Conversion between a binary string and integer in C#

This post will discuss how to convert a binary string in C# to an integer (and vice-versa).

1. Using `Convert.ToInt32()` method

The standard solution to convert the specified value to a 32-bit signed integer is using the built-in method Convert.ToInt32(). The specified value can be a binary string, unsigned integer, floating-point number, etc.

using System;

public class Example

{

public static void Main()

{

string binary = "1100100";

int i = Convert.ToInt32(binary, 2);

Console.WriteLine(i); // 100

}

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To convert the specified value to a 16-bit signed integer, use the Convert.ToInt16 method. Similarly, to convert the specified value to a 64-bit signed integer, use the Convert.ToInt64 method. The Convert class also offers the unsigned integer counterparts like ToUInt16(), ToUInt32(), and ToUInt64() method.

2. Using `Convert.ToString()` method

To do the opposite, i.e., convert an integer to a binary string, you can use the Convert.ToString() method. It converts the specified integer value to its equivalent string representation in the specified base. This method is demonstrated below:

using System;

public class Example

{

public static void Main()

{

int value = 100;

string binary = Convert.ToString(value, 2);

Console.WriteLine(binary); // 1100100

}

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That’s all about conversion between a binary string and integer in C#.

Conversion between a binary string and integer in C#

1. Using Convert.ToInt32() method

2. Using Convert.ToString() method

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1. Using `Convert.ToInt32()` method

2. Using `Convert.ToString()` method