c# - How to add files into List based on filename

Question

I have files in a directory. I want to add each file to the list based on the filename in the loop. first need to sort based on code then value.

filename sample

   name|code|value|dept
   --------------------
   a_001_200_x.txt 
   ab_001_100_x.txt
   abc_003_100_x.txt
   abcd_002_100_x.txt

output should be

   a_001_100_x.txt
   ab_001_200_x.txt
   abc_002_100_x.txt
   abcd_003_100_x.txt

public void GetFiles()
{
     List<string> files =  Directory.GetFiles("C:/temp", "*.txt").ToList();
     foreach (var file in files)
    {
       Console.WriteLine(Path.GetFileName(file));
    }
}

Answer 1

Here is the sample code for you. Steps will be read filespaths then getonly filenames from filepaths. Then add them in the list. Orderby list by filename. Then read actual files with already order filepath. Hope this is clear. Let me know if you have any questions.

    //string[] filePaths = Directory.GetFiles("Directory Path");
    string[] filePaths = new string[] { "a_001_200_x.txt", "ab_001_100_x.txt" };
    List<FileInput> fileInput = new List<FileInput>();
    foreach (string path in filePaths)
    {
        fileInput.Add(new FileInput
        {
           //here you can do Path.GetFileName(path).Substring(path.Length - 13, 13)
            FileName = path.Substring(path.Length - 13, 13),
            FilePath = path,
        });
    }

    fileInput = fileInput.OrderBy(x => x.FileName).ToList();

    foreach(var f in fileInput){
         //Read your file here from the disk with sorted order.
    }



public class FileInput
{
    public string FileName { get; set; }
    public string FilePath { get; set; }
}