CODEWITHSUNDEEP
c#
Bhaskar
Bhaskar

Reputation: 10691

C# problem with byte[]

I am loading a file into a byte[]. By my understanding the byte[] should contain a specific elements of bytes (8-bit). When i print each byte, all of them are not 8-bit (i.e. they dont have the length of 8). My Code:

FileStream stream = File.OpenRead(@"C:\Image\Img.jpg");
byte[] fileByte = new byte[stream.Length];
stream.Read(fileByte, 0, fileByte.Length);

for (int i = 0; i <= fileByte.Length - 1; i++)
{
  Console.WriteLine(Convert.ToString(fileByte[i], 2));
}

Output:

10001110
11101011
10001100
1000111
10011010
10010011
1001010
11000000
1001001
100100

I think my understanding is wrong here, Can you please let me know (or provide me some tutorial links) where I am missing this.

Upvotes: 3

Views: 1221

Answers (5)

David
David

Reputation: 73594

When converting a numeric to a string, you lose any leading zeros. (Note that all of your entries start with "1".) You can use PadLeft to put them back in.

   FileStream stream = File.OpenRead(@"C:\Image\Img.jpg"); 
   byte[] fileByte = new byte[stream.Length]; 
   stream.Read(fileByte, 0, fileByte.Length); 

   for (int i = 0; i <= fileByte.Length - 1; i++) 
   { 
      Console.WriteLine(Convert.ToString(fileByte[i], 2).PadLeft(8,'0')); 

   }

Upvotes: 13

Nestor
Nestor

Reputation: 13990

They all have 8 bits, but the non significant zeroes (the zeroes on the left) are not printed.

Upvotes: 4

Gabriel Magana
Gabriel Magana

Reputation: 4536

Are the bytes without leading zeros? You kinda chose a bad example because we do not know the decimal values you are displaying (ok maybe someone who knows the header structure for a .jpg file knows). I'm willing to bet leading zeros are not displayed in the binary equivalents.

Upvotes: 2

mjv
mjv

Reputation: 75295

It is simply that the leading zeros are not included...

Upvotes: 3

Michael Myers
Michael Myers

Reputation: 192025

Leading 0's don't get printed.

Upvotes: 18

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