extracting a substring of definite length from a string

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Hi All,

Is there a way to extract a certain digit sub string from a string in vb.net or c#.net?

E.g- ABVDFGFHJXXXX is a substring that can appear anywhere in a string. There can be other substrings of same length but of different alphanumeric combination(say 97DBCHFJKXXXX) in the same string. Then how to extract those 13 digit long sub strings?

I want to get those 13 digit long substrings in some variable
like variable a=ABVDFGFHJXXXX and b=97DBCHFJKXXXX. Or may be I can use a loop.

In all I want to extract words of length 13 from a string, without knowing the string content.

Any help would be greatly appreciated!!

Posted 26-Aug-14 19:56pm

planetz

Updated 26-Aug-14 21:21pm

v4

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Bernhard Hiller 27-Aug-14 2:17am

"but of different combination" what does that mean? Can you provide some examples of valid data (and perhaps also of invalid data)?

3 solutions

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touchofevil · Answer 1 · 2014-08-26T21:59:00

From what I could understand of your question (Please correct if wrong).

Following should give out all the actual values based on a pattern from an input string.

C#

string input = "Your Input String ABVDFGFHJ1234.";
// Create Your Pattern ABVDFGFHJXXXX or similar
// I have assumed your pattern is 9 Alphabets followed by 4 digits
string pattern = @"([A-Z]{9}[0-9]{4})";

foreach (Match match in Regex.Matches(input, pattern))
{
    // say you wish to print those values
    Console.WriteLine(match.Value);
}

F. Xaver · Answer 2 · 2014-08-26T20:43:00

Solution 1

as Bernhard Hiller sayed, some more Info would be great!

but from that what i guessed, shouldn't a simple

VB

Dim myString As String = "ALSDJAHSLDJhp4uihapofjsfd"
myString = myString.Replace("ALSDJAHSLDJ", Nothing)

-> myString ->> hp4uihapofjsfd

just do your thing?

Posted 26-Aug-14 20:43pm

F. Xaver

lijupn · Answer 3 · 2014-08-26T20:45:00

Solution 2

You can use this code

string strItem="123ABVDFGFHJXXXX";

string strNewValue=strItem.Replace("ABVDFGFHJXXXX","").Trim();

Posted 26-Aug-14 20:45pm

lijupn