Questions on UI for .NET MAUI Forum

0 answers

2 views

Good afternoon, I would like to know about the styling of DataGrid Search as You Type in the documentation did not find the appropriate material. Did I miss something?

DataGrid

asked on 03 May 2024

1 answer

17 views

DataGrid Nested Property Text Filter Descriptor works unclearly

Good afternoon, can you please advise me, am I assuming correctly to use Nested Property Text Filter Descriptor in DataGrid, it allows to use nested property filtering? If yes, why it doesn't work, here is a sample code:

<telerik:NestedProprtyTextFilterDescriptor PropertyName="Property.Nested"
                                           Operator="Contains"
                                           Value="MyValue"/>

DataGrid

answered on 09 Apr 2024

1 answer

14 views

DataGrid propety SelectedItems doesn't exist

Good afternoon, can you please advise why the documentation states: "SelectedItems.
The DataGrid exposes the SelectedItem and SelectedItems properties which you can use depending on whether you have defined a single or multiple selection mode.", but in practice there is no SelectedItems property.

DataGrid

answered on 09 Apr 2024

1 answer

20 views

Mouse drag row reordering with MAUI RadDataGrid?

Is there a way in a MAUI RadDataGrid to use a mouse to drag a row to a new spot in row order? Any examples?

Thanks !

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

https://docs.telerik.com/devtools/maui/controls/datagrid/columns/reordering

DataGrid

answered on 05 Apr 2024

1 answer

7 views

Set PropertyName for TextFilterDescriptor nested property

Good afternoon, I would like to know if it is possible to use nested properties in DataGrid FilterDescriptors, as my attempts do not result in the expected behavior. Here is the sample code I am using:

<telerik:RadDataGrid x:Name="dataGrid">
   <telerik:RadDataGrid.Columns>
      <telerik:DataGridTextColumn HeaderText="Property" "PropertyName="Property.NestedProperty" />
   </telerik:RadDataGrid.Columns>
   <telerik:RadDataGrid.FilterDescriptors>
      <telerik:TextFilterDescriptor PropertyName="Property.NestedProperty" Operator="EqualsTo" Value="Value" />
   </telerik:RadDataGrid.FilterDescriptors>
</telerik:RadDataGrid>

DataGrid

answered on 29 Mar 2024

2 answers

36 views

[Android] RadGridView with too many rows crashes app

Hi,

Using VS 2022 17.10 / .NET 8.0.3 / Telerik UI for MAUI 6.8 / MAUI 8.0.10 / Android 10 (API 29)

I've got a RadGridView on a ContentPage :

 <c:NDCDataGrid
     x:Name="dataGridDetails"
     ItemsSource="{Binding DetailedData}">
     <t:RadDataGrid.Columns>
         <t:DataGridTextColumn HeaderText="Location" PropertyName="LocationName" />
         <t:DataGridTextColumn
             CellContentFormat="{}{0: dd/MM/yyyy}"
             HeaderText="Date"
             PropertyName="Date" />
         <t:DataGridTextColumn HeaderText="Count" PropertyName="Count" />
         <t:DataGridTextColumn HeaderText="Type" PropertyName="Desc" />
     </t:RadDataGrid.Columns>
 </c:NDCDataGrid>

My NDCDataGrid is defined like this :

<t:RadDataGrid
    x:Class="NDC.Mobile.Controls.NDCDataGrid"
    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:t="http://schemas.telerik.com/2022/xaml/maui"
    AutoGenerateColumns="False"
    CanUserReorderColumns="False"
    SelectionMode="Single"
    SelectionUnit="Row"
    UserFilterMode="Disabled">
    <t:RadDataGrid.AlternateRowBackgroundStyle>
        <AppThemeBinding>
            <AppThemeBinding.Light>
                <t:DataGridBorderStyle
                    BackgroundColor="Beige"
                    BorderColor="Black"
                    BorderThickness="1" />
            </AppThemeBinding.Light>
            <AppThemeBinding.Dark>
                <t:DataGridBorderStyle
                    BackgroundColor="DimGray"
                    BorderColor="White"
                    BorderThickness="1" />
            </AppThemeBinding.Dark>
        </AppThemeBinding>
    </t:RadDataGrid.AlternateRowBackgroundStyle>
    <t:RadDataGrid.SelectionStyle>
        <AppThemeBinding>
            <AppThemeBinding.Light>
                <t:DataGridBorderStyle
                    BackgroundColor="LightGreen"
                    BorderColor="Black"
                    BorderThickness="1" />
            </AppThemeBinding.Light>
            <AppThemeBinding.Dark>
                <t:DataGridBorderStyle
                    BackgroundColor="DarkBlue"
                    BorderColor="White"
                    BorderThickness="1" />
            </AppThemeBinding.Dark>
        </AppThemeBinding>
    </t:RadDataGrid.SelectionStyle>
</t:RadDataGrid>

When loading a list of 900+ elements, the app crashes

await Task.Run(async () =>
{
    DetailedData = new ObservableCollection<MyType>(await myService.Method());
});

MyType is defined like this :

   public int LocationName { get; set; }

   public int Count { get; set; }

   public DateTime Date { get; set; }

   public string Desc { get; set; }

Java.Lang.RuntimeException: 'Canvas: trying to draw too large(119964240bytes) bitmap.'

