private bool AddVehicle(IVehicle vehicle)
{
bool returnValue = false;
try
{
//Check the controls for erroneous data
string errMsg = String.Empty;
if (txtRegNo.TextLength == 0)
{
errMsg = "Incorrect vehicle registration number" +
Environment.NewLine;
}
if (cboTypes.SelectedIndex < 0)
{
errMsg += "No vehicle type selected" +
Environment.NewLine;
}
if (!IsNumeric(txtMeter.Text) ||
(IsNumeric(txtMeter.Text) && Double.Parse(txtMeter.Text) < 0))
{
errMsg += "The meter value is incorrect" +
Environment.NewLine;
}
if (!IsNumeric(txtMeter.Text) ||
Double.Parse(txtMeter.Text) < 0 || txtRegNo.TextLength == 0 ||
cboTypes.SelectedIndex < 0)
{
MessageBox.Show(errMsg);
// this is set as (return false;) in example but gives an comp error.
return(returnValue);
}
// assign data to the vehicle object
var type = ((VehicleType)cboTypes.SelectedItem);
var car = new Car()
{
Meter = Double.Parse(txtMeter.Text),
RegistrationNumber = txtRegNo.Text,
TypeId = type.Id,
BasePricePerDay = type.BasePricePerDay,
BasePricePerKm = type.BasePricePerKm,
DayTariff = type.DayTariff,
KmTariff = type.KmTariff
};
// Add the vehicle obj to the Vehicles collection
processor.AddVehicle(car);
// Update the vehicle list on the Rent Vehicles tab
FillAvailableVehicles();
txtRegNo.Text = String.Empty;
txtMeter.Text = String.Empty;
returnValue = true;
}
catch (Exception)
{
returnValue = false;
}
return(returnValue);
}
private bool AddVehicle(IVehicle vehicle)
{
bool returnValue = false;
try
{
//Check the controls for erroneous data
string errMsg = String.Empty;
if (txtRegNo.TextLength == 0)
{
errMsg = "Incorrect vehicle registration number" +
Environment.NewLine;
}
if (cboTypes.SelectedIndex < 0)
{
errMsg += "No vehicle type selected" +
Environment.NewLine;
}
if (!IsNumeric(txtMeter.Text) ||
(IsNumeric(txtMeter.Text) && Double.Parse(txtMeter.Text) < 0))
{
errMsg += "The meter value is incorrect" +
Environment.NewLine;
}
if (!IsNumeric(txtMeter.Text) ||
Double.Parse(txtMeter.Text) < 0 || txtRegNo.TextLength == 0 ||
cboTypes.SelectedIndex < 0)
{
MessageBox.Show(errMsg);
// this is set as (return false;) in example but gives an comp error.
return(returnValue);
}
// assign data to the vehicle object
var type = ((VehicleType)cboTypes.SelectedItem);
var car = new Car()
{
Meter = Double.Parse(txtMeter.Text),
RegistrationNumber = txtRegNo.Text,
TypeId = type.Id,
BasePricePerDay = type.BasePricePerDay,
BasePricePerKm = type.BasePricePerKm,
DayTariff = type.DayTariff,
KmTariff = type.KmTariff
};
// Adding business rules
var rules = new List <BusinessRule <IVehicle> >()
{
new BusinessRule <IVehicle>
{
Property = "Id",
Value = 1,
Comparer = RuleOperator.LessThan
},
new BusinessRule <IVehicle>
{
Property = "Meter",
Value = -1,
Comparer = RuleOperator.GreaterThan
},
new BusinessRule <IVehicle>
{
Property = "RegistrationNumber",
Value = String.Empty,
Comparer = RuleOperator.NotEqual
},
new BusinessRule <IVehicle>
{
Property = "TypeId",
Value = 0,
Comparer = RuleOperator.GreaterThan
}
};
// Test - page 637 in kindle
// var success = new RuleComparer()
//.EvaluateRules(car, rules);
// Add the vehicle obj to the Vehicles collection
processor.AddVehicle(car);
// Update the vehicle list on the Rent Vehicles tab
FillAvailableVehicles();
txtRegNo.Text = String.Empty;
txtMeter.Text = String.Empty;
returnValue = true;
}
catch (Exception)
{
returnValue = false;
}
return(returnValue);
}