Revised.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;

namespace download
{
    class Program
    {
        static void Main(string[] args)
        {
            int i = 0;
            for (int b = ; b <= ; b++) //make b equal the starting gallery and end with the last gallery.
            {
                string newPath = @"C:\Users\ \Pictures\unknown" + b + @"\"; //put in your profiles name
                System.IO.Directory.CreateDirectory(newPath);
                try
                {
                    for (i = 1; i <= 200; i++)
                    {
                        if (i < 10)
                        {
                            string localFilename = newPath + "Miki-B-9-00" + i + ".jpg";
                            using (WebClient client = new WebClient())
                            {
                                client.DownloadFile("http://cache.thumb.pinkvisual.com/320x480/" + b + "/0" + b + "/Miki-B-9-00" + i + ".jpg", localFilename);
                            }
                        }
                        else if (i < 100)
                        {
                            string localFilename = newPath + "Miki-B-9-0" + i + ".jpg";
                            using (WebClient client = new WebClient())
                            {
                                client.DownloadFile("http://cache.thumb.pinkvisual.com/320x480/" + b + "/0" + b + "/Miki-B-9-0" + i + ".jpg", localFilename);
                            }
                        }
                        else
                        {
                            string localFilename = newPath + "Miki-B-9-" + i + ".jpg";
                            using (WebClient client = new WebClient())
                            {
                                client.DownloadFile("http://cache.thumb.pinkvisual.com/320x480/" + b + "/0" + b + "/Miki-B-9-" + i + ".jpg", localFilename);
                            }
                        }
                    }
                }
                catch
                {

                }
            }
        }
    }
}