Unplanned
Last Updated: 02 Jun 2023 14:04 by Akesh Gupta
Created by: Akesh Gupta
Comments: 0
Category: ListView
Type: Feature Request
1
Provide PullToRefresh functionality about ListView control for Desktop.

If using a touch screen it should behave the same as mobile, if using a mouse, I'd say just let the user click and drag down to refresh.
Unplanned
Last Updated: 02 Jun 2023 08:43 by Wayne

windows device with touch capabilities/monitor with touch -> the listview swipes and shows the swipe template, however pressing the button in the swipe or attempting to close the swipe makes the swipe content disappear and the entry to remain in the swiped position.Also multiple swipes are allowed. The swipe cannot be ended, etc. 

 

Using the mouse - > swiping works as expected.

Unplanned
Last Updated: 01 Jun 2023 08:25 by Akesh Gupta
Support for relative source binding in the Listview ItemTemplate/SwipeTemplate
Unplanned
Last Updated: 31 May 2023 15:03 by Akesh Gupta
You should be able to swipe left or right from any part of the row and have it work, not just a very small unmarked section near each edge;
Unplanned
Last Updated: 30 May 2023 10:39 by JP

The bug can be reproduced quite easily with the SDK examples. Choose any ListView example from the LoadOnDemand category that uses LoadOnDemandMode set to Automatic, e.g. ListView/LoadOnDemand/LoadOnDemandEvent. Remove the initial items from the ItemsSource:

public ViewModel()
{
    this.Source = new ObservableCollection<string>();
    //for (int i = 0; i < 14; i++)
    //{
    //    this.Source.Add(string.Format("Item {0}", i));
    //}
    this.LoadItemsCommand = new Command(this.LoadItemsCommandExecute);
}

Run the example to observe the exception almost immediately.

In Development
Last Updated: 15 May 2023 13:13 by ADMIN
Created by: John
Comments: 7
Category: ListView
Type: Bug Report
1

Changing the ItemsSource property of the ListView causes it to recreate its cells. The problem is that the existing cells are never reclaimed by the garbage collector, so the memory usage grows constantly. Eventually, the application can run out of memory, if the ItemsSource is updated too many times.

Note: It is possible the memory leak is caused by the bindings holding objects longer than necessary. Similar memory leaks can be reproduced with the .NET MAUI CollectionView as well. Here are a few GitHub issues for the CollectionView that might be related:

 

 

Unplanned
Last Updated: 09 May 2023 06:03 by JP
Created by: JP
Comments: 0
Category: ListView
Type: Feature Request
2
Provide a way to set header and footer that are always visible in the ListView and are excluded from the scrolling.
Currently the property exists only for GroupHeaders. I want to have the same option for the HeaderTemplate. 
Unplanned
Last Updated: 26 Apr 2023 21:00 by Aaron

Hi Team,

Please expose the ScrollViewer, or expose a method on the RadListView that allows the developer to set a Y device-independent vertical position. Setting the Y value will trigger the internal/native scrollview to go to that position without any special animations or manipulation. Just a pure position set.

I need to be able to programmatically scroll to a specific position in the list. Yes, I am aware of the ScrollToItem methods, however that will not work in my case as I explicitly need the Y position (for acceleration and manipulation of the exact position).

As an example, here's how I am currently doing it for a ScrollView:

private async Task AutoScrollAsync()
        {
            while (!(this.ScrollVelocity == 0 || this.ScrollVelocity > 0 && this.IsScrolledToBottom() || this.ScrollVelocity < 0 && this.IsScrolledToTop()))
            {
                await this.scrollView.ScrollToAsync(0, this.CalculateNextScrollY(), false);
                await Task.Delay(ScrollDelay);
            }

            this.StopScrolling();
        }

I am hoping to be able to do the same thing for the RadListView.

Thank you,

Aaron

Declined
Last Updated: 25 Apr 2023 08:13 by ADMIN
Created by: Legrand
Comments: 1
Category: ListView
Type: Feature Request
0

I tried to make an horizontal listview, using ListViewGridLayout. I want only one row with all the items from the collection.

I don't know how to set the SpanCount properly.

In the template, the image is not displayed (the function ImageResource  is working in other control), only the Label is displayed.

