Export (0) Print
Expand All
Expand Minimize

TraceContextEventHandler Delegate

Represents the method that handles the TraceFinished event of a TraceContext object.

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

public delegate void TraceContextEventHandler(
	Object sender,
	TraceContextEventArgs e
)

Parameters

sender
Type: System.Object

The event source (the TraceContext).

e
Type: System.Web.TraceContextEventArgs

A TraceContextEventArgs that contains the event data.

When you create a TraceContextEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate.

For more information about event handler delegates, see Events and Delegates.

The following code example demonstrates how to register a TraceContextEventHandler delegate to handle the TraceFinished event. In this example, the OnTraceFinished method iterates through the trace records and writes them to the response stream.

<%@ 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>

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.

.NET Framework

Supported in: 3.5, 3.0, 2.0

Community Additions

ADD
Show:
© 2014 Microsoft