How to find number from string

Question

String str = "USD  SBFARE 4067.71 OVDPCT 8P SBMARKUP 0A  TPS 59486 CC 0P  OTH 0A"

I need "8" (OVDPCT 8P) from this string.

Number always follow OVDPCT and precede with a P.

This 8 may be 10,12 etc means any number.

How can i by using c#.?

Answer 1

How many different variants are we talking about?

If it's always OVDPCT *P then the pattern can be:

.*OVDPCT (\d+)P.*

You can use it like this:

Match match = Regex.Match(str,@".*OVDPCT (\d+)P.*");
int num = int.Parse(match.Groups[1].Value);

Note: I'm being very rough here, you'd probably want to check match.Success and also use int.TryParse .

Answer 2

So you can use a regular expression to do that

var match = System.Text.RegularExpressions.Regex.Match(str, "OVDPCT (?<Number>\\d+)P", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

if(match.Success)
{
    var number = match.Groups["Number"].Value;
}

But this line seems like an data base record isn't it?

Answer 3

然后应该可以工作：

.*?OVDPCT (\d+)P.*

Answer 4

\\d+ is the regex for an integer number. So

resultString = Regex.Match(subjectString, @"\d+").Value;

will give you that number as a string. Int32.Parse(resultString) will then give you the number.

Answer 5

Excuse the scrappy code but something like this:

var str = "USD  SBFARE 4067.71 OVDPCT 8P SBMARKUP 0A  TPS 59486 CC 0P  OTH 0A";

var strAsArray = str.Split(" ".ToArray(), StringSplitOptions.RemoveEmptyEntries);

var subject = strAsArray[4].Trim(); // assuming fifth element

var value = new Regex("^[0-9]+").Match(subject).Value;

Console.WriteLine("Found: ", value);