PagesSection Classe

Definição

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

public sealed class PagesSection : System.Configuration.ConfigurationSection

type PagesSection = class
    inherit ConfigurationSection

Public NotInheritable Class PagesSection
Inherits ConfigurationSection

Herança

Object

ConfigurationElement

ConfigurationSection

PagesSection

Exemplos

Este exemplo demonstra como especificar valores declarativamente para vários atributos da pages secção, que também podem ser acedidos como membros da PagesSection classe.

O exemplo seguinte do ficheiro de configuração mostra como especificar valores de forma declarativa para a secção de páginas .

<system.web>
  <pages buffer="true"
    enableSessionState="true"
    enableViewState="true"
    enableViewStateMac="true"
    autoEventWireup="true"
    validateRequest="true"
    asyncTimeout="45"
    maintainScrollPositionOnPostBack = "False"
    viewStateEncryptionMode = "Auto">
    <namespaces>
      <add namespace="System" />
      <add namespace="System.Collections" />
      <add namespace="System.Collections.Specialized" />
      <add namespace="System.ComponentModel" />
      <add namespace="System.Configuration" />
      <add namespace="System.Web" />
    </namespaces>
    <controls>
      <clear />
      <remove tagPrefix="MyTags" />
      <!-- Searches all linked assemblies for the namespace -->
      <add tagPrefix="MyTags1" namespace=" MyNameSpace "/>
      <!-- Uses a specified assembly -->
      <add tagPrefix="MyTags2" namespace="MyNameSpace"
        assembly="MyAssembly"/>
      <!-- Uses the specified source for the user control -->
      <add tagprefix="MyTags3" tagname="MyCtrl"
        src="MyControl.ascx"/>
    </controls>
    <tagMapping>
      <clear />
      <add
        tagTypeName=
          "System.Web.UI.WebControls.WebParts.WebPartManager"
        mappedTagTypeName=
          "Microsoft.Sharepoint.WebPartPartManager,
          MSPS.Web.dll, Version='2.0.0.0'"
      />
      <remove tagTypeName="SomeOtherNS.Class, Assemblyname" />
    </tagMapping>
  </pages>
</system.web>

O exemplo de código seguinte demonstra como usar a PagesSection classe.

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Configuration;
using System.Web.Configuration;
using System.Web.UI;

namespace Samples.Aspnet.SystemWebConfiguration
{
  class UsingPagesSection
  {
    public static void Main()
    {
      try
      {
        // Get the Web application configuration.
        Configuration configuration =
          WebConfigurationManager.OpenWebConfiguration("");

        // Get the section.
        PagesSection pagesSection =
            (PagesSection)configuration.GetSection("system.web/pages");

        // Get the AutoImportVBNamespace property.
        Console.WriteLine("AutoImportVBNamespace: '{0}'",
            pagesSection.Namespaces.AutoImportVBNamespace.ToString());

        // Set the AutoImportVBNamespace property.
        pagesSection.Namespaces.AutoImportVBNamespace = true;
 
        // Get all current Namespaces in the collection.
        for (int i = 0; i < pagesSection.Namespaces.Count; i++)
        {
          Console.WriteLine(
              "Namespaces {0}: '{1}'", i,
              pagesSection.Namespaces[i].Namespace);
        }

        // Create a new NamespaceInfo object.
        System.Web.Configuration.NamespaceInfo namespaceInfo =
            new System.Web.Configuration.NamespaceInfo("System");

        // Set the Namespace property.
        namespaceInfo.Namespace = "System.Collections";

        // Execute the Add Method.
        pagesSection.Namespaces.Add(namespaceInfo);

        // Add a NamespaceInfo object using a constructor.
        pagesSection.Namespaces.Add(
            new System.Web.Configuration.NamespaceInfo(
            "System.Collections.Specialized"));

        // Execute the RemoveAt method.
        pagesSection.Namespaces.RemoveAt(0);

        // Execute the Clear method.
        pagesSection.Namespaces.Clear();

        // Execute the Remove method.
        pagesSection.Namespaces.Remove("System.Collections");

        // Get the current AutoImportVBNamespace property value.
        Console.WriteLine(
            "Current AutoImportVBNamespace value: '{0}'",
            pagesSection.Namespaces.AutoImportVBNamespace);

        // Set the AutoImportVBNamespace property to false.
        pagesSection.Namespaces.AutoImportVBNamespace = false;

