Parsing Xml with Ampersand

Converting long string of binary to hex c#

I just knocked this up. Maybe you can use as a starting point...

public static string BinaryStringToHexString(string binary)
{
    if (string.IsNullOrEmpty(binary))
        return binary;

    StringBuilder result = new StringBuilder(binary.Length / 8 + 1);

    // TODO: check all 1's or 0's... throw otherwise

    int mod4Len = binary.Length % 8;
    if (mod4Len != 0)
    {
        // pad to length multiple of 8
        binary = binary.PadLeft(((binary.Length / 8) + 1) * 8, '0');
    }

    for (int i = 0; i < binary.Length; i += 8)
    {
        string eightBits = binary.Substring(i, 8);
        result.AppendFormat("{0:X2}", Convert.ToByte(eightBits, 2));
    }

    return result.ToString();
}

Convert Binary string to Hex string without losing leading zeros

You can simply use

Convert.ToInt32(value,2).ToString("X3")

where the number following the X is the minimum number of digits you want in the final string. I used the number 3, because that was the output you included as an example. It's explained in more detail in this Microsoft documentation.

C# how convert large HEX string to binary

You can just convert each hexadecimal digit into four binary digits:

string binarystring = String.Join(String.Empty,
  hexstring.Select(
    c => Convert.ToString(Convert.ToInt32(c.ToString(), 16), 2).PadLeft(4, '0')
  )
);

You need a using System.Linq; a the top of the file for this to work.

Converting long hex string to binary string throws OverflowException

You could convert a nibble at a time using a lookup array, for example:

public static string HexStringToBinaryString(string hexString)
{
    var result = new StringBuilder();

    string[] lookup =
    {
        "0000", "0001", "0010", "0011",
        "0100", "0101", "0110", "0111",
        "1000", "1001", "1010", "1011",
        "1100", "1101", "1110", "1111"
    };

    foreach (char nibble in hexString.Select(char.ToUpper))
        result.Append((nibble > '9') ? lookup[10+nibble-'A'] : lookup[nibble-'0']);

    return result.ToString();
}

Convert Hex string to Binary string C#

How about using String.PadLeft() ?

string value = "0x001";
string binary = Convert.ToString(Convert.ToInt32(value, 16), 2).PadLeft(12, '0');

Convert 64bit Binary to Long equivalent

Here you go:
http://msdn.microsoft.com/en-us/library/system.convert.toint64.aspx

And examples here: http://www.csharphelp.com/2007/09/converting-between-binary-and-decimal-in-c/

Specifically (where bin is a 'binary' string):

long l = Convert.ToInt64(bin,2);

Conversion of Decimal to Hexadecimal

Easiest way to achieve it would be to regard the digits as ASCII characters(0-9 have ASCII values 48-57) and convert it to Hex like you are already doing.

If you want to do it in another way, you would need to introduce new logic to your program. It depends upon your personal preference.

---

Related Topics