Renaming folders in a folder

It will recursively rename all the folders, folders in folders in folders.

static int _index = 0;
        public void RenameFolder(string sourceFolder)
        {
            try
            {
                string[] folders = Directory.GetDirectories(sourceFolder);
                foreach (string folder in folders)
                {
                    string name = Path.GetFileName(folder);
                    RenameFolder(folder);

                    if (name.ToLower().Contains("maced"))
                    {    
                        string path = Path.GetDirectoryName(folder);
                        Directory.Move(folder, path + @"\"+ name.Substring(0,5)+ _index.ToString());
                        _index++;
                    }
                }
            }
            catch (Exception p1)
            {
                MessageBox.Show("Directory is invalid!! " + p1.Message);
            }
        }

Please vote and Accept Answer if it Helped.

To rename a file you actually use the File.Move method of System.IO
to find the files named Maced****** you'l need to loop through your files/directories and check if the name == the name you wanna find.
for example,

Using System.IO;

  System.IO.File.Move(oldFileName, newFileName); //Renames Files
  
  //Putting All files into an array using the directory's path.

  string[] array1 = Directory.GetFiles(@"C:\Maced_Jul_2010");
   For(int i = 0; i < array1.length; i++)
   {
   if(array1[i].contains("Maced") {
      System.IO.File.Move(array1[i], indexof(0, 5)); //Renames Files
   }
}

Note:
i just noticed that this will not work - you're going to have the same file name for every file in there - and that will end up falling over.. i think you meant to have the word 'MACED' removed from the filename? in which case, same code except inside the if statement -

System.IO.File.Move(array1[i], indexof(5, array1[i].length - 5));