const string executeLog = "EXEC master..xp_logevent @errorNumber, @message, informational";
using (SqlCommand cmd = new SqlCommand(executeLog, connection))
{
    cmd.CommandType = CommandType.Text;
    cmd.Parameters.AddWithValue("@errorNumber", 60001);
    cmd.Parameters.AddWithValue("@message", url);

    cmd.ExecuteScalar();
}

grant execute on xp_logevent to sa