        // Get the current PageParserFilterType property value.
        Console.WriteLine(
            "Current PageParserFilterType value: '{0}'",
            pagesSection.PageParserFilterType);

        // Set the PageParserFilterType property to
        // "MyNameSpace.AllowOnlySafeControls".
        pagesSection.PageParserFilterType =
            "MyNameSpace.AllowOnlySafeControls";

        // Get the current Theme property value.
        Console.WriteLine(
            "Current Theme value: '{0}'",
            pagesSection.Theme);

        // Set the Theme property to "MyCustomTheme".
        pagesSection.Theme = "MyCustomTheme";

        // Get the current EnableViewState property value.
        Console.WriteLine(
            "Current EnableViewState value: '{0}'",
            pagesSection.EnableViewState);

        // Set the EnableViewState property to false.
        pagesSection.EnableViewState = false;

        // Get the current CompilationMode property value.
        Console.WriteLine(
            "Current CompilationMode value: '{0}'",
            pagesSection.CompilationMode);

        // Set the CompilationMode property to CompilationMode.Always.
        pagesSection.CompilationMode = CompilationMode.Always;

        // Get the current ValidateRequest property value.
        Console.WriteLine(
            "Current ValidateRequest value: '{0}'",
            pagesSection.ValidateRequest);

        // Set the ValidateRequest property to true.
        pagesSection.ValidateRequest = true;

        // Get the current EnableViewStateMac property value.
        Console.WriteLine(
            "Current EnableViewStateMac value: '{0}'",
            pagesSection.EnableViewStateMac);

        // Set the EnableViewStateMac property to true.
        pagesSection.EnableViewStateMac = true;

        // Get the current AutoEventWireup property value.
        Console.WriteLine(
            "Current AutoEventWireup value: '{0}'",
            pagesSection.AutoEventWireup);

        // Set the AutoEventWireup property to false.
        pagesSection.AutoEventWireup = false;

        // Get the current MaxPageStateFieldLength property value.
        Console.WriteLine(
            "Current MaxPageStateFieldLength value: '{0}'",
            pagesSection.MaxPageStateFieldLength);

        // Set the MaxPageStateFieldLength property to 4098.
        pagesSection.MaxPageStateFieldLength = 4098;

        // Get the current UserControlBaseType property value.
        Console.WriteLine(
            "Current UserControlBaseType value: '{0}'",
            pagesSection.UserControlBaseType);

        // Set the UserControlBaseType property to
        // "MyNameSpace.MyCustomControlBaseType".
        pagesSection.UserControlBaseType =
            "MyNameSpace.MyCustomControlBaseType";

        // Get all current Controls in the collection.
        for (int i = 0; i < pagesSection.Controls.Count; i++)
        {
          Console.WriteLine("Control {0}:", i);
          Console.WriteLine("  TagPrefix = '{0}' ",
              pagesSection.Controls[i].TagPrefix);
          Console.WriteLine("  TagName = '{0}' ",
              pagesSection.Controls[i].TagName);
          Console.WriteLine("  Source = '{0}' ",
              pagesSection.Controls[i].Source);
          Console.WriteLine("  Namespace = '{0}' ",
              pagesSection.Controls[i].Namespace);
          Console.WriteLine("  Assembly = '{0}' ",
              pagesSection.Controls[i].Assembly);
        }

        // Create a new TagPrefixInfo object.
        System.Web.Configuration.TagPrefixInfo tagPrefixInfo =
            new System.Web.Configuration.TagPrefixInfo("MyCtrl", "MyNameSpace", "MyAssembly", "MyControl", "MyControl.ascx");

        // Execute the Add Method.
        pagesSection.Controls.Add(tagPrefixInfo);

        // Add a TagPrefixInfo object using a constructor.
        pagesSection.Controls.Add(
            new System.Web.Configuration.TagPrefixInfo(
            "MyCtrl", "MyNameSpace", "MyAssembly", "MyControl",
            "MyControl.ascx"));

        // Get the current StyleSheetTheme property value.
        Console.WriteLine(
            "Current StyleSheetTheme value: '{0}'",
            pagesSection.StyleSheetTheme);

        // Set the StyleSheetTheme property.
        pagesSection.StyleSheetTheme =
            "MyCustomStyleSheetTheme";

