IResourceProvider.ResourceReader 属性
定义
获取一个对象,以便从资源文件中读取资源值。Gets an object to read resource values from a source.
public:
property System::Resources::IResourceReader ^ ResourceReader { System::Resources::IResourceReader ^ get(); };
public System.Resources.IResourceReader ResourceReader { get; }
member this.ResourceReader : System.Resources.IResourceReader
Public ReadOnly Property ResourceReader As IResourceReader
属性值
与当前资源提供程序关联的 IResourceReader。The IResourceReader associated with the current resource provider.
示例
下面的代码示例演示了检索缓存值的自定义资源提供程序工厂。The following code example shows a customized resource provider factory that retrieves cached values. 资源提供程序工厂创建实现的自定义资源提供程序的实例 IResourceProvider 。The resource provider factory creates an instance of a customized resource provider that implements IResourceProvider. 资源提供程序包含自定义 ResourceReader 属性。The resource provider includes a customized ResourceReader property.
[
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; }
}
<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
注解
IResourceReader对象从源中读取顺序名称/值对。An IResourceReader object reads sequential name/value pairs from a source. ResourceReader和 ResXResourceReader 类提供默认 IResourceReader 接口实现以便分别从 .resources 和 .resx 文件读取。The ResourceReader and ResXResourceReader classes provide default IResourceReader interface implementation for reading from .resources and .resx files, respectively. 接口的其他实现 IResourceProvider 可以从包含资源值的任何源中进行读取。Other implementations of the IResourceProvider interface could read from any source containing resource values.