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TraceContext.TraceFinished Event

Raised by the TraceContext object to expose trace messages after all request information is gathered.

Namespace:  System.Web
Assembly:  System.Web (in System.Web.dll)

public event TraceContextEventHandler TraceFinished

The TraceFinished event is raised during the EndRequest stage of HTTP request processing. It is raised by a TraceContext object after all request information is gathered, to expose the collection of TraceContextRecord messages to registered TraceContextEventHandler delegates.

TopicLocation
Walkthrough: Using Tracing in Visual Web Developer to Help Find Web Page ErrorsBuilding ASP .NET Web Applications in Visual Studio

The following code example demonstrates how you can register a TraceContextEventHandler to handle the TraceFinished event. In this example, the delegate iterates through the trace messages and writes them to the response stream; however, you could write the same information to a database or a profiling tool consumer.

<%@ 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>

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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