How can I get a substring from a file path in C#?

Question

I have a string path = c:\inetpub\wwwrroot\images\pdf\admission.pdf

I am using this

path = path.LastIndexOf("\\").ToString();
path = path.Substring(path.LastIndexOf("/") + 1);

i want to get:

c:\inetpub\wwwrroot\images\pdf
c:\inetpub\wwwrroot\images\pdf\admission.pdf

now i want to get the admission.pdf from this string path how can i do it?

You should still use one of the IO.Path functions. Doing this manually with String.Substring is just asking for trouble. — Cody Gray
– Cody Gray ♦, Commented Feb 26, 2011 at 13:54

Bala R · Accepted Answer · 2011-02-26 13:47:55Z

12

string path = "c:\\inetpub\\wwwrroot\\images\\pdf\\admission.pdf";

string folder = path.Substring(0,path.LastIndexOf(("\\")));
                // this should be "c:\inetpub\wwwrroot\images\pdf"

var fileName = path.Substring(path.LastIndexOf(("\\"))+1);
                // this should be admin.pdf

answered Feb 26, 2011 at 13:47

Bala R

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3 Comments

Timwi Over a year ago

@safi: No, it didn’t. You should listen to the highest-voted answer.

Bala R Over a year ago

@Timwi the OP specifically asked for a solution using Substring in one of his comments and that's why I posted by answer with Substring. Maybe he's got a good reason for that. Thanks for the down-vote.

Timwi Over a year ago

Please stop assuming that everyone who comments negatively also downvoted you.

Sean Carpenter · Accepted Answer · 2011-02-26 13:26:24Z

7

There are a bunch of helper methods on the System.IO.Path class for extracting parts of paths/filenames from strings.

In this case, System.IO.Path.GetFileName will get you what you want.

answered Feb 26, 2011 at 13:26

Sean Carpenter

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4 Comments

safi Over a year ago

yes but i want to use substring method, not the file path object :)

Sean Carpenter Over a year ago

Why is that? This method gets you the filename without having to deal with substring and calculating string positions yourself.

safi Over a year ago

because i am further using this string to rename a file, so some time it might be a folder name as well.

Timwi Over a year ago

@safi: You should use Path.GetFileName regardless. It works with directory names too.

coldandtired · Accepted Answer · 2011-03-06 00:19:37Z

4

Why Substring?

Use

System.Io.Path.GetDirectoryName(full_filepath)

to get the folder name, and

System.Io.Path.GetFileName(full_filepath)

for just the file.

edited Mar 6, 2011 at 0:19

answered Feb 26, 2011 at 13:59

coldandtired

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Comments

Aliostad · Accepted Answer · 2011-02-26 13:26:31Z

2

System.Io.Path.GetFileName(path);

answered Feb 26, 2011 at 13:26

Aliostad

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