Rename files in a folder, then copy each file to its own folder

[qman]

C# newbie here...

For simplicity, lets say I have a folder called TEST, which contains 3 files. Each file is named with the following naming convention: INVOICE_ABC_123.pdf, INVOICE_DEF_123.pdf, INVOICE_GHI_123.pdf.

I would like to rename each file, stripping out INVOICE_, and replacing the trailing numeric values with todays date, resulting in files named like: ABC_6_11_14.pdf, DEF_6_11_14.pdf, GHI_6_11_14.pdf.

I then want to loop through the files, creating a TEST2 folder which will contain a folder for each file, like: TEST2\ABC\xxx.pdf, TEST2\DEF\xxx.pdf, TEST2\GHI\xxx.pdf.


Any help would be much appreciated.

[dglienna]

If you don't need the original folder, just copy/rename one file at a time, and place in new folder. Then delete all of the original files. The names can stay the same on those...

[Arjay]

Check out the system.IO namespace in msdn. For file/directory operations, check out http://msdn.microsoft.com/en-us/libr...v=vs.110).aspx

[Arjay]

If you don't need to retain the renamed files in the original folder, you can use File.Move to rename them and move them all in one method call.

[willmotil]

additionally if you have to do work on those names algorithmic-ly
you can use the method (also shown in his link above) Path.GetFileName

string stringtoworkon = Path.GetFileName( somefilepath)

then simply use
string[] filenamepieces = String.Split(stringtoworkon, splitchars)

you can pass string.Split(..,...) a character Array to break up your string
using with whatever characters you wish to break it apart with

char[] splitchars = new char[]{ '_','-'}; // chars are entered with ' not " quotes

then you have each of those little parts you can process and check or change if required
do a foreach loop on them if you like to build them all back up into a single string ect...
that way working on a file name is equivalent to simply working on a string