// =======================================================
// Methods
// =======================================================
/// <summary>
/// Create a new unit
/// </summary>
/// <param name="crs">The course to place the unit into</param>
/// <returns></returns>
public bool CreateNewUnit(Course crs)
{
try
{
Unit newUnit = new Unit();
newUnit.ID = Guid.NewGuid();
newUnit.CourseID = crs.ID;
newUnit.Course = crs;
newUnit.UnitName = "New Unit";
newUnit.UnitNumber = (crs.Units.Count + 1);
crs.Units.Add(newUnit);
return true;
}
catch
{
//An error occured
return false;
}
}
/// <summary>
/// Move a lesson into a unit
/// </summary>
/// <param name="lsn">The lesson to move</param>
/// <param name="newUnt">The unit that the lesson is going into</param>
/// <returns></returns>
public bool MoveLesson(Lesson lsn, Unit newUnt)
{
try
{
lsn.UnitID = newUnt.ID;
lsn.Unit = newUnt;
//Remove the lesson from its current unit
lsn.Unit.Lessons.Remove(lsn);
//Move the lesson into its new unit
newUnt.Lessons.Add(lsn);
return true;
}
catch
{
//something went wrong
return false;
}
}
/// <summary>
/// Create a new lesson in the specified unit
/// </summary>
/// <param name="unt">The unit to create the lesson in</4param>
/// <returns></returns>
public bool CreateNewLesson(Unit unt)
{
try
{
Lesson newLesson = new Lesson();
newLesson.ID = Guid.NewGuid();
newLesson.UnitID = unt.ID;
newLesson.Unit = unt;
newLesson.LessonName = "New Lesson";
newLesson.LessonNum = (unt.Lessons.Count + 1);
unt.Lessons.Add(newLesson);
return true;
}
catch
{
return false;
}
}
/// <summary>
/// Delete the specified lesson
/// </summary>
/// <param name="unt">The unit to be deleted</param>
/// <returns></returns>
public bool DeleteUnit(Unit unt)
{
try
{
//Remove the unit from the course's units list
unt.Course.Units.Remove(unt);
//Mark the unit for deletion
return untContext.DeleteUnit(unt);
}
catch
{
return false;
}
}
/// <summary>
/// Move a unit into a course
/// </summary>
/// <param name="unt">The unit to move</param>
/// <param name="newCrs">The course that the unit is going into</param>
/// <returns></returns>
public bool MoveUnit(Unit unt, Course newCrs)
{
try
{
unt.CourseID = newCrs.ID;
unt.Course = newCrs;
//Remove the unit from its current course
unt.Course.Units.Remove(unt);
//Move the unit into its new course
newCrs.Units.Add(unt);
return true;
}
catch
{
//something went wrong
return false;
}
}