public static bool IsICollectionType(Type collectionType)
{
var genericEnumerableType = typeof(ICollection <>);
if (collectionType.GenericTypeArguments.Count() != 1)
{
return(false);
}
var elementType = collectionType.GenericTypeArguments.Single();
var expectedType = genericEnumerableType.MakeGenericType(new [] { elementType });
if (!expectedType.IsAssignableFrom(collectionType))
{
return(false);
}
var constructor = collectionType.GetConstructor(new Type[0]);
if (constructor == null)
{
return(false);
}
_collectionsInfos[collectionType] = new GenericCollectionInfo(collectionType, elementType, constructor);
return(true);
}
public static GenericCollectionInfo GetCollectionInfo(Type collectionType)
{
if (!_collectionsInfos.ContainsKey(collectionType))
{
var elementType = collectionType.GenericTypeArguments.Single();
var constructor = collectionType.GetConstructor(new Type[0]);
_collectionsInfos[collectionType] = new GenericCollectionInfo(collectionType, elementType, constructor);
}
return(_collectionsInfos[collectionType]);
}