Microsoft HowTo QuickStarts Tutorial

How Do I...Make a ResourceReader?

There are two steps to creating a custom resource reader. The first step is to create a class that implements IResourceReader, which requires a Close method and an implementation for GetEnumerator. The following code example demonstrates creating a basic class that implements IResourceReader.


Class CustomReader : Implements IResourceReader

    Public Sub Close()
        // Close any items allocated for the resources
    End Sub

    Public Function IEnumerable_GetEnumerator() As IEnumerator Implements IEnumerable.GetEnumerator
        return GetEnumerator();
    End Function

    Public Function GetEnumerator() As IDictionaryEnumerator Implements IResourceReader.GetEnumerator
        // Return an enumerator for the resource collection
    End Function

End Class

The next step is to generate a custom resource manager that uses the custom reader. To do this, create a derived class of ResourceManager, and override InternalGetResourceSet to allow for the creation of the resource reader defined earlier. The following code example demonstrates a simple ResourceManager.


Public Class CustomManager : Inherits ResourceManager
    Protected Overrides Function InternalGetResourceSet( culture As CultureInfo, _
                                                         createIfNotExists As Boolean, _
                                                         tryParents As Boolean ) As ResourceSet
        Return new ResourceSet( new CustomReader() )
    End Function
End Class

Example

VB List.exe

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