99 questions
1
vote
1
answer
158
views
FluentDataGrid with Virtualize="true" not rendering data even though ItemsProvider is returning results
I'm using Microsoft.FluentUI.AspNetCore.Components.DataGrid in a Blazor Server project. I want to use infinite scrolling with ItemsProvider and Virtualize="true".
I'm using ItemsProvider ...
0
votes
0
answers
73
views
FlashList React Native rendering mismatch
Im using flashlist from shopify to contain simple card components with a vertical scroll, the cards have an image and a title shown inmediately. I am having an issue where when I get to around 10 ...
0
votes
0
answers
56
views
How to virtualize M×N Kanban board with cell-level API calls and dynamic heights?
I'm implementing a complex Kanban board with virtualization and facing several challenges. The board has M rows (sections) and N columns (statuses), where each cell makes its own API call to fetch ...
0
votes
0
answers
41
views
C# WPF Virtualization across multiple ItemsControls that share a single scrollbar
I'm trying to virtualize a screen that contains multiple ItemsControls which share 1 scrollbar.
I can virtualize each ItemsControl independently but thats pretty ugly.
The height of each item be the ...
0
votes
1
answer
105
views
How to virtualize a responsive Bootstrap grid?
A Bootstrap grid can wrap its columns into rows when the viewport width is smaller than a configured breakpoint. This changes the row height and interferes with Razor virtualization which wants to ...
1
vote
1
answer
2k
views
The dragged item is not displayed outside the virtualized list (react-virtuoso, @dnd-kit)
I am trying to use dnd-kit together with react-virtuoso and everything works, except that the dragged item is not displayed outside the virtualized list
How to make the dragged item appear outside the ...
0
votes
2
answers
338
views
It it possible to control a fluid animation in Lit Virtualizer
I am implementing a Infinte Scroll Carousel with Lit.
I want to control the carousel with key events.
On long key press (or throttled) I want the animation te be fluid and stop at a specific place.
Is ...
1
vote
0
answers
75
views
How to implement real-time interaction with a virtual Android device and transfer sound and image?
I am developing an Android app in Kotlin that provides access to a virtual Android device hosted on a server. The virtual device is running Android OS, and the user interacts with it through their own ...
1
vote
0
answers
133
views
React-Virftual v2 | Virtualizer `virtualItems` only contains 11 elements although `totalSize` is 20k+
Basically, I'm implementing a virtualized Material UI v4 Autocomplete, to do so I have this component:
const ListboxComponent = React.forwardRef<HTMLUListElement>(({ children, ...rest }, ref) =&...
1
vote
1
answer
1k
views
Blazor Virtualize won't load more items
I have a WASM Blazor app with a simple Virtualize items that use ItemsProvider to get the items:
<Virtualize Context="bobina" ItemSize="500" ItemsProvider="@...
0
votes
0
answers
22
views
WPF: TreeView, Virtualization, Select and BringIntoView issue [duplicate]
I have a TreeView that must be virtualized for performance reasons. The problem is that if I change the bound IsSelected property the TreeViewItem.Selected event is not called until it is visible (...
0
votes
0
answers
99
views
Override VirtualizationMode default value on TreeViewItems
I want the default value of VirtualizingPanel.VirtualizationMode to Recycling, mainly on TreeViewItems. It may be something simple I'm missing but I've tried all these:
<TreeView VirtualizingPanel....
1
vote
1
answer
513
views
WPF - Virtualization does not work for items with collapsed visibility
I have performance problem with my listview.
There is a WPF ListView with groupping and virtualisation.
<ListView Name="ListOfEvents"
SelectionMode="Extended"
...
1
vote
0
answers
2k
views
React Virtuoso: Making a list of custom items
I am trying to make a custom component that utilizes React Virtuoso to make a list that renders chat bubbles. I think I am missing some understanding, particularly how the prop itemContent works.
...
3
votes
2
answers
3k
views
In Blazor when using the Virtualize component with multiple items per row, is there a way to have items stay horizontally consistent when scrolled?
I tried to <Virtualize> a list of a thousand items showing several per row, with display: inline-block. The result in Blazor kinda works, but as the user scrolls, it seems to remove items from ...
1
vote
2
answers
1k
views
Animate entry of (only new) elements in a virtualized list
I am using react-window FixedSizedList and react-virtualized-auto-sizer Autosizer components to build a list/table UI element that may contain thousands of items that also receives new items via a ...
