public bool DeleteExpectation(LessonExpectation expectation)
{
try
{
CurLesson.LessonExpectations.Remove(expectation);
try
{
Helper.Session.DbContext.Delete(expectation);
}
catch
{
// This error is generally caused by a user deleting an item
// before it has been saved to the database.
// Because of this, we can ignore this error
}
return true;
}
catch
{
//An error occured while deleted the document record
return false;
}
}
/// <summary>
/// Create a lesson expectation for the given lesson and expectation if one doesn't already exist in the current lesson
/// </summary>
/// <param name="exp"></param>
/// <returns></returns>
public LessonExpectation AddLessonExpectation(Expectation exp)
{
LessonExpectation lsnExpectation = new LessonExpectation();
try
{
//Make sure the expectation hasn't already been added to the lesson
if (CurLesson.LessonExpectations != null)
{
foreach (LessonExpectation lsnExp in CurLesson.LessonExpectations)
{
if (lsnExp.SENumber == exp.Senumber)
return null;
}
}
lsnExpectation.Expectation = exp;
lsnExpectation.Lesson = CurLesson;
lsnExpectation.LessonDOK = 0;
lsnExpectation.LessonID = CurLesson.ID;
lsnExpectation.SENumber = exp.Senumber;
lsnExpectation.UnitDOK = 0;
return lsnExpectation;
}
catch
{
//An error occured
return null;
}
finally
{
lsnExpectation = null;
}
}