Get file size without using System.IO.FileInfo?

Question

Is it possible to get the size of a file in C# without using System.IO.FileInfo at all?

I know that you can get other things like Name and

Answer 1

Not a direct answer...because I am not sure there is a faster way using the .NET framework.

Here's the code I am using:

  List list = new List();
  DirectoryInfo di = new DirectoryInfo("C:\\Program Files");
  FileInfo[] fiArray = di.GetFiles("*", SearchOption.AllDirectories);
  foreach (FileInfo f in fiArray)
    list.Add(f.Length);

Running that, it took 2709ms to run on my "Program Files" directory, which was around 22720 files. That's no slouch by any means. Furthermore, when I put *.txt as a filter for the first parameter of the GetFiles method, it cut the time down drastically to 461ms.

A lot of this will depend on how fast your hard drive is, but I really don't think that FileInfo is killing performance.

NOTE: I thikn this only valid for .NET 4+