How do I delete a directory with read-only files in C#?

Simplest way of avoiding recursive calls is by utilising the AllDirectories option when getting FileSystemInfos, like so:

public static void ForceDeleteDirectory(string path) 
{
    var directory = new DirectoryInfo(path) { Attributes = FileAttributes.Normal };

    foreach (var info in directory.GetFileSystemInfos("*", SearchOption.AllDirectories))
    {
        info.Attributes = FileAttributes.Normal;
    }

    directory.Delete(true);
}