Compare and remove child directory before and after if parent directory exist

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Hi, need to have some idea or solution on below statement.

Let say I have put 3 path into a list.

Path 1-- D:\Images\HV9411FP87_Lot1\_Vision1\Fail\123.jpg

Path 2-- D:\Images\HV9411FP87_Lot1\_Vision1\Fail

Path 3-- D:\Images\HV9411FP87_Lot1\_Vision1\Fail\1234.jpg

Question 1: When I select Path 2 added into list, I need Path 1 to be remove from list.

Question 2: Since Path 2 will copy all .jpg files inside the path, lets assume path 1 has been removed (solve question 1), if I select Path 2, after that if want select Path 3, it will not allow me so select Path 3 due to all image files already copy from Path 2.

Currently I'm using C# WPF.

What I have tried:

Currently i have try to add the list from treeview. after done added, press a button to store all the path into a list.

Posted 27-May-20 23:25pm

Member 14844823

Updated 28-May-20 2:34am

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Maciej Los 28-May-20 5:34am

Do you want to get unique directories?

Member 14844823 28-May-20 5:50am

Yes. If i add path 2 into list, it will only have Path 2. This is because if i add-in Path 2, means it will copy all images in Fail folder.

If I didn't add Path 2 into list, i can simply add Path 1 and Path 3. this is because i will go each individual image (Path 1 and Path 3) and copy it out.

Maciej Los 28-May-20 6:06am

🤔

Richard MacCutchan 28-May-20 5:49am

Where is the code that is copying these files, and why does that affect the content of the existing paths?

Member 14844823 28-May-20 5:58am

Will develop the code for coping files after find out solution for Question 1 and Question 2, as i will copy the files from the list.

Because it might affect the time of copy. As i know, i can use overwrite = true when File.Copy.

Richard MacCutchan 28-May-20 6:14am

Well I am afraid that your question makes no sense. What are these three paths supposed to be for, and what do you mean by "it will not allow me so select Path 3 due to all image files already copy from Path 2"?

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phil.o · Answer 1 · 2020-05-28T02:35:00

Solution 1

You could use the Path.GetRelativePath(String, String) Method (System.IO) | Microsoft Docs[^] to test whether added path is relative to others:

C#

string pathToAdd = @"the\path\to\add";
if (!theList.Any(p => Path.GetRelativePath(p, pathToAdd) == p))
{
   // None of existing paths is relative to the new path, so add it
   theList.Add(pathToAdd);
}

Posted 28-May-20 2:35am

phil.o

Comments

Maciej Los 28-May-20 9:09am

Looks perfect to me ;)

phil.o 28-May-20 9:14am

Thanks :)