学步园

／／获得文件夹路径       

private void button1_Click(object sender, EventArgs e)
        {
          
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            if (fbd.ShowDialog() == DialogResult.OK)
            {
                this.FilePathTextBox.Text = fbd.SelectedPath;
                GetFileInfo(this.FilePathTextBox.Text);
            }
        }

　　　／／取得所有子文件夹并循环对应的大小

        private void GetFileInfo(string strPath)
        {
            try
            {
                DirectoryInfo theFolder = new DirectoryInfo(strPath);
                DirectoryInfo[] dirInfo = theFolder.GetDirectories();
              
                foreach (DirectoryInfo NextFolder in dirInfo)
                {
                    string size = FormatBytes(this.GetFilesSize(Path.Combine(strPath, NextFolder.Name)));
                    this.listBox1.Items.Add(NextFolder.Name + "------" +size );
                    this.listView1.Items.Add(new ListViewItem ( new  string[] {NextFolder.FullName, size}));
                }

            }
            catch (IOException ex)
            {
                Console.WriteLine(ex.Message);
            }
        }

　　／／取子文件夹下所有文件大小总和

        public long GetFilesSize(String path)
        {
            DirectoryInfo directoryInfo = new DirectoryInfo(path);
            long length = 0;
            foreach (FileSystemInfo fsi in directoryInfo.GetFileSystemInfos())
            {
                if (fsi is FileInfo)
                {
                    length += ((FileInfo)fsi).Length;
                }
                else
                {
                    length += GetFilesSize(fsi.FullName);
                }
            }
            return length;
        }

　　／／大小转化成"GB", "MB", "KB", "Bytes"

        public string FormatBytes(long bytes)
        {
            const int scale = 1024;
            string[] orders = new string[] { "GB", "MB", "KB", "Bytes" };
            long max = (long)Math.Pow(scale, orders.Length - 1);

            foreach (string order in orders)
            {
                if (bytes > max)
                {
                    return string.Format("{0:##.##} {1}", decimal.Divide(bytes, max), order);
                }

                max /= scale;
            }
            return "0 Bytes";

        }

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－

／／获得保存文件路径

            SaveFileDialog sfd = new SaveFileDialog();
            sfd.FileName = "fileName.txt";
            if (sfd.ShowDialog() == DialogResult.OK)
            {
                string path =  sfd.FileName;
            }

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－

      private void LogFilePathButton_Click(object sender, EventArgs e)
        {
            this.folderBrowserDialog1 = new FolderBrowserDialog();
            if (this.folderBrowserDialog1.ShowDialog() == DialogResult.OK)
            {
                this.LogFilePathTextBox.Text = this.folderBrowserDialog1.SelectedPath;

                DirectoryInfo mydir = new DirectoryInfo(this.LogFilePathTextBox.Text);

                //フォルダ数
                DirectoryInfo[] listdir = mydir.GetDirectories();
                int count = listdir.Length;
                //ファイル数
                FileInfo[] listfile = mydir.GetFiles();
                count = listfile.Length;
                //ファイルの名前修正
                foreach (FileSystemInfo fsi in mydir.GetFileSystemInfos())
                {
                    if (fsi is FileInfo)
                    {
                        FileInfo fi = (FileInfo)fsi;
                        string LogFileName = System.IO.Path.GetDirectoryName(fi.FullName);
       
                        string s = System.IO.Path.GetExtension(fi.FullName);
                        string y = System.IO.Path.GetFileNameWithoutExtension(fi.FullName);
                        Console.WriteLine(y);
                        if (s == ".jpg")
                        {
                            //System.IO.File.Copy(fi.FullName, x + @"\oo" + fi.Name);
                            System.IO.File.Delete(fi.FullName);

                        }
                    }
                }

            }
            else
            {
                return;
            }
        }

-------------------------------------------------------------------------------------------------------------------------------------------------------