// Private Methods (1)
private static R InvokeGetExportedValueMethod <R>(Expression <Func <CompositionContainer, R> > expr,
CompositionContainer container,
Type serviceType,
string key)
{
var method = (expr.Body as MethodCallExpression).Method;
var methodName = method.Name;
var getExportedValueMethods = container.GetType()
.GetMethods()
.Where(m => m.Name == methodName &&
m.GetGenericArguments().Length == 1);
object[] @params;
if (key != null)
{
// with key
@params = new object[] { key };
}
else
{
@params = new object[0];
}
return(GlobalConverter.Current
.ChangeType <R>(CollectionHelper.Single(getExportedValueMethods,
m => m.GetParameters().Length == @params.Length)
.MakeGenericMethod(serviceType)
.Invoke(container, @params)));
}
public static dynamic GetExportedType(this CompositionContainer container, Type type)
{
try
{
if (type.IsGenericType)
{
return
(container.GetType()
.GetMethod("GetExportedValueOrDefault", new Type[] {})
.MakeGenericMethod(type.GetGenericTypeDefinition()
.MakeGenericType(type.GenericTypeArguments))
.Invoke(container, new object[] {})?
.GetType());
}
return(container.GetType().GetMethod("GetExportedValueOrDefault", new Type[] { }).MakeGenericMethod(type).Invoke(container, new object[] { })?.GetType());
}
catch (Exception)
{
throw;
}
}