        // Get the current EnableSessionState property value.
        Console.WriteLine(
            "Current EnableSessionState value: '{0}'",
            pagesSection.EnableSessionState);

        // Set the EnableSessionState property to
        // PagesEnableSessionState.ReadOnly.
        pagesSection.EnableSessionState =
            PagesEnableSessionState.ReadOnly;
 
        // Get the current MasterPageFile property value.
        Console.WriteLine(
            "Current MasterPageFile value: '{0}'",
            pagesSection.MasterPageFile);

        // Set the MasterPageFile property to "MyMasterPage.ascx".
        pagesSection.MasterPageFile = "MyMasterPage.ascx";

        // Get the current Buffer property value.
        Console.WriteLine(
            "Current Buffer value: '{0}'", pagesSection.Buffer);

        // Set the Buffer property to true.
        pagesSection.Buffer = true;

        // Get all current TagMappings in the collection.
        for (int i = 0; i < pagesSection.TagMapping.Count; i++)
        {
          Console.WriteLine("TagMapping {0}:", i);
          Console.WriteLine("  TagTypeName = '{0}'",
              pagesSection.TagMapping[i].TagType);
          Console.WriteLine("  MappedTagTypeName = '{0}'",
              pagesSection.TagMapping[i].MappedTagType);
        }

        // Add a TagMapInfo object using a constructor.
        pagesSection.TagMapping.Add(
            new System.Web.Configuration.TagMapInfo(
            "MyNameSpace.MyControl", "MyNameSpace.MyOtherControl"));

        // Get the current PageBaseType property value.
        Console.WriteLine(
            "Current PageBaseType value: '{0}'",
            pagesSection.PageBaseType);

        // Set the PageBaseType property to
        // "MyNameSpace.MyCustomPagelBaseType".
        pagesSection.PageBaseType =
            "MyNameSpace.MyCustomPagelBaseType";

        // Get the current SmartNavigation property value.
        Console.WriteLine(
            "Current SmartNavigation value: '{0}'",
            pagesSection.SmartNavigation);

        // Set the SmartNavigation property to true.
        pagesSection.SmartNavigation = true;

        // Update if not locked.
        if (!pagesSection.SectionInformation.IsLocked)
        {
          configuration.Save();
          Console.WriteLine("** Configuration updated.");
        }
        else
                {
                    Console.WriteLine("** Could not update, section is locked.");
                }
            }
      catch (System.Exception e)
      {
        // Unknown error.
        Console.WriteLine("A unknown exception detected in" +
          "UsingPagesSection Main.");
        Console.WriteLine(e);
      }
      Console.ReadLine();
    }
  } // UsingPagesSection class end.
} // Samples.Aspnet.SystemWebConfiguration namespace end.

Imports System.Collections
Imports System.Collections.Specialized
Imports System.Configuration
Imports System.Web.Configuration
Imports System.Web.UI

Namespace Samples.Aspnet.SystemWebConfiguration
  Class UsingPagesSection
    Public Shared Sub Main()
      Try
        ' Get the Web application configuration.
        Dim configuration As System.Configuration.Configuration = _
            System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("")

        ' Get the section.
        Dim pagesSection As System.Web.Configuration.PagesSection = _
            CType(configuration.GetSection("system.web/pages"), _
            System.Web.Configuration.PagesSection)

        ' Get the AutoImportVBNamespace property.
        Console.WriteLine( _
         "AutoImportVBNamespace: '{0}'", _
         pagesSection.Namespaces.AutoImportVBNamespace)

        ' Set the AutoImportVBNamespace property.
        pagesSection.Namespaces.AutoImportVBNamespace = True

        ' Get all current Namespaces in the collection.
        Dim i As Int16
        For i = 0 To pagesSection.Namespaces.Count - 1
          Console.WriteLine( _
           "Namespaces {0}: '{1}'", i, _
           pagesSection.Namespaces(i).Namespace)
        Next

        ' Create a new NamespaceInfo object.
        Dim namespaceInfo As System.Web.Configuration.NamespaceInfo = _
         New System.Web.Configuration.NamespaceInfo("System")

        ' Set the Namespace property.
        namespaceInfo.Namespace = "System.Collections"

        ' Execute the Add Method.
        pagesSection.Namespaces.Add(namespaceInfo)

        ' Add a NamespaceInfo object using a constructor.
        pagesSection.Namespaces.Add( _
         New System.Web.Configuration.NamespaceInfo( _
         "System.Collections.Specialized"))

