TraceSection 类
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
配置 ASP.NET 跟踪服务。 此类不能被继承。
public ref class TraceSection sealed : System::Configuration::ConfigurationSectionpublic sealed class TraceSection : System.Configuration.ConfigurationSectiontype TraceSection = class
inherit ConfigurationSectionPublic NotInheritable Class TraceSection
Inherits ConfigurationSection- 继承
示例
下面的代码示例演示如何使用 TraceSection 类型。
using System;
using System.Collections;
using System.Collections.Specialized;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Configuration;
using System.Web.Configuration;
namespace Samples.Aspnet.SystemWebConfiguration
{
// Accesses the System.Web.Configuration.TraceSection members
// selected by the user.
class UsingTraceSection
{
public static void Main()
{
// Process the System.Web.Configuration.TraceSectionobject.
try
{
// Get the Web application configuration.
System.Configuration.Configuration configuration =
System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("/aspnet");
// Get the section.
System.Web.Configuration.TraceSection traceSection =
(System.Web.Configuration.TraceSection)
configuration.GetSection("system.web/trace");
// Get the current PageOutput property value.
Boolean pageOutputValue = traceSection.PageOutput;
// Set the PageOutput property to true.
traceSection.PageOutput = true;
// Get the current WriteToDiagnosticsTrace property value.
Boolean writeToDiagnosticsTraceValue = traceSection.WriteToDiagnosticsTrace;
// Set the WriteToDiagnosticsTrace property to true.
traceSection.WriteToDiagnosticsTrace = true;
// Get the current MostRecent property value.
Boolean mostRecentValue = traceSection.MostRecent;
// Set the MostRecent property to true.
traceSection.MostRecent = true;
// Get the current RequestLimit property value.
Int32 requestLimitValue = traceSection.RequestLimit;
// Set the RequestLimit property to 256.
traceSection.RequestLimit = 256;
// Get the current LocalOnly property value.
Boolean localOnlyValue = traceSection.LocalOnly;
// Set the LocalOnly property to false.
traceSection.LocalOnly = false;
// Get the current Enabled property value.
Boolean enabledValue = traceSection.Enabled;
// Set the Enabled property to false.
traceSection.Enabled = false;
// Get the current Mode property value.
// TraceDisplayMode modeValue = traceSection.TraceMode;
// Set the Mode property to TraceDisplayMode.SortyByTime.
// traceSection.Mode = TraceDisplayMode.SortByTime;
// Update if not locked.
if (!traceSection.SectionInformation.IsLocked)
{
configuration.Save();
Console.WriteLine("** Configuration updated.");
}
else
{
Console.WriteLine("** Could not update, section is locked.");
}
}
catch (System.ArgumentException e)
{
// Unknown error.
Console.WriteLine(
"A invalid argument exception detected in UsingTraceSection Main. Check your");
Console.WriteLine("command line for errors.");
}
}
} // UsingTraceSection class end.
} // Samples.Aspnet.SystemWebConfiguration namespace end.
Imports System.Collections
Imports System.Collections.Specialized
Imports System.IO
Imports System.Text
Imports System.Text.RegularExpressions
Imports System.Configuration
Imports System.Web.Configuration
Namespace Samples.Aspnet.SystemWebConfiguration
' Accesses the System.Web.Configuration.TraceSection members
' selected by the user.
Class UsingTraceSection
Public Shared Sub Main()
' Process the System.Web.Configuration.TraceSectionobject.
Try
' Get the Web application configuration.
Dim configuration As System.Configuration.Configuration = _
System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("/aspnet")
' Get the section.
Dim traceSection As System.Web.Configuration.TraceSection = _
CType(configuration.GetSection("system.web/trace"), _
System.Web.Configuration.TraceSection)
' Get the current PageOutput property value.
Dim pageOutputValue As Boolean = traceSection.PageOutput
' Set the PageOutput property to true.
traceSection.PageOutput = True
' Get the current WriteToDiagnosticsTrace property value.
Dim writeToDiagnosticsTraceValue As Boolean = traceSection.WriteToDiagnosticsTrace
' Set the WriteToDiagnosticsTrace property to true.
traceSection.WriteToDiagnosticsTrace = True
' Get the current MostRecent property value.
Dim mostRecentValue As Boolean = traceSection.MostRecent
' Set the MostRecent property to true.
traceSection.MostRecent = True
' Get the current RequestLimit property value.
Dim requestLimitValue As Int32 = traceSection.RequestLimit
' Set the RequestLimit property to 256.
traceSection.RequestLimit = 256
' Get the current LocalOnly property value.
Dim localOnlyValue As Boolean = traceSection.LocalOnly
' Set the LocalOnly property to false.
traceSection.LocalOnly = False
' Get the current Enabled property value.
Dim enabledValue As Boolean = traceSection.Enabled
' Set the Enabled property to false.
traceSection.Enabled = False
' Get the current Mode property value.
'Dim modeValue As TraceDisplayMode = traceSection.TraceMode
' Set the Mode property to TraceDisplayMode.SortByTime.
'traceSection.Mode = TraceDisplayMode.SortByTime
' Update if not locked.
If Not traceSection.SectionInformation.IsLocked Then
configuration.Save()
Console.WriteLine("** Configuration updated.")
Else
Console.WriteLine("** Could not update, section is locked.")
End If
Catch e As System.ArgumentException
' Unknown error.
Console.WriteLine( _
"A invalid argument exception detected in UsingTraceSection Main. Check your")
Console.WriteLine("command line for errors.")
End Try
End Sub
End Class
End Namespace ' Samples.Aspnet.SystemWebConfiguration
注解
类 TraceSection 提供了一种以编程方式访问和修改配置文件 trace 部分内容的方法。 部分 trace 配置 ASP.NET 跟踪功能，并控制如何收集、存储和显示跟踪结果。
启用跟踪后，每个页面请求都会生成可追加到页面输出或存储在应用程序跟踪日志中的跟踪消息。 可以使用 trace.axd) ASP.NET 跟踪查看器 (来查看跟踪日志的内容。
构造函数
| TraceSection() |
使用默认设置初始化 TraceSection 类的新实例。 |
