Hi I am using the DataGrid with UI virtualization enabled.
In XAML the main attributes set on the Grid are:
EnableRowVirtualization="True"
ScrollMode="Deferred"
SelectionMode="Extended"
The grid binds to a VirtualQueryableCollection that makes uses of the ItemsLoading event to load data into the VirtualQueryableCollectionView.
So a queryable is not passed in as a constructor.
The Grid is working fine except for when I want to call Grid.SelectedItems.Clear().
I am manually populating the Grid.SelectedItems with the correct rows that should be selected.
The Grid has 240,000 rows. I select a few rows at the top to the grid.
Then I scroll down the bottom of the grid.
At the bottom I add another row to the selection, so Grid.SelectedItems has 3 items in it. Everything is fine.
A call is made to Grid.SelectedItems.Clear().
The process freezes and eventually a Stackoverflow exception is thrown.
The stacktrace does not show much. Throughout the trace a call to VirtualQueryableCollection.Load() is occurring for the whole list in increments of the LoadSize (100).
This is with version:
2013.1.022.0.40
If I try version
2012.3.1129.40
The process does not have a Stackoverflow exception but is stuck in a loop and does not return.
If I select items at the top of the grid only, it works fine. And if I select items at the bottom of the grid it works fine.
The machine I work on is not connected to the internet but I may be able to provide the stacktrace if needed.
In XAML the main attributes set on the Grid are:
EnableRowVirtualization="True"
ScrollMode="Deferred"
SelectionMode="Extended"
The grid binds to a VirtualQueryableCollection that makes uses of the ItemsLoading event to load data into the VirtualQueryableCollectionView.
So a queryable is not passed in as a constructor.
The Grid is working fine except for when I want to call Grid.SelectedItems.Clear().
I am manually populating the Grid.SelectedItems with the correct rows that should be selected.
The Grid has 240,000 rows. I select a few rows at the top to the grid.
Then I scroll down the bottom of the grid.
At the bottom I add another row to the selection, so Grid.SelectedItems has 3 items in it. Everything is fine.
A call is made to Grid.SelectedItems.Clear().
The process freezes and eventually a Stackoverflow exception is thrown.
The stacktrace does not show much. Throughout the trace a call to VirtualQueryableCollection.Load() is occurring for the whole list in increments of the LoadSize (100).
This is with version:
2013.1.022.0.40
If I try version
2012.3.1129.40
The process does not have a Stackoverflow exception but is stuck in a loop and does not return.
If I select items at the top of the grid only, it works fine. And if I select items at the bottom of the grid it works fine.
The machine I work on is not connected to the internet but I may be able to provide the stacktrace if needed.
2 Answers, 1 is accepted
0
Joshua
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Rank 1
answered on 07 May 2013, 08:15 PM
Using remove on SelectedItems instead of clear seems to solve / prevent the issue.
0
Hello Joshua,
Thank you for the feedback.
I've tried to reproduce the problem you report but to no avail. Could you check the attached test project? Is there something specific that I've missed?
Greetings,
Yordanka
the Telerik team
Thank you for the feedback.
I've tried to reproduce the problem you report but to no avail. Could you check the attached test project? Is there something specific that I've missed?
Greetings,
Yordanka
the Telerik team
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