private void SetPassword(string user, string userPassword)
{
   string pwdToHash = userPassword + "^Y8~JJ"; // ^Y8~JJ is my hard-coded salt
   string hashToStoreInDatabase = BCrypt.HashPassword(pwdToHash, BCrypt.GenerateSalt());
   using (SqlConnection sqlConn = new System.Data.SqlClient.SqlConnection(...)
   {
     sqlConn.Open();
     SqlCommand cmSql = sqlConn.CreateCommand();
     cmSql.CommandText = "UPDATE LOGINS SET PASSWORD=@parm1 WHERE USERNAME=@parm2";
     cmSql.Parameters.Add("@parm1", SqlDbType.Char);
     cmSql.Parameters.Add("@parm2", SqlDbType.VarChar);
     cmSql.Parameters["@parm1"].Value = hashToStoreInDatabase;
     cmSql.Parameters["@parm2"].Value = user;
     cmSql.ExecuteNonQuery();
   }
 }

private bool DoesPasswordMatch(string hashedPwdFromDatabase, string userEnteredPassword)
{
    return BCrypt.CheckPassword(userEnteredPassword + "^Y8~JJ", hashedPwdFromDatabase);
}