ConfigurationSectionGroupCollection Třída

Definice

Obor názvů:

System.Configuration

Sestavení:

System.Configuration.ConfigurationManager.dll

Zdroj:

ConfigurationSectionGroupCollection.cs

Představuje kolekci ConfigurationSectionGroup objektů.

public ref class ConfigurationSectionGroupCollection sealed : System::Collections::Specialized::NameObjectCollectionBase

public sealed class ConfigurationSectionGroupCollection : System.Collections.Specialized.NameObjectCollectionBase

type ConfigurationSectionGroupCollection = class
    inherit NameObjectCollectionBase

Public NotInheritable Class ConfigurationSectionGroupCollection
Inherits NameObjectCollectionBase

Dědičnost

Object

NameObjectCollectionBase

ConfigurationSectionGroupCollection

Příklady

Následující příklad kódu ukazuje, jak používat ConfigurationSectionGroupCollection třídu.

using System;
using System.Configuration;
using System.Collections;

namespace Samples.Config
{

    // Define a custom section.
    public sealed class CustomSection :
        ConfigurationSection
    {

        public CustomSection()
        { }

        [ConfigurationProperty("fileName", DefaultValue = "default.txt",
            IsRequired = true, IsKey = false)]
        [StringValidator(InvalidCharacters = " ~!@#$%^&*()[]{}/;'\"|\\",
            MinLength = 1, MaxLength = 60)]
        public string FileName
        {
            get
            {
                return (string)this["fileName"];
            }
            set
            {
                this["fileName"] = value;
            }
        }
      
        [ConfigurationProperty("maxUsers", DefaultValue = (long)10000,
            IsRequired = false)]
        [LongValidator(MinValue = 1, MaxValue = 10000000,
            ExcludeRange = false)]
        public long MaxUsers
        {
            get
            {
                return (long)this["maxUsers"];
            }
            set
            {
                this["maxUsers"] = value;
            }
        }
       
        [ConfigurationProperty("maxIdleTime",
            DefaultValue = "0:10:0",
            IsRequired = false)]
        [TimeSpanValidator(MinValueString = "0:0:30",
            MaxValueString = "5:00:0",
            ExcludeRange = false)]
        public TimeSpan MaxIdleTime
        {
            get
            {
                return (TimeSpan)this["maxIdleTime"];
            }
            set
            {
                this["maxIdleTime"] = value;
            }
        }
    }

    // Define a custom section group.
    public sealed class CustomSectionGroup :
        ConfigurationSectionGroup
    {

        public CustomSectionGroup()
        {
        }

        public CustomSection Custom
        {
            get { return (CustomSection) 
                Sections.Get("CustomSection");}
        }
    }

    class UsingCustomSectionGroupCollection
    {

        // Create a custom section group.
        static void CreateSectionGroup()
        {
            try
            {

                CustomSectionGroup customSectionGroup;
     
                // Get the current configuration file.
                System.Configuration.Configuration config =
                        ConfigurationManager.OpenExeConfiguration(
                        ConfigurationUserLevel.None);

                // Create the section group entry  
                // in the <configSections> and the 
                // related target section in <configuration>.
                if (config.SectionGroups["CustomGroup"] == null)
                {
                    customSectionGroup = new CustomSectionGroup();
                    config.SectionGroups.Add("CustomGroup", 
                        customSectionGroup);
                    customSectionGroup.ForceDeclaration(true);
                    config.Save(ConfigurationSaveMode.Full);
                }
            }
            catch (ConfigurationErrorsException err)
            {
                Console.WriteLine(err.ToString());
            }
        }

        // Get the collection group keys i.e.,
        // the group names.
        //static void GetAllKeys()
        //{

        //    try
        //    {
        //        System.Configuration.Configuration config =
        //        ConfigurationManager.OpenExeConfiguration(
        //        ConfigurationUserLevel.None);

        //        ConfigurationSectionGroupCollection groups =
        //            config.SectionGroups;
        //        groups.
        //        foreach (string name in groups.AllKeys)
        //        {
        //            Console.WriteLine(
        //             "Key value: {0}", name);
        //        }

