RoleProviderCollection RoleProviderCollection RoleProviderCollection RoleProviderCollection Class

定义

继承 RoleProvider 抽象类的对象的集合。A collection of objects that inherit the RoleProvider abstract class.

public ref class RoleProviderCollection sealed : System::Configuration::Provider::ProviderCollection
public sealed class RoleProviderCollection : System.Configuration.Provider.ProviderCollection
type RoleProviderCollection = class
    inherit ProviderCollection
Public NotInheritable Class RoleProviderCollection
Inherits ProviderCollection
继承
RoleProviderCollectionRoleProviderCollectionRoleProviderCollectionRoleProviderCollection

示例

下面的代码示例列出了为应用程序以及其各自的类型启用的提供程序。The following code example lists the providers enabled for an application and their respective types.

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Web.Security" %>
<%@ Import Namespace="System.Configuration.Provider" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>List Enabled Providers</title>
</head>
<body>

<%
foreach (RoleProvider p in Roles.Providers)
  Response.Write(p.Name + ", " + p.GetType() + "<br />");
%>

</body>
</html>
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Web.Security" %>
<%@ Import Namespace="System.Configuration.Provider" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>List Enabled Providers</title>
</head>
<body>

<%
For Each p As RoleProvider In Roles.Providers
  Response.Write(p.Name & ", " & p.GetType().ToString() & "<br />")
Next
%>

</body>
</html>

注解

应用程序的角色提供程序是RoleProviderCollection ProvidersRoles类的属性以只读方式公开的。The role providers for an application are exposed as a read-only RoleProviderCollection by the Providers property of the Roles class. 您可以按名称访问集合中的特定角色提供程序, 并将其转换为特定的提供程序类型SqlRoleProvider(如)。You can access a specific role provider in the collection by name and cast it as the specific provider type, such as SqlRoleProvider. 这使你能够在单个应用程序中管理多个数据存储区中的角色信息, 以及访问不属于RoleProvider抽象类的角色提供程序的自定义成员。This enables you to manage role information from multiple data stores in a single application as well as access custom members of a role provider that are not part of the RoleProvider abstract class.

构造函数

RoleProviderCollection() RoleProviderCollection() RoleProviderCollection() RoleProviderCollection()

创建一个新的空角色提供程序集合。Creates a new, empty role-provider collection.

属性

Count Count Count Count

获取集合中提供程序的数目。Gets the number of providers in the collection.

(Inherited from ProviderCollection)
IsSynchronized IsSynchronized IsSynchronized IsSynchronized

获取一个值,该值指示对集合的访问是否为同步的(线程安全)。Gets a value indicating whether access to the collection is synchronized (thread safe).

(Inherited from ProviderCollection)
Item[String] Item[String] Item[String] Item[String]

获取集合中由指定的提供程序名称引用的角色提供程序。Gets the role provider in the collection referenced by the specified provider name.

SyncRoot SyncRoot SyncRoot SyncRoot

获取当前对象。Gets the current object.

(Inherited from ProviderCollection)

方法

Add(ProviderBase) Add(ProviderBase) Add(ProviderBase) Add(ProviderBase)

将一个角色提供程序添加到该集合中。Adds a role provider to the collection.

Clear() Clear() Clear() Clear()

从集合中移除所有项。Removes all items from the collection.

(Inherited from ProviderCollection)
CopyTo(ProviderBase[], Int32) CopyTo(ProviderBase[], Int32) CopyTo(ProviderBase[], Int32) CopyTo(ProviderBase[], Int32)

从指定索引处开始,将集合中的内容复制到给定数组。Copies the contents of the collection to the given array starting at the specified index.

(Inherited from ProviderCollection)
CopyTo(RoleProvider[], Int32) CopyTo(RoleProvider[], Int32) CopyTo(RoleProvider[], Int32) CopyTo(RoleProvider[], Int32)

将角色提供程序集合复制到一维数组中。Copies the role provider collection to a one-dimensional array.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetEnumerator() GetEnumerator() GetEnumerator() GetEnumerator()

返回一个对象,该对象实现 IEnumerator 接口以循环访问集合。Returns an object that implements the IEnumerator interface to iterate through the collection.

(Inherited from ProviderCollection)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

作为默认哈希函数。Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

获取当前实例的 TypeGets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(Inherited from Object)
Remove(String) Remove(String) Remove(String) Remove(String)

从集合中移除提供程序。Removes a provider from the collection.

(Inherited from ProviderCollection)
SetReadOnly() SetReadOnly() SetReadOnly() SetReadOnly()

将集合设置为只读。Sets the collection to be read-only.

(Inherited from ProviderCollection)
ToString() ToString() ToString() ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(Inherited from Object)

显式界面实现

ICollection.CopyTo(Array, Int32) ICollection.CopyTo(Array, Int32) ICollection.CopyTo(Array, Int32) ICollection.CopyTo(Array, Int32)

ProviderCollection 的元素复制到一个数组中从特定的数组索引开始的位置。Copies the elements of the ProviderCollection to an array, starting at a particular array index.

(Inherited from ProviderCollection)

扩展方法

Cast<TResult>(IEnumerable) Cast<TResult>(IEnumerable) Cast<TResult>(IEnumerable) Cast<TResult>(IEnumerable)

IEnumerable 的元素强制转换为指定的类型。Casts the elements of an IEnumerable to the specified type.

OfType<TResult>(IEnumerable) OfType<TResult>(IEnumerable) OfType<TResult>(IEnumerable) OfType<TResult>(IEnumerable)

根据指定类型筛选 IEnumerable 的元素。Filters the elements of an IEnumerable based on a specified type.

AsParallel(IEnumerable) AsParallel(IEnumerable) AsParallel(IEnumerable) AsParallel(IEnumerable)

启用查询的并行化。Enables parallelization of a query.

AsQueryable(IEnumerable) AsQueryable(IEnumerable) AsQueryable(IEnumerable) AsQueryable(IEnumerable)

IEnumerable 转换为 IQueryableConverts an IEnumerable to an IQueryable.

适用于

另请参阅