Question

我有一个继承自EventSource的类：

[EventSource(Name = "MyEventSource")]
public sealed class ExceptionHundler : EventSource
{
    public static ExceptionHundler Log = new ExceptionHundler();
    [NonEvent]
    public void WriteLog(Exception exception)
    {
        UnhandledException(exception.Message);
    }

    [Event(601, Channel = EventChannel.Admin, Message = "Unhandled exception occurred. Details: {0}", Keywords = EventKeywords.None, Level = EventLevel.Critical)]
    private void UnhandledException(string exceptionMsg)
    {
        WriteEvent(601, exceptionMsg, Environment.MachineName);
    }
}

如您所见，我正在属性Event（其601）中设置事件ID。现在，我想创建枚举并使用它代替事件ID：

 enum EventType
{
    AppCrashed
}

和事件属性：

 [Event(EventType.AppCrashed, Channel = EventChannel.Admin, Message = "Unhandled exception occurred. Details: {0}", Keywords = EventKeywords.None, Level = EventLevel.Critical)]

有什么办法吗？

Answer 1

遵循以下要求

[Event((int)EventType.AppCrashed, Channel = EventChannel.Admin, Message = "Unhandled exception occurred. Details: {0}", Keywords = EventKeywords.None, Level = EventLevel.Critical)]
private void UnhandledException(string exceptionMsg)
{
  WriteEvent(601, exceptionMsg, Environment.MachineName);
}

不要忘记在声明期间分配Enum值。

enum EventType
{
 AppCrashed = 601
}

Answer 2

您可以使用带有公共常量的静态类：

public static class EventType
{
    public const int AppCrashed = 601;
}

并非完全是您想要的enum解决方案，但您不想stated每次都强制转换枚举值。用法大致相同：

[Event(EventType.AppCrashed, Channel = EventChannel.Admin, Message = "Unhandled exception occurred. Details: {0}", Keywords = EventKeywords.None, Level = EventLevel.Critical)]
private void UnhandledException(string exceptionMsg)
{
    WriteEvent(EventType.AppCrashed, exceptionMsg, Environment.MachineName);
}

如何用枚举替换事件ID？

2 个答案: