ResourceProviderFactory.CreateLocalResourceProvider メソッドとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

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ResourceProviderFactory.CreateLocalResourceProvider メソッド

メモ : このメソッドは、.NET Framework version 2.0 で新しく追加されたものです。

派生クラスでオーバーライドされると、ローカルリソースプロバイダを作成します。

名前空間: System.Web.Compilation
アセンブリ: System.Web (system.web.dll 内)
構文

Visual Basic (宣言)

Public MustOverride Function
 CreateLocalResourceProvider ( _
    virtualPath As String _
) As IResourceProvider

Visual Basic (使用法)

Dim instance As ResourceProviderFactory
Dim virtualPath As String
Dim returnValue As IResourceProvider

returnValue = instance.CreateLocalResourceProvider(virtualPath)

public abstract IResourceProvider CreateLocalResourceProvider
 (
    string virtualPath
)

C++

public:
virtual IResourceProvider^ CreateLocalResourceProvider (
    String^ virtualPath
) abstract

public abstract IResourceProvider CreateLocalResourceProvider
 (
    String virtualPath
)

JScript

public abstract function CreateLocalResourceProvider
 (
    virtualPath : String
) : IResourceProvider

パラメータ

virtualPath: リソースファイルへのパス。

戻り値
IResourceProvider。

解説

派生クラスでオーバーライドされると、このメソッドは指定された virtualPath パラメータに対応する IResourceProvider オブジェクトを返します。このメソッドは、virtualPath がリソースファイルにマップされるように実装できます。

使用例

カスタマイズされたリソースプロバイダファクトリが CreateLocalResourceProvider メソッドを実装してキャッシュされた値を取得するコード例を次に示します。

Visual Basic

<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

[
    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];
        if (value == null)
        {
            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; }
}

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0

参照

関連項目
ResourceProviderFactory クラス
ResourceProviderFactory メンバ
System.Web.Compilation 名前空間
IResourceProvider インターフェイス

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ResourceProviderFactory.CreateLocalResourceProvider メソッドとは？ わかりやすく解説

ResourceProviderFactory.CreateLocalResourceProvider メソッド

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ResourceProviderFactory.CreateLocalResourceProvider メソッドとは？わかりやすく解説