TraceContext.TraceFinished 事件

  • 参考

定义

命名空间:
System.Web
程序集:
System.Web.dll

由 TraceContext 对象引发，用于在收集完所有请求信息后公开跟踪消息。

public:
 event System::Web::TraceContextEventHandler ^ TraceFinished;
public event System.Web.TraceContextEventHandler TraceFinished;
member this.TraceFinished : System.Web.TraceContextEventHandler 
Public Custom Event TraceFinished As TraceContextEventHandler

事件类型

TraceContextEventHandler

示例

下面的代码示例演示如何注册 TraceContextEventHandler 以处理 事件 TraceFinished 。 在此示例中， 委托循环访问跟踪消息并将其写入响应流;但是，可以将相同的信息写入数据库或分析工具使用者。

<%@ Page language="c#" Trace="true" %>
<script runat="server">
void Page_Load(object sender, EventArgs e)
{
    // Register a handler for the TraceFinished event.
    Trace.TraceFinished += new 
        TraceContextEventHandler(this.OnTraceFinished);

    // Write a trace message.
    Trace.Write("Web Forms Infrastructure Methods", "USERMESSAGE: Page_Load complete.");
}
 
// A TraceContextEventHandler for the TraceFinished event.
void OnTraceFinished(object sender, TraceContextEventArgs e)
{
    TraceContextRecord r = null;    
    
    // Iterate through the collection of trace records and write 
    // them to the response stream.
    foreach(object o in e.TraceRecords)
    {
        r = (TraceContextRecord)o;
        Response.Write(String.Format("trace message: {0} <BR>", r.Message));
    }
}       
</script>

<%@ Page language="VB" Trace="true" %>
<script runat="server">
' The Page_Load method.
Private Sub Page_Load(sender As Object, e As EventArgs)

    ' Register a handler for the TraceFinished event.
    AddHandler Trace.TraceFinished, AddressOf OnTraceFinished

    ' Write a trace message.
    Trace.Write("Web Forms Infrastructure Methods", "USERMESSAGE: Page_Load complete.")
End Sub ' Page_Load
 
' A TraceContextEventHandler for the TraceFinished event.
Private Sub OnTraceFinished(sender As Object, e As TraceContextEventArgs)

    Dim r As TraceContextRecord
    Dim o As Object
    
    ' Iterate through the collection of trace records and write 
    ' them to the response stream.

    For Each o In e.TraceRecords
        r = CType(o, TraceContextRecord)
        Response.Write(String.Format("trace message: {0} <BR>", r.Message))
    Next

End Sub ' OnTraceFinished
</script>

注解

在 TraceFinished HTTP 请求处理阶段引发 EndRequest 事件。 它由 TraceContext 对象在收集所有请求信息后引发，以向已注册TraceContextEventHandler的委托公开消息集合TraceContextRecord。

适用于

另请参阅