                <telerik:RadListView 
                    Grid.Column="3"                
                    ItemsSource="{Binding StepList}"
                    >
                    <telerik:RadListView.ItemTemplate>
                        <DataTemplate>
                            <telerik:ListViewTemplateCell>
                                <telerik:ListViewTemplateCell.View>
                                        <Grid>
                                            <HorizontalStackLayout Margin="10, 10, 10, 0">
                                                <Image IsVisible="True"  Source="{versares:ImageResource Images.nextstep.jpg}" HeightRequest="16" VerticalOptions="Center" />
                                                <Label Text="{Binding DisplayedName}" FontSize="16" FontAttributes="Bold" TextColor="Black" VerticalOptions="Center" />
                                            </HorizontalStackLayout>
                                        </Grid>
                                </telerik:ListViewTemplateCell.View>
                            </telerik:ListViewTemplateCell>
                        </DataTemplate>
                    </telerik:RadListView.ItemTemplate>
                    <telerik:RadListView.LayoutDefinition>
                        <telerik:ListViewGridLayout
                            SpanCount="{Binding StepListCount}"
                                HorizontalItemSpacing="2" 
                                VerticalItemSpacing="2" />
                    </telerik:RadListView.LayoutDefinition>
                </telerik:RadListView>
In Development
Last Updated: 07 Apr 2023 08:51 by ADMIN
When using the RadListView on WinUI, I got the following binding errors in the output: 
Error: BindingExpression path error: 'HandleIconPath' property not found on 'Telerik.Maui.Controls.Compatibility.DataControlsRenderer.UWP.ExtendedListViewItem'. BindingExpression: Path='HandleIconPath' DataItem='Telerik.Maui.Controls.Compatibility.DataControlsRenderer.UWP.ExtendedListViewItem'; target element is 'Microsoft.UI.Xaml.Controls.BitmapIcon' (Name='PART_ReorderHandle'); target property is 'UriSource' (type 'Uri')
Unplanned
Last Updated: 28 Mar 2023 13:49 by Victor
We want a way to change/control the animation during a drag and drop. Instead of rearranging everything in the live time, it'd be nice to have a line indicator appear between the rows to show where the row will be placed as you drag the row and just rearrange everything after it's released. 
Unplanned
Last Updated: 20 Mar 2023 11:04 by Marwen

When having a nested grid layouts with auto and definitive row heights, the content in the ListView ItemTemplate is not property sized only on iOS. On Android, MacCatalyst and WinUI the content is property sized. 

Solution:

1. Using only auto-sized grid rows, 

2. Using grouping and simplifying the layout, removing nested grid layouts, and using a vertical stack. 

Unplanned
Last Updated: 17 Mar 2023 13:04 by Jason
Created by: atlanta
Comments: 3
Category: ListView
Type: Feature Request
6

An example with CollectionView:

<CollectionView ItemsSource="{Binding EmptyMonkeys}"
                EmptyView="No items to display" />

Unplanned
Last Updated: 08 Mar 2023 07:40 by Christoph
Created by: Christoph
Comments: 0
Category: ListView
Type: Feature Request
1
Add events to handle when listview cells are unloaded/recycled and created.
Unplanned
Last Updated: 07 Mar 2023 10:37 by Christoph
Swiping the cell overlaps the next cell when itemspacing is set. 

Unplanned
Last Updated: 02 Mar 2023 13:42 by ADMIN
Maui App with AddSingleton Page,

when entering the page with ListView for the first time, and adding items to the ListView, it works as expected, but when entering the page again, and press the add button, null reference exception is thrown. 
Unplanned
Last Updated: 28 Feb 2023 13:53 by Nathan

Having ContentViews for left and right item swipe

  • Remove an Item from the List View Collection using right swipe content (The Item Source is then re-initialized as a new Observable Collection)
  • Attempt to perform a Swipe Gesture on any list view item.

The ListView crashes

Unplanned
Last Updated: 25 Feb 2023 13:03 by manikanta
Created by: SturmA
Comments: 3
Category: ListView
Type: Bug Report
6
when changes are made in the xaml, they are not applied live in the running app using the Hot Reload
Unplanned
Last Updated: 30 Jan 2023 13:10 by ADMIN
Created by: SturmA
Comments: 1
Category: ListView
Type: Feature Request
0
Provide an option to set corner radius to the ListView item style and selected item style
Completed
Last Updated: 18 Jan 2023 12:29 by ADMIN
Release 5.0.0

I used RadListView in a Grid, Grid has ColumnSpacing, 

for example:

 <Grid
RowSpacing="1"
      ColumnSpacing="1"
      WidthRequest="305"
      HeightRequest="303"
      BackgroundColor="#FF454545">
    <Grid.RowDefinitions>
        <RowDefinition Height="36"/>
        <RowDefinition Height="28"/>
        <RowDefinition Height="82"/>
        <RowDefinition Height="50"/>
        <RowDefinition Height="50"/>
        <RowDefinition Height="50"/>
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="152"/>
        <ColumnDefinition Width="152"/>
    </Grid.ColumnDefinitions>

    <telerik:RadListView x:Name="listView" Grid.Row="5" Grid.ColumnSpan="2" WidthRequest="305">
        <telerik:RadListView.ItemTemplate>
            <DataTemplate>
                <telerik:ListViewTemplateCell>
                    <telerik:ListViewTemplateCell.View>
                        <Grid BackgroundColor="Gray">
                            <Label Margin="10" Text="{Binding Name}" />
                        </Grid>
                    </telerik:ListViewTemplateCell.View>
                </telerik:ListViewTemplateCell>
            </DataTemplate>
        </telerik:RadListView.ItemTemplate>
    </telerik:RadListView>
</Grid>

I found the RadListView.Width is 304(ColumnDefinition plus), not 305. 

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