using System.Security.Cryptography;
byte[] data = default; // Some data
using (SHA256 hash = SHA256.Create())
{
    byte[] digest = hash.ComputeHash(data);
}

using System.Security.Cryptography;
byte[] data = default; // Some data
byte[] digest = SHA256.HashData(data);

using System.Security.Cryptography;
byte[] salt = RandomNumberGenerator.GetBytes(32);
byte[] prk = Rfc2898DeriveBytes.Pbkdf2(
    userPassword,
    salt,
    iterations: 200_000,
    HashAlgorithmName.SHA256,
    outputLength: 32);