Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Need Regx for file path validation

Posted on 2013-06-12
8
Medium Priority
?
278 Views
Last Modified: 2013-10-29
Hi,
I need the regx pattern to validate the following file format

\\test\test$\TEST.xls
\\server\share\folder\myfile.txt
\\server\share\myfile.txt
\\123.123.123.123\share\folder\myfile.txt
c:\folder\myfile.txt
c:\folder\myfileWithoutExtension
C:\folder\myfile.file\
C:\folder\file1.File\
0
Comment
Question by:sam_net
[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
8 Comments
 
LVL 15

Accepted Solution

by:
angus_young_acdc earned 1500 total points
ID: 39240876
Validate for what?  That the folders / paths exist?

If so why not just check if the file / folder exist with existing functions?  Path would be each line of the file you're reading for the paths

if (Directory.Exists(path))
{

}

Open in new window


if (File.Exists(path))
{
   return true;
}

Open in new window

0
 

Author Comment

by:sam_net
ID: 39240883
I am getting file path as input.

i.e. from Textbox

need to validate the give input as valid for or not... and need to match following format
\\test\test$\TEST.xls
\\server\share\folder\myfile.txt
\\server\share\myfile.txt
\\123.123.123.123\share\folder\myfile.txt
c:\folder\myfile.txt
c:\folder\myfileWithoutExtension
C:\folder\myfile.file\
C:\folder\file1.File\
0
 
LVL 10

Expert Comment

by:Monica P
ID: 39241333
Article Give u the concept in detail : http://www.codeproject.com/Tips/216238/Regular-Expression-to-Validate-File-Path-and-Exten

^(?:[\w]\:|\\)(\\[a-z_\-\s0-9\.]+)+\.(txt|gif|pdf|doc|docx|xls|xlsx)$

Open in new window



^(?:[\w]\:|\\) -- Begin with x:\ or \\

[a-z_\-\s0-9\.] -- valid characters are a-z| 0-9|-|.|_ (you can add more)

(txt|gif|pdf|doc|docx|xls|xlsx) -- Valid extension (you can add more)

Matches:
\\192.168.0.1\folder\file.pdf
\\192.168.0.1\my folder\folder.2\file.gif
c:\my folder\abc abc.docx
c:\my-folder\another_folder\abc.v2.docx

Non-Matches:
\\192.168.0.1\folder\fi<le.pdf
\\192.168.0.1\folder\\file.pdf
\\192.168.0.1\my folder\folder.2\.gif
c:\my folder\another_folder\.docx
c:\my folder\\another_folder\abc.docx
c:\my folder\another_folder\ab*c.v2.docx
c:\my?folder\another_folder\abc.v2.docx
file.xls

Test it:
http://regexpal.com/
http://regexlib.com/



http://regexlib.com/Search.aspx?k=path&AspxAutoDetectCookieSupport=1
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 

Author Comment

by:sam_net
ID: 39241436
Thanks for your inputs.

Here the file type externsions were predefined.. But i need to allow all valid extension.

i.e C:\Test\sample.csv
i.e. C:\Test\sample.png

So i expecting Regx to support all the valida extension along with above format.
0
 
LVL 75

Expert Comment

by:käµfm³d 👽
ID: 39243090
Try the following:

^(?:[a-zA-Z]:|\\)(?:\\(?!\.)[a-zA-Z0-9^&'@{}\[\],$=!#()%.+~_ -]+(?:\\(?!\\))?)+$

Open in new window

0
 
LVL 15

Expert Comment

by:angus_young_acdc
ID: 39252694
Sam_net

If you are getting it from a textbox using Directory.Exists("") and File.Exists("") will still work.  If you have a file called Test.txt on your C:\ then File.Exists("C:\Test.txt") will return true, if it doesn't (because the path isn't valid or whatever) then it will return false.
0
 
LVL 15

Expert Comment

by:angus_young_acdc
ID: 39252695
Just seen your last post, also File.Exists(") will take any extension.  Just pass the path to the file and it will just check it is there, it doesn't care about the type.
0
 

Author Closing Comment

by:sam_net
ID: 39608503
Thanks
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

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

IntroductionWhile developing web applications, a single page might contain many regions and each region might contain many number of controls with the capability to perform  postback. Many times you might need to perform some action on an ASP.NET po…
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…
Have you created a query with information for a calendar? ... and then, abra-cadabra, the calendar is done?! I am going to show you how to make that happen. Visualize your data!  ... really see it To use the code to create a calendar from a q…
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 …

688 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