How to convert Decimal to Binary using C#?

Let’s say we want to convert the number 48 to binary.

Firstly, set it and use the / and % operators and loop until the value is greater than 1 −

decVal = 48; while (decVal >= 1) {    val = decVal / 2;    a += (decVal % 2).ToString();    decVal = val; }

Now, display every bit of the binary as shown in the complete code −

Example

 Live Demo

using System; using System.Collections.Generic; using System.Text; namespace Demo {    class MyApplication {       static void Main(string[] args) {          int decVal;          int val;          string a = "";          decVal = 48;          Console.WriteLine("Decimal = {0}", decVal);          while (decVal >= 1) {             val = decVal / 2;             a += (decVal % 2).ToString();             decVal = val;          }          string binValue = "";          for (int i = a.Length - 1; i >= 0; i--) {             binValue = binValue + a[i];          }          Console.WriteLine("Binary = {0}", binValue);          Console.Read();       }    } }

Output

Decimal = 48 Binary = 110000