        ' Execute the RemoveAt method.
        pagesSection.Namespaces.RemoveAt(0)

        ' Execute the Clear method.
        pagesSection.Namespaces.Clear()

        ' Execute the Remove method.
        pagesSection.Namespaces.Remove("System.Collections")

        ' Get the current AutoImportVBNamespace property value.
        Console.WriteLine( _
         "Current AutoImportVBNamespace value: '{0}'", _
         pagesSection.Namespaces.AutoImportVBNamespace)

        ' Set the AutoImportVBNamespace property to false.
        pagesSection.Namespaces.AutoImportVBNamespace = False

        ' Get the current PageParserFilterType property value.
        Console.WriteLine( _
            "Current PageParserFilterType value: '{0}'", _
            pagesSection.PageParserFilterType)

        ' Set the PageParserFilterType property to
        ' "MyNameSpace.AllowOnlySafeControls".
        pagesSection.PageParserFilterType = _
            "MyNameSpace.AllowOnlySafeControls"

        ' Get the current Theme property value.
        Console.WriteLine( _
            "Current Theme value: '{0}'", pagesSection.Theme)

        ' Set the Theme property to "MyCustomTheme".
        pagesSection.Theme = "MyCustomTheme"

        ' Get the current EnableViewState property value.
        Console.WriteLine( _
            "Current EnableViewState value: '{0}'", _
            pagesSection.EnableViewState)

        ' Set the EnableViewState property to false.
        pagesSection.EnableViewState = False

        ' Get the current CompilationMode property value.
        Console.WriteLine( _
            "Current CompilationMode value: '{0}'", _
            pagesSection.CompilationMode)

        ' Set the CompilationMode property to CompilationMode.Always.
        pagesSection.CompilationMode = CompilationMode.Always

        ' Get the current ValidateRequest property value.
        Console.WriteLine( _
            "Current ValidateRequest value: '{0}'", _
            pagesSection.ValidateRequest)

        ' Set the ValidateRequest property to true.
        pagesSection.ValidateRequest = True

        ' Get the current EnableViewStateMac property value.
        Console.WriteLine( _
            "Current EnableViewStateMac value: '{0}'", _
            pagesSection.EnableViewStateMac)

        ' Set the EnableViewStateMac property to true.
        pagesSection.EnableViewStateMac = True

        ' Get the current AutoEventWireup property value.
        Console.WriteLine( _
            "Current AutoEventWireup value: '{0}'", _
            pagesSection.AutoEventWireup)

        ' Set the AutoEventWireup property to false.
        pagesSection.AutoEventWireup = False

        ' Get the current MaxPageStateFieldLength property value.
        Console.WriteLine( _
            "Current MaxPageStateFieldLength value: '{0}'", _
            pagesSection.MaxPageStateFieldLength)

        ' Set the MaxPageStateFieldLength property to 4098.
        pagesSection.MaxPageStateFieldLength = 4098

        ' Get the current UserControlBaseType property value.
        Console.WriteLine( _
            "Current UserControlBaseType value: '{0}'", _
            pagesSection.UserControlBaseType)

        ' Set the UserControlBaseType property to
        ' "MyNameSpace.MyCustomControlBaseType".
        pagesSection.UserControlBaseType = _
            "MyNameSpace.MyCustomControlBaseType"

        ' Get all current Controls in the collection.
        Dim j As Int32
        For j = 0 To pagesSection.Controls.Count - 1
          Console.WriteLine("Control {0}:", j)
          Console.WriteLine("  TagPrefix = '{0}' ", _
           pagesSection.Controls(j).TagPrefix)
          Console.WriteLine("  TagName = '{0}' ", _
           pagesSection.Controls(j).TagName)
          Console.WriteLine("  Source = '{0}' ", _
           pagesSection.Controls(j).Source)
          Console.WriteLine("  Namespace = '{0}' ", _
           pagesSection.Controls(j).Namespace)
          Console.WriteLine("  Assembly = '{0}' ", _
           pagesSection.Controls(j).Assembly)
        Next

        ' Create a new TagPrefixInfo object.
        Dim tagPrefixInfo As System.Web.Configuration.TagPrefixInfo = _
         New System.Web.Configuration.TagPrefixInfo("MyCtrl", "MyNameSpace", "MyAssembly", "MyControl", "MyControl.ascx")

