Unfortunately we cannot refer to the validation issue.
However, the nature of an IEnumarable is about returning its elements and is the base ground for other more specialized datatypes. Those data types are designed to offer additional functionalities.
give a try at:
- reconstruncting the testList by filtering
- Assign Activity:
- Textlist = Testlist.Where(Function (x) Not x.Contains(“@”))
- Assign Activity:
feel free to materialize it into another Datatype e.g. list with appending toList()
Keep in mind: IEnumerable are deferred executed