private void AuthorToggle_Click(object sender, RoutedEventArgs e) {
var dat = new StringSearchCriteriaDialog("author", edtSearchBox.AuthorCondition, FindResource("btnAuthorCP") as string);
dat.ShowDialog();
if (dat.Confirm) {
edtSearchBox.AuthorCondition = "author:" + dat.textBox1.Text;
AuthorToggle.IsChecked = dat.textBox1.Text.Any();
} else {
AuthorToggle.IsChecked = Utilities.GetValueOnly("author", edtSearchBox.AuthorCondition).Any();
}
}