private QuestionDbo AddSimultaneous(LinearSimultaneousEquationsDbo equations)
{
var questionType = context.QuestionTypeDbo.First(type => type.Type == "simultaneous");
context.LinearSimultaneousEquationsDbo.Add(equations);
context.SaveChanges();
var question = new QuestionDbo(equations.ID, questionType);
context.QuestionDbo.Add(question);
context.SaveChanges();
return(question);
}
private QuestionDbo AddQuadratic(QuadraticEquationDbo equation)
{
var questionType = context.QuestionTypeDbo.First(type => type.Type == "quadratic");
context.QuadraticEquationDbo.Add(equation);
context.SaveChanges();
var question = new QuestionDbo(equation.ID, questionType);
context.QuestionDbo.Add(question);
context.SaveChanges();
return(question);
}
private IQuestion FindQuestionCorrespondingToQuestionDbo(QuestionDbo question)
{
var questionType = question.QuestionType.Type;
if (questionType == "quadratic")
{
return(context.QuadraticEquationDbo
.First(quadratic => quadratic.ID == question.SpecificQuestionID)
.CovertToQuadraticEquation());
}
else if (questionType == "simultaneous")
{
return(context.LinearSimultaneousEquationsDbo
.First(simultaneous => simultaneous.ID == question.SpecificQuestionID)
.CovertToLinearSimultaneousEquations());
}
else
{
throw new NotImplementedException();
}
}
public WorksheetQuestionDbo(QuestionDbo question, WorksheetDbo worksheet, int questionNumber)
{
Question = question;
Worksheet = worksheet;
QuestionNumber = questionNumber;
}