Finding all file sizes in a directory in c#

Question

Hi,

I have a string array with different file names (with path) and I want to find out the size of each one. How can I find the size of each file using C#?

Please suggest!!

Answer 1

FileInfo info = new FileInfo(fileNameAndPath);
long size = info.Length;

http://msdn.microsoft.com/en-us/library/system.io.fileinfo.length.aspx

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Answer 2

Hello,

you have to use FileInfo class (use name System.IO namespace). You can get info here: http://www.dotnetperls.com/fileinfo-length

Mitja

Answer 3

Hi Kailashchalwadi,

Another way to achieve the goal is to use byte[] to store the file. The following code shows how to find out the size of the file.

 public Form1()
 {
  InitializeComponent();
  string file = @"d:\test.txt";
 byte[] bytes = File.ReadAllBytes(file);
 label1.Text = GetFileSize(bytes.LongLength);
 }
 private string GetFileSize(double byteCount)
 {
  string size = "0 Bytes";
  if (byteCount >= 1073741824.0)
  size = String.Format("{0:##.##}", byteCount / 1073741824.0) + " GB";
  else if (byteCount >= 1048576.0)
  size = String.Format("{0:##.##}", byteCount / 1048576.0) + " MB";
  else if (byteCount >= 1024.0)
  size = String.Format("{0:##.##}", byteCount / 1024.0) + " KB";
  else if (byteCount >0)
  size = string.Format("{0:##.##}", byteCount) + " Bytes";
  return size;
 }

Hope it helps.

Best Regards,

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