Hello Aridon,
As long as your action isn't a static method, you can reference the collection and manually remove the items.
Example
In this simple example, I
remove the first 20 items in the list each time I fetch more.
Warning:
If you do this, make sure you don't get caught in an infinite loop. If you remove too many items, you could end up with less items than the LoadOnDemandBufferItemsCount and be stuck in a loop because the RadListView initiates another call for items when the end of the list is less than the buffer count away.
For example, let's say your buffer count is set to 20 (the default) and you remove the first 20 when you add the next 20 items from the data source. This means the the RadListView will always only have 20 items in it and infinitely keep loading more. The fix for such a case is to make sure your call for more items returns a count at least double the LoadOnDemandBufferItemsCount count.
Further support
If you have any further trouble, you can
open a Support Ticket here and attach your code. A Support Ticket carries a guaranteed response time from one of the engineers responsible for the Xamairn components.
I see that your account doesn't have a license for UI for Xamarin, I'm guessing that you're using a license that was purchased by your employer or team lead? This is not uncommon scenario and we have an `easy button` solution to resolve it.
Go
here to the Manage Licensed Users portal and have them add you as a
Licensed User using your email address. It takes less than 30 seconds to do this and will give you get access to the Support Ticket system and will cease breaking the Terms of Service agreement (we have a per-developer license policy).
Note that if they only have one license, they'll need to remove themselves as the Licensed User, but they still own the license and can change Licensed User again at any time.
Wrapping Up
If you're still having trouble and you're still waiting for you to be assigned as the Licensed User, reply back here with all the code I need to reproduce the issue and I'll investigate further.
Regards,
Lance | Tech Support Engineer, Sr.
Progress Telerik
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