protected void btnCreateSemesterSubject_Click(object sender, EventArgs e)
{
if (string.IsNullOrWhiteSpace(ddlSemester.SelectedValue) || string.IsNullOrWhiteSpace(ddlProgramSubject.SelectedValue) || string.IsNullOrWhiteSpace(ddlLecturer.SelectedValue))
{
lblSemesterSubject_Status.Text = "has empty";
}
else
{
Semester.AssociateSemesterSubject(Convert.ToInt32(ddlSemester.SelectedValue), Convert.ToInt32(ddlProgramSubject.SelectedValue), Convert.ToInt32(ddlLecturer.SelectedValue));
lblSemesterSubject_Status.Text = "Semester subject association has been created successfully.";
}
}
