Unplanned
Last Updated: 14 Aug 2025 11:27 by Jack
The bug occurs when dynamically swapping the content of a RadNavigationView in a .NET MAUI application on Windows: if you replace the content with a new instance of a complex control like RadDataGrid (e.g., by setting navigationView.Content = new SampleContentView() in response to navigation or button clicks), the grid may not render or appear at all. This issue does not affect Android or other platforms and is caused by the Windows platform's failure to properly re-measure and re-render the visual tree when the navigation view's content is replaced at runtime, especially with third-party controls.
Unplanned
Last Updated: 11 Aug 2025 15:36 by Leonard
Created by: Leonard
Comments: 0
Category: DataGrid
Type: Feature Request
0

I want to select multiple rows by selecting one and then holding down the shift key and selecting more.

For example in WPF DataGrid there is an Extended multiple selection option: https://docs.telerik.com/devtools/wpf/controls/radgridview/selection/multiple-selection 

Unplanned
Last Updated: 08 Aug 2025 10:19 by Teddy
PlatformView cannot be null here occurs in RadBorderHandler.MapBackgroundColor() when calling DisconnectHandlers() on views containing RadAutoComplete controls during the Unloaded event.
Unplanned
Last Updated: 05 Aug 2025 16:22 by Henrik

Current working behavior: when setting the offset and gradient colors to bar indicator, the gradient is drawn based on the indicator size. I want to draw the gradient based on the axis size.

Current behavior:

 

Scenario I want to achieve:

Unplanned
Last Updated: 04 Aug 2025 11:23 by John
Having a ListView with items with long text, it seems on iOS 18.5, the items are not rendered dynamically. they are with static height. 
Unplanned
Last Updated: 30 Jul 2025 09:32 by ADMIN
Cannot scroll to the first messages when the keyboard appears. When the keyboard is closed, the messages can be reached.
Unplanned
Last Updated: 22 Jul 2025 06:07 by ADMIN

Ran into this issue - which seems to be dependent on how the content gets rendered, so it will fail 100% of the time on specific configurations, resulting in unusable applications.

I've found this issue on Android but there's no telling if the issue is cross platform - as it may depend on item sizings and layout, it may also be reproducible on other platforms, I just haven't hit it yet. The device you run it on may also influence the result, as different resolutions and scalings will impact how items are rendered on screen. I've reproduced this on a Pixel 7 (real device), Samsung A21s (real device) and Pixel 7 Pro (emulator).

Repro steps

  1. Create a new maui sample app, with the relevant Telerik components/initialisation.
  2. Add the xaml and code shown below to the MainPage.
  3. Run the application
  4. OBSERVE
    1. ArgumentOutOfRangeException will be thrown in RadWrapLayoutManager.ArrangeChildren
  5. Stop the app. Comment out the last item being added to the wrap layout and run the app again.
  6. OBSERVE
    1. It will run fine.

MainPage.xaml - use this as the page content:

    <ScrollView Padding="15,0,15,15">
        <VerticalStackLayout Spacing="25">
            <telerik:RadWrapLayout
                x:Name="BrokenLayout"
                Margin="-5"
                SizeChanged="BrokenLayout_SizeChanged"
                StretchLastChild="False">
                <BindableLayout.ItemTemplate>
                    <DataTemplate>
                        <Grid
                            Margin="3.75"
                            Padding="3.75"
                            BackgroundColor="LightGreen">
                            <Label
                                FontAttributes="Bold"
                                FontSize="11"
                                LineBreakMode="TailTruncation"
                                MaxLines="2"
                                Text="{Binding}"
                                VerticalOptions="End" />
                        </Grid>
                    </DataTemplate>
                </BindableLayout.ItemTemplate>
            </telerik:RadWrapLayout>
        </VerticalStackLayout>
    </ScrollView>

