Description
Hi
CollectionView of WinUI started to flicker while scrolling with version 8.0.6. It was flickering at version 7 (had another problems also), fixed at 8.0.3 (again had another problems like drawing all rows at itemsource is set) waited for two months for fixes, now started to flicker again at 8.0.6
This is a simple implementation of 1 Checkbox and 5 Labels in a Grid as DataTemplate. Yes it is a recycling work but is that really that hard to smoothly draw them? Or is CV designed to add 1 or 2 labels only? Or am i missing something at layout? (width/height constraints, some layoutoptions or whatever)
Tried listview also, it is almost the same.
There is no problem for Android, IOS and MacCatalyst
(below gif is captured in release mode. windows 11, 32g of ram, i7 12th gen cpu)
Steps to Reproduce
No response
Link to public reproduction project repository
https://github.com/enkaradag/collectionview_flicker_test
public class ROW
{
public string FIELD1 { get; set; }
public string FIELD2 { get; set; }
public string FIELD3 { get; set; }
public string FIELD4 { get; set; }
public string FIELD5 { get; set; }
}
public ObservableCollection<ROW> ROWS = new ObservableCollection<ROW>();
private void btn_fill_Clicked(object sender, EventArgs e)
{
for (int i = 0; i < 1000; i++)
ROWS.Add(new ROW()
{
FIELD1 = Guid.NewGuid().ToString(),
FIELD2 = Guid.NewGuid().ToString(),
FIELD3 = Guid.NewGuid().ToString(),
FIELD4 = Guid.NewGuid().ToString(),
FIELD5 = Guid.NewGuid().ToString(),
});
view.ItemTemplate = new DataTemplate(() =>
{
Grid g = new Grid();
g.RowDefinitions.Add(new RowDefinition(new GridLength(50)));
g.ColumnDefinitions.Add(new ColumnDefinition(new GridLength(50))); //for checkbox
g.ColumnDefinitions.Add(new ColumnDefinition(new GridLength(50)));
g.ColumnDefinitions.Add(new ColumnDefinition(new GridLength(100)));
g.ColumnDefinitions.Add(new ColumnDefinition(new GridLength(200)));
g.ColumnDefinitions.Add(new ColumnDefinition(new GridLength(300)));
g.ColumnDefinitions.Add(new ColumnDefinition(new GridLength(100)));
g.Add(new CheckBox(), 0, 0);
Label labelFIELD1 = new Label();
Label labelFIELD2 = new Label();
Label labelFIELD3 = new Label();
Label labelFIELD4 = new Label();
Label labelFIELD5 = new Label();
labelFIELD1.SetBinding(Label.TextProperty, "FIELD1");
labelFIELD2.SetBinding(Label.TextProperty, "FIELD2");
labelFIELD3.SetBinding(Label.TextProperty, "FIELD3");
labelFIELD4.SetBinding(Label.TextProperty, "FIELD4");
labelFIELD5.SetBinding(Label.TextProperty, "FIELD5");
g.Add(labelFIELD1, 1, 0);
g.Add(labelFIELD2, 2, 0);
g.Add(labelFIELD3, 3, 0);
g.Add(labelFIELD4, 4, 0);
g.Add(labelFIELD5, 5, 0);
return g;
});
view.ItemsSource = ROWS;
}
Version with bug
8.0.6
Is this a regression from previous behavior?
Yes, this used to work in .NET MAUI
Last version that worked well
Unknown/Other
Affected platforms
Windows
Affected platform versions
No response
Did you find any workaround?
No
Relevant log output
No response
Description
Hi
CollectionView of WinUI started to flicker while scrolling with version 8.0.6. It was flickering at version 7 (had another problems also), fixed at 8.0.3 (again had another problems like drawing all rows at itemsource is set) waited for two months for fixes, now started to flicker again at 8.0.6
This is a simple implementation of 1 Checkbox and 5 Labels in a Grid as DataTemplate. Yes it is a recycling work but is that really that hard to smoothly draw them? Or is CV designed to add 1 or 2 labels only? Or am i missing something at layout? (width/height constraints, some layoutoptions or whatever)
Tried listview also, it is almost the same.
There is no problem for Android, IOS and MacCatalyst
(below gif is captured in release mode. windows 11, 32g of ram, i7 12th gen cpu)
Steps to Reproduce
No response
Link to public reproduction project repository
https://github.com/enkaradag/collectionview_flicker_test
Version with bug
8.0.6
Is this a regression from previous behavior?
Yes, this used to work in .NET MAUI
Last version that worked well
Unknown/Other
Affected platforms
Windows
Affected platform versions
No response
Did you find any workaround?
No
Relevant log output
No response