Basically, I've created a custom list view item, there is no issues by default, but when I add an element to the item's element, when you scroll the item out of bounds it will add the element that was in the intended element into another element and remove it from the original element it was added to. How can I fix this from happening?
EDIT: This happens when item height is NOT arbitrary too.
EDIT 2: I have messed around, now I am no longer adding any elements (as a test), all I am doing is changing the background color of the element, when the item goes out of bounds another item in another expanded group will be the same background color and the original item will lose the background color. There is no way for me to fix this from what I can tell.
1 Answer, 1 is accepted
According to the provided information, it seems that you are using a custom visual item in RadListView. However, it is not clear what is the exact implementation that you have. Could you please elaborate?
Please have in mind that the visual item elements are created only for the currently visible items and they are being reused during operations like scrolling. Hence, in order to avoid applying the custom style to other visual elements, all of the applied settings should be reset for the rest of the items. The following help article demonstrates how to customize the items and resets the visual settings:
https://docs.telerik.com/devtools/winforms/controls/listview/customizing-appearance/formatting-items
As to the custom element that goes to other undesired items, you can show or hide the custom element only for specific items. This should be done in the SynchronizeProperties of the SimpleListViewVisualItem/IconListViewVisualItem for ListView/IconsView and the Synchronize method of the DetailListViewDataCellElement for DetailsView. The following article demonstrates sample approaches how to create custom items and synchronize the displayed data in the respective items:
https://docs.telerik.com/devtools/winforms/controls/listview/custom-items
In case you are still experiencing any further difficulties, it would be greatly appreciated if you can provide a full code snippet for replicating the undesired behavior. Thus, we would be able to make an adequate analysis of the precise case and provide further assistance. Thank you.
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Regards,
Dess | Tech Support Engineer, Principal
Progress Telerik
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Could you please share with us the complete implementation of the custom SimpleListViewVisualItem and how the RadListView control is populated with data? Thus, we would be able to setup a sample project and investigate the precise case on our end.
It would be greatly appreciated if you can share some screenshots of the obtained and expected result. Thank you in advance for your cooperation.
I am looking forward to your reply.
Rank 1
Hi, Jake,
I would like to pay attention once again to the fact that the visual item elements are created only for the currently visible items and they are being reused during operations like scrolling. That is why the custom elements should be synchronized according to the data item that is currently associated with this visual item.
However, without replicating the issue locally, it would not be easy to determine what exactly causes this behavior. We can make only conjectures. That is why I would kindly ask you to provide a complete code snippet of the SimpleListViewVisualItem that you have and how the RadListView is populated with data. Thus, we would be able to make a sample project on our end, investigate the precise case and provide further assistance.
Thank you in advance for your understanding and cooperation. I am looking forward to the code sample.