TraceContextRecord TraceContextRecord TraceContextRecord TraceContextRecord Class

Definition

Represents an ASP.NET trace message and any associated data.

public ref class TraceContextRecord sealed
public sealed class TraceContextRecord
type TraceContextRecord = class
Public NotInheritable Class TraceContextRecord
Inheritance
TraceContextRecordTraceContextRecordTraceContextRecordTraceContextRecord

Examples

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="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>

Remarks

The TraceContextRecord object encapsulates the trace message, category, any associated Exception, and whether the trace record was written by the TraceContext.Warn method.

Every call to the TraceContext.Write and TraceContext.Warn methods generates a TraceContextRecord object that is added to the TraceContextEventArgs.TraceRecords messages collection. You can access the collection of records by handling the TraceFinished event.

Constructors

TraceContextRecord(String, String, Boolean, Exception) TraceContextRecord(String, String, Boolean, Exception) TraceContextRecord(String, String, Boolean, Exception) TraceContextRecord(String, String, Boolean, Exception)

Initializes a new instance of the TraceContextRecord class.

Properties

Category Category Category Category

Gets the user-defined category for the trace record.

ErrorInfo ErrorInfo ErrorInfo ErrorInfo

Gets the Exception associated with the trace record, if one is available.

IsWarning IsWarning IsWarning IsWarning

Gets a value indicating whether the trace record is associated with a Warn method call.

Message Message Message Message

Gets the user-defined trace message.

Methods

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Returns a string that represents the current object.

(Inherited from Object)

Applies to

See also