C#

private string HexToBinary(string hexString)
{
    string binaryval = String.Empty;
    for (int i = 0; i < hexString.Length; i = i + 2)
    {
       binaryval += Convert.ToString(Convert.ToInt32(hexString.Substring(i, 2), 16), 2).PadLeft(8, '0');
    }

    return binaryval;
}

private string BinaryToHex(string binString)
{
    string hexval = String.Empty;

    for (int i = 0; i < binString.Length; i = i + 8)
    {
       hexval += Convert.ToString(Convert.ToInt32(binString.Substring(i, 8), 2), 16).PadLeft(2, '0');
    }
    return hexval;
}

private string XORStrings(string s1, string s2)
{
    string bin1 = HexToBinary(s1);
    string bin2 = HexToBinary(s2);

    string result = String.Empty;
    for (int i = 0; i < bin1.Length; i++)
    {
         if (bin1[i] == bin2[i])//either both 0 or both 1
             result += "0";
         else //both are different i.e. 1 and 0 or 0 and 1
             result += "1";
    }
    return BinaryToHex(result);

}

max.4u wrote:

helo.. i have a windows service running is there any code to capture the keystrokes from the user ... thans...