Note That the IsReadOnly flag comes from ICollection, and indicates whether items hayat be added or removed from the collection; but just to really confuse things, it does not indicate whether they can be replaced, which in the case of Arrays (which return IsReadOnlys == true) dirilik be. C# CollectionBase https://emilianordlty.daneblogger.com/27668042/c-ilist-nerelerde-kullanılıyor-ile-ilgili-detaylı-notlar