How to add List<> to a List<> in asp.net [duplicate]
Use List.AddRange(collection As IEnumerable(Of T)) method.
It allows you to append at the end of your list another collection/list.
Example:
List<string> initialList = new List<string>();// Put whatever you want in the initial listList<string> listToAdd = new List<string>();// Put whatever you want in the second listinitialList.AddRange(listToAdd);