or
1 answer
97 views
Hi Telerik,
I am using RadSlideView to display images, but the to swipe from one image to another, the swipe is not working when done on the image.
Whereas when done anywhere outside of the image (i.e. any where inside RadSlideView other than image) it works.
The below is the code that I am using.
NOTE: Same code works fine in Xamarin and not in MAUI.
Thanks,
Mohammed Rameez Raza.
Lance | Senior Manager Technical Support
Telerik team
answered
on
25 Jul 2023
1 answer
108 views
This is mainly a question for me as it wasted about an hour of my time today...
I have a datagrid where I have attached two commands: BeginEdit and CommitEdit.
I have set breakpoints in each of these command classes and the BeginEdit breakpoint always gets hit, but the CommitEdit will only break if you select another cell or row in the datagrid and NOT when the datagrid loses focus. It appears that something is doing a commit as when I look at the data after I have edited and left the datagrid form, the change was made to the viewmodel that the datagrid row was displaying.
As I stated, I wasted too much time trying to figure out how to perform an edit in my datagrid, but your documentation says NOTHING about there being some catchall trap that performs the commit. Either this is a bug - the CommitEdit command IS NOT executed when the cell loses focus or your documentation needs to be updated...
It took waaaaaaaaaaaaaaaaay toooooooooooo long to figure this out...
Didi
Telerik team
answered
on
25 Jul 2023
1 answer
58 views
My guess, by looking at the code, there is no way to do this. This is a HUGE design mistake on Telerik's behalf. If there is a way, please enlighten me, if not, please open a feature request to allow this behavior.
Thanks, Steve
Didi
Telerik team
answered
on
25 Jul 2023
1 answer
77 views
I need to use the RadAccordion, but I'm not seeing any documentation or way in code to assign a collection of RadAccordionItem. I have a collection of items that need to be displayed using the according, not static items with dynamic content.
Can you point me to some documentation or a way to assign a collection to the accordionitems?
Thanks
Billy
Didi
Telerik team
answered
on
24 Jul 2023
1 answer
974 views
Greetings,
I needed to reimage my test machine and when I tried to configure the NuGet Telerik definition in the NuGet Package Manager, I probably entered my password incorrectly. I cannot find any menu item that would allow me to correct it. I checked the box "Remember my password" or whatever the checkbox's text was on the Telerik login screen. I am getting an "Unauthorized" response from your website...
I think it is an oversight on your behalf to have no way to correct something like this unless you have a secret way to do it!
Following the instructions to create an entry in the Package sources dialog in the NuGet Package Manager, I created a
Name: Telerik NuGet
Source: https://nuget.telerik.com/v3/index.json
This works on my development machine, just not my test machine - which seems clogged up now that you are preventing me from retyping my password.
I downloaded the Telerik.UI.forMaui package from your website and added a local pointer to my local (C:\Program Files\Telerik\Packages) and got it running, but...
I really want to correct my password if I need to reference something else that isn't in the package I mentioned above. How do I do that?
Thanks! Steve
Didi
Telerik team
answered
on
24 Jul 2023
0 answers
520 views
I updated the version of the Telerik controls from 5.0.1 to 6.0.0 and some popups have started to throw errors. The odd thing is that not all popups throw this exception...
In my formatted log (using NLog) I see this when I try to open a certain popup. This popup worked just minutes prior to the upgrade as I added some functionality to it. As soon as I upgraded to 6.0, it bombs...
----------------------------------
2023-07-23 10:15:41.4515 ERROR
Call site: MauiProgram.FirstChanceException
Method name: MobyClient.MauiProgram.FirstChanceException
Line: 0
Exception Type: System.Runtime.InteropServices.COMException
Exception Message: No installed components were detected.
