CODEWITHSUNDEEP
c#asp.netc#-4.0c#-3.0
Jared
Jared

Reputation: 2483

String Manipulation - Get the last 'x' amount of chars

I am building a windows explorer app for the web using ASP.NET/C# 3.5. I have a dynamic string that holds my path information. This string changes as you navigate the application. What I am trying to do is get the last “directory name” in my string so for example:

C:\Code\AppSettings

I would need to return AppSettings

If the string was:

C:\Code\AppSettings\Backup

Then I would need to return Backup

I am not savvy enough with string manipulation to get this correctly from a dynamic string. Any help or examples would be great.

Thanks!

Upvotes: 0

Views: 321

Answers (5)

litterbugkid
litterbugkid

Reputation: 3666

I think this should do it:

exampleString = "C:\Code\AppSettings\Backup"  
string[] words = exampleString.Split('\\');

Tokenises the string according to '\\' i.e. will split the string at the '\' symbol, into an array containing C: Code AppSettings Backup

Then all you would need to do is use the last element in the words list however you like.

I've never used Path before, but i'm wondering whether it would get what you want, as the last part of the string may be a directory.

Upvotes: 0

Yahia
Yahia

Reputation: 70379

It is better to use Path class for handling this kind of stuff...

But if you want to it via string handling try 

string myResult = myString.SubString (myString.LastIndexOf ( "\\") + 1 );

Upvotes: 0

marapet
marapet

Reputation: 56516

Path.GetFileName(@"C:\Code\AppSettings\Backup")

results in Backup

The System.IO.Path should be used for file or directory path manipulations - it offers plenty of other useful methods.

Upvotes: 1

Jim Mischel
Jim Mischel

Reputation: 134045

Take a look at the Path class. In your case, Path.GetFileName would work. Unless there's a trailing backslash. Then you'll need to strip that trailing backslash first.

Or, you can use Substring or String.Split as others have suggested. However, note that you have to take into account the possibility of that trailing backslash, which can cause trouble with any of the alternatives.

By trailing backslash, I mean a string like C:\Code\AppSettings\.

Upvotes: 1

dtb
dtb

Reputation: 217351

Since you're dealing with file/directory paths, it's best to use the helper methods of the Path Class instead of string manipulation.

You can use the Path.GetFileName Method:

var result = Path.GetFileName(@"C:\Code\AppSettings");
// result == "AppSettings"

Upvotes: 5

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