private void miCustomSize_Click(object sender, RoutedEventArgs e) {
var dat = new SizeSearchCriteriaDialog();
string sd = Utilities.GetValueOnly("size", edtSearchBox.SizeCondition);
dat.curval.Text = sd;
dat.ShowDialog();
if (dat.Confirm) {
edtSearchBox.SizeCondition = "size:" + dat.GetSizeQuery();
scSize.IsChecked = dat.GetSizeQuery().Any();
} else {
scSize.IsChecked = dat.GetSizeQuery().Length > 5;
}
}