static void Main()
{
// importing class instance
var mcc = new MyClassConsumer();
// type to export
var typeToExport = typeof(MyClassA);
Console.WriteLine("Type to export: {0}", typeToExport);
var rb = new RegistrationBuilder();
rb.ForType(typeToExport)
.ExportInterfaces();
var catalog = new AssemblyCatalog(typeof(Program).Assembly, rb);
var container = new CompositionContainer(catalog);
container.ComposeParts(mcc); // bombs if MyClassA's MetadataAttribute is not commented out
Console.WriteLine("Imported property's type: {0}", mcc.MyClass.GetType());
Console.ReadLine();
}
static void Main()
{
var catalog = new AssemblyCatalog(typeof(Program).Assembly);
var filteredCatalog = catalog.Filter(p =>
{
var type = ReflectionModelServices.GetPartType(p).Value;
return(typeof(IClass).IsAssignableFrom(type) && // implements interface you're looking for
Attribute.IsDefined(type, typeof(ExportMetadataAttribute)) && // has ExportMetadata attribute
// check for Type == MyClassType.TypeA
type.GetCustomAttributes(typeof(ExportMetadataAttribute), true).Any(ca =>
{
var ema = (ExportMetadataAttribute)ca;
return ema.Name == "Type" && (MyClassType)ema.Value == MyClassType.TypeA;
}));
});
var container = new CompositionContainer(filteredCatalog);
MyClassConsumer mcc = new MyClassConsumer();
container.ComposeParts(mcc);
Console.WriteLine("Imported property's type: {0}", mcc.MyClass.GetType());
Console.ReadLine();
}