        ' Execute the Add Method.
        pagesSection.Controls.Add(tagPrefixInfo)

        ' Add a TagPrefixInfo object using a constructor.
        pagesSection.Controls.Add( _
         New System.Web.Configuration.TagPrefixInfo( _
         "MyCtrl", "MyNameSpace", "MyAssembly", "MyControl", _
         "MyControl.ascx"))

        ' Get the current StyleSheetTheme property value.
        Console.WriteLine( _
            "Current StyleSheetTheme value: '{0}'", _
            pagesSection.StyleSheetTheme)

        ' Set the StyleSheetTheme property to
        ' "MyCustomStyleSheetTheme".
        pagesSection.StyleSheetTheme = "MyCustomStyleSheetTheme"

        ' Get the current EnableSessionState property value.
        Console.WriteLine( _
            "Current EnableSessionState value: '{0}'", pagesSection.EnableSessionState)

        ' Set the EnableSessionState property to
        ' PagesEnableSessionState.ReadOnly.
        pagesSection.EnableSessionState = PagesEnableSessionState.ReadOnly

        ' Get the current MasterPageFile property value.
        Console.WriteLine( _
            "Current MasterPageFile value: '{0}'", _
            pagesSection.MasterPageFile)

        ' Set the MasterPageFile property to "MyMasterPage.ascx".
        pagesSection.MasterPageFile = "MyMasterPage.ascx"

        ' Get the current Buffer property value.
        Console.WriteLine( _
            "Current Buffer value: '{0}'", pagesSection.Buffer)

        ' Set the Buffer property to true.
        pagesSection.Buffer = True

        ' Get all current TagMappings in the collection.
        Dim k As Int32
        For k = 1 To pagesSection.TagMapping.Count
          Console.WriteLine("TagMapping {0}:", i)
          Console.WriteLine("  TagTypeName = '{0}'", _
           pagesSection.TagMapping(k).TagType)
          Console.WriteLine("  MappedTagTypeName = '{0}'", _
           pagesSection.TagMapping(k).MappedTagType)
        Next

        ' Add a TagMapInfo object using a constructor.
        pagesSection.TagMapping.Add( _
         New System.Web.Configuration.TagMapInfo( _
         "MyNameSpace.MyControl", "MyNameSpace.MyOtherControl"))

        ' Get the current PageBaseType property value.
        Console.WriteLine( _
            "Current PageBaseType value: '{0}'", pagesSection.PageBaseType)

        ' Set the PageBaseType property to
        ' "MyNameSpace.MyCustomPagelBaseType".
        pagesSection.PageBaseType = "MyNameSpace.MyCustomPagelBaseType"

        ' Get the current SmartNavigation property value.
        Console.WriteLine( _
            "Current SmartNavigation value: '{0}'", pagesSection.SmartNavigation)

        ' Set the SmartNavigation property to true.
        pagesSection.SmartNavigation = True

        ' Update if not locked.
        If Not pagesSection.SectionInformation.IsLocked Then
          configuration.Save()
          Console.WriteLine("** Configuration updated.")
        Else
          Console.WriteLine("** Could not update, section is locked.")
        End If
      Catch e As System.Exception
        ' Unknown error.
        Console.WriteLine("A unknown exception detected in " & _
        "UsingPagesSection Main.")
        Console.WriteLine(e)
      End Try
      Console.ReadLine()
    End Sub
  End Class
End Namespace ' Samples.Aspnet.SystemWebConfiguration

Observações

A PagesSection classe oferece uma forma de aceder programaticamente e modificar o conteúdo da secção das páginas do ficheiro de configuração. Esta secção de configuração suporta a definição global de certas diretivas de página e controlo ASP.NET para todas as páginas e controlos no âmbito do ficheiro de configuração. Isto inclui a @ Page diretiva, a @ Import diretiva através da Namespaces propriedade de cobrança e a @ Register diretiva através da Controls propriedade de cobrança. Também oferece suporte para mapear tipos de etiquetas para outros tipos de etiquetas em tempo de execução através da TagMapping propriedade de coleção.

As diretivas especificam as definições usadas pelos compiladores de página e controlo de utilizador quando processam ASP.NET Web Forms ficheiros de página (.aspx) e de controlo de utilizador (.ascx).

Ver também

• ConfigurationSection
• Diretivas para Páginas de Formulários Web