TraceContextEventArgs.TraceRecords 屬性

定義

命名空間:

System.Web

組件:

System.Web.dll

取得與目前要求相關聯的 TraceContextRecord 訊息集合。

public:
 property System::Collections::ICollection ^ TraceRecords { System::Collections::ICollection ^ get(); };

public System.Collections.ICollection TraceRecords { get; }

member this.TraceRecords : System.Collections.ICollection

Public ReadOnly Property TraceRecords As ICollection

屬性值

ICollection

與目前要求相關聯的追蹤記錄集合。

範例

下列程式碼範例示範如何註冊 TraceContextEventHandler 委派來處理 TraceFinished 事件。 在此範例中，方法會 OnTraceFinished 透過 TraceRecords 屬性存取 物件的集合 TraceContextRecord 、逐一查看物件，並將其寫入回應資料流程。

<%@ 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>

備註

對 和 TraceContext.Warn 方法的每個呼叫 TraceContext.Write 都會 TraceContextRecord 產生物件，該物件會新增至 TraceRecords 訊息集合。 方法呼叫會將 WarnIsWarning 屬性設定為 true ，而其他方法呼叫則會將其設定為 false 。

您可以逐一查看訊息， TraceRecords 並檢查具有特定類別或訊息的記錄，以及它們是否為警告。

另請參閱

• TraceContextRecord
• TraceContextEventHandler
• TraceContext
• ASP.NET 追蹤概觀