Input to Method instead of Console.writeline

Hello,

I am dividing a large file into smaller chunks using the code shown below.

Instead of showing it as an output in Console.writeline

I would like the result to used as input to BNum() Method. How can this be done. Please advise?

public class Program
{
public static string BNum()
{
string Val = "";
//Lines of Code
byte[] numbers = Encoding.ASCII.GetString(bytes.ToArray())
//Lines of Code
return Val;
}
public static void Main(string[] args)
{
const int chunkSize = 64;
foreach (IEnumerable<byte> bytes in ReadByChunk(chunkSize))
{
Console.WriteLine("==========================================");
Console.WriteLine(Encoding.ASCII.GetString(bytes.ToArray()));
//More Code
}
}
public static IEnumerablebyte>> ReadByChunk(int chunkSize)
{
IEnumerable<byte> result; int startingByte = 0;
do
{
result = ReadBytes(startingByte, chunkSize);
startingByte += chunkSize; yield return result;
}
while (result.Any());
}
public static IEnumerable<byte> ReadBytes(int startingByte, int byteToRead)
{
byte[] result;
using (FileStream stream = File.Open(@, FileMode.Open, FileAccess.Read, FileShare.Read))
using (BinaryReader reader = new BinaryReader(stream))
{
int bytesToRead = Math.Max(Math.Min(byteToRead, (int)reader.BaseStream.Length - startingByte), 0);
reader.BaseStream.Seek(startingByte, SeekOrigin.Begin);
result = reader.ReadBytes(bytesToRead);
}
return result;
}
}