I Want To Convert A Binary String Into Hexadecimal In C#, How Can I Convert The Binary String Into Hexadecimal? I Need Code In C#?

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i want to convert a binary string into hexadecimal in c#, How can i convert the binary string into hexadecimal? i need code in c#??
for example

string str="0101010101011100";

who can i convert this string to the hexadecimal, i need code in c#??

Posted 16-Sep-14 18:52pm

Member 11063279

Updated 16-Sep-14 19:01pm

Prasad Avunoori

v2

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BillWoodruff 17-Sep-14 1:00am

Is the "binary string" to be converted always the same length: if so, what is that length ? Do you need to do error checking, like making sure every digit in the string is either zero, or one, and making sure that the length of the string is always evenly divided by eight (length of a byte) ?

_Maxxx_ 17-Sep-14 1:07am

I'm not having a go at you, I am genuinely interested. Could you explain why you haven't just searched for a solution using Google? I searched for "convert binary string to hexadecimal c#" for example, and found 138,000 hits, many of which have code samples?
(Of course, thanks to Prasad below, it will now be 138,001)

BillWoodruff 17-Sep-14 1:30am

Because CP QA is where everyone he knows gets their answers quick ?

Member 11063279 24-Sep-14 10:25am

yup it's the best plat form :)

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mhegazy94 · Accepted Answer · 2014-09-16T20:55:00

you can make it from the beginning , convert Binary to decimal and convert decimal to hexadecimal
here are a complete console application that can help you in that.

C#

using System;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string BinaryStr = "1000101001110";
            int Index = 0;
            int Decimal = 0;
            foreach (char Char in BinaryStr.Reverse())
            {
                if (Index != 0)
                {
                    Decimal += Index * 2 * Convert.ToInt32(Char.ToString());
                    Index = Index * 2;
                }
                else
                {
                    Decimal += Convert.ToInt32(Char.ToString());
                    Index++;
                }
            }
            Console.WriteLine("hexadecimal no for : " + BinaryStr + "   =>  " + Decimal.ToString());
            string Hexa1 = toHex(Convert.ToInt64(Decimal));
 Console.WriteLine("hexadecimal no for : " + BinaryStr + "   =>  " + Hexa1 );
        }
        public static string toHex(Int64 d)
        {
            var r = d % 16;
            string result;
            if (d - r == 0)
                result = toChar(Convert.ToInt32(r));
            else
                result = toHex((d - r) / 16) + toChar(Convert.ToInt32(r));
            return result;
        }
        public static string toChar(int n)
        {
            const string alpha = "0123456789ABCDEF";
            return alpha.Substring(n, 1);
        } 
}

George Jonsson · Accepted Answer · 2014-09-16T20:57:00

Solution 3

In this very specific case this line of code would be sufficient.

C#

ushort result = Convert.ToUInt16(str, 2);

Very limited if the string is not padded correctly, though.

If the a string is wanted as a result, just write

C#

result.ToString("X4");

Posted 16-Sep-14 20:57pm

George Jonsson

Prasad Avunoori · Accepted Answer · 2014-09-16T19:03:00

C#

public static string BinaryStringToHexString(string binary)
{
    StringBuilder result = new StringBuilder(binary.Length / 8 + 1);

    // TODO: check all 1's or 0's... Will 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();
}

I Want To Convert A Binary String Into Hexadecimal In C#, How Can I Convert The Binary String Into Hexadecimal? I Need Code In C#?

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