private void buttonAddNewUser_Click(object sender, EventArgs e)
{
try
{
string newUsername = textBoxNewUsername.Text.Trim();
string selectedRole = dropdownRoles.Text;
int selectedRoleValue = (int)dropdownRoles.SelectedValue;
if (!string.IsNullOrEmpty(newUsername))
{
if (_db.Users.Where(u => u.UserName == newUsername).FirstOrDefault() == null)
{
User newUser = new User
{
UserName = newUsername,
Password = Utils.HashPassword(),
IsActive = true
};
_db.Users.Add(newUser);
_db.SaveChanges();
_db.UserRoles.Add(new UserRole
{
UserID = newUser.ID,
RoleID = selectedRoleValue
});
_db.SaveChanges();
_manageUserForm.PopulateUsersGrid();
MessageBox.Show($"A new account has been created for {newUsername} with role: {selectedRole}");
}
else
{
MessageBox.Show($"There is already a username: {newUsername}. Please provide another username", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else
{
MessageBox.Show("Please provide a valid input for username", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
catch (Exception ex)
{
MessageBox.Show($"Error: {ex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void buttonResetPassword_Click(object sender, EventArgs e)
{
try
{
int userID = (int)dataGridViewManageUsers.SelectedRows[0].Cells["UserID"].Value;
User selectedUser = _db.Users.Where(u => u.ID == userID).FirstOrDefault();
if (selectedUser != null)
{
selectedUser.Password = Utils.HashPassword();
}
_db.SaveChanges();
MessageBox.Show($"{selectedUser.UserName}'s password has been reset");
}
catch (Exception ex)
{
MessageBox.Show($"Error: {ex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void buttonReset_Click(object sender, EventArgs e)
{
try
{
if (textBoxResetPassword.Text == textBoxConfirmPassword.Text)
{
User user = _db.Users.Where(u => u.ID == _user.ID).First();
user.Password = Utils.HashPassword(textBoxConfirmPassword.Text);
_db.SaveChanges();
MessageBox.Show("You have reset your password successfully", "Password Reset", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.Close();
}
else
{
MessageBox.Show("The passwords provided do not match. Please try again.", "Password Reset", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
catch (Exception ex)
{
MessageBox.Show($"Error: {ex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void buttonCheckinCar_Click(object sender, EventArgs e)
{
try
{
// get values from form controls
string custName = dropdownCustName.Text;
int custID = (int)dropdownCustName.SelectedValue;
string carToReturn = dropdownCarToReturn.Text;
var dateReturned = dateTimePickerDateReturned.Value;
// declare local variables
string errorMessage = string.Empty;
// form control validation
if (string.IsNullOrWhiteSpace(custName))
{
errorMessage += "Error: Please select a valid input for customer name \n\r";
}
if (string.IsNullOrWhiteSpace(carToReturn))
{
errorMessage += "Error: Please select a valid input for car to return \n\r";
}
if (dateReturned == null)
{
errorMessage += "Error: Please enter valid date \n\r";
}
// form control business validation
if (!string.IsNullOrWhiteSpace(custName) && !string.IsNullOrWhiteSpace(carToReturn) && dateReturned != null)
{
CarRentalRecord selectedCarRecord = _db.CarRentalRecords.First(c => c.ID == custID);
if (selectedCarRecord.DateToReturn == null)
{
throw new NoNullAllowedException();
}
else if (selectedCarRecord.DateToReturn != null && dateReturned.Date < selectedCarRecord.DateToReturn.Value.Date)
{
errorMessage += $"Error: date returned: {dateReturned.Date} cannot be less than date to return: {selectedCarRecord.DateToReturn.Value.Date} \n\r";
}
}
// display error message or save valid input
if (!string.IsNullOrWhiteSpace(errorMessage))
{
MessageBox.Show(errorMessage, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
CarRentalRecord selectedCarRecord = _db.CarRentalRecords.First(c => c.ID == custID);
selectedCarRecord.DateReturned = selectedCarRecord.DateToReturn.Value;
selectedCarRecord.CarRecord.OnLoan = false;
_db.SaveChanges();
MessageBox.Show($"Customer Name: {custName} \n\r" + $"Car: {carToReturn} \n\r" + $"Date Returned: {dateReturned.Date} \n\r");
// refresh dropdowns
PopulateCustNameAndCarToReturnDropdowns();
}
}
catch (NoNullAllowedException nex)
{
MessageBox.Show($"Error: {nex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
catch (Exception ex)
{
MessageBox.Show($"Error: {ex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void buttonAddRentalRecord_Click(object sender, EventArgs e)
{
try
{
// get values from form controls
string custName = textBoxCustName.Text.Trim();
string carType = dropdownCarRented.Text;
var dateRented = dateTimePickerDateRented.Value;
var dateToReturn = dateTimePickerDateToReturn.Value;
Decimal.TryParse(textBoxCarCost.Text.Trim(), out decimal carRentalCost);
// declare local variables
string errorMessage = string.Empty;
// form control validation
if (string.IsNullOrWhiteSpace(custName))
{
errorMessage += "Error: Please enter input value for Customer Name \n\r";
}
if (carRentalCost == 0)
{
errorMessage += "Error: Please enter input value for Car Rental Cost \n\r";
}
if ((dateRented == null || dateToReturn == null) || dateRented.Date > dateToReturn.Date)
{
errorMessage += "Error: Please enter valid date(s) \n\r";
}
if (string.IsNullOrWhiteSpace(carType))
{
errorMessage += "Error: Please enter input value for Car Type \n\r";
}
// display error message or save valid input
if (!string.IsNullOrWhiteSpace(errorMessage))
{
MessageBox.Show(errorMessage, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
CarRentalRecord newCarRentalRecord = new CarRentalRecord
{
CustomerName = custName,
Cost = carRentalCost,
DateRented = dateRented,
DateToReturn = dateToReturn,
CarID = (int)dropdownCarRented.SelectedValue,
};
_db.CarRentalRecords.Add(newCarRentalRecord);
CarRecord carRented = _db.CarRecords.Where(c => c.ID == (int)dropdownCarRented.SelectedValue).First();
carRented.OnLoan = true;
_db.SaveChanges();
MessageBox.Show($"Customer Name: {custName} \n\r" + $"Date Rented: {dateRented.Date} \n\r" +
$"Date To Return: {dateToReturn.Date} \n\r" + $"Cost: {carRentalCost} \n\r" + $"Car: {carType} \n\r");
}
}
catch (Exception ex)
{
MessageBox.Show($"Error: {ex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}