C# list strings contains

- C# list of strings contains ignore case
- C# list of strings contains substring
- C# list of strings contains string
- C# check if list of strings contains string ignore case
- C# list of strings contains case insensitive
- C# linq list of strings contains substring
- C# check if list of strings contains string
- C# check if list of strings contains duplicates
- C# check if list of strings contains value
- C# list contains multiple strings