?
Solved

Retrieve a reference from a string

Posted on 2013-01-29
7
Medium Priority
?
195 Views
Last Modified: 2013-01-29
I have a string and I want to look for a reference in a specific format which could be anywhere in the string. This reference is random, but will always be in the same format.

The format looks like this. N######NN##          

The string would look like this.

Dim MyString as String = "this is my string Z123456TW00 and I need to obtain the reference"

My aim is to take this value and compare it to a reference in my database.

Any ideas how I can obtain anything in the format above regardless of the numbers or letters?
0
Comment
Question by:paulandyt
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
7 Comments
 
LVL 53

Expert Comment

by:Dhaest
ID: 38830323
If there is no logic in your strings to get the reference, like for example it always start with a "Z" and ends when a space (or end of the string) is found, then it will be impossible to do.

Perhaps you can perform it in the other direction.

Take the reference from your database and check if that is a part of your string.
0
 
LVL 16

Accepted Solution

by:
Easwaran Paramasivam earned 2000 total points
ID: 38830402
Hey you could use Regex to find out the pattern you want.


^\w\d{6}\w{2}\d{2}$  could be your pattern. Please do refer:

http://msdn.microsoft.com/en-us/library/hs600312.aspx
http://www.codeproject.com/Articles/9099/The-30-Minute-Regex-Tutorial
0
 
LVL 1

Expert Comment

by:DoutorApedeuta
ID: 38830419
An easy way, I think, will be to split the string by the whitespace character, and then with the resulting strings do:
1. compare each agains the database, or;
2. validate the format of each string, to search the one that corresponds to the reference, and then compare it to the database.
0
Free Backup Tool for VMware and Hyper-V

Restore full virtual machine or individual guest files from 19 common file systems directly from the backup file. Schedule VM backups with PowerShell scripts. Set desired time, lean back and let the script to notify you via email upon completion.  

 
LVL 35

Expert Comment

by:Robert Schutt
ID: 38830422
EaswaranP is close but I think you need this:
    Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
        Dim MyRef As String = GetRef("this is my string Z123456TW00 and I need to obtain the reference")
        MsgBox(MyRef)
    End Sub

    Private Function GetRef(ByVal MyString As String)
        Dim Matches = Regex.Matches(MyString, "\b\w\d{6}\w{2}\d{2}\b")
        Dim ret As String
        If Matches.Count > 0 Then
            ret = Matches(0).Value
        Else
            ret = "N/A"
        End If
        Return ret
    End Function

Open in new window

0
 

Author Closing Comment

by:paulandyt
ID: 38830424
Using expressions worked!

 Here is my code:

Imports System.Collections.Generic
Imports System.Globalization
Imports System.Text.RegularExpressions

Public Module Example

    Public Sub Main()
        Dim pattern As String = "\w{1}\d{6}\w{4}\b"
        Dim input As String = "this is my string Z123456TW00 and I need to obtain the reference"
        For Each match As Match In Regex.Matches(input, pattern, RegexOptions.IgnoreCase)
            Console.WriteLine("{0}", _
                              match.Value, match.Groups(1).Value, match.Index)
        Next
        Console.Read()
    End Sub

End Module
0
 

Author Comment

by:paulandyt
ID: 38830441
Apologies Robert, your suggestion also worked!
0
 
LVL 35

Expert Comment

by:Robert Schutt
ID: 38830448
No worries, you figured it out yourself quicker!
0

Featured Post

DFW AZURE MEETUP TONIGHT FRI 6PM

We will be discussing what Azure Stack is, how does it fit into the suit of offerings that Azure has currently, and where can it fit into your organizations technology stack. We will also be discussing limitations of the platform while covering various applicable scenarios.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …
In this video, Percona Solution Engineer Rick Golba discuss how (and why) you implement high availability in a database environment. To discuss how Percona Consulting can help with your design and architecture needs for your database and infrastr…
Suggested Courses

741 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question