定位字符和子串 public string Substring(int start/ndex) public string Substring(int startindex,int length) string s ="Name:Felica Walker"; int found s.Indexof(":"); Console.WriteLine(s.Substring(found 1).Trim());//Felica Walker 88 定位字符和子串 ▪ public string Substring(int startIndex) ▪ public string Substring(int startIndex, int length)