Stack Trace: at WinRT.DelegateExtensions.DynamicInvokeAbi(Delegate del, Object[] invoke_params)
at WinRT.DelegateExtensions.DynamicInvokeAbi(Delegate del, Object[] invoke_params)
at ABI.System.Collections.Generic.IVectorMethods`1.Append(IObjectReference obj, T value)
at Microsoft.Maui.Handlers.ViewHandler`2.SetupContainer()
at Microsoft.Maui.Handlers.LabelHandler.SetupContainer()
at Microsoft.Maui.Handlers.LabelHandler.MapBackground(ILabelHandler handler, ILabel label)
at Microsoft.Maui.Controls.Element.OnPropertyChanged(String propertyName)
at Microsoft.Maui.Controls.BindableObject.SetValueActual(BindableProperty property, BindablePropertyContext context, Object value, Boolean currentlyApplying, SetValueFlags attributes, Boolean silent)
at Microsoft.Maui.Controls.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes)
at Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value, Boolean fromStyle, Boolean checkAccess)
at Microsoft.Maui.Controls.Setter.Apply(BindableObject target, Boolean fromStyle)
at Microsoft.Maui.Controls.Style.ApplyCore(BindableObject bindable, Style basedOn)
at Microsoft.Maui.Controls.Style.Microsoft.Maui.Controls.IStyle.Apply(BindableObject bindable)
at Microsoft.Maui.Controls.MergedStyle.SetStyle(IStyle implicitStyle, IList`1 classStyles, IStyle style)
at Microsoft.Maui.Controls.MergedStyle.OnImplicitStyleChanged()
at Microsoft.Maui.Controls.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes)
at Microsoft.Maui.Controls.Element.OnResourcesChanged(IEnumerable`1 values)
at Microsoft.Maui.Controls.VisualElement.OnParentResourcesChanged(IEnumerable`1 values)
at Microsoft.Maui.Controls.Element.OnResourcesChanged(IEnumerable`1 values)
at Microsoft.Maui.Controls.VisualElement.OnParentResourcesChanged(IEnumerable`1 values)
at Microsoft.Maui.Controls.Element.OnResourcesChanged(IEnumerable`1 values)
at Microsoft.Maui.Controls.VisualElement.OnParentResourcesChanged(IEnumerable`1 values)
at Microsoft.Maui.Controls.Element.OnResourcesChanged(IEnumerable`1 values)
at Microsoft.Maui.Controls.VisualElement.OnParentResourcesChanged(IEnumerable`1 values)
at Microsoft.Maui.Controls.Element.OnResourcesChanged(IEnumerable`1 values)
at Microsoft.Maui.Controls.VisualElement.OnParentResourcesChanged(IEnumerable`1 values)
at Microsoft.Maui.Controls.Element.set_Parent(Element value)
at Telerik.Maui.Controls.PopupBase.IsOpenPropertyChanged(Boolean oldValue, Boolean newValue)
at Telerik.Maui.Controls.PopupBase.<>c.<.cctor>b__124_0(BindableObject b, Object o, Object n)
at Microsoft.Maui.Controls.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes)
at Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value, Boolean fromStyle, Boolean checkAccess)
at Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value)
at Telerik.Maui.Controls.PopupBase.set_IsOpen(Boolean value)
at MobyClient.ViewModels.InvitationsViewModel.FindSomeone() in C:\Development\MobyNet\Dev\MobyClient\MobyClient\ViewModels\InvitationsViewModel.cs:line 121
at CommunityToolkit.Mvvm.Input.RelayCommand.Execute(Object parameter)
at Telerik.Maui.Controls.ButtonToolbarItemView.ExecuteCommand()
at Telerik.Maui.Controls.ButtonToolbarItemView.OnClicked()
at Telerik.Maui.Controls.ButtonToolbarItemView.Telerik.Maui.Controls.IToolStripClickableView.OnClicked()
at Telerik.Maui.Controls.RadToolbar.OnContentTapped(Point touchLocation)
at Telerik.Maui.Controls.RadToolbar.OnContentTapped(Object sender, ITouchLocation eventArgs)
at Telerik.Maui.NativeGestureRecognizer.NativeView_Tapped(Object sender, TappedRoutedEventArgs e)
at WinRT._EventSource_global__Microsoft_UI_Xaml_Input_TappedEventHandler.EventState.<GetEventInvoke>b__1_0(Object sender, TappedRoutedEventArgs e)
at ABI.Microsoft.UI.Xaml.Input.TappedEventHandler.Do_Abi_Invoke(IntPtr thisPtr, IntPtr sender, IntPtr e)
Additional Info: System.Runtime.InteropServices.COMException: No installed components were detected.
