public MealPlannerForm()
{
InitializeComponent();
//constant for food size to limit the array
int FOOD_SIZE = 1000;
//array limit for the food size
myfoods = new FoodItemClass[FOOD_SIZE];
}
/// <summary>
/// calls the methods from the class to run multiple functions
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnAddFoodItem_Click(object sender, EventArgs e)
{
//new instance of the food item class so we can pull from it.
FoodItemClass fooditems = new FoodItemClass();
//call the chack food method
CheckFood1(fooditems);
//use the fooditem tostring method to populate the listbox accordingly
lstBoxFoodChoices.Items.Add(fooditems.ToStringFood());
}
private void LoadFoods()
{
//string object to hold food items
string foodItem = "";
//string array for the token results of the split method
string[] splitFoodArray;
//local variable to help assign each food item read from file to the food item array
int indexCount = 0;
//streamreader object
StreamReader streamFoodFile;
//try block to loop throught the file untill end of stream, split them at the commas to add them to the array
try
{
//open the food items file
streamFoodFile = File.OpenText(foodFileName);
//end of stream loop
while (!streamFoodFile.EndOfStream)
{
//read a line from the file and assign tif to the food item string
foodItem = streamFoodFile.ReadLine();
//split the string using the ',' character
splitFoodArray = foodItem.Split(',');
//add the name of the food to the list box
lstBoxSelectFoodItem.Items.Add(splitFoodArray[0]);
myfoods[indexCount] = new FoodItemClass(splitFoodArray);
indexCount++;
}
//close the file for reading
streamFoodFile.Close();
}
catch (Exception)
{
//error message
MessageBox.Show("There was a problem reading the food items from the file");
}
}
/// <summary>
/// validates the user input and displays an error message if they get it wrong.
/// </summary>
/// <returns></returns>
private bool CheckFood1(FoodItemClass foodz)
{
//constant for realistic range of input values to make sure user is within reason.
const int REALISTIC_RANGE = 10000;
//temp variables for method
double calories, servings;
int totalfat, saturatedfat, sugar, protein;
//validate all the user input
if (txtBoxFoodName.Text != "" &&
double.TryParse(txtBoxCalPerServ.Text, out calories) && calories < REALISTIC_RANGE &&
double.TryParse(txtBoxServings.Text, out servings) && servings < REALISTIC_RANGE &&
int.TryParse(txtBoxTotalFat.Text, out totalfat) && totalfat < REALISTIC_RANGE &&
int.TryParse(txtBoxSatFat.Text, out saturatedfat) && saturatedfat < REALISTIC_RANGE &&
int.TryParse(txtBoxSugar.Text, out sugar) && sugar < REALISTIC_RANGE &&
int.TryParse(txtBoxProtein.Text, out protein) && protein < REALISTIC_RANGE)
{
//set the values from this end to the backing spaces in the class
foodz.Calories = calories;
foodz.Servings = servings;
foodz.TotalFat = totalfat;
foodz.SaturatedFat = saturatedfat;
foodz.Sugar = sugar;
foodz.Protein = protein;
foodz.FoodName = txtBoxFoodName.Text;
//call my clearboxes method
CLearBoxes();
//return true for the sake of the method
return(true);
}
else
{
//call my clear boxes method
CLearBoxes();
//return false and error message
MessageBox.Show("you have inputed your info incorrectly. Food name is text \n and the rest are to be intergers \n with exception to servings which can be a decimal number \n no numbers are alloud to be above 5000 either.");
//return false so that the values aren't changed in the back of the class by error
return(false);
}
}
