public string this[string vehicle]
{
get
{
string result = null;
switch (vehicle)
{
case "RegistrationNumber":
if (string.IsNullOrEmpty(RegistrationNumber))
{
result = "It cannot be empty";
}
break;
case "Model":
if (string.IsNullOrEmpty(Model))
{
result = "It cannot be empty";
}
break;
case "Manufacturer":
if (string.IsNullOrWhiteSpace(Manufacturer))
{
result = "it cannot be empty";
}
else if (Manufacturer.Length < 3)
{
result = "it must be minimum of 3 characters";
}
break;
case "MakeYear":
if (string.IsNullOrWhiteSpace(MakeYear.ToString()))
{
result = "it cannot be empty";
}
break;
case "TankCapacity":
if (string.IsNullOrWhiteSpace(TankCapacity.ToString()))
{
result = "it cannot be empty";
}
break;
}
if (ErrorCollection.ContainsKey(vehicle))
{
ErrorCollection[vehicle] = result;
}
else if (result != null)
{
ErrorCollection.Add(vehicle, result);
}
OnPropertyChanged("ErrorCollection");
return(result);
}
}
//Method to withdraw water from tank
public string WithdrawWater(int gallonsToWithdraw)
{
//Declare local variables
string withdrawString;
//Add water if not at capacity
if (gallonsToWithdraw <= WaterLevel)
{
WaterLevel = (WaterLevel - gallonsToWithdraw);
withdrawString = $" Gallons Drained: {gallonsToWithdraw.ToString()} \r\n Current Water Level: {WaterLevel.ToString()} \r\n Tank Capacity: {TankCapacity.ToString()}";
}
else
{
withdrawString = $" Insufficient water level. \r\n Maximum Allowed Gallons: {WaterLevel.ToString()}";
}
//Return value
return(withdrawString);
}
//Method to add water to tank
public string AddWater(int gallonsToAdd)
{
//Declare local variables
string addString;
//Add water if not at capacity
if (gallonsToAdd <= (TankCapacity - WaterLevel))
{
WaterLevel += gallonsToAdd;
addString = $" Gallons Added: {gallonsToAdd.ToString()} \r\n Current Water Level: {WaterLevel.ToString()} \r\n Tank Capacity: {TankCapacity.ToString()}";
}
else
{
addString = $" WARNING! Tank will overflow. \r\n Current Water Level: {WaterLevel.ToString()} \r\n Maximum Additional Gallons: {(TankCapacity - WaterLevel).ToString()}";
}
//Return value
return(addString);
}