How to extract int/double from a string?

double d;
string s;

d = double.parse(s)
//d now contains the numeric value of s

sorry, I need to parse a string containing more than one value.

well, I guess I can do sourcestring.split(some_delimiter) to get the string[], then check the string array content one by one. I was hoping that there is a faster and easier way to do this.


thx anyway.

koo9

regular expression seems might take soemtimes to learn and I think it's for this kind of operation. but haven't look deep into it.

koo9

Please explain what you are trying to extract from the text file -> the format of the this text file and we could give you a RegEx to extract the information...

and obviously don't forget to close sr:

so at the end:
sr.Close();

Oh, and 4 the record RegEx is not easy to use... DEFFINITELY NOT!
Allthough I am quite familiar with the syntax, for complex string manipulation it still gets hectic to write and/or debug...

If you insist on a RegEx, yes, please provide the format, if it's simple enough then it should be easy enough...

here's the regular expression. really easy. just \d+

using System.Text.RegularExpressions;

Regex regex = new Regex(
    @"\d+",
    RegexOptions.IgnoreCase
    | RegexOptions.Multiline
    | RegexOptions.Compiled
    );

// this will give you the collection of matches
//regex.Matches(inputString);

iterate through it like this:

         foreach (Match match in regex.Matches(inputString))
         {
            // here's the number
            //match.Value
         }

weareu

thanks for the responses. I think i will go without the regex, it seems to be a pain to use. plus it need times to learn, it's not a bad thing to learn in the future i think but not for now.

koo9

i will give you the credit anyway.

i disagree about regular expressions being horribly difficult. once you get the hang of it, it's pretty easy to look at it bit by bit. here's a good app i use all the time:
http://www.codeproject.com/dotnet/expresso.asp

thx, i will look into it.