Anyone know of a control for asp.net that can achieve this either server or ajax.
I have a hierarchy of school, division and programme area. Unfortunately this hierarchy has complexities such that a programme area can appear in more than one school.
As it is for reporting I would like to give the end user options across each dropdown of the hierarchy for ANY/ALL. So if a school was selected you could still select any division within that school and an ANY/ALL option and then then programme area list would be filtered based on school the school selected and ANY/ALL divisions.
I hope that makes sense, any questions I will make edits.
EDIT: I solved this I realized, I had missed the obvious, I had put in my original solution of 3 separate drop downs separate sql queries requiring the inputs of the above dropdowns in the hierarchy. I realised if I had my any as the wildcard % (sqlserver one or more characters) and changed the equals to like I would achieve the desired effect.
It does post back but it’s not really an issue it’s a very quick set of sql queries.
The ASP.NET AJAX Control Toolkit has a cascading drop down list that uses a web service interface to determine what data will populate the next drop down list of data. I could easily see you leveraging this control so that your web service either returns a specialized subset if a specific item is selected or returns the full set of options if the ANY/ALL item is selected.
Is this along the lines of what you seek?