private void button1_Click(object sender, EventArgs e)
        {
            SearchFile(textBox2.Text);
            MessageBox.Show("search 結束");
        }

        public void SearchFile(string fileName)
        {
            DirectoryInfo dir = new DirectoryInfo(fileName);
            FileSystemInfo[] fileinfo = dir.GetFileSystemInfos();
            foreach (FileSystemInfo file in fileinfo)
            {
                if (file is DirectoryInfo)
                    SearchFile(file.FullName);
                else
                {
                    if (file.Name==textBox1.Text)
                    {
                        FileInfo fi = new FileInfo(file.FullName);
                        listView1.Items.Add(fi.Name);
                        listView1.Items[listView1.Items.Count - 1].SubItems.Add(fi.FullName);
                        listView1.Items[listView1.Items.Count - 1].SubItems.Add(fi.Length.ToString());
                        listView1.Items[listView1.Items.Count - 1].SubItems.Add(fi.CreationTime.ToString());
                    }
                }
            }

查找文件,由於編寫設定為資料夾底下,所以只能找尋資料夾底下的內容