CommaDelimitedStringCollection 类

定义

命名空间:

System.Configuration

程序集:

System.Configuration.ConfigurationManager.dll

包:

System.Configuration.ConfigurationManager v8.0.0

Source:

StringAttributeCollection.cs

表示用逗号分隔的字符串元素的集合。 此类不能被继承。

public ref class CommaDelimitedStringCollection sealed : System::Collections::Specialized::StringCollection

public sealed class CommaDelimitedStringCollection : System.Collections.Specialized.StringCollection

type CommaDelimitedStringCollection = class
    inherit StringCollection

Public NotInheritable Class CommaDelimitedStringCollection
Inherits StringCollection

继承

Object

StringCollection

CommaDelimitedStringCollection

示例

下面的代码示例演示如何使用 CommaDelimitedStringCollection 类型。

using System;
using System.Collections.Generic;
using System.Text;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Configuration;
using System.Collections.Specialized;

namespace Samples.AspNet.Config
{
  class CommaDelimitedStrCollection
  {
    static void Main(string[] args)
    {
      // Display title and info.
      Console.WriteLine("ASP.NET Configuration Info");
      Console.WriteLine("Type: CommaDelimitedStringCollection");
      Console.WriteLine();

      // Set the path of the config file.
      string configPath = "/aspnet";

      // Get the Web application configuration object.
      Configuration config = 
        WebConfigurationManager.OpenWebConfiguration(configPath);

      // Get the section related object.
      AuthorizationSection configSection =
        (AuthorizationSection)config.GetSection("system.web/authorization");

      // Get the authorization rule collection.
      AuthorizationRuleCollection authorizationRuleCollection = 
        configSection.Rules;

      // Create a CommaDelimitedStringCollection object.
      CommaDelimitedStringCollection myStrCollection =
        new CommaDelimitedStringCollection();

      for (int i = 0; i < authorizationRuleCollection.Count; i++)
      {
        if (authorizationRuleCollection.Get(i).Action.ToString().ToLower() 
          == "allow")
        {
          // Add values to the CommaDelimitedStringCollection object.
          myStrCollection.AddRange(
            authorizationRuleCollection.Get(i).Users.ToString().Split(
            ",".ToCharArray()));
        }
      }

      Console.WriteLine("Allowed Users: {0}",
        myStrCollection.ToString());

      // Count the elements in the collection.
      Console.WriteLine("Allowed User Count: {0}", 
        myStrCollection.Count);

      // Call the Contains method.
      Console.WriteLine("Contains 'userName1': {0}",
        myStrCollection.Contains("userName1"));

      // Determine the index of an element
      // in the collection.
      Console.WriteLine("IndexOf 'userName0': {0}",
        myStrCollection.IndexOf("userName0"));

      // Call IsModified.
      Console.WriteLine("IsModified: {0}",
        myStrCollection.IsModified);

      // Call IsReadyOnly.
      Console.WriteLine("IsReadOnly: {0}",
        myStrCollection.IsReadOnly);

      Console.WriteLine();
      Console.WriteLine("Add a user name to the collection.");
      // Insert a new element in the collection.
      myStrCollection.Insert(myStrCollection.Count, "userNameX");

      Console.WriteLine("Collection Value: {0}",
        myStrCollection.ToString());

      Console.WriteLine();
      Console.WriteLine("Remove a user name from the collection.");
      // Remove an element of the collection.
      myStrCollection.Remove("userNameX");

      Console.WriteLine("Collection Value: {0}",
        myStrCollection.ToString());

      // Display and wait
      Console.ReadLine();
    }
  }
}

Imports System.Collections.Generic
Imports System.Text
Imports System.Configuration
Imports System.Collections
Imports System.Web
Imports System.Web.Configuration
Imports System.Collections.Specialized

Namespace Samples.AspNet.Config
  Class CommaDelimitedStrCollection
    Shared Sub Main(ByVal args() As String)
      ' Display title and info.
      Console.WriteLine("ASP.NET Configuration Info")
      Console.WriteLine("Type: CommaDelimitedStringCollection")
      Console.WriteLine()

      ' Set the path of the config file.
      Dim configPath As String = "/aspnet"

      ' Get the Web application configuration object.
      Dim config As Configuration = _
      WebConfigurationManager.OpenWebConfiguration(configPath)

      ' Get the section related object.
      Dim configSection As AuthorizationSection = _
      CType(config.GetSection("system.web/authorization"), AuthorizationSection)

