DesignTimeResourceProviderFactoryAttribute 类

参考

定义

命名空间:: System.Web.Compilation

程序集:: System.Web.dll

重要

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指定设计时的资源提供程序工厂的类型。此类不能被继承。

public ref class DesignTimeResourceProviderFactoryAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Class)]
public sealed class DesignTimeResourceProviderFactoryAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Class)>]
type DesignTimeResourceProviderFactoryAttribute = class
    inherit Attribute

Public NotInheritable Class DesignTimeResourceProviderFactoryAttribute
Inherits Attribute

继承: Object

Attribute
DesignTimeResourceProviderFactoryAttribute

属性: AttributeUsageAttribute

示例

下面的代码示例演示一个自定义的资源提供程序工厂，该工厂通过 DesignTimeResourceProviderFactoryAttribute 属性指定自定义的设计时资源提供程序工厂。此示例不包括实现自定义设计时资源提供程序工厂所需的代码。

namespace CustomResourceProviders
{
    using System;
    using System.Collections.Generic;
    using System.Text;
    using System.Web.Compilation;
    using System.Resources;
    using System.Globalization;
    using System.Collections;
    using System.Reflection;
    using System.Web.UI.Design;

    [
        DesignTimeResourceProviderFactoryAttribute(
            typeof(CustomDesignTimeResourceProviderFactory))
    ]
    public class CustomResourceProviderFactory : ResourceProviderFactory
    {
        public override IResourceProvider
          CreateGlobalResourceProvider(string classname)
        {
            return new CustomResourceProvider(null, classname);
        }
        public override IResourceProvider
          CreateLocalResourceProvider(string virtualPath)
        {
            return new CustomResourceProvider(virtualPath, null);
        }
    }

    // Define the resource provider for global and local resources.
    internal class CustomResourceProvider : IResourceProvider
    {
        string _virtualPath;
        string _className;

        public CustomResourceProvider(string virtualPath, string classname)
        {
            _virtualPath = virtualPath;
            _className = classname;
        }

        private IDictionary GetResourceCache(string culturename)
        {
            return (IDictionary)
                System.Web.HttpContext.Current.Cache[culturename];
        }

        object IResourceProvider.GetObject
            (string resourceKey, CultureInfo culture)
        {
            object value;

            string cultureName = null;
            if (culture != null)
            {
                cultureName = culture.Name;
            }
            else
            {
                cultureName = CultureInfo.CurrentUICulture.Name;
            }

            value = GetResourceCache(cultureName)[resourceKey];
            value ??= GetResourceCache(null)[resourceKey];
            return value;
        }

        IResourceReader IResourceProvider.ResourceReader
        {
            get
            {
                string cultureName = null;
                CultureInfo currentUICulture = CultureInfo.CurrentUICulture;
                if (!String.Equals(currentUICulture.Name,
                    CultureInfo.InstalledUICulture.Name))
                {
                    cultureName = currentUICulture.Name;
                }

                return new CustomResourceReader
                    (GetResourceCache(cultureName));
            }
        }
    }

    internal sealed class CustomResourceReader : IResourceReader
    {
        private IDictionary _resources;

        public CustomResourceReader(IDictionary resources)
        {
            _resources = resources;
        }

        IDictionaryEnumerator IResourceReader.GetEnumerator()
        {
            return _resources.GetEnumerator();
        }

        void IResourceReader.Close() { }

        IEnumerator IEnumerable.GetEnumerator()
        {
            return _resources.GetEnumerator();
        }

        void IDisposable.Dispose() { return; }
    }

    public class CustomDesignTimeResourceProviderFactory :
        DesignTimeResourceProviderFactory
    {
        private CustomDesignTimeLocalResourceProvider _localResourceProvider;
        private CustomDesignTimeLocalResourceWriter _localResourceWriter;
        private CustomDesignTimeGlobalResourceProvider _globalResourceProvider;

        public override IResourceProvider
            CreateDesignTimeLocalResourceProvider(IServiceProvider serviceProvider)
        {
            // Return an IResourceProvider.
            _localResourceProvider ??= new CustomDesignTimeLocalResourceProvider();
            return _localResourceProvider;
        }

        public override IDesignTimeResourceWriter
            CreateDesignTimeLocalResourceWriter(IServiceProvider serviceProvider)
        {
            // Return an IDesignTimeResourceWriter.
            _localResourceWriter ??= new CustomDesignTimeLocalResourceWriter();
            return _localResourceWriter;
        }

        public override IResourceProvider
            CreateDesignTimeGlobalResourceProvider(IServiceProvider serviceProvider,
                    string classKey)
        {
            // Return an IResourceProvider.
            _globalResourceProvider ??= new CustomDesignTimeGlobalResourceProvider();
            return _globalResourceProvider;
        }
    }

Imports System.Collections.Generic
Imports System.Text
Imports System.Web.Compilation
Imports System.Resources
Imports System.Globalization
Imports System.Collections
Imports System.Reflection
Imports System.Web.UI.Design
Namespace CustomResourceProviders
    <DesignTimeResourceProviderFactoryAttribute(GetType(CustomDesignTimeResourceProviderFactory))> _
    Public Class CustomResourceProviderFactory
        Inherits ResourceProviderFactory
        Public Overrides Function CreateGlobalResourceProvider(ByVal classname As String) As IResourceProvider
            Return New CustomResourceProvider(Nothing, classname)
        End Function
        Public Overrides Function CreateLocalResourceProvider(ByVal virtualPath As String) As IResourceProvider
            Return New CustomResourceProvider(virtualPath, Nothing)
        End Function
    End Class

    ' Define the resource provider for global and local resources.
    Friend Class CustomResourceProvider
        Implements IResourceProvider
        Dim _virtualPath As String
        Dim _className As String

