//Existing string from another text box "rev"
MemoryStream ms_memStream = new MemoryStream();
            BinaryWriter br_binaryWriter = new BinaryWriter(ms_memStream);
            try
            {
                br_binaryWriter.Write(rev);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace stringToBinary
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void m_ConvertToBin_Click(object sender , EventArgs e)
{
m_Converted.Text = "";
string _someString = m_String.Text;
if (_someString == string.Empty ||
_someString == null)
{
_someString = " ";
}
ASCIIEncoding _toBinary = new ASCIIEncoding();
byte[] _stringRepresentation = _toBinary.GetBytes(_someString);
foreach (byte _byte in _stringRepresentation)
{
double _preDecimal = 0 ,
_aftDecimal = 0 ,
_num = (double)_byte ,
_binConst = 2;
int _Binary = 0;
/*
* predecimal is the numbers before the decimal place so in 4.9 it would be the 4
* aftDecimal is the numbers after the decimal place; so in 4.9 it would be the 9
*/
//since we are working with a byte of data we have 8 binary digits
for (int i = 0 ; i < 8 ; ++i)
{
if (_num != 0)
{
if (i == 0)
{
//get the before and after decimal places
_preDecimal = (double)System.Math.Floor((decimal)(_num / _binConst));
_aftDecimal = (_num / _binConst) % 1;
//add them to the binary number
_Binary = (int)_aftDecimal * (int)_binConst;
//update the number we are working with
_num = (int)_preDecimal;
}
if (i == 1)
{
//get the before and after decimal places
_preDecimal = (double)System.Math.Floor((decimal)(_num / _binConst));
_aftDecimal = (_num / _binConst) % 1;
//add them to the binary number
_Binary += (int)(_aftDecimal * _binConst) * 10;
//update the number we are working with
_num = (int)_preDecimal;
}
if (i == 2)
{
//get the before and after decimal places
_preDecimal = (double)System.Math.Floor((decimal)(_num / _binConst));
_aftDecimal = (_num / _binConst) % 1;
//add them to the binary number
_Binary += (int)(_aftDecimal * _binConst) * 100;
//update the number we are working with
_num = (int)_preDecimal;
}
 
if (i == 3)
{
//get the before and after decimal places
_preDecimal = (double)System.Math.Floor((decimal)(_num / _binConst));
_aftDecimal = (_num / _binConst) % 1;
//add them to the binary number
_Binary += (int)(_aftDecimal * _binConst) * 1000;
//update the number we are working with
_num = (int)_preDecimal;
}
if (i == 4)
{
//get the before and after decimal places
_preDecimal = (double)System.Math.Floor((decimal)(_num / _binConst));
_aftDecimal = (_num / _binConst) % 1;
//add them to the binary number
_Binary += (int)(_aftDecimal * _binConst) * 10000;
//update the number we are working with
_num = (int)_preDecimal;
}
if (i == 5)
{
//get the before and after decimal places
_preDecimal = (double)System.Math.Floor((decimal)(_num / _binConst));
_aftDecimal = (_num / _binConst) % 1;
//add them to the binary number
_Binary += (int)(_aftDecimal * _binConst) * 100000;
//update the number we are working with
_num = (int)_preDecimal;
}
if (i == 6)
{
//get the before and after decimal places
_preDecimal = (double)System.Math.Floor((decimal)(_num / _binConst));
_aftDecimal = (_num / _binConst) % 1;
//add them to the binary number
_Binary += (int)(_aftDecimal * _binConst) * 1000000;
//update the number we are working with
_num = (int)_preDecimal;
}
if (i == 7)
{
//get the before and after decimal places
_preDecimal = (double)System.Math.Floor((decimal)(_num / _binConst));
_aftDecimal = (_num / _binConst) % 1;
//add them to the binary number
_Binary += (int)(_aftDecimal * _binConst) * 10000000;
//update the number we are working with
_num = (int)_preDecimal;
}
}
}
m_Converted.Text += _Binary.ToString() + "--";
}
}
}
}