c# DirectoryInfo應用

DirectoryInfo di = new DirectoryInfo(@"\\192.168.0.1\old");
//所有檔案列表包含子資料夾
var queryfileall = di.GetFiles("*", SearchOption.AllDirectories);
//指定單一副檔名
var queryfileone = di.GetFiles("*.jpg", SearchOption.AllDirectories);
//指定多重副檔名
string[] extensions = new[] { ".jpg", ".mp3"};
var queryfilemultiple  = di.GetFiles("*", SearchOption.AllDirectories).Where(x => extensions.Contains(x.Extension.ToLower())).ToArray();

//建立資料夾
string newpath =  @"\\192.168.0.1\new";
if (!Directory.Exists(newpath))
{
	Directory.CreateDirectory(newpath);
}
           

foreach (var item in queryfile)
{
	try
   {
   	   //可自行變化...
   	   //複製檔案
		if (!File.Exists(newpath + item.Name))
         item.MoveTo(newpath + item.Name);
   }
   catch (Exception ex)
   {

      throw new Exception(ex.Message);
   }   
}

//方法2
  DirectoryInfo root = new DirectoryInfo(@"\\192.168.0.1\old");
  FileInfo[] files = root.GetFiles();
  foreach (var item in files)
 {}

參考來源
Get multiple files with different extension