Question

This question had asked for PowerShell before. I want to do this in C#.
I have a directory on my desktop. The directories name is “rename”.

C:\Users\dell\Desktop\rename

And “rename” folder contains “a_b”, “b_c”, “c_d”, “d_e” folders.
I want to replace “_” with “-” characters.
In other words, folders’ new names will be “a-b”, “b-c”, “c-d”, “d-e”

Thank you for your help!

Answer 1

Create a DirectoryInfo object representing the rename folder, iterate through its subfolders, and use String.Replace to replace _ with -:

var parent = new DirectoryInfo(@"C:\Users\dell\Desktop\rename");

foreach (var child in parent.GetDirectories()) {
    var newName = child.FullPath.Replace('_', '-');

    if (newName != child.FullPath) {
        child.MoveTo(newName);
    }
}