public void DeleteSemester(SemesterEdit toEdit)
{
Semester s = this.repository.GetSemester(toEdit.SemesterName, toEdit.SemesterNo, toEdit.SemesterYear);
if (s != null && s.SubjectsDatas.Count > 0)
throw new UpdateException("Nie można usunąć semestru,\nponieważ posiada powiązania");
else
{
this.repository.DeleteSpecialization(s);
}
}
public SemesterEdit GetSemesterEdit(string semesterName, int semesterNo, int semesterYear)
{
Semester s = this.repository.GetSemester(semesterName, semesterNo, semesterYear);
if (s != null)
{
SemesterEdit se = new SemesterEdit()
{
SemesterID = s.SemesterID,
SemesterName = s.Name,
SemesterNo = s.Semester1,
SemesterYear = s.StudyYear
};
return se;
}
return null;
}
public bool EditSemester(SemesterEdit toEdit)
{
if (toEdit != null)
{
Semester s = this.repository.GetSemester(toEdit.SemesterName, toEdit.SemesterNo, toEdit.SemesterYear);
if (s != null && s.SemesterID != toEdit.SemesterID && s.Name.ToLower().Equals(toEdit.SemesterName.ToLower()) &&
s.Semester1 == toEdit.SemesterNo && s.StudyYear == toEdit.SemesterYear)
toEdit.AddError("Semestr o takich danych\njuż istnieje");
if (toEdit.IsValid)
{
s = this.repository.GetSemester(toEdit.SemesterID);
s.Name = toEdit.SemesterName;
s.Semester1 = toEdit.SemesterNo;
s.StudyYear = toEdit.SemesterYear;
this.repository.EditSemester(s);
return true;
}
}
return false;
}
private void dgSemesters_CellDoubleClick(object sender, Telerik.WinControls.UI.GridViewCellEventArgs e)
{
lblValidation.Text = string.Empty;
if (e.Row.Index >= 0)
{
int no = 0;
int year = 0;
int.TryParse(dgSemesters.Rows[e.Row.Index].Cells["cNo"].Value.ToString(), out no);
int.TryParse(dgSemesters.Rows[e.Row.Index].Cells["cYear"].Value.ToString(), out year);
SemesterEdit semester = SemesterController.Instance.GetSemesterEdit(
dgSemesters.Rows[e.Row.Index].Cells["cName"].Value.ToString(),
no, year);
if (semester != null)
{
toEdit = semester;
Enable();
tbNewSemesterName.Text = semester.SemesterName;
tbNewSemestrNo.Text = semester.SemesterNo.ToString();
tbNewSemesterYear.Text = semester.SemesterYear.ToString();
}
else
{
lblValidation.Text = "Semestr nie istnieje";
toEdit = null;
}
}
}
private void btnDelete_Click(object sender, EventArgs e)
{
lblValidation.Text = string.Empty;
if (toEdit != null)
{
try
{
SemesterController.Instance.DeleteSemester(toEdit);
FillWithSemesters();
toEdit = null;
Disable();
Clear();
changes = true;
}
catch (UpdateException ex)
{
lblValidation.Text = ex.Message;
}
}
}
private void btnCancel_Click(object sender, EventArgs e)
{
if (toEdit != null)
{
toEdit = null;
Disable();
Clear();
}
}