MainPage.xaml.cs code

    public partial class MainPage : ContentPage
    {
        public MainPage()
        {
            InitializeComponent();
            List<string> items = new List<string>();

            items.Add("TSONE");
            items.Add("N ANCETOIDO");
            items.Add("ADDKNEDEGO LW");
            items.Add("A EFCTTLIAH");
            items.Add("OHACP HTATTO");
            items.Add("AASESII NAYXB/RFKL");
            items.Add("EMIQULENOCE PTCTL");
            items.Add("SCNSTUGRRIOEMA TEU");
            items.Add("EPEENSX");
            items.Add("BRUXEROL TAA");
            items.Add("TVLRETAAX ER");
            items.Add("SMA SELISD");
            items.Add("NIAEGOEEATIRUPR SVT");
            items.Add("CTPLRCELT AO");
            items.Add("REAREPTIRDQ U");
            items.Add("ASEDP TUR");
            items.Add("CJTEUT ORPDEAP");
            items.Add(" CECCRNTARODTO");
            items.Add("- FLEOUTEQRUOPWSL");
            items.Add("PINTRNMEU REEQTU");
            items.Add("RE LWSRANKOGIO TNT");
            items.Add("KAREBTA KE");
            items.Add("ITTANIW MIEG"); // comment out this one and it'll run fine. keep it and it'll fail.

            BindableLayout.SetItemsSource(this.BrokenLayout, items);
        }

        private double _width = 0;
        private double minItemWidth = 110.0;
        private double maxItemWidth = 160.0;

        private void BrokenLayout_SizeChanged(object sender, EventArgs e)
        {
            if (sender is RadWrapLayout wl
                && wl.Width > 0 
                && (int)Math.Floor(wl.Width) is int widthInt
                && widthInt != this._width)
            {
                this._width = widthInt;

                double? candidateItemWidth = null;
                var itemCount = wl.Children.Count;

                if (itemCount > 0 && itemCount * maxItemWidth >= widthInt)
                {
                    var columnCount = (int)Math.Ceiling(widthInt / maxItemWidth);

                    candidateItemWidth = (int)Math.Floor((double)widthInt / columnCount);

                    if (candidateItemWidth > 1.25 * maxItemWidth)
                    {
                        columnCount += 1;
                        candidateItemWidth = (int)Math.Floor((double)widthInt / columnCount);
                    }
                    else if (candidateItemWidth < minItemWidth)
                    {
                        columnCount -= 1;
                        candidateItemWidth = (int)Math.Floor((double)widthInt / columnCount);
                    }
                }

                wl.ItemWidth = candidateItemWidth ?? maxItemWidth;
            }
        }
    }

Error:

System.ArgumentOutOfRangeException: 'Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')'

 	0xFFFFFFFFFFFFFFFF in Android.Runtime.RuntimeNativeMethods.monodroid_debugger_unhandled_exception	C#
 	0x1A in Android.Runtime.JNINativeWrapper._unhandled_exception at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNINativeWrapper.g.cs:12,5	C#
 	0x26 in Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPZIIII_V at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNINativeWrapper.g.cs:441,26	C#
 	0x8 in System.ThrowHelper.ThrowArgumentOutOfRange_IndexMustBeLessException	C#
 	0x9 in System.Collections.Generic.List<double>.get_Item	C#
 	0x205 in Telerik.Maui.RadWrapLayoutManager.ArrangeChildren	C#

 
Unplanned
Last Updated: 21 Jul 2025 09:44 by JoPi
Created by: JoPi
Comments: 0
Category: TreeDataGrid
Type: Feature Request
1
As the TreeDataGrid inherits from DataGrid, the DataGrid does not support items of different type, even if all items in the items-source have a property with the same name. Please provide such support for both controls. 
Unplanned
Last Updated: 21 Jul 2025 07:16 by ADMIN
Create a blank telerik project (I've not used shell);
Update maui to 9.0.50 (for more relevance with current code);
Replace the contents of MainPage.xaml with the xaml shown below;
Remove unnecessary code from MainPage.xaml.cs to allow app to build and run;
OBSERVE:
Test 1.2 fails - items are shown on a single row when they should not fit.
Test 1.3 fails - items are shown on a single row when they should not fit, and the wrap layout is extended to two rows.
Test 2.1 fails - items are show on two rows when they should fit a single one.
Unplanned
Last Updated: 18 Jul 2025 11:14 by Teddy

In popup mode when scaling is 75%, tapping outside close to the view border does not work, the control keeps the width and height as in 100%

in drop down mode the drop-down is not close to the picker, there is a height between them.

