EventAttribute(Int32) Constructor

Referencia

Definición

Espacio de nombres:: System.Diagnostics.Tracing

Ensamblado:: System.Diagnostics.Tracing.dll

Ensamblado:: mscorlib.dll

Ensamblado:: netstandard.dll

Source:: EventSource.cs

Source:: EventSource.cs

Source:: EventSource.cs

Importante

Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.

Inicializa una nueva instancia de EventAttribute con el identificador de eventos especificado.

public:
 EventAttribute(int eventId);

public EventAttribute (int eventId);

new System.Diagnostics.Tracing.EventAttribute : int -> System.Diagnostics.Tracing.EventAttribute

Public Sub New (eventId As Integer)

Parámetros

eventId: Int32

Identificador de eventos para el evento.

Ejemplos

En el ejemplo siguiente se muestra cómo usar el EventAttribute constructor para especificar eventos. Este ejemplo de código es parte de un ejemplo más grande proporcionado para la clase EventSource.

using System;
using System.Diagnostics.Tracing;

namespace Demo2
{
    enum MyColor { Red, Yellow, Blue };

    [EventSource(Name = "MyCompany")]
    sealed class MyCompanyEventSource : EventSource
    {
        public static class Keywords
        {
            public const EventKeywords Page = (EventKeywords)1;
            public const EventKeywords DataBase = (EventKeywords)2;
            public const EventKeywords Diagnostic = (EventKeywords)4;
            public const EventKeywords Perf = (EventKeywords)8;
        }

        public static class Tasks
        {
            public const EventTask Page = (EventTask)1;
            public const EventTask DBQuery = (EventTask)2;
        }

        [Event(1, Message = "Application Failure: {0}", Level = EventLevel.Error, Keywords = Keywords.Diagnostic)]
        public void Failure(string message) { WriteEvent(1, message); }

        [Event(2, Message = "Starting up.", Keywords = Keywords.Perf, Level = EventLevel.Informational)]
        public void Startup() { WriteEvent(2); }

        [Event(3, Message = "loading page {1} activityID={0}", Opcode = EventOpcode.Start,
            Task = Tasks.Page, Keywords = Keywords.Page, Level = EventLevel.Informational)]
        public void PageStart(int ID, string url) { if (IsEnabled()) WriteEvent(3, ID, url); }

        [Event(4, Opcode = EventOpcode.Stop, Task = Tasks.Page, Keywords = Keywords.Page, Level = EventLevel.Informational)]
        public void PageStop(int ID) { if (IsEnabled()) WriteEvent(4, ID); }

        [Event(5, Opcode = EventOpcode.Start, Task = Tasks.DBQuery, Keywords = Keywords.DataBase, Level = EventLevel.Informational)]
        public void DBQueryStart(string sqlQuery) { WriteEvent(5, sqlQuery); }

        [Event(6, Opcode = EventOpcode.Stop, Task = Tasks.DBQuery, Keywords = Keywords.DataBase, Level = EventLevel.Informational)]
        public void DBQueryStop() { WriteEvent(6); }

        [Event(7, Level = EventLevel.Verbose, Keywords = Keywords.DataBase)]
        public void Mark(int ID) { if (IsEnabled()) WriteEvent(7, ID); }

        [Event(8)]
        public void LogColor(MyColor color) { WriteEvent(8, (int) color); }

        public static MyCompanyEventSource Log = new MyCompanyEventSource();
    }

    class Program
    {
        static void Main(string[] args)
        {
            MyCompanyEventSource.Log.Startup();
            Console.WriteLine("Starting up");

            MyCompanyEventSource.Log.DBQueryStart("Select * from MYTable");
            var url = "http://localhost";
            for (int i = 0; i < 10; i++)
            {
                MyCompanyEventSource.Log.PageStart(i, url);
                MyCompanyEventSource.Log.Mark(i);
                MyCompanyEventSource.Log.PageStop(i);
            }
            MyCompanyEventSource.Log.DBQueryStop();
            MyCompanyEventSource.Log.LogColor(MyColor.Blue);

            MyCompanyEventSource.Log.Failure("This is a failure 1");
            MyCompanyEventSource.Log.Failure("This is a failure 2");
            MyCompanyEventSource.Log.Failure("This is a failure 3");
        }
    }
}

Imports System.Diagnostics.Tracing


Enum MyColor
    Red
    Yellow
    Blue
End Enum 'MyColor 
<EventSource(Name:="MyCompany")> _
Class MyCompanyEventSource
    Inherits EventSource

