/// <summary>
/// 删除问题选项
/// </summary>
/// <param name="questionOptionGuid"></param>
public void RemoveQuestionOption(Guid questionOptionGuid)
{
if (QuestionOptions == null)
{
throw new Exception($"问题选项{questionOptionGuid}不存在！");
}
var qOption = QuestionOptions.FirstOrDefault(p => p.QuestionOptionGuid.Equals(questionOptionGuid));
if (qOption == null)
{
throw new Exception($"问题选项{questionOptionGuid}不存在！");
}
QuestionOptions.Remove(qOption);
if (qOption.QuestionOptionGuid.Equals(CorrectOptionId))
{
CorrectOptionId = default(Guid);
CorrectOption = null;
}
}
public void DeleteQuestionOption(QuestionOptionViewModel questionOptionViewModel)
{
QuestionOptions.Remove(questionOptionViewModel);
questionOptionViewModel.Delete();
RaisePropertyChanged("QuestionOptions");
}