Name");
    // Set Name property value with name of AlarmModel property
    nameProperty?.SetValue(alarmModelInstance, alarmModelProperty.Name);
});

如果您已经初始化NotificationModel ，但没有初始化HardwareFault 、 TimeoutFault 、 GenericFault属性，则可以使用此示例：

var notificationModel = new NotificationModel();

notificationModel?.GetType().GetProperties().Where(p => p.PropertyType.Name == "AlarmModel") // Or p.PropertyType == typeof(AlarmModel)
                                            .ToList().ForEach(alarmModelProperty =>
{
    // Initialize new AlarmModel 
    var alarmModelInstance = Activator.CreateInstance(alarmModelProperty.PropertyType);
    // Get Name property of AlarmModel
    var nameProperty = alarmModelInstance.GetType().GetProperty("Name");
    // Set Name property of AlarmModel
    nameProperty?.SetValue(alarmModelInstance, alarmModelProperty.Name);
    // Set AlarmModel property of NotificationModel
    alarmModelProperty.SetValue(notificationModel, alarmModelInstance);
});

如果您需要使用反射进行完全初始化，可以使用以下示例：

var notificationModelType = Assembly.GetExecutingAssembly().GetTypes().FirstOrDefault(type => type.Name == "NotificationModel"); // Or type == typeof(NotificationModel)
if (notificationModelType is null) // No NotificationModel found in current assembly
    return;

// Initializing NotificationModel
var notificationModel = Activator.CreateInstance(notificationModelType);

notificationModel?.GetType().GetProperties().Where(p => p.PropertyType.Name == "AlarmModel") // Or p.PropertyType == typeof(AlarmModel)
                                            .ToList().ForEach(alarmModelProperty =>
{
    // Initialize new AlarmModel 
    var alarmModelInstance = Activator.CreateInstance(alarmModelProperty.PropertyType);
    // Get Name property of AlarmModel
    var nameProperty = alarmModelInstance.GetType().GetProperty("Name");
    // Set Name property of AlarmModel
    nameProperty?.SetValue(alarmModelInstance, alarmModelProperty.Name);
    // Set AlarmModel property of NotificationModel
    alarmModelProperty.SetValue(notificationModel, alarmModelInstance);
});

如果NotificationModel声明不在当前程序集中（因此它不会在Assembly.GetExecutingAssembly().GetTypes()中） - 您可以在AppDomain.CurrentDomain中搜索所有已加载的程序集：

var notificationModelType = AppDomain.CurrentDomain.GetAssemblies()
                                                   .SelectMany(assembly => assembly.GetTypes())
                                                   .FirstOrDefault(type => type.Name == "NotificationModel");