Form1.cs

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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 使用LINQ技术获取文件详细信息
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)
            {
                listView1.Items.Clear();
                textBox1.Text = folderBrowserDialog1.SelectedPath;
                List<FileInfo> myFiles = new List<FileInfo>();
                foreach (string strFile in Directory.GetFiles(textBox1.Text))
                {
                    myFiles.Add(new FileInfo(strFile));
                }
                var values = from strFile in myFiles
                             group strFile by strFile.Extension into FExten
                             orderby FExten.Key
                             select FExten;
                foreach (var vFiles in values)
                {
                    foreach (var f in vFiles)
                        listView1.Items.Add(f.FullName);
                }
            }
        }

        private void listView1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (listView1.SelectedItems.Count != 0)
            {
                FileInfo myFile = new FileInfo(listView1.SelectedItems[0].Text);
                string[] strAttribute = new string[] { myFile.Name, Convert.ToDouble(myFile.Length / 1024).ToString(), myFile.Extension, myFile.CreationTime.ToString(), myFile.IsReadOnly.ToString(), myFile.LastWriteTime.ToString() };
                var values = from str in strAttribute
                             select new
                             {
                                 Name = strAttribute[0].ToString(),
                                 Size = strAttribute[1].ToString(),
                                 Exten = strAttribute[2].ToString(),
                                 CTime = strAttribute[3].ToString(),
                                 ReadOnly = strAttribute[4].ToString(),
                                 WTime = strAttribute[5].ToString()
                             };
                foreach (var v in values)
                {