split using string c#

string[] separatingStrings = { "<<", "..." };

string text = "one<<two......three<four";
System.Console.WriteLine($"Original text: '{text}'");

string[] words = text.Split(separatingStrings, System.StringSplitOptions.RemoveEmptyEntries);
System.Console.WriteLine($"{words.Length} substrings in text:");

foreach (var word in words)
{
    System.Console.WriteLine(word);
}
listStrLineElements = line.Split(',').ToList();//Split using a string delimiter instead of a char
data.Split(new string[] { "xx" }, StringSplitOptions.None);