Why is the file size smaller than expected?

Question

.NET

Good afternoon!
I'm trying to get the weight of a random file in 2 ways.

Method 1.

string filePath = @"C:\Users\User\Desktop\new.txt";
FileInfo fileInfo = new FileInfo(filePath);
           
Console.WriteLine(fileInfo.Length);

Method 2.

string filePath = @"C:\Users\User\Desktop\new.txt";
using(FileStream fs = new FileStream(filePath, FileMode.Open)) 
            {
                byte[] fileBytes = System.Text.Encoding.UTF8.GetBytes(filePath);
                Console.WriteLine($"Вес массива байтов {fileBytes.Length}");
            }

Why is the file size different?

Answer 1

In the first case you get the size of the file
In the second case you get the length of the string filePath in bytes