TraceContextEventArgs 类

定义

向所有处理 TraceFinished 事件的方法提供跟踪记录的集合。 此类不能被继承。

public ref class TraceContextEventArgs sealed : EventArgs
public sealed class TraceContextEventArgs : EventArgs
type TraceContextEventArgs = class
    inherit EventArgs
Public NotInheritable Class TraceContextEventArgs
Inherits EventArgs
继承
TraceContextEventArgs

示例

下面的代码示例演示如何注册 TraceContextEventHandler 委托来处理 事件 TraceFinished 。 在此示例中, OnTraceFinished 方法通过 TraceRecords 属性访问 对象的集合TraceContextRecord,循环访问这些对象,并将其写入响应流。

<%@ 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

TraceContextEventArgs 用于 TraceContext 在 HTTP 请求处理过程中收集所有跟踪信息后提供对跟踪记录的访问。 通过添加事件处理程序委托来处理事件 TraceFinished ,可以处理记录,将其记录记录记录到自己的数据存储中,或将其作为输入提供给分析工具。

构造函数

TraceContextEventArgs(ICollection)

使用提供的跟踪记录集合来初始化 TraceContextEventArgs 类的新实例。

属性

TraceRecords

获取与当前请求关联的 TraceContextRecord 消息的集合。

方法

Equals(Object)

确定指定对象是否等于当前对象。

(继承自 Object)
GetHashCode()

作为默认哈希函数。

(继承自 Object)
GetType()

获取当前实例的 Type

(继承自 Object)
MemberwiseClone()

创建当前 Object 的浅表副本。

(继承自 Object)
ToString()

返回表示当前对象的字符串。

(继承自 Object)

适用于

另请参阅