c# sorting list by substring

Question

i have a list of strings:

\\\\Tecan1\\tecan #1 output\\15939-E.ESY\r\n
\\\\Tecan1\\tecan #1 output\\15942-E.ESY\r\n
\\\\Tecan1\\tecan #1 output\\15945-E.ESY\r\n
\\\\Tecan1\\tecan #1 output\\15948-E.ESY\r\n
\\\\Tecan1\\tecan #1 output\\15951-E.ESY\r\n
\\\\Tecan1\\tecan #1 output\\15954-E.ESY\r\n
\\\\Tecan1\\tecan #1 output\\15957-E.ESY\r\n
\\\\Tecan1\\tecan #1 output\\15960-E.ESY\r\n
\\\\Tecan1\\tecan #1 output\\15963-E.ESY\r\n
\\\\Tecan_2\\output on tecan 2\\15940-E.ESY\r\n
\\\\Tecan_2\\output on tecan 2\\15943-E.ESY\r\n
\\\\Tecan_2\\output on tecan 2\\15946-E.ESY\r\n
\\\\Tecan_2\\output on tecan 2\\15949-E.ESY\r\n
\\\\Tecan_2\\output on tecan 2\\15952-E.ESY\r\n
\\\\Tecan_2\\output on tecan 2\\15955-E.ESY\r\n
\\\\Tecan_2\\output on tecan 2\\15958-E.ESY\r\n
\\\\Tecan_2\\output on tecan 2\\15961-E.ESY\r\n
\\\\Tecan-5\\Output\\15941-E.ESY\r\n
\\\\Tecan-5\\Output\\15944-E.ESY\r\n
\\\\Tecan-5\\Output\\15947-E.ESY\r\n
\\\\Tecan-5\\Output\\15950-E.ESY\r\n
\\\\Tecan-5\\Output\\15953-E.ESY\r\n
\\\\Tecan-5\\Output\\15956-E.ESY\r\n
\\\\Tecan-5\\Output\\15959-E.ESY\r\n
\\\\Tecan-5\\Output\\15962-E.ESY\r\n

each \r\n should be a new line. sorry for the bad formatting

i need to sort the list of by the file name 15939-E.ESY, etc... i need the entire list in alphanumerical order by the filename. how would i sort it this way?

Do you have any code? That might show what kind of list it is for instance? — dirbacke
– dirbacke, Commented Dec 20, 2010 at 20:47

juharr · Accepted Answer · 2010-12-20 20:57:19Z

6

I'd use Path.GetFileName like this

list = list.OrderBy(s=>Path.GetFileName(s)).ToList();

Where list is a collection of those lines.

edited Dec 20, 2010 at 20:57

answered Dec 20, 2010 at 20:51

juharr

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3 Comments

JOE SKEET Over a year ago

just tried this and did not do anything . should i be sitting list = list.orderby........?

juharr Over a year ago

@herrow yeah you have to capture the IEnumberable that is returned. If you want to set it to the list you'll need a ToList on the end. See my updated answer.

Dan J Over a year ago

@herrow Yes. The method returns an IOrderedEnumerable<T>, it does not sort the list in-place.

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