从字符串中获取数字

Question

I want to trim a string and get the number between special characters. For example there is a string BC/PO/88/2018 from it i want to get 88.

Answer 1

You could use Regular Expressions:

string strRegex = @"[A-Z]{2}/[A-Z]{2}/(?<MyNumber>[0-9]*)/[0-9]{4}";
Regex myRegex = new Regex(strRegex, RegexOptions.None);
string strTargetString = @"BC/PO/88/2018";

foreach (Match myMatch in myRegex.Matches(strTargetString))
{
  if (myMatch.Success)
  {
    // Add your code here
  }
}

Answer 2

you can make use of regular expression and extract number

Match match = Regex.Match("BC/PO/88/2018 f" , @"(\d+)");
if (match.Success) {
   return int.Parse(match.Groups[0].Value);
}

other way is you can do with the help of String.Split as suggested in comments if you are sure about string coming as input ie sure about format of string.