Как сделать Progress bar

            Byte[] bytes = File.ReadAllBytes(_path);
            String base64 = Convert.ToBase64String(bytes);
            Console.Write(base64);

using System;
using System.IO;
using System.Security.Cryptography;
using System.Threading.Tasks;
 
const int MB = 1024 * 1024;
 
using Stream source = new FileStream(_path, FileMode.Open, FileAccess.Read, FileShare.None, 10 * MB, true);
using Stream crypto = new CryptoStream(source, new ToBase64Transform(), CryptoStreamMode.Read);
using Stream output = File.Create("output.txt");
 
Task encode = crypto.CopyToAsync(output);
while (source.Position < source.Length)
{
    Report(source.Position, source.Length);
    await Task.Delay(100);
}
 
await encode;
Report(source.Position, source.Length);
Console.WriteLine();
 
void Report(long current, long max)
{
    Console.Write($"\r{current} / {max} ({1.0 * current / max:P2})");
}

using System;
using System.IO;
using System.Security.Cryptography;
using System.Threading.Tasks;
using Spectre.Console;
 
const int MB = 1024 * 1024;
 
using Stream source = new FileStream(_path, FileMode.Open, FileAccess.Read, FileShare.None, 10 * MB, true);
using Stream crypto = new CryptoStream(source, new ToBase64Transform(), CryptoStreamMode.Read);
using Stream output = File.Create("outpu.txt");
 
Task encode = crypto.CopyToAsync(output);
 
await AnsiConsole
    .Progress()
    .Columns(
        new SpinnerColumn(),
        new TaskDescriptionColumn(),
        new ProgressBarColumn(),
        new PercentageColumn(),
        new TransferSpeedColumn(),
        new RemainingTimeColumn())
    .AutoClear(true)
    .StartAsync(async ctx =>
    {
        ProgressTask task = ctx.AddTask("Encoding to Base64", maxValue: source.Length);
        while (source.Position < source.Length)
        {
            task.Value = source.Position;
            await Task.Delay(100);
        }
 
        await encode;
        task.Value = task.MaxValue;
    });
 
Console.WriteLine("Done!");