BusinessService- .Net

   public Result<MessageCenterSearchResult> SearchText(long userId, string textToSearch, EnumMessageCenterFilter msgFilter, long roleId, int pageNo = 1, int pageSize = 100, MethodOptions options = null)
        {
            var f = "SearchText";

            if (options == null)
            {
                options = MethodOptions.Default;
            }

            var log = GetLogger(f, options.Log);

            try
            {
                log.AddInfoString(f, "Parameters: userid=" + userId + ", searchedText=" + textToSearch + ", MessageFilter=" + msgFilter + ", pageNo=" + pageNo + ", pageSize=" + pageSize);

                var searchMsgPredicate = PredicateBuilder.True<ConversationDetail>();
                var resultCount = 0;

                
                switch (msgFilter)
                {
                    case EnumMessageCenterFilter.Unread:
                        //if (roleId == (int) EnumUserType.PublicUser)
                        //{
                        //    searchMsgPredicate = searchMsgPredicate.And(cd => cd.SenderUserId == userId && cd.Conversation.StartingUserRoleIds.Contains(roleId.ToString()));
                        //}
                        //else
                        //{
                        //    searchMsgPredicate = searchMsgPredicate.And(cd => cd.SenderUserId == userId && cd.Conversation.StartingUserRoleIds.Contains(roleId.ToString()) || cd.ReceiverUserId == userId && cd.Conversation.ReceivingUserRoleIds.Contains(roleId.ToString()));
                        //    //.searchMsgPredicate = searchMsgPredicate.And(cd => cd.SenderUserId == userId && cd.Conversation.ReceivingUserRoleIds.Contains(roleId.ToString()));
                        //}
                        searchMsgPredicate = searchMsgPredicate.And(cd => cd.Conversation.StartingUserId == userId && cd.Conversation.StartingUserRoleIds.Contains(roleId.ToString()) || cd.Conversation.ReceivingUserId == userId && cd.Conversation.ReceivingUserRoleIds.Contains(roleId.ToString()));
                        searchMsgPredicate = searchMsgPredicate.And(cd => cd.ReceiverUserId == userId && cd.ReceiverReadDate.HasValue == false);
                        break;
                    case EnumMessageCenterFilter.Archived:
                        searchMsgPredicate = searchMsgPredicate.And(cd => cd.SenderUserId == userId || cd.ReceiverUserId == userId);
                        searchMsgPredicate = searchMsgPredicate.And(cd=>(cd.Conversation.StartingUserId == userId && cd.Conversation.SenderArchiveDate.HasValue && cd.Conversation.StartingUserRoleIds.Contains(roleId.ToString())) || (cd.Conversation.ReceivingUserId == userId && cd.Conversation.ReceiverArchiveDate.HasValue && cd.Conversation.ReceivingUserRoleIds.Contains(roleId.ToString())));
                        break;
                    default: //EnumMessageCenterFilter.All
                        searchMsgPredicate = searchMsgPredicate.And(cd => (cd.SenderUserId == userId || cd.ReceiverUserId == userId) && cd.ReceiverReadDate.HasValue);
                        searchMsgPredicate = searchMsgPredicate.And(cd => (cd.Conversation.StartingUserId == userId && cd.Conversation.SenderArchiveDate.HasValue == false && cd.Conversation.StartingUserRoleIds.Contains(roleId.ToString())) || (cd.Conversation.ReceivingUserId == userId && cd.Conversation.ReceiverArchiveDate.HasValue == false && cd.Conversation.ReceivingUserRoleIds.Contains(roleId.ToString())));
                        //searchMsgPredicate = searchMsgPredicate.And(cd => (cd.Conversation.StartingUserId == userId ) || (cd.Conversation.ReceivingUserId == userId));
                        break;
                }

                if (pageNo <= 0)
                {
                    pageNo = 1;
                }

                if (pageSize <= 0)
                {
                    pageSize = 100;
                }

                //We have 3 Main Categories to search so dividing the whole pageSize by 3 to get result from Every Category
                //pageSize = pageSize / 3;

                //Searches the text in Messages
                var msgSearchResult = MessagePanelSearch(userId, textToSearch, searchMsgPredicate, pageNo, pageSize, ref resultCount);

                //Searches the text in Property Address / Direct Contact Name / Appraisal Request Name
                var lstPropResult = PropertyPanelSearch(userId, textToSearch, searchMsgPredicate, pageNo, pageSize, ref resultCount);

                //Searches the text in Property Agent / Property End User's Name
                var contactResult = PropertyContactPanelSearch(userId, textToSearch, searchMsgPredicate, pageNo, pageSize, ref resultCount);

                //Consolidating the complete Result in one list
                var lstMsgs = msgSearchResult.ToList();
                var lstProperties = lstPropResult.ToList();
                var lstContacts = contactResult.ToList();

                //var lstResult = new List<MessageAutoFillSerachResult>();

                //var lstResult = new List<KeyValuePair<string, List<MessageSerachResult>>>();
                var result = new MessageCenterSearchResult();
                
                if (lstMsgs.Count > 0)
                {
                    result.Messages = lstMsgs.ToArray();
                }

                if (lstProperties.Count > 0)
                {
                    result.Properties = lstProperties.ToArray();
                }

                //If search is from EndUser then do not send this (IInd Panel is not there in case of EndUser)
                if (lstContacts.Count > 0)
                {
                    result.Users = lstContacts.ToArray();
                }

                return new Result<MessageCenterSearchResult>
                {
                    Data = result,
                    ResultType = ResultType.Success,
                    Message = resultCount.ToString()
                };

            }
            catch (Exception ex)
            {
                log.AddErrorString(f + " Exception", "Exception: " + ex.Message + "; Stack Trace: " + ex.StackTrace);

                if (ex.InnerException != null)
                {
                    log.AddErrorString(f + " Inner Exception", "Inner Exception Message:" + ex.InnerException.Message + "; Stack Trace:" + ex.InnerException.StackTrace);
                }

                return ReturnException<MessageCenterSearchResult>(ex);
            }
            finally
            {
                Parallel.Invoke(() =>
                {
                    log.Save();
                });
            }
        }