    Public Class Keywords
        Public Const Page As EventKeywords = CType(1, EventKeywords)
        Public Const DataBase As EventKeywords = CType(2, EventKeywords)
        Public Const Diagnostic As EventKeywords = CType(4, EventKeywords)
        Public Const Perf As EventKeywords = CType(8, EventKeywords)
    End Class

    Public Class Tasks
        Public Const Page As EventTask = CType(1, EventTask)
        Public Const DBQuery As EventTask = CType(1, EventTask)
    End Class

    <[Event](1, Message:="Application Failure: {0}", Level:=EventLevel.Error, Keywords:=Keywords.Diagnostic)> _
    Public Sub Failure(ByVal message As String)
        WriteEvent(1, message)
    End Sub

    <[Event](2, Message:="Starting up.", Keywords:=Keywords.Perf, Level:=EventLevel.Informational)> _
    Public Sub Startup()
        WriteEvent(2)
    End Sub

    <[Event](3, Message:="loading page {1} activityID={0}", Opcode:=EventOpcode.Start, Task:=Tasks.Page, Keywords:=Keywords.Page, Level:=EventLevel.Informational)> _
    Public Sub PageStart(ByVal ID As Integer, ByVal url As String)
        If IsEnabled() Then
            WriteEvent(3, ID, url)
        End If
    End Sub

    <[Event](4, Opcode:=EventOpcode.Stop, Task:=Tasks.Page, Keywords:=Keywords.Page, Level:=EventLevel.Informational)> _
    Public Sub PageStop(ByVal ID As Integer)
        If IsEnabled() Then
            WriteEvent(4, ID)
        End If
    End Sub

    <[Event](5, Opcode:=EventOpcode.Start, Task:=Tasks.DBQuery, Keywords:=Keywords.DataBase, Level:=EventLevel.Informational)> _
    Public Sub DBQueryStart(ByVal sqlQuery As String)
        WriteEvent(5, sqlQuery)
    End Sub

    <[Event](6, Opcode:=EventOpcode.Stop, Task:=Tasks.DBQuery, Keywords:=Keywords.DataBase, Level:=EventLevel.Informational)> _
    Public Sub DBQueryStop()
        WriteEvent(6)
    End Sub

    <[Event](7, Level:=EventLevel.Verbose, Keywords:=Keywords.DataBase)> _
    Public Sub Mark(ByVal ID As Integer)
        If IsEnabled() Then
            WriteEvent(7, ID)
        End If
    End Sub

    <[Event](8)> _
    Public Sub LogColor(ByVal color As MyColor)
        WriteEvent(8, Fix(color))
    End Sub
    Public Shared Log As New MyCompanyEventSource()
End Class


Class Program

    Shared Sub Main(ByVal args() As String)
        MyCompanyEventSource.Log.Startup()
        Console.WriteLine("Starting up")
        MyCompanyEventSource.Log.DBQueryStart("Select * from MYTable")
        Dim url As String = "http:'localhost"
        Dim i As Integer
        For i = 0 To 9
            MyCompanyEventSource.Log.PageStart(i, url)
            MyCompanyEventSource.Log.Mark(i)
            MyCompanyEventSource.Log.PageStop(i)
        Next i
        MyCompanyEventSource.Log.DBQueryStop()
        MyCompanyEventSource.Log.LogColor(MyColor.Blue)

        MyCompanyEventSource.Log.Failure("This is a failure 1")
        MyCompanyEventSource.Log.Failure("This is a failure 2")
        MyCompanyEventSource.Log.Failure("This is a failure 3")
    End Sub
End Class

public static class Keywords
{
    public const EventKeywords Page = (EventKeywords)1;
    public const EventKeywords DataBase = (EventKeywords)2;
    public const EventKeywords Diagnostic = (EventKeywords)4;
    public const EventKeywords Perf = (EventKeywords)8;
}

public static class Tasks
{
    public const EventTask Page = (EventTask)1;
    public const EventTask DBQuery = (EventTask)2;
}

Public Class Keywords
    Public Const Page As EventKeywords = CType(1, EventKeywords)
    Public Const DataBase As EventKeywords = CType(2, EventKeywords)
    Public Const Diagnostic As EventKeywords = CType(4, EventKeywords)
    Public Const Perf As EventKeywords = CType(8, EventKeywords)
End Class

Public Class Tasks
    Public Const Page As EventTask = CType(1, EventTask)
    Public Const DBQuery As EventTask = CType(1, EventTask)
End Class

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EventAttribute(Int32) Constructor

Definición

Parámetros

Ejemplos

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Recursos adicionales