Hi all,
I'm implementing a WebTab control that is nested within an UpdatePanel, so that when information underlying the data displayed in each tab is updated, a message will be displayed to the user while it is updated, and then they're reloaded.
I've disabled AutoPostBack as that seems to cause more issues than it solves. Bsaically, we want each of the tabs to persist their state if they HAVEN'T been loaded yet. So on the initial page load, we load up tab 1, then clicking tab 2 and 3 should load their contents, and clicking any of the other tabs again won't do anything.
However, after the updatepanel is updated, the selectedindexchanged event does not fire, but we need it to. How can we force the event to fire after the updatepanel has been updated?
I'm sure there's a client side function that's preventing the tabs from being reloaded again, but just not sure what that is exactly.
Just to reiterate even further, basically we want to be able to reset the tabs on the click of another button, but have the loadondemand property still in place. That is, we'd load one tab, and the rest would load when you click on them. Again though, we don't want the tabs to reload UNLESS that button has been clicked. We want them to load on demand, and then stay loaded unless we click the button, if the button is clicked, we want to load them on demand again.
Hope I'm being clear enough!
UPDATE:
It seems what I want to control is controlled in the underlying AJAXContentPane for each ContentTabItem. Basically, once the tab is loaded, I can see that the 'WasInstantiated' member changes from false to true. I'm assuming this is what determines whether or not a tab will be loaded on clicking it. Is there a way to change this? Also, if there is a way to change this, is there a way to make the tab blank while it loads? (like when a tab is loaded for the first time). So if a tab has been loaded, but the button is clicked to reload them again, on clicking each tab again, is it possible to remove the previous data so it doesn't display while the tab loads again?
Also, loading all tabs at once isn't an option, as we need to run lengthy reports for some of the tabs. We also have a webchart in one of the tabs, and therefore it needs rebinding from any proper postbacks, so that also cancels out a few other solutions
Hello Alex,
Now I'm little confused from your three subsequent explanations.
However I understood that you want to load template of selected tab only, which is accomplished using PostBackOptions EnableLoadOnDemand property of the WebTab control:
http://help.infragistics.com/doc/ASPNET/2014.2/CLR4.0/?page=Infragistics4.Web.v14.2~Infragistics.Web.UI.LayoutControls.TabPostBackOptions~EnableLoadOnDemand.html
Also please note that SelectedIndexChanged event fires every time you change the selected tab, not only the first time.
And in case that you set load on demand of the WebTab, then only the currently active tab's content will be reloaded on a button click.
If you have further questions please let me know.
Regards,
Tsanna