----------------------------------The error message is horrible as it provides no additional context, so I have no idea what is missing!
Up until this morning, I had my NuGet package manager looking here https://api.nuget.org/v3/index.json and selected the new version. This is when the errors started. It was working just minutes prior when I was using 5.0.1. So, I downloaded the msi and installed it. That didn't fix it so I pointed my NuGet Telerik source to the local packages C:\Program Files\Telerik\Telerik_UI_for_Maui_600\Packages, found the 6.0 package and still no success. When I downgrade to 5.1 (not 5.0.1) it works...
I have a popup service that defines the popup that doesn't work as follows:
public void InitializePopups () {
if (_isInitialized) return;
// Find someone popup.
FindContactsViewModel = new FindContactsViewModel (_logger, _mobyConfigurationManager, this);
var popupContent = (View) Application.Current.Resources["FindContactsPopup"];
popupContent.BindingContext = FindContactsViewModel;
FindSomeonePopup = new RadPopup {
Content = popupContent,
Placement = PlacementMode.Center
};
// Find someone results popup.
FindContactsResultsViewModel = new FindContactsResultsViewModel (_logger, this);
popupContent = (View) Application.Current.Resources["FindContactsResultsPopup"];
popupContent.BindingContext = FindContactsResultsViewModel;
FindSomeoneResultsPopup = new RadPopup {
Content = popupContent,
Placement = PlacementMode.Center
};
_logger.Debug ($"{GetType ().Name} is initialized.");
_isInitialized = true;
}The xaml that I use for these two popups is:
<!--
Common Popups
-->
<!-- Find Contacts Popup -->
<telerik:RadBorder
x:DataType="viewModels:FindContactsViewModel"
x:Key="FindContactsPopup"
BackgroundColor="{StaticResource Background_Dark}"
BorderColor="Lime"
BorderThickness="1"
CornerRadius="8"
HorizontalOptions="Center"
Padding="10"
VerticalOptions="Start"
WidthRequest="400">
<Grid
RowDefinitions="*, Auto"
Margin="3">
<telerik:RadBorder
Grid.Row="0"
BackgroundColor="{StaticResource Background_Dark}"
BorderColor="White"
BorderThickness="1"
CornerRadius="8"
Padding="5"
VerticalOptions="Start">
<Grid
RowDefinitions="Auto, *"
Margin="3">
<Label
Grid.Row="0"
FontSize="16"
FontAttributes="Bold"
HorizontalOptions="Center"
Text="{x:Static strings:LabelResources.LabelFindContactsHeader}"
TextColor="White"
VerticalOptions="Start" />
<Editor
Grid.Row="1"
AutoSize="TextChanges"
BackgroundColor="White"
Margin="1,11,1,1"
Placeholder="{x:Static strings:LabelResources.PlaceholderEnterAddressesToFind}"
PlaceholderColor="Gray"
Text="{Binding FindSomeoneList}"
TextColor="Black"
VerticalOptions="Start" />
</Grid>
</telerik:RadBorder>
<HorizontalStackLayout
Grid.Row="1"
HorizontalOptions="End"
Margin="0,10,0,0"
VerticalOptions="End">
<telerik:RadButton
Command="{Binding ShowFindSomeoneResultsCommand}"
FontSize="14"
HeightRequest="40"
Text="{x:Static strings:LabelResources.LabelFind}"
WidthRequest="90" />
<telerik:RadButton
Command="{Binding CancelFindContactsCommand}"
FontSize="14"
HeightRequest="40"
Margin="8,0,0,0"
Text="{x:Static strings:LabelResources.LabelCancel}"
