HttpApplication.LogRequest 事件
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
恰好在 ASP.NET 为当前请求执行任何记录之前发生。
public:
event EventHandler ^ LogRequest;public event EventHandler LogRequest;member this.LogRequest : EventHandler Public Custom Event LogRequest As EventHandler 事件类型
示例
以下示例演示如何为 LogRequest 事件提供事件处理程序。 事件处理程序还处理其他几个事件。 因此， CurrentNotification 和 IsPostNotification 属性用于确定要运行的代码。
using System;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
// Module that demonstrates one event handler for several events.
namespace Samples
{
public class ModuleExampleTestCS : IHttpModule
{
public ModuleExampleTestCS()
{
// Constructor
}
public void Init(HttpApplication app)
{
app.AuthenticateRequest += new EventHandler(App_Handler);
app.PostAuthenticateRequest += new EventHandler(App_Handler);
app.LogRequest += new EventHandler(App_Handler);
app.PostLogRequest += new EventHandler(App_Handler);
}
public void Dispose()
{
}
// One handler for AuthenticationRequest, PostAuthenticateRequest,
// LogRequest, and PostLogRequest events
public void App_Handler(object source, EventArgs e)
{
HttpApplication app = (HttpApplication)source;
HttpContext context = app.Context;
if (context.CurrentNotification == RequestNotification.AuthenticateRequest)
{
if (!context.IsPostNotification)
{
// Put code here that is invoked when the AuthenticateRequest event is raised.
}
else
{
// PostAuthenticateRequest
// Put code here that runs after the AuthenticateRequest event completes.
}
}
if (context.CurrentNotification == RequestNotification.LogRequest)
{
if (!context.IsPostNotification)
{
// Put code here that is invoked when the LogRequest event is raised.
}
else
{
// PostLogRequest
// Put code here that runs after the LogRequest event completes.
}
}
}
}
}
Imports System.Data
Imports System.Web
Imports System.Web.Security
Imports System.Web.UI
' Module that demonstrates one event handler for several events.
Namespace Samples
Public Class ModuleExampleTestVB
Implements IHttpModule
Public Sub New()
' Constructor
End Sub
Public Sub Init(ByVal app As HttpApplication) Implements IHttpModule.Init
AddHandler app.AuthenticateRequest, AddressOf Me.App_Handler
AddHandler app.PostAuthenticateRequest, AddressOf Me.App_Handler
AddHandler app.LogRequest, AddressOf Me.App_Handler
AddHandler app.PostLogRequest, AddressOf Me.App_Handler
End Sub
Public Sub Dispose() Implements IHttpModule.Dispose
End Sub
' One handler for AuthenticationRequest, PostAuthenticateRequest,
' LogRequest, and PostLogRequest events
Public Sub App_Handler(ByVal source As Object, ByVal e As EventArgs)
Dim app As HttpApplication = CType(source, HttpApplication)
Dim context As HttpContext = app.Context
If (context.CurrentNotification = RequestNotification.AuthenticateRequest) Then
If Not (context.IsPostNotification) Then
' Put code here that is invoked when the AuthenticateRequest event is raised.
Else
' PostAuthenticateRequest
' Put code here that runs after the AuthenticateRequest event completes.
End If
End If
If (context.CurrentNotification = RequestNotification.LogRequest) Then
If Not (context.IsPostNotification) Then
' Put code here that is invoked when the LogRequest event is raised.
Else
' PostLogRequest
' Put code here that runs after the LogRequest event completes.
End If
End If
End Sub
End Class
End Namespace
注解
LogRequest即使发生错误，也会引发 事件。 可以为 事件提供事件处理程序， LogRequest 以便为请求提供自定义日志记录。
有关如何处理事件的详细信息，请参阅 处理和引发事件。
LogRequest.NET Framework版本 3.5 中引入了 。 有关详细信息，请参见版本和依赖关系。