 	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:13,5	C#
 	0x1E in Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPL_V at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNINativeWrapper.g.cs:126,26	C#
 	0x17 in System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw	C#
 	0x8C in Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod at /Users/runner/work/1/s/xamarin-android/external/Java.Interop/src/Java.Interop/obj/Release/net7.0/JniEnvironment.g.cs:20830,5	C#
 	0x2D in Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeNonvirtualVoidMethod at /Users/runner/work/1/s/xamarin-android/external/Java.Interop/src/Java.Interop/Java.Interop/JniPeerMembers.JniInstanceMethods_Invoke.cs:93,6	C#
 	0xA6 in Android.Graphics.RecordingCanvas.DrawBitmap at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/obj/Release/net8.0/android-34/mcw/Android.Graphics.RecordingCanvas.cs:161,5	C#
 	0x68 in SkiaSharp.Views.Android.SurfaceFactory.DrawSurface	C#
 	0xCB in SkiaSharp.Views.Android.SKCanvasView.OnDraw	C#
 	0x11 in Android.Views.View.n_OnDraw_Landroid_graphics_Canvas_ at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/obj/Release/net8.0/android-34/mcw/Android.Views.View.cs:18998,4	C#
 	0x9 in Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPL_V at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNINativeWrapper.g.cs:125,5	C#
 	0xF in Java.Interop.JniNativeMethods.CallNonvirtualBooleanMethodA at /Users/runner/work/1/s/xamarin-android/external/Java.Interop/src/Java.Interop/obj/Release/net7.0/JniEnvironment.g.cs:18200,4	C#
 	0x73 in Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualBooleanMethod at /Users/runner/work/1/s/xamarin-android/external/Java.Interop/src/Java.Interop/obj/Release/net7.0/JniEnvironment.g.cs:20458,4	C#
 	0x8A in Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeVirtualBooleanMethod at /Users/runner/work/1/s/xamarin-android/external/Java.Interop/src/Java.Interop/Java.Interop/JniPeerMembers.JniInstanceMethods_Invoke.cs:164,7	C#
 	0x70 in Android.Views.ViewGroup.DrawChild at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/obj/Release/net8.0/android-34/mcw/Android.Views.ViewGroup.cs:2839,5	C#
 	0x4 in Microsoft.Maui.Controls.Platform.Compatibility.ShellFlyoutRenderer.DrawChild at D:\a\_work\1\s\src\Controls\src\Core\Compatibility\Handlers\Shell\Android\ShellFlyoutRenderer.cs:172,4	C#
 	0x1C in Android.Views.ViewGroup.n_DrawChild_Landroid_graphics_Canvas_Landroid_view_View_J at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/obj/Release/net8.0/android-34/mcw/Android.Views.ViewGroup.cs:2824,4	C#
 	0xD in Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPLLJ_Z at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNINativeWrapper.g.cs:323,5	C#

The control is unusable in this state !

Thanks.

DataGrid

answered on 15 Mar 2024

1 answer

16 views

How do you style Rad Data Grid Search Panel in Dark Mode

I have a Rad Data grid that is working fine in dark mode, but the search panel is not. What do I need to do to style that.

This is what it looks like.. If I could just get the text to come outblak it would be acceptable

DataGrid

answered on 06 Mar 2024

0 answers

23 views

Expanding TelerikGrid DetailTemplate after a rebind

Looking for a solution to expand the previous expanded DetailTemplate after a grid rebind. The data for the grid is updated from a click event within the DetailTemplate and need the grid updated and the expanded row to either stay expanded or re-expand after the grid rebind.

DataGrid

updated question on 05 Mar 2024

1 answer

19 views

DataGridColumnHeaderStyle won't let me use DynamicResource bindings

Hi there,

I am trying to style my dataGrid and I can't seem to use dynamic bindings for background colors etc. Whenever I do I get type mismatch compilation errors.

If I switch to StaticResources it works just fine.

For app themes I obviously need these values to be dynamic.

Any idea what I'm doing wrong here? Background styles and binding works correctly throughout the app so the binding is correct. It just doesn't want to compile for this control.

Thanks!

Angus

DataGrid

answered on 29 Feb 2024

1 answer

14 views

Maui DataGrid ColumnHeader HorizontalTextAlignment "Center" doesnt work

Hi,

seems that the HorizontalTextAlignment="Center" isnt working for the DataGrid ColumnHeader, or at least I am unable to get it working.
For the cells it works.

NuGet Telerik.UI.for.Maui (6.7.0), latest VS2022 with latest Net8/Maui

I am new to Maui/Xaml.

Please help

Uli

Here is my MainPage.xaml and attached a screenshot of the running DataGrid:

<?xml version="1.0" encoding="utf-8" ?>