ToNameValueCollection() throws when a column is provided but a search is not.

[VictorioBerra]

If you use the DataTablesAjaxPostModel the ToNameValueCollection forces you to provide a search object, even if you just want to order and not search.

[VictorioBerra]

The fix should be to add some null checks.

model[$"columns[{i}][search][value]"] = Columns[i].Search?.Value;
model[$"columns[{i}][search][regex]"] = Columns[i].Search?.Regex.ToString();

[AlexanderKrutov]

Thank you! The fix is included in 1.7.2.