I have convert a pdf ,exe,jpeg,etc files to its binary (0,1)but its file size greater than its actual figures

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Using c# when I convert a pdf ,exe,jpeg etc files to its corresponding binary 0,1. File size is greater than its original size. What is the reason for it?

Please help me to solve this problem here is the code i have used.

C#

try
{
  byte[] fileBytes = File.ReadAllBytes(textBox1.Text);
  StringBuilder sb = new StringBuilder();

  foreach (byte b in fileBytes)
  {
    sb.Append(Convert.ToString(b, 2).PadLeft(8, '0'));
  }

  File.WriteAllText("outputFilename", sb.ToString());
}
catch (OutOfMemoryException )
{

}

Posted 6-May-11 5:32am

vishnulalr

Updated 6-May-11 5:34am

Kim Togo

v3

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2 solutions

Solution 1

You are not converting it to binary. But to text. You read all bytes from a file, and then convert it to text. 1 byte is converted to 8 char. That is why it gets bigger then the original file.

Posted 6-May-11 5:38am

Kim Togo

Comments

Sergey Alexandrovich Kryukov 6-May-11 12:35pm

...And makes no point, John's right. My 5.
--SA

Kim Togo 6-May-11 13:00pm

Thanks

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#realJSOP · Accepted Answer · 2011-05-06T05:49:00

Every file (even text files) are "binary" when you get right down to brass tacks, because every byte in the file is a byte, regardless of how it's presented to the user. As Kim has already pointed ut, you're reading the original file in as text, and creating the output file as text, and that's why the file is bigger. If you just want to copy a file, use System.IO.File.Copy(). There's no point in doing what you're trying to do unless you're just trying to learn some more involved file handling stuff.