private void btn_addToHistory_Click(object sender, EventArgs e)
{
//Validate Data
int credits;
try
{
credits = int.Parse(txtBx_credits.Text);
}
catch
{
return;
}
string letterGrade = txtBx_grade.Text;
Class newClass = new Class(txtBx_className.Text, credits, letterGrade);
List<Class> historicClasses;
try
{
historicClasses = DataIO.LoadHistoricClasses();
}
catch
{
//Could not seralzie. New empty list
historicClasses = new List<Class>();
}
historicClasses.Add(newClass);
DataIO.SaveHistoricClasses(historicClasses);
txtBx_credits.Text = "0";
txtBx_grade.Text = "";
txtBx_className.Text = "Class Name";
}
private void calculateGPA()
{
List<string> creditsList = new List<string> { credits1.Text, credits2.Text, credits3.Text, credits4.Text, credits5.Text, credits6.Text };
List<string> gradeList = new List<string> { grade1.Text, grade2.Text, grade3.Text, grade4.Text, grade5.Text, grade6.Text };
List<string> nameList = new List<string> { name1.Text, name2.Text, name3.Text, name4.Text, name5.Text, name6.Text };
List<Class> currentClasses = new List<Class>();
for (int i = 0; i < 6; i++)
{
int credits;
try
{
credits = int.Parse(creditsList[i]);
}
catch
{
break;
}
string letterGrade = gradeList[i];
Class newClass = new Class(nameList[i], credits, letterGrade);
currentClasses.Add(newClass);
}
DataIO.SaveCurrentClasses(currentClasses);
List<Class> allClasses = DataIO.LoadHistoricClasses(); //Start with historic classes
allClasses.AddRange(currentClasses); //Adds current classes
float semesterGPA = calculateGPA(currentClasses);
float cumGPA = calculateGPA(allClasses);
statusLbl_semesterGPA.Text = semesterGPA.ToString("F3");
statusLbl_cumGPA.Text = cumGPA.ToString("F3");
}
private void Calculate_Btn_Click(object sender, RoutedEventArgs e)
{
#region Declare, retrieve and validate input for credits for classes 1-6
int class1Credits;
int class2Credits;
int class3Credits;
int class4Credits;
int class5Credits;
int class6Credits;
if (validateCreditsInput(class1CreditsTxtBox.Text))
class1Credits = Convert.ToInt32(class1CreditsTxtBox.Text[0]);
else
{
class1CreditsTxtBox.Text = "";
class1Credits = 0;
}
if (validateCreditsInput(class2CreditsTxtBox.Text))
class2Credits = Convert.ToInt32(class2CreditsTxtBox.Text[0]);
else
{
class2CreditsTxtBox.Text = "";
class2Credits = 0;
}
if (validateCreditsInput(class3CreditsTxtBox.Text))
class3Credits = Convert.ToInt32(class3CreditsTxtBox.Text[0]);
else
{
class3CreditsTxtBox.Text = "";
class3Credits = 0;
}
if (validateCreditsInput(class4CreditsTxtBox.Text))
class4Credits = Convert.ToInt32(class4CreditsTxtBox.Text[0]);
else
{
class4CreditsTxtBox.Text = "";
class4Credits = 0;
}
if (validateCreditsInput(class5CreditsTxtBox.Text))
class5Credits = Convert.ToInt32(class5CreditsTxtBox.Text[0]);
else
{
class5CreditsTxtBox.Text = "";
class5Credits = 0;
}
if (validateCreditsInput(class6CreditsTxtBox.Text))
class6Credits = Convert.ToInt32(class6CreditsTxtBox.Text[0]);
else
{
class6CreditsTxtBox.Text = "";
class6Credits = 0;
}
#endregion
#region Declare, retrieve and validate input for grades for classes 1-6
string class1Grade;
string class2Grade;
string class3Grade;
string class4Grade;
string class5Grade;
string class6Grade;
if (validateGradesInput(class1GradeTxtBox.Text))
class1Grade = class1GradeTxtBox.Text.ToUpper();
else
{
class1GradeTxtBox.Text = "";
class1Grade = "";
}
if (validateGradesInput(class2GradeTxtBox.Text))
class2Grade = class2GradeTxtBox.Text.ToUpper();
else
{
class2GradeTxtBox.Text = "";
class2Grade = "";
}
if (validateGradesInput(class3GradeTxtBox.Text))
class3Grade = class3GradeTxtBox.Text.ToUpper();
else
{
class3GradeTxtBox.Text = "";
class3Grade = "";
}
if (validateGradesInput(class4GradeTxtBox.Text))
class4Grade = class4GradeTxtBox.Text.ToUpper();
else
{
class4GradeTxtBox.Text = "";
class4Grade = "";
}
if (validateGradesInput(class5GradeTxtBox.Text))
class5Grade = class5GradeTxtBox.Text.ToUpper();
else
{
class5GradeTxtBox.Text = "";
class5Grade = "";
}
if (validateGradesInput(class6GradeTxtBox.Text))
class6Grade = class6GradeTxtBox.Text.ToUpper();
else
{
class6GradeTxtBox.Text = "";
class6Grade = "";
}
#endregion
#region Put all of the classes into Class objects & put them in the array
Class class1 = new Class() { credits = class1Credits, grade = class1Grade };
Class class2 = new Class() { credits = class2Credits, grade = class2Grade };
Class class3 = new Class() { credits = class3Credits, grade = class3Grade };
Class class4 = new Class() { credits = class4Credits, grade = class4Grade };
Class class5 = new Class() { credits = class5Credits, grade = class5Grade };
Class class6 = new Class() { credits = class6Credits, grade = class6Grade };
#endregion
Class[] classes = { class1, class2, class3, class4, class5, class6 }; // an array of Class objects. Effectively, a class schedule.
#region Iterate through class schedule and calculate GPA
int totalCredits = 0;
double totalGPAPoints = 0;
double letterGradeAsDouble = 0;
foreach (Class cl in classes)
{
/* If the class has a valid number of credits */
if (cl.credits.ToString() != "")
{
// Calculate the total GPA credits for the class by credits*grade
switch (cl.grade)
{
case "A":
letterGradeAsDouble = 4.0;
break;
case "A-":
letterGradeAsDouble = 3.67;
break;
case "B+":
letterGradeAsDouble = 3.33;
break;
case "B":
letterGradeAsDouble = 3.0;
break;
case "B-":
letterGradeAsDouble = 2.67;
break;
case "C+":
letterGradeAsDouble = 2.33;
break;
case "C":
letterGradeAsDouble = 2.0;
break;
case "C-":
letterGradeAsDouble = 1.67;
break;
case "D+":
letterGradeAsDouble = 1.33;
break;
case "D":
letterGradeAsDouble = 1.0;
break;
case "D-":
letterGradeAsDouble = .67;
break;
case "F":
letterGradeAsDouble = 0.0;
break;
case "":
cl.credits = 0; /* Invalid input case: Just don't count that class if invalid grade was entered */
break;
default:
letterGradeAsDouble = 0.0;
break;
}
}
totalGPAPoints += (letterGradeAsDouble) * (cl.credits);
totalCredits += cl.credits;
}
double GPA = totalGPAPoints / totalCredits;
if (GPA < 0 || GPA.ToString() == "NaN")
GPA = 0;
gpaTxtBlock.Text = "GPA: " + GPA.ToString("N2");
#endregion
}