DirectoryInfo类和FileInfo类

DirectoryInfo类和FileInfo类实现的功能跟DIrectory类和File类实现的功能几乎差不多，唯一的区别是后面两个是静态类。

实例：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.IO;namespace DirectoryInfoFIleInfo以及TableLayoutPanel控件{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void btnSelectDir_Click(object sender, EventArgs e) { tblPanel.Refresh(); FolderBrowserDialog fbd = new FolderBrowserDialog(); DialogResult result = fbd.ShowDialog(); if (result != DialogResult.OK) { return; } txtDirectory.Text = fbd.SelectedPath; ShowFileAndDir(txtDirectory.Text); } private void ShowFileAndDir(string curDirectory) { //FileInfo fileInfo; //DirectoryInfo dirInfo; DirectoryInfo curDirInfo = new DirectoryInfo(curDirectory); //获取当前目录下的子目录和文件 FileSystemInfo[] fileSystemInfo = curDirInfo.GetFileSystemInfos(); string fileName; long fileSize; DateTime fileModifyTime; //获取tblPanel控件当前的行数 int rowCount = tblPanel.RowCount; foreach (FileSystemInfo system in fileSystemInfo) { fileName = ""; fileSize = 0; if (system is FileInfo) { FileInfo newFile = system as FileInfo; fileName = newFile.Name; fileSize = newFile.Length; fileModifyTime = newFile.LastWriteTime; } else //system is DirectoryInfo { DirectoryInfo newDir = system as DirectoryInfo; fileName = newDir.Name; fileSize = 0; fileModifyTime = newDir.LastWriteTime; } //动态添加3个Label控件，用于显示文件名，大小，修改时间 Label lblName = new Label(); Label lblSize = new Label(); Label lblTime = new Label(); lblName.Text = fileName; lblSize.Text = fileSize.ToString(); lblTime.Text = fileModifyTime.ToString(); tblPanel.RowCount = ++rowCount; tblPanel.Controls.Add(lblName, 0, rowCount - 1); tblPanel.Controls.Add(lblSize, 1, rowCount - 1); tblPanel.Controls.Add(lblTime, 2, rowCount - 1); } } }}