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代码

using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Windows.Forms;namespace ImageDuplicate
{public partial class Form1 : Form{public Form1(){InitializeComponent();}string FolderPath = "";List<ImgFileInfo> ltFile = new List<ImgFileInfo>();private void button1_Click(object sender, EventArgs e){FolderBrowserDialog dialog = new FolderBrowserDialog();if (dialog.ShowDialog(this) != DialogResult.OK){return;}textBox1.Text = "";FolderPath = "";ltFile.Clear();dataGridView1.DataSource = null;Application.DoEvents();button1.Enabled = false;button2.Enabled = false;FolderPath = dialog.SelectedPath + @"\";textBox1.Text = FolderPath;DirectoryInfo root = new DirectoryInfo(FolderPath);foreach (FileInfo f in root.GetFiles()){ltFile.Add(new ImgFileInfo(f.Name, GetFileMD5(FolderPath + f.Name)));}//var sortlist = ltFile.OrderBy(o => o.md5).ToList();var listGroup = ltFile.GroupBy(o => o.md5).Select(g => (new{md5 = g.Key,num = g.Count(),fileName = string.Join(",", g.Select(d => d.fileName))})).OrderByDescending(o => o.num).ThenBy(o => o.md5).ToList();dataGridView1.DataSource = listGroup;//自适应所有列的宽度//dataGridView1.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.AllCells);dataGridView1.Columns[0].Width = 300;dataGridView1.Columns[1].Width = 50;dataGridView1.Columns[2].Width = 850;button1.Enabled = true;button2.Enabled = true;}public static string GetFileMD5(string path){if (!System.IO.File.Exists(path)) return "";FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);MD5CryptoServiceProvider md5Provider = new MD5CryptoServiceProvider();byte[] buffer = md5Provider.ComputeHash(fs);string resule = BitConverter.ToString(buffer);md5Provider.Clear();fs.Close();return resule;}/// <summary>/// 去重复/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button2_Click(object sender, EventArgs e){}}
}

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