将List（Of String）数组转换/创建为类或函数

I have this code that phases a text file, formats it, and then creates a List(Of String) for each new line. Now what I want to do is create a class out of that List(Of String) so it can be accessed from anywhere in the program , and be able to pass it an integer parameter and it should return the string value of the integer index of the List(Of Strings). I have this code that phases a text file, forma