C#获得文件属性信息的实现方法

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
namespace 获取文件属性
{
 public class Form1 : System.Windows.Forms.Form
 {
 private System.Windows.Forms.ListBox listBox1;
 private System.Windows.Forms.Button button1;
 private System.Windows.Forms.OpenFileDialog openFileDialog1;
 private System.ComponentModel.Container components = null;
 public void AddItem(string sItem)
 {
  listBox1.Items.Add(sItem); // 添加项 sItem 到 listBox1 中
 }
 public Form1()
 {
  InitializeComponent();
 }
 protected override void Dispose( bool disposing )
 {
  if( disposing )
  {
  if (components != null)
  {
   components.Dispose();
  }
  }
  base.Dispose( disposing );
 }
 #region Windows 窗体设计器生成的代码
 private void InitializeComponent()
 {
  this.listBox1 = new System.Windows.Forms.ListBox();
  this.button1 = new System.Windows.Forms.Button();
  this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
  this.SuspendLayout();
  // listBox1
  this.listBox1.ItemHeight = 12;
  this.listBox1.Location = new System.Drawing.Point(8, 56);
  this.listBox1.Name = "listBox1";
  this.listBox1.Size = new System.Drawing.Size(272, 208);
  this.listBox1.TabIndex = 0;
  // button1
  this.button1.Location = new System.Drawing.Point(96, 8);
  this.button1.Name = "button1";
  this.button1.Size = new System.Drawing.Size(96, 32);
  this.button1.TabIndex = 1;
  this.button1.Text = "请选择文件";
  this.button1.Click += new System.EventHandler(this.button1_Click);
  // Form1
  this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
  this.ClientSize = new System.Drawing.Size(292, 273);
  this.Controls.Add(this.button1);
  this.Controls.Add(this.listBox1);
  this.Name = "Form1";
  this.Text = "获取文件属性";
  this.ResumeLayout(false);
 }
 #endregion
 [STAThread]
 static void Main()
 {
  Application.Run(new Form1());
 }
 private void button1_Click(object sender, System.EventArgs e)
 {
  if(this.openFileDialog1.ShowDialog() == DialogResult.OK)
  {
  // 清除 listBox1 中所有的项
  listBox1.Items.Clear();
  FileInfo file = new FileInfo(this.openFileDialog1.FileName);
  // 向 ListBox 中一次添加一个项，通过防止该控件绘图来维护性能，
  // 直到调用 EndUpdate 方法为止
  listBox1.BeginUpdate();
  // 获取文件名
  AddItem("文件名 : " + file.Name);
  // 获取文件的长度
  AddItem("文件长度(bytes) : " + file.Length);
  // 获取当前 FileSystemInfo 对象的创建时间
  AddItem("创建时间 : " + file.CreationTime.ToString());
  // 获取上次访问当前文件或目录的时间
  AddItem("最后访问时间 : " + file.LastAccessTime.ToString());
  // 获取上次写入当前文件或目录的时间
  AddItem("最后写入时间 : " + file.LastWriteTime.ToString());
  listBox1.EndUpdate();
  }
 }
 }
}