public void ReadFile()
{
// Variables to be filled when the file is read line by line
string locationName, streetNumAndName, county, postCode, latitude, longitude;
string yearDescription, year;
string monthID, maxTemp, minTemp, numDaysAirFrost, monthRainfallMillimetres, monthHoursSunshine;
int numYears, numLocations;
int numMonths = 12;
try
{
StreamReader inputStream = new StreamReader(FileName);
// Number of locations read at the top of the file
numLocations = Convert.ToInt32(inputStream.ReadLine());
// Check locations
if (numLocations > 0)
{
Locations = new List <Location>();
}
else
{
inputStream.Close();
Locations = null;
throw new Exception("There are no locations in the file " + FileName);
}
// Iterates through locations
for (int i = 0; i < numLocations; i++)
{
locationName = inputStream.ReadLine();
streetNumAndName = inputStream.ReadLine();
county = inputStream.ReadLine();
postCode = inputStream.ReadLine();
latitude = inputStream.ReadLine();
longitude = inputStream.ReadLine();
Location newLocation = CreateLocation(locationName, streetNumAndName, county, postCode, latitude, longitude);
numYears = Convert.ToInt32(inputStream.ReadLine());
List <Year> years = new List <Year>();
// Iterates through years
for (int j = 0; j < numYears; j++)
{
yearDescription = inputStream.ReadLine();
year = inputStream.ReadLine();
Year newYear = CreateYear(year, yearDescription);
Month[] months = new Month[numMonths];
// Iterates through months
for (int k = 0; k < numMonths; k++)
{
monthID = inputStream.ReadLine();
maxTemp = inputStream.ReadLine();
minTemp = inputStream.ReadLine();
numDaysAirFrost = inputStream.ReadLine();
monthRainfallMillimetres = inputStream.ReadLine();
monthHoursSunshine = inputStream.ReadLine();
// Last month (month ID = 12) does not have year assigned, skips reading the year
if (k != numMonths - 1)
{
year = inputStream.ReadLine();
}
Month newMonth = new Month(monthID, maxTemp, minTemp, numDaysAirFrost, monthRainfallMillimetres, monthHoursSunshine);
months[k] = newMonth;
}
newYear.MonthObs = months;
years.Add(newYear);
}
newLocation.Years = years;
Locations.Add(newLocation);
}
inputStream.Close();
}
catch (Exception e)
{
throw e;
}
}
private void SetUpLocations()
{
//Variables to be filled when the file is read line by line
string locationName, streetNumAndName, county, postCode, latitude, longitude;
string yearDescription, year;
string monthID, maxTemp, minTemp, numDaysAirFrost, monthRainfallMillimetres, monthHoursSunshine;
//Number of locations and number of years within each location stored to determine number of for loop cycles
int numYears, numLocations;
try
{
//Input stream created to get information from file to the application
StreamReader inputStream = new StreamReader(fileName);
//Number of locations read at the top of the file
numLocations = Convert.ToInt32(inputStream.ReadLine());
//Array of locations in Data class created
Data.storedLocations = new Location[1];
//for loop cycles through every location in the file
for (int i = 0; i < numLocations; i++)
{
//All location details collected temporarily in variables
locationName = inputStream.ReadLine();
streetNumAndName = inputStream.ReadLine();
county = inputStream.ReadLine();
postCode = inputStream.ReadLine();
latitude = inputStream.ReadLine();
longitude = inputStream.ReadLine();
//Number of years read from file
numYears = Convert.ToInt32(inputStream.ReadLine());
//Location object created and location details set by inputing the variables as arguments in the constructor
Location newLocation = new Location(locationName, streetNumAndName, county, postCode, latitude, longitude);
//Years array initialised and created
Year[] years = new Year[1];
//for loop cycles through every year of the location in the file
for (int j = 0; j < numYears; j++)
{
//All year details collected temporarily in variables
yearDescription = inputStream.ReadLine();
year = inputStream.ReadLine();
//Year object created and year details set
Year newYear = new Year(year, yearDescription);
//Months array initialised and created
Month[] months = new Month[1];
//for loop cycles through every month in the year of the location in the file
for (int k = 0; k < 12; k++)
{
//All month details collected temporarily in variables
monthID = inputStream.ReadLine();
maxTemp = inputStream.ReadLine();
minTemp = inputStream.ReadLine();
numDaysAirFrost = inputStream.ReadLine();
monthRainfallMillimetres = inputStream.ReadLine();
monthHoursSunshine = inputStream.ReadLine();
//Last month (month ID = 12) in the file does not have year assigned to it so skip reading the year
if (k != 11)
{
year = inputStream.ReadLine();
}
//Month object created and month details set
Month newMonth = new Month(monthID, maxTemp, minTemp, numDaysAirFrost, monthRainfallMillimetres, monthHoursSunshine);
//Months array length increased by one so that another month can be added in the next iteration
Array.Resize(ref months, months.Length + 1);
//Stores month in appropriate position of the months array
months[k] = newMonth;
}
//When all months have been added to the months array the array length is decreased by one because no more months will be added
//This is done to prevent a null reference exception
Array.Resize(ref months, months.Length - 1);
//Months array assigned to monthly observations array in the year instance
newYear.MonthlyObservations = months;
//Years array length increased by one so that another year can be added in the next iteration
Array.Resize(ref years, years.Length + 1);
//Stores year in appropriate position of the years array
years[j] = newYear;
}
//Prevents null reference exception
Array.Resize(ref years, years.Length - 1);
//Years array assigned to years array in the location instance
newLocation.Years = years;
//Stored locations array increased by one so that another location can be added in the next iteration
Array.Resize(ref Data.storedLocations, Data.storedLocations.Length + 1);
//Stores location instance in appropriate position of the stored locations array in the data class
Data.storedLocations[i] = newLocation;
}
//Prevents null reference exception
Array.Resize(ref Data.storedLocations, Data.storedLocations.Length - 1);
}
//Handles any exceptions that may occur when reading from the file
catch (Exception e)
{
//Displays error message to the user
MessageBox.Show(e.Message);
}
}