1
vote
1
answer
931
views
JavaFX, custom made VirtualFlow performance improvements tips
I'm trying to implement my own VirtualFlow but I'm having some performance issues and I don't understand where the bottleneck could be and what I could do to improve it.
Here's a showcase with two ...
8
votes
1
answer
4k
views
Blazor Virtualize component and broken scrolling when dragging scrollbar
I have a custom datagrid with row vitrualization.
When I scroll down by dragging the scrollbar, the scrolling is interrupted as before new "page" is rendered.
Do you have any idea, why this ...
3
votes
1
answer
2k
views
How to I access item index in ItemContent in Virtualize component in Blazor
How do I access index?
<Virtualize ItemsProvider="@ProvideItems">
<ItemContent>
<div>
Item: @context
Index: @???
</div>
<...
1
vote
1
answer
524
views
How to implement grouping (expandable groups) with Virtualize component in Blazor?
I have this basic virtualized list where I load items using ItemsProvider:
<Virtualize @ref="_listbox" ItemsProvider="ProvideItems">
<ItemContent>
<div @...
0
votes
1
answer
502
views
How to get element references of Virtualize component's children?
I use Virtualize component like this:
<Virtualize Items="Items" Context="row">
<Row Data="row" @key="row" />
</Virtualize>
How do I get ...
0
votes
1
answer
433
views
WPF ListView virtualization in a ScrollViewer
I have a requirement which is to display a user information at top of the page and a ListView of images will follow it, and I've wrote following code (it's a pseudocode but I think it's enough to ...
2
votes
2
answers
3k
views
Is there a way to virtualize (e.g. with react-window) antd nested tables?
antd has an example in their docs for integrating virtual scroll via react-window to improve performance for large table data
Anyone done something like that for nested tables in antd? Or have any ...
7
votes
2
answers
17k
views
How can I use Material-UI Autocomplete together with react-virtualized?
I'm using the Autocomplete component from Material-UI in a project. Since I have a lot of options to render, virtualization would be very beneficial. So I started from the virtualized example in the ...
1
vote
2
answers
1k
views
Cannot change the VirtualizationMode attached property on an ItemsControl after Measure is called on the ItemsHost panel
When i try to set VirtualizationMode on my ListView to Recycling I get the error from the title:
Cannot change the VirtualizationMode attached property on an
ItemsControl after Measure is called ...
1
vote
2
answers
157
views
Virtualization of DataGrid inside ListBox
My layout:
Virtualization of outer ListBox works but for inner DataGrid does not. Probably because the outer ListBoxcontains ScrollViewer inside:
The ScrollViewer provides a window onto its ...
6
votes
2
answers
1k
views
How to prevent WPF's ContentControl from reusing DataTemplates?
I stumbled upon the famous TabControl virtuality problem. I thought of replacing the TabControl with styled list (to present tabs) and ContentControl (to present content of a tab). However, it seems ...
0
votes
1
answer
1k
views
ItemsControl Not Virtualizing
I cannot get this ItemsControl to virtualize properly. Debugging shows that the collection is initialized quickly, but all the items are being added to the control instead of a subset (I simply put a ...
0
votes
1
answer
354
views
How to get seldom happening WPF exception to be reproduced more often?
At this point there will be no minimal reproducible example because I can reproduce this once a day at best and only with a product mainwindow which has thousands of xaml lines in multiple controls.
...
1
vote
1
answer
1k
views
C# wpf searching text and find next functionality in virtualizing stackpanel with scrollview
I have some small app which reads a very large file. In order to display this file (can have about milion rows) im using virtualizedStackpanel and scrollview to virtualize UI.
In this file i ...
4
votes
1
answer
784
views
How to avoid freezing in VirtualizingStackPanel.MeasureOverride in grouping virtualized ListView?
When ListView is grouped and
ScrollViewer.CanContentScroll="True"
ScrollViewer.VerticalScrollBarVisibility="Visible"
...
2
votes
1
answer
829
views
Virtual scrolling option for combobox
I need to display the visible items into view instead of displays all the rows in combo box control.
While scrolling that, we need to load next visible items.
How can I do that? Also, how can I ...
1
vote
1
answer
58
views
Templates are not applied while scrolling
I am using the grid with scroll viewer. I have designed that grid with more no of UI elements.while open that report I rendered only first-page UI elements due to the performance problem.While ...
4
votes
0
answers
789
views
Can setting MinHeight of a WPF control be a workaround for failing VirtualizingStackPanel.ExtendViewport?