Unplanned
Last Updated: 18 Jul 2025 07:02 by ADMIN
CollectionView item swipe doesn't work.
Unplanned
Last Updated: 18 Jul 2025 06:28 by Subburaj
Created by: Subburaj
Comments: 0
Category: UI for .NET MAUI
Type: Feature Request
1

add a button control in which you can swipe its content 

Unplanned
Last Updated: 14 Jul 2025 07:56 by ADMIN
Created by: atlanta
Comments: 1
Category: Entry
Type: Feature Request
3
The Entry control should expose an event after ClearButton click
Unplanned
Last Updated: 11 Jul 2025 12:09 by ADMIN
Created by: Chris
Comments: 1
Category: DataGrid
Type: Feature Request
0

Currently, i can use the public method ScrollItemIntoView to scroll to an item in the DataGrid. 

I noticed you have an internal method: ScrollColumnIntoView. Please make it public so I can use it to scroll to a specific column.

Unplanned
Last Updated: 02 Jul 2025 19:16 by Teddy
Created by: Teddy
Comments: 0
Category: UI for .NET MAUI
Type: Feature Request
0

Hi Team,

We have a scenario where our license key file is hosted on a team-only file share. However, the file share only works with HTTP/S links and not a UNC path.

For example, this works perfectly:

TELERIK_LICENSE_PATH="\\internalshare\folder\telerik-license.txt"

However, we cannot use 

TELERIK_LICENSE_PATH="http://internalshare.com/telerik-license.txt"

You can reproduce this for yourself by trying it with Azure Blob Storage:

 

Thank you,

Teddy

Unplanned
Last Updated: 02 Jul 2025 07:33 by ADMIN
Created by: Paul
Comments: 2
Category: DataGrid
Type: Feature Request
4
I would like to use a mouse to drag a row to a new spot in row order.

Found this info for WinForms, but not finding anything for MAUI RadDataGrid

https://docs.telerik.com/devtools/winforms/knowledge-base/gridview-drag-drop-bound-mode 

https://docs.telerik.com/devtools/winforms/controls/gridview/end-user-capabilities/reordering-rows 
Unplanned
Last Updated: 30 Jun 2025 12:13 by Stephen
A scenario with a requirement to display information about the entire group, including recursively all child groups, needs access to the actual items and/or subgroups. Exposing these and parent info would allow for greater flexibility in displaying custom information in group headers.
Unplanned
Last Updated: 27 Jun 2025 09:23 by Teddy
Currently, the PropertyGroupDescriptor in the DataGrid component does not support grouping by nested properties (e.g., Customer.Address.City). Enhance the PropertyGroupDescriptor to support nested property paths, allowing developers to group data based on sub-properties within complex objects. This would align with common data-binding patterns and improve the flexibility of the DataGrid for real-world scenarios involving nested data models.
Unplanned
Last Updated: 20 Jun 2025 08:04 by Yadagiri
Created by: Yadagiri
Comments: 0
Category: TreeDataGrid
Type: Feature Request
0
Please add support for multiple row column headers. As an example of what I'm referring to, see the Telerik UI for Blazor implementation here => Blazor DataGrid Demos - Multi-Column Headers | Telerik UI for Blazor
Unplanned
Last Updated: 18 Jun 2025 04:59 by Sunil

In MAUI CollectionView when scrolling an item into view, the exact position of the item after the scroll has completed can be specified with the position argument of the ScrollTo methods.

Please provide such option for Telerik MAUI CollectionView inside the ScrollItemIntoView method.

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