Start new line with spaces

Question

I'm stuck at this problem I would really appreciate if someone can help me solve this problem.

1. I want to add spaces for sub-folder like this format down below.(it must be done with recursion)

2. I want to add spaces for sub-folder like this format down below.(it must be done with recursion)

   using System;
   using System.Collections.Generic;
   using System.Linq;
   using System.Text;
   using System.Threading.Tasks;
   using System.IO;
   
   namespace G14_211115
   {
        class Program
        {
              static void Main(string[] args)
              {
                   string path = @"C:\Program Files\FinchVPN";
   
                   WriteDirectories(path);
                   Console.ReadKey();
              }
   
              /* Tasks.
              * 1. I want to add spaces for subfolder like this format down below. ( it must be done with recursion) 
              *    Like this
              *    --------------------------------------------------------------
              *    Folder 1
              *      Folder 1.1
              *      Folder 1.2
              *    Folder 2
              *      Folder 2.1
              *        Folder 2.1.1
              *      Folder 2.2
              *    Folder 3
              *    Folder 4
              *   
               * 2. Task 2 I want to retype this code without using recurrence and C# inbuilt functions.
              */
   
              static void WriteDirectories(string path)
              {
                   string[] dirs = Directory.GetDirectories(path);
   
                   for(int i = 0; i < dirs.Length; i++)
                   {
                        Console.WriteLine(dirs[i]); 
                        WriteDirectories(dirs[i]);
                   }
             }
        }
   }
   

Answer 1

As you are calling WriteDirectories recursivly, you can pass a variable to each call indicating the (recursion)level. Using this you can just put some spaces before the output.

Therefore you would need to modify your code like this:

static void WriteDirectories(string path, int level = 0)
{
    string[] dirs = Directory.GetDirectories(path);

    for (int i = 0; i < dirs.Length; i++)
    {
        for (int j = 0; j < level; j++)
        {
            Console.Write(" ");
        }

        Console.WriteLine(dirs[i]);
        WriteDirectories(dirs[i], (level + 1));
    }
}

If you want more than just one space per level you can simply modify the inner loop, j < 2 * level would give you 2 space characters per level, and so on.

Update (Thanks to David)

Instead of the inner loop you can use new string(' ', level) for creating a new string containing the specified character level-times.

So the inner for-loop would be replaced by Console.Write(new string(' ', level));.

Answer 2

just provide a depth-parameter to your recursive call and add spaces according to the depth.

       static void WriteDirectories(string path, int depth) {
            string[] dirs = Directory.GetDirectories(path);
            for(int i = 0; i < dirs.Length; i++) {
                 string preSpaces = new String(' ',depth);
                 Console.WriteLine(preSpaces + dirs[i]); 
                 WriteDirectories(dirs[i], depth+1);
            }
       }

Your first call should provide 0 or 1 as depth.