        //    }
        //    catch (ConfigurationErrorsException err)
        //    {
        //        Console.WriteLine(err.ToString());
        //    }
        //}

        static void Clear()
        {

            try
            {
                System.Configuration.Configuration config =
                ConfigurationManager.OpenExeConfiguration(
                ConfigurationUserLevel.None);

                config.SectionGroups.Clear();

                config.Save(ConfigurationSaveMode.Full);
            }
            catch (ConfigurationErrorsException err)
            {
                Console.WriteLine(err.ToString());
            }
        }

        static void GetGroup()
        {

            try
            {
                System.Configuration.Configuration config =
                ConfigurationManager.OpenExeConfiguration(
                ConfigurationUserLevel.None);

                ConfigurationSectionGroup customGroup =
                    config.SectionGroups.Get("CustomGroup");

                if (customGroup == null)
                    Console.WriteLine(
                        "Failed to load CustomSection.");
                else
                {
                    // Display section information
                    Console.WriteLine("Section group name:       {0}",
                        customGroup.SectionGroupName);
                    Console.WriteLine("Name:       {0}",
                        customGroup.Name);
                    Console.WriteLine("Type:   {0}",
                        customGroup.Type);
                }
            }
            catch (ConfigurationErrorsException err)
            {
                Console.WriteLine(err.ToString());
            }
        }

        static void GetEnumerator()
        {

            try
            {
                System.Configuration.Configuration config =
                ConfigurationManager.OpenExeConfiguration(
                ConfigurationUserLevel.None);

                ConfigurationSectionGroupCollection groups =
                    config.SectionGroups;

                IEnumerator groupEnum =
                    groups.GetEnumerator();

                int i = 0;
                while (groupEnum.MoveNext())
                {
                    string groupName = groups.GetKey(i);
                    Console.WriteLine(
                        "Group name: {0}", groupName);
                    i += 1;
                }
            }
            catch (ConfigurationErrorsException err)
            {
                Console.WriteLine(err.ToString());
            }
        }

        // Get the collection keys i.e., the
        // group names.
        static void GetKeys()
        {

            try
            {
                System.Configuration.Configuration config =
                ConfigurationManager.OpenExeConfiguration(
                ConfigurationUserLevel.None);

                ConfigurationSectionGroupCollection groups =
                    config.SectionGroups;

                foreach (string key in groups.Keys)
                {

                    Console.WriteLine(
                     "Key value: {0}", key);
                }
            }
            catch (ConfigurationErrorsException err)
            {
                Console.WriteLine(err.ToString());
            }
        }


        static void GetItems()
        {

            try
            {
                System.Configuration.Configuration config =
                 ConfigurationManager.OpenExeConfiguration(
                 ConfigurationUserLevel.None);

                ConfigurationSectionGroupCollection groups =
                    config.SectionGroups;

                ConfigurationSectionGroup group1 =
                    groups.Get("system.net");

                ConfigurationSectionGroup group2 =
                groups.Get("system.web");

                Console.WriteLine(
                     "Group1: {0}", group1.Name);

                Console.WriteLine(
                    "Group2: {0}", group2.Name);
            }
            catch (ConfigurationErrorsException err)
            {
                Console.WriteLine(err.ToString());
            }
        }


        static void Remove()
        {

            try
            {
 
                System.Configuration.Configuration config =
                    ConfigurationManager.OpenExeConfiguration(
                   ConfigurationUserLevel.None);

                ConfigurationSectionGroup customGroup =
                    config.SectionGroups.Get("CustomGroup");

                if (customGroup != null)
                {
                    config.SectionGroups.Remove("CustomGroup");
                    config.Save(ConfigurationSaveMode.Full);
                }
                else
                    Console.WriteLine(
                        "CustomGroup does not exists.");
            }
            catch (ConfigurationErrorsException err)
            {
                Console.WriteLine(err.ToString());
            }
        }

        // Add custom section to the group.
        static void AddSection()
        {
            try
            {

                CustomSection customSection;

                // Get the current configuration file.
                System.Configuration.Configuration config =
                        ConfigurationManager.OpenExeConfiguration(
                        ConfigurationUserLevel.None);

