How to read file binary in C#?

Question

I want to make a method that takes any file and reads it as an array of 0s and 1s, i.e. its binary code. I want to save that binary code as a text file. Can you help me? Thanks.

Answer 1

Quick and dirty version:

byte[] fileBytes = File.ReadAllBytes(inputFilename);
StringBuilder sb = new StringBuilder();

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

File.WriteAllText(outputFilename, sb.ToString());