private async Task SaveSubjectAsync()
{
var chosenSemester = Semesters[semesterPicker.SelectedIndex];
var code = subjectCodeTextBox.Text;
var facultyCode = facultyPicker.Text.Split('-')[0];
await SqlCommands.AddSubjectAsync(code, subjectNameTextBox.Text, facultyCode, chosenSemester.SemesterId);
}
