Creating hashes in .Net Core.

createhash.cs

private void button1_Click(object sender, EventArgs e)
{
    byte[] digest;
    string base64digest;

    MD5 md5 = new MD5CryptoServiceProvider();
    digest = md5.ComputeHash(Encoding.UTF8.GetBytes(textBox1.Text));
    base64digest = Convert.ToBase64String(digest, 0, digest.Length);
    textBox3.Text = base64digest;

    SHA256 sha256 = SHA256.Create();
    digest = sha256.ComputeHash(Encoding.UTF8.GetBytes(textBox1.Text));
    base64digest = Convert.ToBase64String(digest, 0, digest.Length); 
    textBox2.Text = base64digest;

}