C# winform文件批量转编码 选择文件夹

private void btnFile_Click(object sender, EventArgs e)
{
OpenFileDialog fileDialog = new OpenFileDialog();
fileDialog.Multiselect = true;
fileDialog.Title = "请选择文件";
fileDialog.Filter="所有文件(*.*)|*.*";
if (fileDialog.ShowDialog() == DialogResult.OK)
{
string file=fileDialog.FileName;
MessageBox.Show("已选择文件:" + file,"选择文件提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
}
}

private void btnPath_Click(object sender, EventArgs e)
{
FolderBrowserDialog dialog = new FolderBrowserDialog();
dialog.Description = "请选择文件路径";
if (dialog.ShowDialog() == DialogResult.OK)
{
string foldPath = dialog.SelectedPath;
MessageBox.Show("已选择文件夹:" + foldPath, "选择文件夹提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}

private void btnOpen_Click(object sender, EventArgs e)
{
System.Diagnostics.Process.Start("Explorer.exe","c:\\windows");
}

        #region 文件批量转编码

        #region 文件后缀名集合

        //文件后缀名
        private List<string> _fileExtension;

        /// <summary>
        /// 文件后缀名
        /// </summary>
        public List<string> FileExtension
        {
            get { return _fileExtension; }
            set { _fileExtension = value; }
        }

        #endregion

        /// <summary>
        /// 文件批量转编码
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnChangeEncoding_Click(object sender, EventArgs e)
        {
            try
            {
                string strExtension = this.txtExtension.Text.Trim();
                if (!string.IsNullOrWhiteSpace(strExtension))
                {
                    FileExtension = strExtension.ToLower().Split(new char[] { ‘,‘, ‘，‘},StringSplitOptions.RemoveEmptyEntries).ToList();
                }
                else
                {
                    MessageBox.Show("输入文件后缀名!");
                    return;
                }
                string sourceDirName = this.txtSourceFoldPath.Text.Trim();
                if (string.IsNullOrWhiteSpace(sourceDirName))
                {
                    MessageBox.Show("请选择源文件夹!");
                    return;
                }
                string destDirName = this.txtDestFoldPath.Text.Trim();
                if (string.IsNullOrWhiteSpace(destDirName))
                {
                    MessageBox.Show("请选择目标文件夹!");
                    return;
                }
                CopyDirectory(sourceDirName, destDirName);
                MessageBox.Show("转换成功!");
            }
            catch (Exception ex)
            {
                MessageBox.Show("转换失败!" + ex.ToString());
                throw;
            }

        }

        #region 转文件编码

        /// <summary>
        /// 文件转换编码
        /// </summary>
        /// <param name="sourceFile">源文件</param>
        /// <param name="destFile">目标文件</param>
        /// <param name="targetEncoding">编码</param>
        private void ConvertFileEncoding(string sourceFile, string destFile, Encoding targetEncoding)
        {
            destFile = string.IsNullOrWhiteSpace(destFile) ? sourceFile : destFile;
            string strSource = System.IO.File.ReadAllText(sourceFile, System.Text.Encoding.Default);
            System.IO.StreamWriter sw = new System.IO.StreamWriter(destFile, false, targetEncoding);
            sw.WriteLine(strSource);
            sw.Close();
        }


        /// <summary>
        /// 复制文件夹
        /// </summary>
        /// <param name="sourceDirName">源文件</param>
        /// <param name="destDirName">目标文件</param>
        private void CopyDirectory(string sourceDirName, string destDirName)
        {
            try
            {
                if (!Directory.Exists(destDirName))
                {
                    Directory.CreateDirectory(destDirName);
                    System.IO.File.SetAttributes(destDirName, System.IO.File.GetAttributes(sourceDirName));
                }

                if (destDirName[destDirName.Length - 1] != Path.DirectorySeparatorChar) //  =="\\"
                {
                    destDirName = destDirName + Path.DirectorySeparatorChar;
                }
                string[] files = Directory.GetFiles(sourceDirName);
                foreach (string file in files)
                {
                    if (System.IO.File.Exists(destDirName + Path.GetFileName(file)))
                        continue;
                    //转编码复制
                    if (FileExtension.Contains(Path.GetExtension(file).ToLower()))
                    {
                        ConvertFileEncoding(file, destDirName + Path.GetFileName(file), System.Text.Encoding.UTF8);
                        System.IO.File.SetAttributes(destDirName + Path.GetFileName(file), FileAttributes.Normal);
                        //total++;
                    }
                    //System.IO.File.Copy(file, destDirName + Path.GetFileName(file), true);
                    //System.IO.File.SetAttributes(destDirName + Path.GetFileName(file), FileAttributes.Normal);
                    ////total++;
                }

                string[] dirs = Directory.GetDirectories(sourceDirName);//包括路径
                foreach (string dir in dirs)
                {
                    CopyDirectory(dir, destDirName + Path.GetFileName(dir));
                }
            }
            catch (Exception ex)
            {
                StreamWriter sw = new StreamWriter(AppDomain.CurrentDomain.BaseDirectory + "\\log.txt", true);    //System.Web.Providers.Entities
                sw.Write(ex.Message + "     " + DateTime.Now + "\r\n");
                sw.Close();
                throw;
            }

        }


        /// <summary>
        /// 目标文件夹
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnDestFolder_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog fbdlgSource = new FolderBrowserDialog();
            if (fbdlgSource.ShowDialog() == DialogResult.OK)
            {
                this.txtDestFoldPath.Text = fbdlgSource.SelectedPath;
            }
        }

        /// <summary>
        /// 源文件夹
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSourceFolder_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog fbdlgSource = new FolderBrowserDialog();
            if (fbdlgSource.ShowDialog() == DialogResult.OK)
            {
                this.txtSourceFoldPath.Text = fbdlgSource.SelectedPath;
            }
        }

        #endregion

        #endregion