private void FillSubjectComboByGradeID(long gradeID)
{
SubjectsRepository subjectsRepository = new SubjectsRepository();
List <SubjectModel> subjectModels = new List <SubjectModel>();
DataTable dataTable = new DataTable();
try
{
dataTable = subjectsRepository.GetAllSubjectsByGradeID(gradeID);
subjectModels = TranslateDataTableToSubjectsModel(dataTable);
}
catch (Exception ex)
{
MessageBox.Show("Network error...Please try again!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
dataTable.Clear();
dataTable = null;
}
this.cmbSubjects.SelectedIndexChanged -= new EventHandler(cmbSubjects_SelectedIndexChanged);
BindingSource bs = new BindingSource();
bs.DataSource = subjectModels;
cmbSubjects.ValueMember = "SubjectID";
cmbSubjects.DisplayMember = "SubjectName";
cmbSubjects.DataSource = bs;
cmbSubjects.SelectedIndex = -1;
this.cmbSubjects.SelectedIndexChanged += new EventHandler(cmbSubjects_SelectedIndexChanged);
}
