How can I get the binary representation of a value [duplicate]

Question

Possible Duplicate:
Decimal to binary conversion in c #

I have number such as 3, 432, 1, etc . Where I need to convert these number to set of zero & ones, and then store these bits in an array of integers, but not sure how I can get the bits representation of any integer.

Please put "c# integer to binary" to google. And the first link will be (surprise-surprise) stackoverflow.com/questions/2954962/… PS: always consult to google before trying to do that with humans - don't think your issue is unique. — zerkms
– zerkms, Commented Oct 19, 2012 at 9:37
"but not sure how I can get the bits representation of any integer." which is answered in the duplicate. — phant0m
– phant0m, Commented Oct 19, 2012 at 9:39
@Rawling: using the same magic tool (the google) you can change the question to "c# integer to array of bytes" and get (surprise-surprise) another question stackoverflow.com/questions/1318933/c-sharp-int-to-byte But indeed, for some people using such a difficult tool like google is a rocket science — zerkms
– zerkms, Commented Oct 19, 2012 at 9:40
@zerkms Now who'd have thought you could find that on Google. — phant0m
– phant0m, Commented Oct 19, 2012 at 9:43

Habib · Accepted Answer · 2012-10-19 09:43:50Z

19

Use Convert.ToString Method (Int32, Int32)

Converts the value of a 32-bit signed integer to its equivalent string representation in a specified base.

int val = 10;
string binaryNumberString = Convert.ToString(val, 2);

To put them in an int array try:

int[] arr = new int[binaryNumberString.Length];
int i=0;
foreach (var ch in binaryNumberString)
{
    arr[i++] = Convert.ToInt32(ch.ToString());
}

edited Oct 19, 2012 at 9:43

answered Oct 19, 2012 at 9:37

Habib

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1 Comment

Rawling Over a year ago

Well, it wasn't right, but now it is! +1

Nikola Davidovic · Accepted Answer · 2012-10-19 09:49:23Z

6

You can use the Convert.ToString() method

int n = 50;
int b = 2;

string binaryForm = Convert.ToString(n, b);

edited Oct 19, 2012 at 9:49

Nikola Davidovic

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answered Oct 19, 2012 at 9:38

Vinod Vishwanath

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4 Comments

John John Over a year ago

thanks for the reply,, but what does base means in this case?

Nikola Davidovic Over a year ago

@Vinod base is a keyword in c#

John John Over a year ago

ya i know but how it will affect the returned bit values i mean , say i define the base as 2 what will be different if i define the base as 8

Vinod Vishwanath Over a year ago

@Nick, My bad. Yes, the variable should be renamed to a non-keyword. int reqBase = 2;

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