Csharp/C Sharp/Development Class/BitConverter

Convert byte array to Int32

using System;
using System.IO;
class MainClass
{
    public static byte[] DecimalToByteArray (decimal src){
        using (MemoryStream stream = new MemoryStream()) {
           using (BinaryWriter writer = new BinaryWriter(stream)){
               writer.Write(src);
               return stream.ToArray();
           }
        }
    }
    public static decimal ByteArrayToDecimal (byte[] src){
        using (MemoryStream stream = new MemoryStream(src)){
           using (BinaryReader reader = new BinaryReader(stream)){
              return reader.ReadDecimal();
           }
        }
    }
    public static void Main()
    {
        byte[] b = null;
        b = BitConverter.GetBytes(true);
        Console.WriteLine(BitConverter.ToString(b));
        Console.WriteLine(BitConverter.ToBoolean(b, 0));
        b = BitConverter.GetBytes(3678);
        Console.WriteLine(BitConverter.ToString(b));
        Console.WriteLine(BitConverter.ToInt32(b, 0));
        b = DecimalToByteArray(285998345545.563846696m);
        Console.WriteLine(BitConverter.ToString(b));
        Console.WriteLine(ByteArrayToDecimal(b));
    }
    
}

Convert byte array to String with BitConverter

using System;
using System.IO;
using System.Text;
class MainClass
{
    public static void Main()
    {
        using (StreamWriter output = new StreamWriter("output.txt"))
        {
            string srcString = "Area = \u03A0r^2";
            output.WriteLine("Source Text : " + srcString);
            byte[] utf16String = Encoding.Unicode.GetBytes(srcString);
            output.WriteLine("UTF-16 Bytes: {0}",BitConverter.ToString(utf16String)); 
            byte[] utf8String = Encoding.UTF8.GetBytes(srcString);
            byte[] asciiString = Encoding.ASCII.GetBytes(srcString);
            output.WriteLine("UTF-8 Bytes: {0}",
            BitConverter.ToString(utf8String));
            output.WriteLine("ASCII Bytes: {0}",
            BitConverter.ToString(asciiString));
            output.WriteLine("UTF-8 Text : {0}",Encoding.UTF8.GetString(utf8String));
            output.WriteLine("ASCII Text : {0}",Encoding.ASCII.GetString(asciiString));
        }
    }
}