如何在c#中包含cut by

string str = "cut by";
string[] result = str.Split(new string[] { "cut by" }, StringSplitOptions.None);

using System.Text.RegularExpressions;

string str = "cut by";
string pattern = "cut by";
string[] result = Regex.Split(str, pattern);

string str = "cut by";
string delimiter = "cut by";
int index = str.IndexOf(delimiter);
string result = str.Substring(index + delimiter.Length);