} // R
public void AddClass()
{
// Grade
{
if (GradeComboBox.SelectedItem != null)
{
string SelectedGrade = GradeComboBox.SelectedItem.ToString();
teacherController.SetCurrentClassGrade(SelectedGrade);
}
else
{
MessageBox.Show("No grade selected!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
// Letter
{
if (Letter.Length <= 2 && Letter.Length >= 1)
{
if (Letter.Length == 1 && Letter[0] >= 'A' && Letter[0] <= 'Z')
{
teacherController.SetCurrentClassLetter(Letter);
if (teacherController.CheckIfClassAlreadyExists())
{
MessageBox.Show("Class already exists!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
else
{
if (Letter.Length == 2 && Letter[0] >= 'A' && Letter[0] <= 'Z' && Letter[1] >= 'A' && Letter[1] <= 'Z')
{
teacherController.SetCurrentClassLetter(Letter);
if (teacherController.CheckIfClassAlreadyExists())
{
MessageBox.Show("Class already exists!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
else
{
MessageBox.Show("Invalid Letter Format!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
}
else
{
MessageBox.Show("Invalid Format!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
// HeadTeacher
{
if (NonHeadTeacherComboBox.SelectedItem != null)
{
string testString = NonHeadTeacherComboBox.SelectedItem.ToString();
teacherController.SetCurrentClassTeacherId(testString);
}
else
{
MessageBox.Show("No head teacher selected!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
teacherController.CommitChangedCurrentClassed();
MessageBox.Show("Success!", "Operation Completed", MessageBoxButtons.OK);
// Load default values for gradeComboBox, letterTextBox and nonHeadTeacherComboBox
{
GradeComboBox.SelectedItem = null;
Letter = "AA";
NonHeadTeacherComboBox.Items.Clear();
List <string> nonHeadTeachers = teacherController.NonHeadTeachers();
nonHeadTeachers.ForEach(w => nonHeadTeacherComboBox.Items.Add(w));
NonHeadTeacherComboBox.Text = String.Empty;
}
} // R