public object Clone()
{
QuestionOption newOption = new QuestionOption();
newOption.Id = this.Id;
newOption.index = this.Index;
newOption.IsCorrect = this.IsCorrect;
newOption.OptionContent = this.OptionContent.Clone() as QuestionContent;
return(newOption);
}
internal static IEnumerable <QuestionOption> CreateFractionOption(QuestionContent numerator, QuestionContent denominator)
{
QuestionOption option = new QuestionOption();
QuestionFractionPart fractionPart = new QuestionFractionPart();
fractionPart.Denominator = denominator;
fractionPart.Numerator = numerator;
option.OptionContent.Content = fractionPart.PlaceHolder;
option.OptionContent.QuestionPartCollection.Add(fractionPart);
yield return(option);
}
internal static IEnumerable <QuestionOption> CreateDoubleOption(int leftMinValue, int leftMaxValue, int rightMinValue, int rightMaxValue)
{
ArithmeticDecimalValuePart decimalValue = null;
foreach (ArithmeticDecimalValuePart value in CreateDoubleValue(leftMinValue, leftMaxValue, rightMinValue, rightMaxValue))
{
decimalValue = value;
}
QuestionOption option = new QuestionOption();
option.OptionContent.Content = decimalValue.PlaceHolder;
option.OptionContent.ContentType = ContentType.Text;
option.OptionContent.QuestionPartCollection.Add(decimalValue);
yield return(option);
}
internal static IEnumerable <QuestionOption> CreateArithmeticFractionOption(int minNumeratorValue, int maxNumeratorValue, int minDenominatorValue, int maxDenominatorValue)
{
ArithmeticFractionValuePart fractionValue = null;
foreach (ArithmeticFractionValuePart value in CreateFractionValue(minNumeratorValue, maxNumeratorValue, minDenominatorValue, maxDenominatorValue))
{
fractionValue = value;
}
QuestionOption option = new QuestionOption();
option.OptionContent.Content = fractionValue.PlaceHolder;
option.OptionContent.ContentType = ContentType.Text;
option.OptionContent.QuestionPartCollection.Add(fractionValue);
yield return(option);
}
internal static IEnumerable <QuestionOption> CreateDoubleTextOption(int leftMinValue, int leftMaxValue, int rightMinValue, int rightMaxValue, string suffix)
{
QuestionTextPart textValue = null;
foreach (QuestionTextPart value in CreateDoubleTextValue(leftMinValue, leftMaxValue, rightMinValue, rightMaxValue))
{
textValue = value;
}
textValue.Text += suffix;
QuestionOption option = new QuestionOption();
option.OptionContent.Content = textValue.PlaceHolder;
option.OptionContent.ContentType = ContentType.Text;
option.OptionContent.QuestionPartCollection.Add(textValue);
yield return(option);
}
public void Add(QuestionOption item)
{
base.InnerList.Add(item);
}
public void Remove(QuestionOption item)
{
base.InnerList.Remove(item);
}
public void Insert(int index, QuestionOption item)
{
base.InnerList.Insert(index, item);
}
/// <summary>
/// Append Options to Selectable question
/// </summary>
/// <param name="collection"></param>
/// <param name="optionCount"></param>
/// <param name="isMR">If the option is multi response</param>
internal static IEnumerable <QuestionOption> CreateDecimalOptions(int optionCount,
int minValue,
int maxValue,
bool isMR,
Func <decimal, bool> validationFun,
decimal?correctDecemal = null)
{
Random rand = new Random((int)DateTime.Now.Ticks);
List <QuestionOption> optionList = new List <QuestionOption>();
List <int> optionValueList = new List <int>();
decimal correctValue = 0;
if (correctDecemal != null)
{
correctValue = correctDecemal.Value;
}
for (int j = 0; j < optionCount - 1; j++)
{
while (true)
{
