Virtualization Problem

[bblising]

When scrolling, the cells only display the first Item in the RowsSource
I use a BindableCollection<BindableCollection> as RowsSource.
If I set EnableRowVirtualization="False" the problem disappears, but of course the memory consumption is tremendous.

[JohanLarsson]

Thanks for reporting, do you have any ideas about how to solve this?
I wrote this lib mostly for small matrices.

[bblising]

I don't really know how virtualization works. My guess is the bindings are not being applied properly because the datagrid assumes that only one DataContext is applied for each row hence every column have the same values as the first row. Maybe the DataGrid.UnloadingRow and LoadringRow event can be used to update the columns. I haven't exactly studied how you implemented the RowsSource yet so it's all theory.

I'm using this for a time based distribution of values. Surprisingly, it works well even for larger datasets (300cols x 30rows). But with virtualization disabled, it consumes around 450mb of memory. For now I'm culling the columns in my viewmodel to only contain a fixed number of columns.
.

[JohanLarsson]

Can be solved now, interested in feedback.

[JohanLarsson]

@barnstws have you had time to check if it got better/worse? There is a nuget package now