        Public Sub New(ByVal virtualPath As String, ByVal classname As String)
            _virtualPath = virtualPath
            _className = classname
        End Sub

        Private Function GetResourceCache(ByVal culturename As String) As IDictionary
            Return System.Web.HttpContext.Current.Cache(culturename)
        End Function

        Function GetObject(ByVal resourceKey As String, ByVal culture As CultureInfo) As Object Implements IResourceProvider.GetObject
            Dim value As Object
            Dim cultureName As String
            cultureName = Nothing
            If (IsNothing(culture)) Then
                cultureName = CultureInfo.CurrentUICulture.Name
            Else
                cultureName = culture.Name
            End If

            value = GetResourceCache(cultureName)(resourceKey)
            If (value = Nothing) Then
                value = GetResourceCache(Nothing)(resourceKey)
            End If
            Return value
        End Function


        ReadOnly Property ResourceReader() As IResourceReader Implements IResourceProvider.ResourceReader
            Get
                Dim cultureName As String
                Dim currentUICulture As CultureInfo
                cultureName = Nothing
                currentUICulture = CultureInfo.CurrentUICulture
                If (Not (String.Equals(currentUICulture.Name, CultureInfo.InstalledUICulture.Name))) Then
                    cultureName = currentUICulture.Name
                End If

                Return New CustomResourceReader(GetResourceCache(cultureName))
            End Get
        End Property
    End Class

    Friend NotInheritable Class CustomResourceReader
        Implements IResourceReader
        Private _resources As IDictionary

        Public Sub New(ByVal resources As IDictionary)
            _resources = resources
        End Sub

        Function GetEnumerator1() As IDictionaryEnumerator Implements IResourceReader.GetEnumerator
            Return _resources.GetEnumerator()
        End Function

        Sub Close() Implements IResourceReader.Close

        End Sub

        Function GetEnumerator() As IEnumerator Implements IEnumerable.GetEnumerator
            Return _resources.GetEnumerator()
        End Function

        Sub Dispose() Implements IDisposable.Dispose

        End Sub
    End Class

    Public Class CustomDesignTimeResourceProviderFactory
        Inherits DesignTimeResourceProviderFactory

        Private _localResourceProvider As New CustomDesignTimeLocalResourceProvider
        Private _localResourceWriter As New CustomDesignTimeLocalResourceWriter
        Private _globalResourceProvider As New CustomDesignTimeGlobalResourceProvider

        Public Overrides Function CreateDesignTimeLocalResourceProvider(ByVal serviceProvider As IServiceProvider) As IResourceProvider
            ' Return an IResourceProvider.
            If (_localResourceProvider Is Nothing) Then
                _localResourceProvider = New CustomDesignTimeLocalResourceProvider
            End If
            Return _localResourceProvider
        End Function
        Public Overrides Function CreateDesignTimeLocalResourceWriter(ByVal serviceProvider As IServiceProvider) As IDesignTimeResourceWriter
            ' Return an IDesignTimeResourceWriter.
            If (_localResourceWriter Is Nothing) Then
                _localResourceWriter = New CustomDesignTimeLocalResourceWriter
            End If
            Return _localResourceWriter
        End Function
        Public Overrides Function CreateDesignTimeGlobalResourceProvider(ByVal serviceProvider As IServiceProvider, ByVal classKey As String) As IResourceProvider
            ' Return an IResourceProvider.
            If (_globalResourceProvider Is Nothing) Then
                _globalResourceProvider = New CustomDesignTimeGlobalResourceProvider
            End If
            Return _globalResourceProvider
        End Function
    End Class

注解

类 DesignTimeResourceProviderFactoryAttribute 允许对象 ResourceProviderFactory 指定关联 DesignTimeResourceProviderFactory 对象的类型。该 DesignTimeResourceProviderFactory 类用于创建用于读取和写入资源的设计时提供程序。在 2005 Microsoft Visual Studio中，开发人员可以使用 “工具” 菜单上的 “生成本地资源”命令在设计时创建资源。

构造函数

DesignTimeResourceProviderFactoryAttribute(String)	初始化 DesignTimeResourceProviderFactoryAttribute 类的新实例，并将特性设置为指定的工厂类型名称。
DesignTimeResourceProviderFactoryAttribute(Type)	初始化 DesignTimeResourceProviderFactoryAttribute 类的新实例，并将特性设置为指定工厂类型的限定名称。

属性

FactoryTypeName	获取工厂类型名称的值。
TypeId	在派生类中实现时，获取此 Attribute 的唯一标识符。 (继承自 Attribute)

方法

Equals(Object)	返回一个值，该值指示此实例是否与指定的对象相等。 (继承自 Attribute)
GetHashCode()	返回此实例的哈希代码。 (继承自 Attribute)
GetType()	获取当前实例的 Type。 (继承自 Object)
IsDefaultAttribute()	确定是否使用了默认提供程序。
Match(Object)	当在派生类中重写时，返回一个指示此实例是否等于指定对象的值。 (继承自 Attribute)
MemberwiseClone()	创建当前 Object 的浅表副本。 (继承自 Object)
ToString()	返回表示当前对象的字符串。 (继承自 Object)

显式接口实现

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)	将一组名称映射为对应的一组调度标识符。 (继承自 Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)	检索对象的类型信息，然后可以使用该信息获取接口的类型信息。 (继承自 Attribute)
_Attribute.GetTypeInfoCount(UInt32)	检索对象提供的类型信息接口的数量（0 或 1）。 (继承自 Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)	提供对某一对象公开的属性和方法的访问。 (继承自 Attribute)

适用于

DesignTimeResourceProviderFactoryAttribute 类

定义

示例

注解

构造函数

属性

方法

显式接口实现

适用于

另请参阅

其他资源