      ' Get the authorization rule collection.
      Dim authorizationRuleCollection As AuthorizationRuleCollection = _
      configSection.Rules()

      ' Create a CommaDelimitedStringCollection object.
      Dim myStrCollection As CommaDelimitedStringCollection = _
        New CommaDelimitedStringCollection()

      Dim i As Integer
      For i = 0 To authorizationRuleCollection.Count - 1 Step i + 1
        If authorizationRuleCollection.Get(i).Action.ToString().ToLower() _
          = "allow" Then
          ' Add values to the CommaDelimitedStringCollection object.
          myStrCollection.AddRange( _
            authorizationRuleCollection.Get(i).Users.ToString().Split( _
            ",".ToCharArray()))
        End If
      Next

      Console.WriteLine("Allowed Users: {0}", _
        myStrCollection.ToString())

      ' Count the elements in the collection.
      Console.WriteLine("Allowed User Count: {0}", _
        myStrCollection.Count)

      ' Call the Contains method.
      Console.WriteLine("Contains 'userName1': {0}", _
        myStrCollection.Contains("userName1"))

      ' Determine the index of an element
      ' in the collection.
      Console.WriteLine("IndexOf 'userName0': {0}", _
        myStrCollection.IndexOf("userName0"))

      ' Call IsModified.
      Console.WriteLine("IsModified: {0}", _
        myStrCollection.IsModified)

      ' Call IsReadyOnly.
      Console.WriteLine("IsReadOnly: {0}", _
        myStrCollection.IsReadOnly)

      Console.WriteLine()
      Console.WriteLine("Add a user name to the collection.")
      ' Insert a new element in the collection.
      myStrCollection.Insert(myStrCollection.Count, "userNameX")

      Console.WriteLine("Collection Value: {0}", _
        myStrCollection.ToString())

      Console.WriteLine()
      Console.WriteLine("Remove a user name from the collection.")
      ' Remove an element of the collection.
      myStrCollection.Remove("userNameX")

      Console.WriteLine("Collection Value: {0}", _
        myStrCollection.ToString())

      ' Display and wait
      Console.ReadLine()
    End Sub
  End Class
End Namespace

注解

此类表示序列化为以逗号分隔的字符串元素列表的字符串集合。

构造函数

CommaDelimitedStringCollection()

创建 CommaDelimitedStringCollection 类的新实例。

属性

Count	获取 StringCollection 中包含的字符串的数目。 (继承自 StringCollection)
IsModified	获取一个值，该值指示集合是否已修改。
IsReadOnly	获取一个值，该值指示集合对象是否为只读。
IsSynchronized	获取一个值，该值指示是否同步对 StringCollection 的访问（线程安全）。 (继承自 StringCollection)
Item[Int32]	根据索引获取或设置集合中的字符串元素。
SyncRoot	获取可用于同步对 StringCollection 的访问的对象。 (继承自 StringCollection)

方法

Add(String)	向以逗号分隔的集合添加一个字符串。
AddRange(String[])	将字符串数组中的所有字符串添加到集合中。
Clear()	清除集合。
Clone()	创建集合的一个副本。
Contains(String)	确定指定的字符串是否在 StringCollection 中。 (继承自 StringCollection)
CopyTo(String[], Int32)	从目标数组的指定索引处开始，将全部 StringCollection 值复制到一维字符串数组中。 (继承自 StringCollection)
Equals(Object)	确定指定对象是否等于当前对象。 (继承自 Object)
GetEnumerator()	返回循环访问 StringEnumerator 的 StringCollection。 (继承自 StringCollection)
GetHashCode()	作为默认哈希函数。 (继承自 Object)
GetType()	获取当前实例的 Type。 (继承自 Object)
IndexOf(String)	搜索指定的字符串并返回 StringCollection 内的第一个匹配项的从零开始的索引。 (继承自 StringCollection)
Insert(Int32, String)	将一个字符串元素添加到集合中的指定索引位置。
MemberwiseClone()	创建当前 Object 的浅表副本。 (继承自 Object)
Remove(String)	从集合中移除一个字符串元素。
RemoveAt(Int32)	移除 StringCollection 的指定索引处的字符串。 (继承自 StringCollection)
SetReadOnly()	将集合对象设置为只读。
ToString()	返回对象的字符串表示形式。

扩展方法

另请参阅

• StringCollection