擷取檔案夾的路徑

//擷取檔案夾的路徑
       private void button8_Click(object sender, EventArgs e)
        {
            this.comboBox1.Items.Clear();
            ArrayList list = new ArrayList();
            this.getChirDir(@"C:\bbb", ref list);
            for (int i = 0; i < list.Count; i++)
            {
                comboBox1.Items.Add(list[i]);
            }

        }

        private void getChirDir(string strRoot, ref ArrayList arrilist)
        {
            string[] dirr = Directory.GetDirectories(strRoot);

            foreach (string dir in dirr)
            {
                arrilist.Add(dir);
                getChirDir(dir, ref arrilist);
            }

        }
         //擷取檔案的路徑
        private void button9_Click(object sender, EventArgs e)
        {
            this.comboBox1.Items.Clear();
            //動態方法
            //DirectoryInfo obj = new DirectoryInfo(@"C:\bbb");

            //FileInfo[] objfile = obj.GetFiles();
            //foreach (FileInfo file in objfile)
            //{
            //    this.comboBox1.Items.Add(file.FullName);
            //}
            //靜態方法
            string[] filepath=Directory.GetFiles(@"C:\bbb");
            foreach (string filename in filepath)
            {
                this.comboBox1.Items.Add(filename);
            }
        }