Delete all in folder except the filename in list

Question

I have a folder, and a list (which contain file names). I want the program delete files except the file which are listed. C#

I hope it is possible.

Now used code:

It delete only ONE file.

        string folder = Directory.GetCurrentDirectory();
        string thisNOdelete = "example.exe";
        string[] list = Directory.GetFiles(@folder);//
        foreach (string file in list)
        {

            if (file.ToUpper().Contains(thisNOdelete.ToUpper()))
            {
                    //if found this do nothing

            }
            else
            {

               File.Delete(file);
            }
        }

Can you show us your code so far? – Baldrick Mar 20 '14 at 07:00 — Baldrick, Mar 20 '14 at 07:00

score 6 · Accepted Answer · answered Mar 20 '14 at 07:30

6

You could try,

    public void DeleteFilesExcept(string directory,List<string> excludes)
    {
        var files = System.IO.Directory.GetFiles(directory).Where(x=>!excludes.Contains(System.IO.Path.GetFileName(x)));
        foreach (var file in files)
        {
            System.IO.File.Delete(file);
        }
    }

answered Mar 20 '14 at 07:30

Mat J

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Try and operates :) Thanks. – GaboO Mar 20 '14 at 07:39

Sajeetharan · Answer 2 · 2014-03-20T07:18:45.447

0

I assume you are having files not to be deleted as a List of String,

 string[] filePaths = Directory.GetFiles(strDirLocalt);
    foreach (string filePath in filePaths)
    {
        var name = new FileInfo(filePath).Name;
        name = name.ToLower();
        foreach (var file in YourFileslist)
        {
            if (name != file)
            {
                File.Delete(filePath);
            }
        }
    }

edited Mar 20 '14 at 07:18

answered Mar 20 '14 at 07:00

Sajeetharan

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Thanks , but it is delete only one file, so can't do it with a list. Or yet? – GaboO Mar 20 '14 at 07:11
I have modified the answer! You need to run a Foreach ! – Sajeetharan Mar 20 '14 at 07:18
It is not the right answer, the second foreach loop does something different than you are expecting it to do. – Peter Mar 20 '14 at 10:10

Delete all in folder except the filename in list

2 Answers2