Something

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace md5dic
{
    public partial class Form1 : Form
    {
        TextWriter writer;
        TextReader reader;
        int numChecked=0;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            loadList();
            txtHash.Text = HashString("password");
        }

        public string HashString(string Value)
        {
            System.Security.Cryptography.MD5CryptoServiceProvider x = new System.Security.Cryptography.MD5CryptoServiceProvider();
            byte[] data = System.Text.Encoding.ASCII.GetBytes(Value);
            data = x.ComputeHash(data);
            string ret = "";
            for (int i = 0; i < data.Length; i++)
                ret += data[i].ToString("x2").ToLower();
            return ret;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                openFileDialog1.ShowDialog();
                if (openFileDialog1.FileName != null && openFileDialog1.FileName != "openFileDialog1")
                {
                    lstDict.Items.Add(openFileDialog1.FileName);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("error: " + ex.Message.ToString(),"md5Dic error");
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (lstDict.SelectedItem != null)
            {
                lstDict.Items.Remove(lstDict.SelectedItem);
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            saveList();
            Application.Exit();
        }

        public void saveList()
        {
            //save the list
            if (lstDict.Items.Count >= 0)
            {
                int counter = lstDict.Items.Count - 1;

                try
                {
                    writer = new StreamWriter(Application.StartupPath + "\\dics.hs");
                    while (counter >= 0)
                    {
                        writer.WriteLine(lstDict.Items[counter]);
                        lstDict.Items.Remove(counter);
                        counter--;
                    }
                }
                catch (Exception exc)
                {
                    MessageBox.Show("error: " + exc.Message.ToString());
                }
                finally
                {
                    writer.Close();
                }
            }
        }

        public void loadList()
        {
            //loadlist
            int counter = 0;
            try
            {
                reader = new StreamReader("dics.hs");
                while (reader.Read() != null)
                {
                    lstDict.Items.Add(reader.ReadLine().ToString());
                    counter++;
                }
            }
            catch (Exception exce)
            {
                MessageBox.Show("error: " + exce.Message.ToString());
            }
            finally
            {
                reader.Close();
            }
        }

        public void scan()
        {
            numChecked = 0;
            if (lstDict.SelectedItem != null)
            {
                try
                {
                    reader = new StreamReader(lstDict.SelectedValue.ToString());
                    while (reader.Read() != null)
                    {
                        string wordListHash = reader.ReadLine();
                        if (HashString(wordListHash) == txtHash.Text)
                        {
                            txtFound.Text += "found hash! --" + wordListHash + ":" + HashString(wordListHash);
                        }
                        else
                        {
                            lblNumChecked.Text = numChecked.ToString();
                            numChecked++;
                        }
                    }
                }
                catch (Exception excep)
                {
                    MessageBox.Show("error: " + excep.Message.ToString());
                }
                finally
                {
                    reader.Close();
                }
            }
        }

        private void button4_Click(object sender, EventArgs e)
        {
            scan();
        }

        private void lstDict_SelectedIndexChanged(object sender, EventArgs e)
        {

        }
    }
}