GridNavigator.SelectLastRow is very slow

[Henri]

Hi,

I'm using the GridView from version 2014 Q1 SP1.

I filled the Grid in Unbound Mode (autogeneratecolumns=false), and added a child hierarchy using Load-On-Demand (ResourceNeeded event).
The Top Level (MasterTemplate) is fully loaded into the Grid in no time, about 8000 records.

Scrolling down using the Scrollbar is fast, and selecting the bottom record is fast as well.

But selecting the last record using GridNavigator.SelectLastRow is very slow (about 10 seconds). 
SelectFirstRow afterwards is immediate, SelectLastRow again is still slow at about 10 seconds.

Using DeferRefresh does not change a thing.

How can I speed this (SelectLastRow) up?

[Henri]

Calling 

grid.TableElement.RowScroller.Scrollbar.PerformLast();

before calling

grid.GridNavigator.SelectLastRow();

seems to solve my problem

[Dess | Tech Support Engineer, Principal]

Hello Henri,

Thank you for writing.

I confirm that this is a performance issue with our RadGridView and its load on demand functionality. I have logged it in our Feedback Portal. You can track its progress, subscribe for status changes and add your vote/comment to it on the following link - Feedback Item. 

I have also updated your Telerik points.

Currently, as you already found out, the suitable workaround is to position the scroll bar to the bottom first and then select the last row.

Should you have further questions, I would be glad to help.

Regards,
Desislava
Telerik