                // Create the section entry  
                // in the <configSections> and the 
                // related target section in <configuration>.
                ConfigurationSectionGroup customGroup;
                customGroup = config.SectionGroups.Get("CustomGroup");

                if (customGroup.Sections.Get("CustomSection") == null)
                {
                    customSection = new CustomSection();
                    customGroup.Sections.Add("CustomSection",
                        customSection);
                    customSection.SectionInformation.ForceSave = true;
                    config.Save(ConfigurationSaveMode.Full);
                }
            }
            catch (ConfigurationErrorsException err)
            {
                Console.WriteLine(err.ToString());
            }
        }

        // Exercise the collection.
        // Uncomment the function you want to exercise.
        // Start with CreateSectionGroup().
        static void Main(string[] args)
        {
            CreateSectionGroup();
            AddSection();
            // GetAllKeys();
            // GetGroup();
            
            // GetEnumerator();
            
            // GetKeys();
            
            // GetItems();

            // Remove();
            // Clear();
        }
    }
}

Imports System.Configuration
Imports System.Collections


' Define a custom section.
NotInheritable Public Class CustomSection
   Inherits ConfigurationSection
   
   
   Public Sub New()
   End Sub
   
    <ConfigurationProperty("fileName", _
    DefaultValue:="default.txt", _
    IsRequired:=True, _
    IsKey:=False), _
    StringValidator( _
    InvalidCharacters:=" ~!@#$%^&*()[]{}/;'""|\", _
    MinLength:=1, _
    MaxLength:=60)> _
    Public Property FileName() As String
        Get
            Return CStr(Me("fileName"))
        End Get
        Set(ByVal value As String)
            Me("fileName") = value
        End Set
    End Property

    <ConfigurationProperty("maxUsers", _
    DefaultValue:=10000, _
    IsRequired:=False), _
    LongValidator(MinValue:=1, _
    MaxValue:=10000000, _
    ExcludeRange:=False)> _
   Public Property MaxUsers() As Long
        Get
            Return Fix(Me("maxUsers"))
        End Get
        Set(ByVal value As Long)
            Me("maxUsers") = value
        End Set
    End Property

    <ConfigurationProperty("maxIdleTime", _
    DefaultValue:="0:10:0", _
    IsRequired:=False), _
    TimeSpanValidator(MinValueString:="0:0:30", _
    MaxValueString:="5:00:0", _
    ExcludeRange:=False)> _
    Public Property MaxIdleTime() As TimeSpan
        Get
            Return CType(Me("maxIdleTime"), TimeSpan)
        End Get
        Set(ByVal value As TimeSpan)
            Me("maxIdleTime") = value
        End Set
    End Property

End Class

' Define a custom section group.

NotInheritable Public Class CustomSectionGroup
   Inherits ConfigurationSectionGroup
   
   
   Public Sub New()
   End Sub

   
   Public ReadOnly Property Custom() As CustomSection
      Get
            Return CType(Sections.Get("CustomSection"), _
            CustomSection)
      End Get
    End Property

End Class


Class UsingCustomSectionGroupCollection

   
   ' Create a custom section group.
   Shared Sub CreateSectionGroup()
      Try
         
         Dim customSectionGroup As CustomSectionGroup
         
         ' Get the current configuration file.
            Dim config As System.Configuration.Configuration = _
            ConfigurationManager.OpenExeConfiguration( _
            ConfigurationUserLevel.None)
         
         ' Create the section group entry  
         ' in the <configSections> and the 
         ' related target section in <configuration>.
         If config.SectionGroups("CustomGroup") Is Nothing Then
            customSectionGroup = New CustomSectionGroup()
            config.SectionGroups.Add("CustomGroup", customSectionGroup)
            customSectionGroup.ForceDeclaration(True)
            config.Save(ConfigurationSaveMode.Full)
         End If
      
      Catch err As ConfigurationErrorsException
         Console.WriteLine(err.ToString())
      End Try
   End Sub
    
   
   ' Get the collection group keys i.e.,
   ' the group names.
    'Shared Sub GetAllKeys()

    '   Try
    '         Dim config _
    '         As System.Configuration.Configuration = _
    '         ConfigurationManager.OpenExeConfiguration( _
    '         ConfigurationUserLevel.None)

    '         Dim groups _
    '         As ConfigurationSectionGroupCollection = _
    '         config.SectionGroups