int optionValue = rand.Next(minValue, maxValue + 1);
if (!isMR && validationFun(optionValue))
{
correctValue = optionValue;
Thread.Sleep(10);
continue;
}
IEnumerable <int> queryResult = optionValueList.Where <int>(c => c == optionValue);
if (queryResult.Count <int>() > 0)
{
Thread.Sleep(10);
continue;
}
QuestionOption option = new QuestionOption();
option.OptionContent.Content = optionValue.ToString();
option.OptionContent.ContentType = ContentType.Text;
if (isMR)
{
option.IsCorrect = validationFun(optionValue);
}
optionList.Add(option);
optionValueList.Add(optionValue);
break;
}
}
if (correctValue == 0)
{
while (true)
{
int optionValue = rand.Next(minValue, maxValue);
if (validationFun(optionValue))
{
correctValue = optionValue;
break;
}
Thread.Sleep(10);
}
}
QuestionOption correctOption = new QuestionOption();
correctOption.OptionContent.Content = correctValue.ToString();
correctOption.IsCorrect = true;
int correctOptionIndex = rand.Next(0, optionCount * 8) % optionCount;
if (correctOptionIndex == optionCount - 1)
{
optionList.Add(correctOption);
}
else
{
optionList.Insert(correctOptionIndex, correctOption);
}
Thread.Sleep(50);
return(optionList);
}
internal static IEnumerable <QuestionOption> CreateFractionOptions(int optionCount,
int minValue,
int maxValue,
bool isMR,
Func <ArithmeticFractionValuePart, bool> validationFun,
ArithmeticFractionValuePart correctFraction = null)
{
Random rand = new Random((int)DateTime.Now.Ticks);
List <QuestionOption> optionList = new List <QuestionOption>();
List <ArithmeticFractionValuePart> optionValueList = new List <ArithmeticFractionValuePart>();
ArithmeticFractionValuePart correctValue = null;
if (correctFraction != null)
{
correctValue = correctFraction;
}
for (int j = 0; j < optionCount - 1; j++)
{
while (true)
{
ArithmeticFractionValuePart fractionValue = null;
foreach (ArithmeticFractionValuePart value in CreateFractionValue(minValue, maxValue, minValue == 0 ? 1: minValue, maxValue))
{
fractionValue = value;
}
if (!isMR && validationFun(fractionValue))
{
correctValue = fractionValue;
Thread.Sleep(10);
continue;
}
IEnumerable <ArithmeticFractionValuePart> queryResult = optionValueList.Where <ArithmeticFractionValuePart>(c => c.Equals(fractionValue));
if (queryResult.Count <ArithmeticFractionValuePart>() > 0)
{
Thread.Sleep(10);
continue;
}
QuestionOption option = new QuestionOption();
option.OptionContent.Content = fractionValue.PlaceHolder;
option.OptionContent.ContentType = ContentType.Text;
option.OptionContent.QuestionPartCollection.Add(fractionValue);
if (isMR)
{
option.IsCorrect = validationFun(fractionValue);
}
optionList.Add(option);
optionValueList.Add(fractionValue);
break;
}
}
if (correctValue == null)
{
while (true)
{
ArithmeticFractionValuePart fractionValue = null;
foreach (ArithmeticFractionValuePart value in CreateFractionValue(minValue, maxValue, minValue == 0 ? 1 : minValue, maxValue))
{
fractionValue = value;
}
if (validationFun(fractionValue))
{
correctValue = fractionValue;
break;
}
Thread.Sleep(10);
}
}
QuestionOption correctOption = new QuestionOption();
correctOption.OptionContent.Content = correctValue.PlaceHolder;
correctOption.OptionContent.QuestionPartCollection.Add(correctValue);
correctOption.IsCorrect = true;
int correctOptionIndex = rand.Next(0, optionCount * 8) % optionCount;
if (correctOptionIndex == optionCount - 1)
{
optionList.Add(correctOption);
}
else
{
optionList.Insert(correctOptionIndex, correctOption);
}
Thread.Sleep(50);
return(optionList);
}