'Declaration
<EventMetricValueAttribute("TraceId", SummaryFunction.Count, "", Caption="Trace Id", Description="The W3C Id of the Request Id if present")> Public Property TraceId As String
[EventMetricValue("TraceId", SummaryFunction.Count, "", Caption="Trace Id", Description="The W3C Id of the Request Id if present")] public string TraceId {get; set;}