    '      Dim name As String
    '      For Each name In  groups.AllKeys
    '         Console.WriteLine("Key value: {0}", name)
    '      Next name


    '   Catch err As ConfigurationErrorsException
    '      Console.WriteLine(err.ToString())
    '   End Try
    'End Sub
   
   Shared Sub Clear()
      
      Try
            Dim config _
            As System.Configuration.Configuration = _
            ConfigurationManager.OpenExeConfiguration( _
            ConfigurationUserLevel.None)


         config.SectionGroups.Clear()
         
         config.Save(ConfigurationSaveMode.Full)
      Catch err As ConfigurationErrorsException
         Console.WriteLine(err.ToString())
      End Try
   End Sub
   

   Shared Sub GetGroup()
      
      Try
            Dim config _
            As System.Configuration.Configuration = _
            ConfigurationManager.OpenExeConfiguration( _
            ConfigurationUserLevel.None)

            Dim groups _
            As ConfigurationSectionGroupCollection = _
            config.SectionGroups

            Dim customGroup _
            As ConfigurationSectionGroup = _
            groups.Get("CustomGroup")
         
         
         If customGroup Is Nothing Then
                Console.WriteLine( _
                "Failed to load CustomGroup.")
         Else
            ' Display section information
                Console.WriteLine("Name:       {0}", _
                customGroup.Name)
                Console.WriteLine("Type:   {0}", _
                customGroup.Type)
         End If
      
      
      Catch err As ConfigurationErrorsException
         Console.WriteLine(err.ToString())
      End Try
   End Sub
   

   Shared Sub GetEnumerator()
      
      Try
            Dim config _
            As System.Configuration.Configuration = _
            ConfigurationManager.OpenExeConfiguration( _
            ConfigurationUserLevel.None)

            Dim groups _
            As ConfigurationSectionGroupCollection = _
            config.SectionGroups

            Dim groupEnum As IEnumerator = _
            groups.GetEnumerator()
         
         Dim i As Integer = 0
         While groupEnum.MoveNext()
            Dim groupName As String = groups.GetKey(i)
            Console.WriteLine("Group name: {0}", groupName)
            i += 1
         End While

      Catch err As ConfigurationErrorsException
         Console.WriteLine(err.ToString())
      End Try
   End Sub
   
   
   ' Get the collection keys i.e., the
   ' group names.
   Shared Sub GetKeys()
      
      Try
            Dim config _
          As System.Configuration.Configuration = _
          ConfigurationManager.OpenExeConfiguration( _
          ConfigurationUserLevel.None)

            Dim groups _
            As ConfigurationSectionGroupCollection = _
            config.SectionGroups

         Dim key As String
         For Each key In  groups.Keys
            
            Console.WriteLine("Key value: {0}", key)
         Next key
      
      
      Catch err As ConfigurationErrorsException
         Console.WriteLine(err.ToString())
      End Try
   End Sub
      

   Shared Sub GetItems()
      
      Try
            Dim config _
        As System.Configuration.Configuration = _
        ConfigurationManager.OpenExeConfiguration( _
        ConfigurationUserLevel.None)

            Dim groups _
            As ConfigurationSectionGroupCollection = _
            config.SectionGroups

            Dim group1 As ConfigurationSectionGroup = _
            groups.Get("system.net")
         
            Dim group2 As ConfigurationSectionGroup = _
            groups.Get("system.web")
         
         
         Console.WriteLine("Group1: {0}", group1.Name)
         
         Console.WriteLine("Group2: {0}", group2.Name)
      
      Catch err As ConfigurationErrorsException
         Console.WriteLine(err.ToString())
      End Try
   End Sub


   Shared Sub Remove()
      
      Try
         
            Dim config _
        As System.Configuration.Configuration = _
        ConfigurationManager.OpenExeConfiguration( _
        ConfigurationUserLevel.None)

            Dim groups _
            As ConfigurationSectionGroupCollection = _
            config.SectionGroups

            Dim customGroup _
            As ConfigurationSectionGroup = groups.Get("CustomGroup")
         
         If Not (customGroup Is Nothing) Then
            config.SectionGroups.Remove("CustomGroup")
            config.Save(ConfigurationSaveMode.Full)
         Else
                Console.WriteLine( _
                "CustomGroup does not exists.")
         End If
      
