Calculating the size of the File in C#

Introduction

This code snippet explains how to calculate the size of the file and display in a label control. For example I am taking PDF file to find the size. It Displays the size of the file in Bytes, Kilobytes and Megabytes.

 

//Calculate size of the PDF file
       if (PdfFilePath.EndsWith("pdf"))
       {
           FileInfo info = new FileInfo(PdfFilePath);
           long fileSize = info.Length;
           string strFileSize = FormatFileSize(fileSize);
           lblFileSize.Text = strFileSize;
        }

Assume that PdfFilePath contains the path of the file which we are calculating the size.

private string FormatFileSize(long bytes)
   {
       if (bytes > terabyte)
       {
           return ((float)bytes / (float)terabyte).ToString("0.00 TB");
       }
       else if (bytes > gigabyte)
       {
           return ((float)bytes / (float)gigabyte).ToString("0.00 GB");
       }
       else if (bytes > megabyte)
       {
           return (((float)bytes / (float)megabyte)).ToString("0.00 MB");
       }
       else if (bytes > kilobyte)
       {
           return ((float)bytes / (float)kilobyte).ToString("0.00 KB");
       }
       else return bytes + " Bytes";
   }