32-bit signed floating-point number in IEEE 754 format

using System;
//Write a program that shows the internal binary representation of given 32-bit signed floating-point number in IEEE 754 format (the C# type float).
//Example: -27,25  sign = 1, exponent = 10000011, mantissa = 10110100000000000000000.
class IEEE754Format
{
    static void Main()
    {
        float f = -27.25f;

        int bits = BitConverter.ToInt32(BitConverter.GetBytes(f), 0);
        string binary = Convert.ToString(bits, 2);
        binary = binary.PadLeft(32, '0');

        Console.WriteLine("Binary representation: {0}",binary);
        Console.WriteLine("Sign: {0}",binary[0]);
        Console.WriteLine("Exponent: {0}", binary.Substring(1, 8));
        Console.WriteLine("Mantissa: {0}", binary.Substring(9));
    }
}