protected async override void OnAppearing()
        {
            base.OnAppearing();

            string attachmentInfo = string.Empty;

            try
            {
                switch (_classname)
                {
                case "safety":
                    attachmentInfo = ((Models.FlightSafetyReportModel)_viewobject).Attachments;
                    Title          = "Flight Safety";
                    break;

                case "ground":
                    attachmentInfo = ((Models.GroundSafetyReport)_viewobject).Attachments;
                    Title          = "Ground Safety";
                    break;

                case "cabin":
                    attachmentInfo = ((Models.CabibSafetyReport)_viewobject).Attachments;
                    Title          = "Cabin Safety";
                    break;

                case "Injury":
                    attachmentInfo = ((Models.InjuryIllnessReport)_viewobject).Attachments;
                    Title          = "Injury Illness";
                    break;

                case "security":
                    attachmentInfo = ((Models.SecurityModel)_viewobject).Attachments;
                    Title          = "Security";
                    break;

                case "fatigue":
                    attachmentInfo = ((Models.FatigueReport)_viewobject).Attachments;
                    Title          = "Fatigue";
                    break;

                default:
                    Title = char.ToUpper(_classname[0]) + _classname.Substring(1);
                    break;
                }

                var allFilesExists = await _attachementView.CheckAttachments(attachmentInfo);

                if (!allFilesExists)
                {
                    await DisplayAlert("Warning", SPUtility.ATTACHMENT_FILES_NOT_FOUND, "Ok");
                }
            }
            catch (Exception ex)
            {
                await DisplayAlert("Error", ex.Message, "Ok");
            }
        }
        protected async override void OnAppearing()
        {
            base.OnAppearing();

            try
            {
                var allFilesExists = await _attachementView.CheckAttachments(_flightcrew.Attachments);

                if (!allFilesExists)
                {
                    await DisplayAlert("Warning", SPUtility.ATTACHMENT_FILES_NOT_FOUND, "Ok");
                }
            }
            catch (Exception ex)
            {
                await DisplayAlert("Error", ex.Message, "Ok");
            }
        }