And if it is, what control would be the best bet? DataGrid that has the virtualization or something else? This happens very very rarely so trial and error is not an option. Portion of my xaml and ...
0
votes
1
answer
957
views
Disabling UI virtualization on Xamarin Forms with UWP windows mobile 10
I am working on an issue with UWP application with Xamarin.Forms. I have noticed that list view items by default are getting recycled and reused in UWP. For an instance when I update the first item in ...
4
votes
1
answer
287
views
WPF Virtualized TreeView with different orientations within doesn't virtualize?
I have a TreeView in XAML with multiple layers. Using this solution I can get a XAML-configured look for each of the different layers, and confirmed that it is UI virtualizing.
However, when I switch ...
2
votes
1
answer
190
views
UI Virtualization inside Popup
I am unable to get Virtualization to work on a TreeView inside a Popup while the same TreeView works perfectly outside of Popup.
<Grid>
<Grid.RowDefinitions>
<...
0
votes
1
answer
751
views
virtualization for custom treeview
I made a custom TreeView with multiple columns. Everything worked well until thee are lots of items in the tree.
I tried to enable Virtualization by doing VirtualizingPanel.IsVirtualizing="True" (...
2
votes
0
answers
485
views
Aurelia ui-virtualization infinite-scroll-next function not being hit after data refresh
I'm using aurelia's ui-virtualization library to create a table using virtual-repeat and infinite-scroll-next. Html looks something like this:
<table>
<thead>
...
</...
0
votes
1
answer
260
views
Lifecycle for ListViewItems
By default a WPF ListView (with a GridView) is virtualized. So I bind my ItemSource property to an observable collection in a ViewModel as I am using a MVVM pattern (with Caliburn.Micro but I guess ...
1
vote
1
answer
252
views
WPF based treeview with Hierarchy with Virtualization
I've following requirement while designing UI for application.
We have hierarchy as shown below
Level1
Level2.1
Level3
1000Thumbnails..... (inside Wrap Panel which is inside ListBox)
Level2.2 ...
0
votes
1
answer
352
views
Aurelia UI Virtualization - Rebinding
I'm playing around with the cool Aurelia UI-Virtualization plugin (https://github.com/aurelia/ui-virtualization) to provide a user with a list of search results.
If they do a new search, I want to ...
1
vote
0
answers
293
views
Aurelia UI virtualization with flex box divs (five columns)
I have an Aurelia app where I want to have an infinite scroll in one part of a dashboard application. So, my scrolling area is only on one part of the screen. I have it scrolling but the scroll is ...
2
votes
0
answers
3k
views
WPF UI Virtualization in canvas
In my application I have big canvas with a lot of items. It is a mix of Rectangles and custom usercontrols. The items are added dynamically in codebehind and the UI looks a bit like this:
When I ...
4
votes
1
answer
2k
views
Why does my WPF ListView/GridView not virtualize?
I have performance problem with my listview/gridview.
I traced it down to the view not being virtualized. I removed all business critical code and was left with the following XAML.
<UserControl ...
3
votes
1
answer
725
views
Accessing RelativePanel in DataTemplate of every ListViewItem in ListView UWP Windows 10
I want to access and change FlowDirection of the RelativePanel in each ListViewItem in its DataTemplate. I tried this exact method, had the same error: How do I access a control inside a XAML ...
1
vote
0
answers
691
views
Datagrid Virtualization affect Selection of items
I have a datagrid that shows large number of data so I turn on the virtualization. On my grid I also have a checkbox column that is bind two-way on IsSelected property of my viewmodel. When I tried to ...
0
votes
0
answers
105
views
EnableColumnVirtualization=true changes selectedItem
According to the msdn suggestion I set
<Setter Property="EnableRowVirtualization" Value="True"/>
<Setter Property="EnableColumnVirtualization" Value="True"/>
But I recognized ...
1
vote
1
answer
3k
views
Listbox with thousand of images in a wrappanel
I'm trying to create a listbox that may contain over a thousand images in a grid like design. In term of design it would be quite similar to this:
Since I can't use a wrappanel as that would break UI ...
3
votes
1
answer
4k
views
WPF DataGrid: IsVirtualizingWhenGrouping="True" not working
I have a DataGrid that has a CollectionViewSource bound to it's ItemSource Property:
<DataGrid Grid.Row="0" RowBackground="#10808080" AlternatingRowBackground="Transparent"
...