      Catch err As ConfigurationErrorsException
         Console.WriteLine(err.ToString())
      End Try
   End Sub
   
   
   
   ' Add custom section to the group.
   Shared Sub AddSection()
      Try
         
         Dim customSection As CustomSection
         
         ' Get the current configuration file.
            Dim config _
     As System.Configuration.Configuration = _
     ConfigurationManager.OpenExeConfiguration( _
     ConfigurationUserLevel.None)

            Dim groups _
            As ConfigurationSectionGroupCollection = _
            config.SectionGroups

         ' Create the section entry  
         ' in the <configSections> and the 
         ' related target section in <configuration>.
         Dim customGroup As ConfigurationSectionGroup
            customGroup = groups.Get("CustomGroup")
         
            If customGroup.Sections.Get( _
            "CustomSection") Is Nothing Then
                customSection = New CustomSection()
                customGroup.Sections.Add( _
                "CustomSection", customSection)
                customSection.SectionInformation.ForceSave = True
                config.Save(ConfigurationSaveMode.Full)
            End If
      Catch err As ConfigurationErrorsException
         Console.WriteLine(err.ToString())
      End Try
   End Sub
   
   
   ' Exercise the collection.
   ' Uncomment the function you want to exercise.
    ' Start with CreateSectionGroup().
    Public Overloads Shared Sub Main(ByVal args() As String)
        CreateSectionGroup()
        AddSection()
        ' GetEnumerator();
        ' GetKeys();
        ' GetItems();
        ' Remove();
        ' Clear();

    End Sub
End Class

Následující příklad je výňatek konfiguračního souboru použitého v předchozím příkladu.

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <section name="CustomSection"
      type="Samples.AspNet.Configuration.CustomSection, ConfigurationSectionCollection, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" allowDefinition="Everywhere" allowExeDefinition="MachineToApplication" restartOnExternalChanges="true" />
  /configSections>

<CustomSection fileName="default.txt" maxUsers="1000"
  maxIdleTime="00:05:00" />

</configuration>

Poznámky

ConfigurationSectionGroupCollection Pomocí třídy iterovat kolekci ConfigurationSectionGroup objektů. K této kolekci objektů můžete přistupovat pomocí SectionGroups vlastnosti nebo SectionGroups vlastnosti.

Třída ConfigurationSectionGroupCollection se také používá při vytváření vlastních typů, které rozšiřují ConfigurationSectionGroup třídu.

Vlastnosti

Name	Description
Count	Získá počet skupin oddílů v kolekci.
Item[Int32]	ConfigurationSectionGroup Získá objekt, jehož index je zadán z kolekce.
Item[String]	ConfigurationSectionGroup Získá objekt, jehož název je zadán z kolekce.
Keys	Získá klíče pro všechny ConfigurationSectionGroup objekty obsažené v tomto ConfigurationSectionGroupCollection objektu.

Metody

Name	Description
Add(String, ConfigurationSectionGroup)	ConfigurationSectionGroup Přidá objekt do tohoto ConfigurationSectionGroupCollection objektu.
Clear()	Vymaže kolekci.
CopyTo(ConfigurationSectionGroup[], Int32)	Zkopíruje tento ConfigurationSectionGroupCollection objekt do pole.
Get(Int32)	Získá zadaný ConfigurationSectionGroup objekt obsažený v kolekci.
Get(String)	Získá zadaný ConfigurationSectionGroup objekt z kolekce.
GetEnumerator()	Získá enumerátor, který může iterovat přes ConfigurationSectionGroupCollection objekt.
GetKey(Int32)	Získá klíč zadaného ConfigurationSectionGroup objektu obsaženého v tomto ConfigurationSectionGroupCollection objektu.
GetObjectData(SerializationInfo, StreamingContext)	Zastaralé. Používá se systémem během serializace.
Remove(String)	Odebere objekt, ConfigurationSectionGroup jehož název je zadán z tohoto ConfigurationSectionGroupCollection objektu.
RemoveAt(Int32)	Odebere objekt, ConfigurationSectionGroup jehož index je zadán z tohoto ConfigurationSectionGroupCollection objektu.

Viz také

• ConfigurationSectionGroup
• ConfigurationSectionCollection
• ConfigurationSection