string parsing

Desi Gal

how do i extract integer values in an int array from this string
18401841

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Kirtan Patel16y ago
Accepted answer

using System.Text.RegularExpressions;

string Data = "18401841";


            //Get All Integer In Array
            Regex rex = new Regex("[0-9]+");

            int[] Array = new int[rex.Matches(Data).Count];

            int i=0;

            foreach (Match m in rex.Matches(Data))

            {

                Array[i++] = int.Parse(m.Value.ToString());

            }
Sam Hobbs16y ago
I won't post my actual opinion of using regular expressions to parse XML, but it is the type of thing that will likely increase in complexity much faster than tools designed for the purpose such as XmlSerializer.

I am not sure what happened to the attachment to my previous post, but I tried a few times to upload it again. I will try again to upload it.
Desi Gal16y ago
Thanks for all your answers Kirtan Patel's answer works like a charm.

@theLizard:your answer separates out individual digit in an array,thanks though.
@Sam:thanks ,I will try out ur solution

For more complex data, you will need something capable of more complexity. The attached sample shows use of XmlSerializer, which can be used for more complex data too. The following is most of the code; the only important part missing from below is the Provider and ProvidersList classes.

ProvidersList pl;

XmlSerializer Serializer;

Serializer = new XmlSerializer(typeof(ProvidersList));

FileInfo fi = new FileInfo(FileAt);

if (!fi.Exists)

{

	Console.WriteLine("File not found");

	return;

}

FileStream fs = new FileStream(FileAt, FileMode.Open);

try { pl = (ProvidersList)Serializer.Deserialize(fs); }

catch (Exception ex)

{

	Console.WriteLine("Deserialize exception: {0}\r\nInner exception: {1}",

		ex.Message, ex.InnerException.Message);

	return;

}

foreach (Provider p in pl)

	Console.WriteLine(p.ProviderId);

Note that XmlSerializer can read from a StringReader stream instead of a file stream if you need to read from memory instead of storage.

theLizard16y ago
string test = "18401841";

        private void doTest()
           {
           int[] iArr = new int[0];
           for(int i=0; i < test.Length; i++)
               {
               if( Char.IsDigit(test, i) )
                   {
                   Array.Resize(ref iArr, iArr.Length+1);
                   iArr[iArr.Length-1] = int.Parse(test[i].ToString());
                   }
               }

           }
string manipulation is a very important quality.