convert byte to binary

Question

I have FLV file I stored it to byte array and I can read it byte by byte. I want to convert each byte to binary 0s and 1s

I want to convert variable b to binary 1s 0s. for example if b = 70 how to convert it to binary

what function I can use in C# to do this??

here is my code to read FLV file and store it byte array.

byte[] myArray = System.IO.File.ReadAllBytes(@"myFlvFile.flv");

int r = 0;
foreach (var b in myArray)
{
  r += 1;
  txtBit.Text = Environment.NewLine + Convert.ToString(b);

  if (r == 50)
    return;
}

Answer 1

If you want a bit-string:

byte b = 100;

//Will be "1100100"
var bitstring = Convert.ToString(b, 2);

so in your example, just add , 2

The second argument is the base you want to use.

• 2 = binary (0 - 1)
• 8 = octal (0 - 7)
• 16 = hex (0 - F)

and secondary, I have a little improvement on your code :) this will do:

byte[] myArray = System.IO.File.ReadAllBytes(@"myFlvFile.flv");

for (r = 0; r < 50; r++)
{
    txtBit.Text = Environment.NewLine + Convert.ToString(myArray[r], 2);
    //Or if you want to append instead of replace? (I think you do, but that is not what your code do)
    txtBit.Text += Environment.NewLine + Convert.ToString(myArray[r], 2);
}

there is still stuff to improve on - you may want to look at StringBuilder or similar :-) (it is quite inefficient to concatenate the text the way you do it.)

Answer 2

The easiest way is to use BitArray class.

byte[] bytes = System.IO.File.ReadAllBytes(@"C:\yourfile.flv");
BitArray bits = new BitArray(bytes);

for (int counter = 0; counter < bits.Length; counter++)
{
    Console.Write(bits[counter] ? "1" : "0");
    if ((counter + 1) % 8 == 0)
        Console.WriteLine();
}

and you will get something like this:

10000110
10110110
00001110
01011100
00000100
00001100

Obviously, using BitArray is quite ineffective for large files, so if you need to decode long files, use bit binary arithmetic.