ResourceProviderFactory Class
Definition
Important
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Serves as the base class for classes that create resource providers.
public ref class ResourceProviderFactory abstract
public abstract class ResourceProviderFactory
type ResourceProviderFactory = class
Public MustInherit Class ResourceProviderFactory
- Inheritance
-
ResourceProviderFactory
Examples
The following code example shows a customized resource provider factory that retrieves cached values.
[
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
Remarks
ResourceProviderFactory is an abstract class that serves as the base class for objects that return global and local resource providers. Classes must derive from ResourceProviderFactory to implement its functionality.
Constructors
ResourceProviderFactory() |
When implemented in a derived class, initializes a new instance of the derived class. |
Methods
CreateGlobalResourceProvider(String) |
When overridden in a derived class, creates a global resource provider. |
CreateLocalResourceProvider(String) |
When overridden in a derived class, creates a local resource provider. |
Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
GetHashCode() |
Serves as the default hash function. (Inherited from Object) |
GetType() |
Gets the Type of the current instance. (Inherited from Object) |
MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
ToString() |
Returns a string that represents the current object. (Inherited from Object) |
Applies to
See also
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