/// <summary>
/// Returns unique hash for the <paramref name="activity"/> instance.
/// <seealso cref="ActivityUtils.GetActivityHash"/>.
/// </summary>
/// <param name="activity">Activity instance.</param>
/// <param name="userConnection"><see cref="UserConnection"/> instance.</param>
/// <returns>Unique hash for the <paramref name="activity"/> instance.</returns>
protected virtual string GetActivityHash(Entity activity, UserConnection userConnection)
{
TimeZoneInfo currentTimeZone = userConnection.CurrentUser.TimeZone;
return(ActivityUtils.GetActivityHash(activity.GetTypedColumnValue <string>("Title"),
string.Empty, activity.GetTypedColumnValue <DateTime>("StartDate").Date,
activity.GetTypedColumnValue <DateTime>("DueDate").Date, activity.GetTypedColumnValue <Guid>("PriorityId"),
activity.GetTypedColumnValue <Guid>("StatusId").ToString(), currentTimeZone));
}