using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
//C#批量重命名文件代碼的實現
//添加文件操作空間引用
using System.IO;
namespace WindowsApplication1
{
  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
    }
    private void Form1_Load(object sender, EventArgs e)
    {
    }
    private void button1_Click(object sender, EventArgs e)
    {
      FolderBrowserDialog f1 = new FolderBrowserDialog();
       if (f1.ShowDialog() == DialogResult.OK)
      {
        textBox3.Text = f1.SelectedPath;
       }
    }
    private void button2_Click(object sender, EventArgs e)
    {
     if (textBox3.Text!=""){
      if(textBox1.Text!="")
      {
       string strOldFileName;
       string strNewFileName;
       string strOldPart = this.textBox1.Text.Trim();
       string strNewPart = this.textBox2.Text.Trim();
       string strNewFilePath;
       string strFileFolder;
       int TotalFiles = 0;
       DateTime StartTime = DateTime.Now;//獲取開始時間
       try{
       DirectoryInfo di = new DirectoryInfo(textBox3.Text);
       FileInfo[] filelist = di.GetFiles("*.*");
       strFileFolder = textBox3.Text;
       int i = 0;
        foreach (FileInfo fi in filelist)
        {
          strOldFileName = fi.Name;
          strNewFileName = fi.Name.Replace(strOldPart, strNewPart);
          strNewFilePath = @strFileFolder + "\\" + strNewFileName;
          filelist[i].MoveTo(@strNewFilePath);
          TotalFiles += 1;
          this.listBox1.Items.Add("文件名：" + strOldFileName + "  已重命名為 " + strNewFileName + "");
          i += 1;
      }
      DateTime EndTime = DateTime.Now;//獲取結束時間
      TimeSpan ts = EndTime - StartTime;
      this.listBox1.Items.Add("總耗時：" + ts.Hours.ToString() + "時" + ts.Minutes.ToString() + "分" + ts.Seconds.ToString() + "秒"+ ts.Milliseconds.ToString()+"毫秒");
      }
      catch
      {
      MessageBox.Show("路徑無效!");
      }
      }
        else
        {
        MessageBox.Show("沒有匹配字符");
        }
      }
      else
      {
        MessageBox.Show("請先擇擇路徑!");
      }
    }
  }
}