TraceSection 类

定义

public ref class TraceSection sealed : System::Configuration::ConfigurationSection

public sealed class TraceSection : System.Configuration.ConfigurationSection

type TraceSection = class
    inherit ConfigurationSection

Public NotInheritable Class TraceSection
Inherits ConfigurationSection

继承

Object

ConfigurationElement

ConfigurationSection

TraceSection

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，并控制跟踪结果的收集、存储和显示方式。

启用跟踪后，每个页面请求都会生成跟踪消息，这些消息可以追加到页面输出或存储在应用程序跟踪日志中。 可以使用 ASP.NET 跟踪查看器 (Trace.axd) 查看跟踪日志的内容。

构造函数

属性

方法

适用于

另请参阅

• ConfigurationSection
• ASP.NET 跟踪概述
• 如何：使用跟踪查看器查看跟踪信息