将文本文件转换成UTF8格式

复制文件：

protected void CopyAll(string olddirectory, string newdirectory, string dir)
{
    DirectoryInfo info = new DirectoryInfo((dir.Length > 0) ? dir : olddirectory);
    FileInfo[] files = info.GetFiles();
    foreach (FileInfo info2 in files)
    {
        try
        {
            string destFileName = string.Format(@"{0}\{1}", (dir.Length > 0) ? dir.Replace(olddirectory, newdirectory) : newdirectory, info2.Name);
            File.Copy(info2.FullName, destFileName);
            FileInfo info3 = new FileInfo(destFileName);
            info3.Attributes &= FileAttributes.ReadOnly;
            byte[] bytes = File.ReadAllBytes(destFileName);
            string str2 = Encoding.UTF8.GetString(bytes);
            File.WriteAllText(destFileName, File.ReadAllText(destFileName, Encoding.Default), this.UTF8WithOutBom);
            info3.Attributes |= FileAttributes.ReadOnly;
        }
        catch (Exception exception)
        {
            Console.WriteLine(exception.ToString());
        }
    }
    if (info.GetDirectories().Length > 0)
    {
        for (int i = 0; i < info.GetDirectories().Length; i++)
        {
            string path = string.Format(@"{0}\{1}", (dir.Length > 0) ? dir.Replace(olddirectory, newdirectory) : newdirectory, info.GetDirectories()[i].Name);
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
            this.CopyAll(olddirectory, newdirectory, info.GetDirectories()[i].FullName);
        }
    }
}

　

复制文件：

public void CopyDirectoryAndFiles(string olddirectory, string newdirectory)
{
    DirectoryInfo info = new DirectoryInfo(newdirectory);
    if (!info.Exists)
    {
        Directory.CreateDirectory(newdirectory);
    }
    this.CopyAll(olddirectory, newdirectory, "");
}

　　

转换：

private void button1_Click(object sender, EventArgs e)
{
    string text = this.textBox1.Text;
    string newdirectory = this.textBox2.Text;
    this.CopyDirectoryAndFiles(text, newdirectory);
    MessageBox.Show("finished");
}