public ActionResult Index(CustomDate model)
{
if (ModelState.IsValid)
{
CustomDateUtility cdu = new CustomDateUtility();
ViewBag.message = "Total number of days is " + cdu.CalculateDifferenceInDays(model.FromDate, model.ToDate);
}
return(View(model));
}
//To validate the string to be in the date pattern and validate from and to dates.
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
try
{
string inputValue = value.ToString();
string validPattern = @"(^(((0[1-9]|1[0-9]|2[0-8])[\/](0[1-9]|1[012]))|((29|30|31)[\/](0[13578]|1[02]))|((29|30)[\/](0[4,6,9]|11)))[\/](18|[2-9][0-9])\d\d$)|(^29[\/]02[\/](18|[2-9][0-9])(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)$)";
Match match = Regex.Match(inputValue, validPattern);
if (match.Success)
{
var property = validationContext.ObjectType.GetProperty("ToDate");
if (property == null)
{
return(new ValidationResult("Property 'ToDate' is Null"));
}
var toDate = property.GetValue(validationContext.ObjectInstance, null);
string strToDate = toDate == null ? "" : toDate.ToString();
Match checkToDate = Regex.Match(strToDate, validPattern);
if (checkToDate.Success)
{
CustomDateUtility cdu = new CustomDateUtility();
if (!cdu.CheckIfDatesValid(inputValue, strToDate))
{
return(new ValidationResult("To date should be greater than from date"));
}
}
}
else
{
return(new ValidationResult("Invalid date format"));
}
return(ValidationResult.Success);
}
catch (Exception)
{
return(new ValidationResult("Invalid date format"));
}
}
