Convert a String to binary sequence in C#

Question

Possible Duplicate:
How do you convert a string to ascii to binary in C#?

How to convert string such as "Hello" to Binary sequence as 1011010 ?

@Abdul, it could be, we just need to know the mapping algorithm. — Lasse V. Karlsen, May 13 '11 at 10:02
@Lasse V. Karlsen It's the "Super Hello String Compressor v0.1" :-> — herzmeister, May 13 '11 at 10:02
@Sudantha I'm sorry that you didn't understand the problem here. You need to tell us how you want to map the string to bits. Do you want the ascii encoding as a sequence of bits? — Lasse V. Karlsen, May 13 '11 at 10:04
@Sudantha you should ask question with proper clarification so that people wont get confused about your question. — FIre Panda, May 13 '11 at 10:07

score 22 · Accepted Answer · edited Apr 15 '12 at 14:45

22

Try this:

string str = "Hello"; 
byte []arr = System.Text.Encoding.ASCII.GetBytes(str);

edited Apr 15 '12 at 14:45

answered May 13 '11 at 10:03

A B

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9

We would get only byte array through your code... but the query was "Convert a String to binary sequence in C#" – Manu Nair Jan 23 '15 at 12:20
5

Why is this the accepted answer? – Krythic Jun 23 '16 at 00:51

Stecya · Answer 2 · 2011-05-13T10:15:03.767

21

string result = string.Empty;
foreach(char ch in yourString)
{
   result += Convert.ToString((int)ch,2);
}

this will translate "Hello" to 10010001100101110110011011001101111

edited May 13 '11 at 10:15

answered May 13 '11 at 10:04

Stecya

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Your string is only 35 characters. You're missing a `.PadLeft(8, '0')` to your `.ToString()` call. – Michael Sep 02 '15 at 17:13

score 4 · Answer 3 · answered May 13 '11 at 10:18

4

string testString = "Hello";
UTF8Encoding encoding = new UTF8Encoding();
byte[] buf = encoding.GetBytes(testString);

StringBuilder binaryStringBuilder = new StringBuilder();
foreach (byte b in buf)
{
    binaryStringBuilder.Append(Convert.ToString(b, 2));
}
Console.WriteLine(binaryStringBuilder.ToString());

answered May 13 '11 at 10:18

Sergey Vyacheslavovich Brunov

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Good one... This was the code i was searching.... – Manu Nair Jan 23 '15 at 12:18
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How is this not the accepted answer? – Tvde1 Jan 25 '19 at 10:18

PVitt · Answer 4 · 2011-05-13T10:09:52.580

0

Use the BitConverter to get the bytes of the string and then format these bytes to their binary representation:

byte[] bytes = System.Text.Encoding.Default.GetBytes( "Hello" );
StringBuilder sb = new StringBuilder();
foreach ( byte b in bytes )
{
    sb.AppendFormat( "{0:B}", b );
}
string binary = sb.ToString();

edited May 13 '11 at 10:09

answered May 13 '11 at 10:03

PVitt

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-1: There is no overload for BitConverter.GetBytes that takes a string. – Lasse V. Karlsen May 13 '11 at 10:04
Thanks, I just found out myself. Changed the code snippet to use the Encoding. – PVitt May 13 '11 at 10:05

Convert a String to binary sequence in C#

4 Answers4