OK, I have this scenario. I have a set of custom WDDs in an ASCX control and what I want to accomplish is to asynchronously update any of them every time I make a selection in any of them. Global variables representing the selected value of each WDD are updated in a datalayer class and are used to filter the queries that populates the WDDs. So, in theory I would just need for a WDD to clear its items, reattach the datasource and call for a databind. However, I do not know how to do this from the client side. According to this article:(http://help.infragistics.com/NetAdvantage/ASPNET/Current/CLR4.0/?target=Web_WebDropDown.html) I should call loaditems from client side. But, it is very slow and even if the datatable gets updated with the new results it is not reflected client side. I am thinking in just placing a traditional updatepanel and put all the WDDs inside. Any other idea?
Thanks!
Hi jwquiroz,
It has been some time since your post but in case that you still need assistance I will be happy to help.
I suggest that you enable the WebDropDown’s load on demand feature if you are handling large amount of data. You can read about using load on demand here - http://help.infragistics.com/Help/NetAdvantage/ASPNET/2010.1/CLR3.5/html/WebDropDown_Using_load_on_demand_in_WebDropDown.html
I’m attaching a sample replicating the described scenario.
Regarding the issue with datasource updates not being reflected on the displayed values I would need a sample illustrating the behavior in order to continue my investigation.
If you need any further assistance on the matter please do not hesitate to ask.