private static void CreateSection(SoonLearning.Assessment.Data.Section section,
int index,
FlowDocument flowDocument,
bool showAnswer,
bool showResponse,
Exercise exercise)
{
Paragraph sectionPara = new Paragraph();
flowDocument.Blocks.Add(sectionPara);
// Section Title
Run runTItle = new Run(section.Title + section.Description);
sectionPara.Inlines.Add(runTItle);
// Create Questions
for (int i = 0; i < section.QuestionCollection.Count; i++)
{
CreateQuestion(section.QuestionCollection[i],
i,
flowDocument,
showAnswer,
showResponse,
exercise.GetQuestionResponse(section.QuestionCollection[i].Id));
}
}
protected override void AppendQuestion(SectionBaseInfo info, SoonLearning.Assessment.Data.Section section)
{
switch (info.QuestionType)
{
case QuestionType.MultiChoice:
this.CreateMCQuestion(info, section);
break;
case QuestionType.FillInBlank:
this.CreateFIBQuestion(info, section);
break;
case QuestionType.Table:
this.CreateTableQuestion(info, section);
break;
}
}
protected virtual SoonLearning.Assessment.Data.Section CreateSection(SectionBaseInfo info, BackgroundWorker worker)
{
SoonLearning.Assessment.Data.Section section = ObjectCreator.CreateSection(info.Name, info.Description);
Random rand = new Random((int)DateTime.Now.Ticks);
int generatedCount = 0;
while (true)
{
if (generatedCount == info.QuestionCount ||
generatedCount == info.MaxQuestionCount)
{
break;
}
try
{
AppendQuestion(info, section);
}
catch (NoMoreQuestionException noMoreEx)
{
Debug.Assert(false, noMoreEx.Message);
break;
}
catch (Exception ex)
{
Debug.Assert(false, ex.Message);
}
worker.ReportProgress(0, null);
Debug.WriteLine(generatedCount);
generatedCount++;
Thread.Sleep(50);
}
return(section);
}
protected abstract void AppendQuestion(SectionBaseInfo info, SoonLearning.Assessment.Data.Section section);
private void CreateMCQuestion(SectionBaseInfo sectionInfo, Section section)
{
Random rand = new Random((int)DateTime.Now.Ticks);
int divValue = rand.Next(2, 9);
string questionText = string.Format("请选出是质数的数。");
MCQuestion mcQuestion = ObjectCreator.CreateMCQuestion((content) =>
{
content.Content = questionText;
content.ContentType = ContentType.Text;
return;
},
() =>
{
List <QuestionOption> optionList = new List <QuestionOption>();
int minValue = 10;
int maxValue = 100;
if (sectionInfo is SectionValueRangeInfo)
{
SectionValueRangeInfo rangeInfo = sectionInfo as SectionValueRangeInfo;
minValue = decimal.ToInt32(rangeInfo.MinValue);
maxValue = decimal.ToInt32(rangeInfo.MaxValue);
}
foreach (QuestionOption option in ObjectCreator.CreateDecimalOptions(
4, minValue, maxValue, false,
(c) =>
{
for (int j = 2; j < c / 2 + 1; j++)
{
if (c % j == 0)
{
return(false);
}
}
return(true);
}))
{
optionList.Add(option);
}
return(optionList);
}
);
section.QuestionCollection.Add(mcQuestion);
StringBuilder strBuilder = new StringBuilder();
foreach (QuestionOption option in mcQuestion.QuestionOptionCollection)
{
QuestionContent content = option.OptionContent;
decimal value = System.Convert.ToDecimal(content.Content);
int flag = 1;
int j = 1;
if (value == 0)
{
flag = 0;
}
for (j = 2; j < value / 2 + 1; j++)
{
if (value % j == 0)
{
flag = 2;
break;
}
}
if (flag == 0)
{
strBuilder.AppendLine(string.Format("0不是质数。"));
}
else if (flag == 1)
{
strBuilder.AppendLine(string.Format("{0}只有两个约数{1}，{2}，是正确答案。", value, 1, value));
}
else
{
strBuilder.AppendLine(string.Format("{0}有约数{1}，{2}，{3}...，大于2个。", value, 1, value, j));
}
}
mcQuestion.Solution.Content = strBuilder.ToString();
}
