public static void UnLike(SPWeb web, SPUser user, SPListItem listItem)
{
try
{
if (listItem["LikedBy"] != null)
{
var likedBy = new SPFieldUserValueCollection(web, listItem["LikedBy"].ToString());
if (likedBy.Any(f => f.LookupId == user.ID))
{
var deleteUser = likedBy.First(f => f.LookupId == user.ID);
int likes = likedBy.Distinct().Count();
likedBy.Remove(deleteUser);
likes = likes - 1;
listItem["LikesCount"] = likes;
listItem["LikedBy"] = likedBy;
listItem.SystemUpdate(false);
}
}
}
catch (Exception e)
{
Logger.Logger.Unexpected("LikesColumn.UnLike", e.Message);
throw e;
}
}