WidthRequest="90" />
</HorizontalStackLayout>
</Grid>
</telerik:RadBorder>
<!-- Find Contacts Results Popup -->
<telerik:RadBorder
x:DataType="viewModels:FindContactsResultsViewModel"
x:Key="FindContactsResultsPopup"
BackgroundColor="{StaticResource Background_Dark}"
BorderColor="Lime"
BorderThickness="1"
CornerRadius="8"
HorizontalOptions="Center"
Padding="10"
VerticalOptions="Start"
WidthRequest="400">
<Grid
RowDefinitions="*, Auto"
Margin="3">
<telerik:RadBorder
Grid.Row="0"
BackgroundColor="{StaticResource Background_Dark}"
BorderColor="White"
BorderThickness="1"
CornerRadius="8"
Padding="5"
VerticalOptions="Start">
<Grid
RowDefinitions="Auto, *"
Margin="3">
<Label
Grid.Row="0"
FontSize="16"
FontAttributes="Bold"
HorizontalOptions="Center"
Text="{x:Static strings:LabelResources.LabelFindContactsResultsHeader}"
TextColor="White"
VerticalOptions="Start" />
<telerik:RadDataGrid
x:DataType="viewModels:FindContactsViewModel"
x:FieldModifier="Public"
x:Name="FindContactsDataGrid"
Grid.Row="1"
AutoGenerateColumns="False"
BackgroundColor="White"
CanUserReorderColumns="False"
CanUserResizeColumns="True"
CurrentCellStyle="{StaticResource CurrentCellStyle}"
GridLinesColor="LightGray"
GridLinesThickness="1"
GridLinesVisibility="Both"
GroupHeaderStyle="{StaticResource GroupHeaderStyle}"
HeightRequest="400"
ItemsSource="{Binding Contacts}"
Margin="1,11,1,1"
MouseHoverStyle="{StaticResource MouseHoverStyle}"
RowBackgroundStyle="{StaticResource RowBackgroundStyle}"
RowHeight="30"
SelectionMode="None"
SelectionStyle="{StaticResource SelectionStyle}"
SelectionUnit="Row"
ShowColumnFooters="False"
ShowGroupFooters="False"
ShowGroupHeaderAggregates="False"
UserEditMode="None"
UserFilterMode="Disabled"
UserGroupMode="Disabled"
UserSortMode="Multiple">
<telerik:RadDataGrid.Columns>
<telerik:DataGridTextColumn
CellContentStyle="{StaticResource CellContentStyle}"
HeaderStyle="{StaticResource ColumHeaderStyle}"
HeaderText="{x:Static strings:LabelResources.LabelContactId}"
PropertyName="ContactId"
SizeMode="Stretch" />
<telerik:DataGridTextColumn
CellContentStyle="{StaticResource CellContentStyle}"
HeaderStyle="{StaticResource ColumHeaderStyle}"
HeaderText="{x:Static strings:LabelResources.LabelMobyUser}"
SizeMode="Auto">
<telerik:DataGridTextColumn.CellContentTemplate>
<DataTemplate>
<Label
HorizontalOptions="Center"
Margin="0"
Padding="8,0,0,0"
Text="{Binding IsMobyUser, Converter={StaticResource BoolToString}, ConverterParameter='YesNo'}"
TextColor="Black"
VerticalOptions="Center" />
</DataTemplate>
</telerik:DataGridTextColumn.CellContentTemplate>
</telerik:DataGridTextColumn>
</telerik:RadDataGrid.Columns>
</telerik:RadDataGrid>
</Grid>
</telerik:RadBorder>
<HorizontalStackLayout
Grid.Row="1"
HorizontalOptions="End"
Margin="0,10,0,0"
VerticalOptions="End">
<telerik:RadButton
Command="{Binding CloseFindContactsResultsCommand}"
FontSize="14"
HeightRequest="40"
Text="{x:Static strings:LabelResources.LabelClose}"
WidthRequest="90" />
</HorizontalStackLayout>
</Grid>
</telerik:RadBorder>
I have attached two screenshots showing that they do work...
