public object GetSerializer(Type componentType, Type serializerType)
{
VerifyInSession();
if (serializerType == null)
{
throw new ArgumentNullException("serializerType");
}
object serializer = null;
if (componentType != null)
{
// try 1: from cache
//
_serializersCache.TryGetValue(componentType, out serializer);
// check for provider attribute and add it to the list of providers
//
if (serializer != null && !serializerType.IsAssignableFrom(serializer.GetType()))
{
serializer = null;
}
AttributeCollection attributes = TypeDescriptor.GetAttributes(componentType);
DefaultSerializationProviderAttribute providerAttribute = attributes[typeof(DefaultSerializationProviderAttribute)]
as DefaultSerializationProviderAttribute;
if (providerAttribute != null && this.GetType(providerAttribute.ProviderTypeName) == serializerType)
{
object provider = Activator.CreateInstance(this.GetType(providerAttribute.ProviderTypeName),
BindingFlags.CreateInstance | BindingFlags.Public | BindingFlags.NonPublic,
null, null, null);
((IDesignerSerializationManager)this).AddSerializationProvider((IDesignerSerializationProvider)provider);
}
}
// try 2: DesignerSerializerAttribute
//
if (serializer == null && componentType != null)
{
AttributeCollection attributes = TypeDescriptor.GetAttributes(componentType);
DesignerSerializerAttribute serializerAttribute = attributes[typeof(DesignerSerializerAttribute)] as DesignerSerializerAttribute;
if (serializerAttribute != null &&
this.GetSerializerType(serializerAttribute.SerializerBaseTypeName) == serializerType)
{
try {
serializer = Activator.CreateInstance(this.GetSerializerType(serializerAttribute.SerializerTypeName),
BindingFlags.CreateInstance | BindingFlags.Instance |
BindingFlags.Public | BindingFlags.NonPublic,
null, null, null);
} catch {}
}
if (serializer != null)
{
_serializersCache[componentType] = serializer;
}
}
// try 3: from provider
//
if (serializer == null && _serializationProviders != null)
{
foreach (IDesignerSerializationProvider provider in _serializationProviders)
{
serializer = provider.GetSerializer(this, null, componentType, serializerType);
if (serializer != null)
{
break;
}
}
}
return(serializer);
}
public object GetSerializer(Type componentType, Type serializerType)
{
VerifyInSession();
if (componentType == null)
{
throw new ArgumentNullException("componentType");
}
if (serializerType == null)
{
throw new ArgumentNullException("serializerType");
}
// try 1: from cache
//
object serializer = _serializersCache[componentType];
if (!serializerType.IsAssignableFrom(serializer.GetType()))
{
serializer = null;
}
AttributeCollection attributes = TypeDescriptor.GetAttributes(componentType);
DefaultSerializationProviderAttribute providerAttribute = attributes[typeof(DefaultSerializationProviderAttribute)]
as DefaultSerializationProviderAttribute;
if (providerAttribute != null && this.GetType(providerAttribute.ProviderTypeName) == serializerType)
{
object provider = Activator.CreateInstance(this.GetType(providerAttribute.ProviderTypeName),
BindingFlags.CreateInstance | BindingFlags.Public | BindingFlags.NonPublic,
null, null, null);
((IDesignerSerializationManager)this).AddSerializationProvider((IDesignerSerializationProvider)provider);
}
// try 2: from provider
if (serializer == null)
{
foreach (IDesignerSerializationProvider provider in _serializationProviders)
{
serializer = provider.GetSerializer(this, _serializersCache[componentType], componentType, serializerType);
if (serializer != null)
{
break;
}
}
}
// try 3: Activator
if (serializer == null)
{
DesignerSerializerAttribute serializerAttribute = attributes[typeof(DesignerSerializerAttribute)] as DesignerSerializerAttribute;
if (serializerAttribute != null && this.GetType(serializerAttribute.SerializerTypeName) == serializerType)
{
serializer = Activator.CreateInstance(this.GetType(serializerAttribute.SerializerTypeName),
BindingFlags.CreateInstance | BindingFlags.Public | BindingFlags.NonPublic,
null, null, null);
}
}
if (serializer != null)
{
_serializersCache[componentType] = serializer;
}
return(serializer);
}