public bool CanSave(object param)
        {
            var checkmaster = MasterList.Where(x => x.IsCheckedMaster == true).ToList();

            var    check = TransactionList.Where(x => x.IsChecked == true).ToList();
            string date  = this.DateFormat as string;
            int    count = 0;

            if (check != null && check.Count != 0)
            {
                foreach (var item in check)
                {
                    try
                    {
                        if (!string.IsNullOrEmpty(item.StartDate) && !string.IsNullOrWhiteSpace(item.StartDate) && !string.IsNullOrEmpty(item.EndDate) && !string.IsNullOrEmpty(item.EndDate))
                        {
                            //item.StartDate = item.StartDate.Replace('.', '/');
                            //item.StartDate = item.StartDate.Replace('-', '/');
                            //item.EndDate = item.EndDate.Replace('.', '/');
                            //item.EndDate = item.EndDate.Replace('-', '/');
                            var Start = (DateTime.ParseExact(item.StartDate, date, CultureInfo.InvariantCulture));
                            var End   = (DateTime.ParseExact(item.EndDate, date, CultureInfo.InvariantCulture));
                            this.DateErrors = "";
                            if (End > Start)
                            {
                                count++;
                            }
                            else
                            {
                                this.DateErrors = "End Date should be greater than start date!";
                                return(false);
                            }
                        }
                    }
                    catch (Exception ex)
                    {
                        this.DateErrors = "Please enter the date in " + date + " format!";
                        return(false);
                    }
                }
                var checkedcount = check.Count();
                if (checkedcount == count && checkedcount > 0)
                {
                    return(true);
                }
                else
                {
                    return(false);
                }
            }
            else if (checkmaster != null)
            {
                var checkedcount = checkmaster.Count();
                if (checkedcount > 0)
                {
                    return(true);
                }
                else
                {
                    return(false);
                }
            }
            else
            {
                return(false);
            }
        }