Like I said, when I downgraded to 5.1 it works. The popups worked just minutes prior to the upgrade to 6.0.0. Other popups do work which makes this even more mystifying... These two above do not work and I cannot put my finger on why. I NEED the rich text editor that is in the new package so I need to upgrade pronto!
Looking forward to your response!
Steve
1 answer
56 views
Hello there!
I would like to know how I can expand/collapse a single node in the treeview by code. Can anybody help me?
And also if there is a chance to get notified in case of expanse/collapse (OnExpand event)
thanks a lot
regards
Sven
Lance | Senior Manager Technical Support
Telerik team
answered
on
21 Jul 2023
1 answer
71 views
When using a CartesianGridLineAnnotation, if Value is not set, it causes an app crash. This does not happen on Android or Windows.
Code that crashes iOS app:
<telerik:RadCartesianChart x:Name="chart"
Grid.Row="0">
<telerik:RadCartesianChart.HorizontalAxis>
<telerik:NumericalAxis x:Name="xAxis" />
</telerik:RadCartesianChart.HorizontalAxis>
<telerik:RadCartesianChart.VerticalAxis>
<telerik:NumericalAxis x:Name="yAxis" />
</telerik:RadCartesianChart.VerticalAxis>
<telerik:RadCartesianChart.Series />
<telerik:RadCartesianChart.Annotations>
<telerik:CartesianGridLineAnnotation x:Name="marker"
Axis="{x:Reference xAxis}"/>
</telerik:RadCartesianChart.Annotations>
<telerik:RadCartesianChart.ChartBehaviors>
<telerik:ChartSelectionBehavior x:Name="selection"
DataPointSelectionMode="Single"
SelectionChanged="ChartSelectionBehavior_SelectionChanged" />
</telerik:RadCartesianChart.ChartBehaviors>
</telerik:RadCartesianChart>Work around, set Value to 0
<telerik:RadCartesianChart x:Name="chart"
Grid.Row="0">
<telerik:RadCartesianChart.HorizontalAxis>
<telerik:NumericalAxis x:Name="xAxis" />
</telerik:RadCartesianChart.HorizontalAxis>
<telerik:RadCartesianChart.VerticalAxis>
<telerik:NumericalAxis x:Name="yAxis" />
</telerik:RadCartesianChart.VerticalAxis>
<telerik:RadCartesianChart.Series />
<telerik:RadCartesianChart.Annotations>
<telerik:CartesianGridLineAnnotation x:Name="marker"
Axis="{x:Reference xAxis}"
Value="0"/>
</telerik:RadCartesianChart.Annotations>
<telerik:RadCartesianChart.ChartBehaviors>
<telerik:ChartSelectionBehavior x:Name="selection"
DataPointSelectionMode="Single"
SelectionChanged="ChartSelectionBehavior_SelectionChanged" />
</telerik:RadCartesianChart.ChartBehaviors>
</telerik:RadCartesianChart>
Lance | Senior Manager Technical Support
Telerik team
answered
on
20 Jul 2023
1 answer
67 views
In certain situations, the RadTabView cuts off part of the header text for some of the headers. A specific scenario where this is happening is when the following tabs are present:
- General
- Feed
- Users (0)
- Relationships (0)
- Tickets (0)
- Attachments (0)
The problem is worse when the BorderThickness of the TabViewHeaderItem is set to 1
Maria
Telerik team
answered
on
20 Jul 2023
1 answer
76 views
The chart background color defaults to white on ios, rather than transparent as it does on Android / Windows. Work around by setting the Background to your color of choice.
Lance | Senior Manager Technical Support
Telerik team
answered
on
20 Jul 2023
