protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
VisaApplication V = (VisaApplication)validationContext.ObjectInstance;
DateTime D = Convert.ToDateTime(value);
if (V.Status == "Approved")
{
if (D >= DateTime.Today)
{
return(ValidationResult.Success);
}
else
{
return(new ValidationResult("Date Of Application Cannot be before the current date"));
}
}
else
{
return(ValidationResult.Success);
}
}
//This method validates the details given by the user to cancel the visa application
//If validation is successfult then it calculates cancellation charges and updates status as 'Cancelled' in database
public static VisaApplication VisaCancellation(VisaApplication V)
{
try
{
//Checks whether the details entered by the user matches in the database
VisaApplication VA = (from c in P.VisaApplications
where c.UserID == V.UserID && c.VisaID == V.VisaID && c.PassportNumber == V.PassportNumber && c.DateOfIssue == V.DateOfIssue
select c).FirstOrDefault();
if (VA != null)
{
int cancellationcost = 0;
//Calculates difference between DateOfExpiry and Today's date in months
int Diff_mon = 0;
if (DateTime.Today < VA.DateOfExpiry)
{
Diff_mon = Math.Abs((VA.DateOfExpiry.Month - DateTime.Today.Month) + 12 * (VA.DateOfExpiry.Year - DateTime.Today.Year));
}
//Calculates cancellation cost based on occupation and 'Diff_mon'
if (VA.Occupation == "Student")
{
if (Diff_mon < 6)
{
cancellationcost = (int)(0.15 * VA.RegistrationCost);
}
else if (Diff_mon >= 6)
{
cancellationcost = (int)(0.25 * VA.RegistrationCost);
}
}
else if (VA.Occupation == "Private Employee")
{
if (Diff_mon < 6)
{
cancellationcost = (int)(0.15 * VA.RegistrationCost);
}
else if (Diff_mon >= 6 && Diff_mon < 12)
{
cancellationcost = (int)(0.25 * VA.RegistrationCost);
}
else if (Diff_mon >= 12)
{
cancellationcost = (int)(0.20 * VA.RegistrationCost);
}
}
else if (VA.Occupation == "Government Employee")
{
if (Diff_mon >= 6 && Diff_mon < 12)
{
cancellationcost = (int)(0.20 * VA.RegistrationCost);
}
else if (Diff_mon >= 12)
{
cancellationcost = (int)(0.25 * VA.RegistrationCost);
}
else if (Diff_mon < 6)
{
cancellationcost = (int)(0.15 * VA.RegistrationCost);
}
}
else if (VA.Occupation == "Self Employed")
{
if (Diff_mon < 6)
{
cancellationcost = (int)(0.15 * VA.RegistrationCost);
}
else if (Diff_mon >= 6)
{
cancellationcost = (int)(0.25 * VA.RegistrationCost);
}
}
else if (VA.Occupation == "Retired Employee")
{
if (Diff_mon < 6)
{
cancellationcost = (int)(0.10 * VA.RegistrationCost);
}
else if (Diff_mon >= 6)
{
cancellationcost = (int)(0.20 * VA.RegistrationCost);
}
}
//Updating into database
VA.CancellationCharges = cancellationcost;
VA.Status = "Cancelled";
P.SaveChanges();
return(VA);
}
else
{
return(null);
}
}
catch (Exception) { }
return(null);
}
//This method generates VisaID,DateOfIssue,DateOfExpiry and RegistrationCost based on validations and conditions mentioned in the SRD and insert in database
public static VisaApplication VisaApply(VisaApplication V)
{
try
{
string visaid = string.Empty;
//Calculates DateOfIssue basedon DateOfApplication
DateTime IssueDate = V.DateOfApplication.AddDays(10);
DateTime ExpiryDate = DateTime.Today;
int registrationcost = 0;
//Checks whether the User Entered PassportNumber is in database or not
PassportApplication PA = (from c in P.PassportApplications
where c.PassportNumber == V.PassportNumber
select c).FirstOrDefault();
if (PA != null)
{
//Based on Occupation of the User UserID,ExpiryDate and RegistrationCost is generated
if (V.Occupation == "Student")
{
int student_visaid = (from c in P.VisaApplications
where c.Occupation == V.Occupation
select c).Count() + 1;
visaid = V.Occupation.Substring(0, 3).ToUpper() + "-" + string.Format("{0:0000}", student_visaid);
ExpiryDate = IssueDate.AddYears(2);
if (V.Country == "USA")
{
registrationcost = 3000;
}
else if (V.Country == "China")
{
registrationcost = 1500;
}
else if (V.Country == "Japan")
{
registrationcost = 3500;
}
}
else if (V.Occupation == "Private Employee")
{
int pe_visaid = (from c in P.VisaApplications
where c.Occupation == V.Occupation
select c).Count() + 1;
visaid = "PE-" + string.Format("{0:0000}", pe_visaid);
ExpiryDate = IssueDate.AddYears(3);
if (V.Country == "USA")
{
registrationcost = 4500;
}
else if (V.Country == "China")
{
registrationcost = 2000;
}
else if (V.Country == "Japan")
{
registrationcost = 4000;
}
}
else if (V.Occupation == "Government Employee")
{
int ge_visaid = (from c in P.VisaApplications
where c.Occupation == V.Occupation
select c).Count() + 1;
visaid = "GE-" + string.Format("{0:0000}", ge_visaid);
ExpiryDate = IssueDate.AddYears(4);
if (V.Country == "USA")
{
registrationcost = 5000;
}
else if (V.Country == "China")
{
registrationcost = 3000;
}
else if (V.Country == "Japan")
{
registrationcost = 4500;
}
}
else if (V.Occupation == "Self Employed")
{
int se_visaid = (from c in P.VisaApplications
where c.Occupation == V.Occupation
select c).Count() + 1;
visaid = "SE-" + string.Format("{0:0000}", se_visaid);
ExpiryDate = IssueDate.AddYears(1);
if (V.Country == "USA")
{
registrationcost = 6000;
}
else if (V.Country == "China")
{
registrationcost = 4000;
}
else if (V.Country == "Japan")
{
registrationcost = 9000;
}
}
else if (V.Occupation == "Retired Employee")
{
int re_visaid = (from c in P.VisaApplications
where c.Occupation == V.Occupation
select c).Count() + 1;
visaid = "RE-" + string.Format("{0:0000}", re_visaid);
ExpiryDate = IssueDate.AddYears(1).AddMonths(6);
if (V.Country == "USA")
{
registrationcost = 2000;
}
else if (V.Country == "China")
{
registrationcost = 2000;
}
else if (V.Country == "Japan")
{
registrationcost = 1000;
}
}
//If ExpiryDate of Visa is after the ExpiryDate of Passport then ExpiryDate of Visa is updated to ExpiryDate of Passport
if (ExpiryDate > PA.ExpiryDate)
{
ExpiryDate = PA.ExpiryDate;
}
//Inserting into database
V.VisaID = visaid;
V.DateOfIssue = IssueDate;
V.DateOfExpiry = ExpiryDate;
V.RegistrationCost = registrationcost;
P.VisaApplications.Add(V);
P.SaveChanges();
return(V);
}
else
{
return(null);
}
}
catch (Exception) { }
return(null);
}
