frmMain.cs

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using System;
using System.Windows.Forms;
using System.IO;
namespace WindowsFormsApplication1
{
    public partial class frmMain : Form
    {
        string FolderPath;
        public frmMain()
        {
            InitializeComponent();
        }
        // 下载于www.51aspx.com
        private void button3_Click(object sender, EventArgs e)
        {
            FBD.ShowDialog();
            FolderPath = FBD.SelectedPath;
            this.textBox1.Text = FolderPath;
        }
        // 下载于www.51aspx.com
        private void button1_Click(object sender, EventArgs e)
        {
            int i, j;
            
            if (FolderPath.ToString().Trim()=="") {
                MessageBox.Show("文件夹路径不能为空!","提示",MessageBoxButtons.OK);
                return;
            }
            DirectoryInfo di = new DirectoryInfo(FolderPath);

            renameFiles(FolderPath, textBox2.Text, textBox3.Text,this.PB);

            MessageBox.Show("文件名修改完毕!", "", MessageBoxButtons.OK,MessageBoxIcon.Information);
        }
        private static void renameFiles(string folderPath, string findString, string replaceWith,ProgressBar PB)
        {
            bool ret = false;
            try
            {
                DirectoryInfo di = new DirectoryInfo(folderPath);
                string destFileName = "";
                PB.Minimum = 0;
                PB.Maximum = di.GetFiles().Length;
                foreach (FileInfo fi in di.GetFiles())
                {                 
                    if (fi.Name.IndexOf(findString) > -1)
                    {
                        PB.Value = PB.Value + 1;
                        destFileName = fi.DirectoryName + "\\" + fi.Name.Replace(findString, replaceWith);
                        //MessageBox.Show(destFileName, "ti", MessageBoxButtons.OK);
                        File.Move(fi.FullName, destFileName);
                    }
                }
                ret = true;
                PB.Value = 0;
            }
            catch (System.Exception ex)
            {
                throw new ApplicationException("Error in renameFiles", ex);
            }