private void edtSearchBox_FiltersCleared(object sender, EventArgs e) {
scSize.IsChecked = false;
ExtToggle.IsChecked = false;
AuthorToggle.IsChecked = false;
SubjectToggle.IsChecked = false;
dcsplit.IsChecked = false;
dmsplit.IsChecked = false;
foreach (var item in scSize.Items.OfType<MenuItem>().Union(dcsplit.Items.OfType<MenuItem>()).Union(dmsplit.Items.OfType<MenuItem>())) {
item.IsChecked = false;
}
}