public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
if (value != null)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
XamlSchemaContext xamlSchemaContext =
RequireService <IXamlSchemaContextProvider>(context).SchemaContext;
Baml2006SchemaContext schemaContext = xamlSchemaContext as Baml2006SchemaContext;
if (schemaContext == null)
{
throw new InvalidOperationException(SR.Get(SRID.ExpectedBamlSchemaContext));
}
IXamlObjectWriterFactory objectWriterFactory =
RequireService <IXamlObjectWriterFactory>(context);
IProvideValueTarget ipvt =
RequireService <IProvideValueTarget>(context);
IRootObjectProvider rootObjectProvider =
RequireService <IRootObjectProvider>(context);
ResourceDictionary dictionary = ipvt.TargetObject as ResourceDictionary;
if (dictionary == null)
{
throw new InvalidOperationException(SR.Get(SRID.ExpectedResourceDictionaryTarget));
}
Stream stream = value as Stream;
if (stream == null)
{
byte[] bytes = value as byte[];
if (bytes != null)
{
stream = new MemoryStream(bytes);
}
}
if (stream == null)
{
throw new InvalidOperationException(SR.Get(SRID.ExpectedBinaryContent));
}
//
DeferrableContent deferrableContext = new DeferrableContent(stream, schemaContext,
objectWriterFactory, context, rootObjectProvider.RootObject);
return(deferrableContext);
}
return(base.ConvertFrom(context, culture, value));
}
private void SetDeferrableContent(DeferrableContent deferrableContent)
{
Debug.Assert(deferrableContent.Stream != null);
Debug.Assert(deferrableContent.SchemaContext != null);
Debug.Assert(deferrableContent.ObjectWriterFactory != null);
Debug.Assert(deferrableContent.ServiceProvider != null);
Debug.Assert(deferrableContent.RootObject != null);
Baml2006ReaderSettings settings = new Baml2006ReaderSettings(deferrableContent.SchemaContext.Settings);
settings.IsBamlFragment = true;
settings.OwnsStream = true;
settings.BaseUri = null; // Base URI can only be set on the root object, not on deferred content.
Baml2006Reader reader = new Baml2006Reader(deferrableContent.Stream,
deferrableContent.SchemaContext, settings);
_objectWriterFactory = deferrableContent.ObjectWriterFactory;
_objectWriterSettings = deferrableContent.ObjectWriterParentSettings;
_deferredLocationList = new List<KeyRecord>();
_rootElement = deferrableContent.RootObject;
IList<KeyRecord> keys = reader.ReadKeys();
// If we already have the Source set then we can ignore
// this deferable content section
if (_source == null)
{
if (_reader == null)
{
_reader = reader;
_xamlLoadPermission = deferrableContent.LoadPermission;
SetKeys(keys, deferrableContent.ServiceProvider);
}
else
{
throw new InvalidOperationException(SR.Get(SRID.ResourceDictionaryDuplicateDeferredContent));
}
}
else if (keys.Count > 0)
{
throw new InvalidOperationException(SR.Get(SRID.ResourceDictionaryDeferredContentFailure));
}
}