文件目录操作小示例

这几天,陆续都遇见了几个关于遍历指定路径的子目录和文件的问题.就查询整理了一个关于目录和文件操作的小例子.

这个例子是用winform做的,我只贴出cs代码:

using System;
using System.Windows.Forms;
using System.IO;
using System.Collections;

namespace 遍历目录
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public ArrayList al = new ArrayList();

        private void button1_Click(object sender, EventArgs e)
        {
            //声明一个选择路径的对话框
            FolderBrowserDialog folder = new FolderBrowserDialog();
            //打开对话框
            DialogResult sfDia = folder.ShowDialog();
            if (sfDia != DialogResult.Cancel)
            {
                //获取选择的文件夹路径
                string selPath = folder.SelectedPath;
                //先清空集合中 的所有元素
                al.Clear();
                GetAllDirList(selPath);
                //把所有目录信息从ArrayList中读取出来
                listBox1.Items.Clear();
                for (int i = 0; i < al.Count; i++)
                {
                    listBox1.Items.Add(al[i].ToString());
                }
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            #region 参考代码
            ////声明一个打开文件的对话框
            //OpenFileDialog opFile = new OpenFileDialog();
            ////打开对话框
            //DialogResult sfile = opFile.ShowDialog();
            ////获取文件的绝对路径
            //string filePath = opFile.FileName;
            ////获取扩展名
            //string extendName = Path.GetExtension(filePath);
            ////获取文件名
            //string docName = Path.GetFileName(filePath);
            #endregion

            //声明一个选择路径的对话框
            FolderBrowserDialog folder = new FolderBrowserDialog();
            //打开对话框
            DialogResult sfDia = folder.ShowDialog();
            if (sfDia != DialogResult.Cancel)
            {
                //获取选择的文件夹路径
                string selPath = folder.SelectedPath;
                GetAllFileInfoList(selPath);
                //把所有目录信息从ArrayList中读取出来
                listBox1.Items.Clear();
                for (int i = 0; i < al.Count; i++)
                {
                    listBox1.Items.Add(al[i].ToString());
                }
            }
        }

        /// <summary>
        /// 递归获取指定目录的的所有子目录
        /// </summary>
        /// <param name="strBaseDir"></param>
        public void GetAllDirList(string strBaseDir)
        {
            DirectoryInfo di = new DirectoryInfo(strBaseDir);
            DirectoryInfo[] diA = null;
            try
            {
                diA = di.GetDirectories();
            }
            catch (Exception ex)
            {
                listBox1.Items.Add(ex.Message);
            }

            if (diA != null)
            {
                for (int i = 0; i < diA.Length; i++)
                {
                    al.Add(diA[i].FullName);
                    //diA[i].FullName是某个子目录的绝对地址,把它记录在ArrayList中
                    GetAllDirList(diA[i].FullName);
                    //注意:递归了.
                }
            }
        }
        /// <summary>
        /// 获取指定路径下所有文件信息
        /// </summary>
        /// <param name="strBaseDir"></param>
        public void GetAllFileInfoList(string strBaseDir)
        {
            DirectoryInfo di = new DirectoryInfo(strBaseDir);
            FileInfo[] diA = null;
            try
            {
                diA = di.GetFiles();
            }
            catch (Exception ex)
            {
                listBox1.Items.Add(ex.Message);
            }
            if (diA != null)
            {
                //先清空集合中 的所有元素
                al.Clear();
                for (int i = 0; i < diA.Length; i++)
                {
                    al.Add(diA[i].FullName);
                    //diA[i].FullName是某个子目录的绝对地址,把它记录在ArrayList中
                }
            }
        }
    }
}

转载于:https://www.cnblogs.com/fumj/archive/2012/08/07/2626331.html