Read multilined textBox line by line

Hello,

I wonder how it is possible to read a multilined textBox line by line into a List.

I dont get the below code to compile so I might be missing something here ?

string[] mylines = TextBox1->Text->Split(Environment::Newline);

List^ getLines = gcnew List();
String^ getLine = "";
for (int i = 0; i < mylines->Length; i++)
{
getLine = mylines->ToString();
getLines->Add(getLine);
}