TraceContextEventArgs Class
Provides a collection of trace records to any method that handles the TraceFinished event. This class cannot be inherited.
Assembly: System.Web (in System.Web.dll)
The TraceContextEventArgs class is used by the TraceContext class to provide access to trace records after all the tracing information is gathered during HTTP request processing. By adding an event handler delegate to handle the TraceFinished event, you can process the records, record them to your own data store, or provide them as input to a profiling tool.
The following code example demonstrates how you can register a TraceContextEventHandler delegate to handle the TraceFinished event. In this example, the OnTraceFinished method accesses the collection of TraceContextRecord objects through the TraceRecords property, iterates through them, and writes them to the response stream.
<%@ 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>
- AspNetHostingPermission
for operating in a hosted environment. Demand value: LinkDemand; Permission value: Minimal.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.