View source for HowTo:Convert Xamarin XAMLs to Maui

== Information ==
=== Frame to Border ===  
'''Use Border instead of Frame.'''  
Frame is deprecated in MAUI. Use Border with `Stroke` instead of `BorderColor`.

{| class="wikitable"
! Xamarin
! MAUI
|-
| <Frame ... />
| <Border ... />
|}

=== LayoutOptions with "...AndExpand" ===  
'''Replace "...AndExpand" with Grid layout.'''  
Horizontal/VerticalOptions ending in "...AndExpand" are deprecated. Use Grid with `ColumnDefinition Width="*"` for expansion.

=== GlyphLabel and Styles ===  
'''Use Label with new styles.'''  
Custom controls like `GlyphLabel` are no longer needed. Use `Label` with styles like `UBIKSymbolText`.

{| class="wikitable"
! Xamarin
! MAUI
|-
| controls:GlyphLabel
| Label with UBIKSymbolText style
|}

=== SfTabView Virtualization ===  
'''Enable virtualization.'''  
Add `EnableVirtualization="True"` to all SfTabView instances or styles.

=== Swipe Menu Icons on Android ===  
'''Refactor swipe templates and label styles.'''  
Icons in swipe menus were truncated on Android. Fixed via refactoring.

=== Color Style Changes ===  
'''Dark theme adjustments.'''  
Changes to color styles may affect appearance. Review usage of `UBIKDarkThemeColor`, `UBIKDarkTextColor`, etc.

=== Strikethrough Converter ===  
'''Use `TextDecorations="Strikethrough"` instead of converter.'''

{| class="wikitable"
! Xamarin
! MAUI
|-
| Text="{Binding ..., Converter={StaticResource StrikethroughConverter}}"
| Text="{Binding ...}" TextDecorations="Strikethrough"
|}

=== Button Disabled Trigger ===  
'''Add trigger for disabled buttons.'''  
Maui buttons don’t visually change when disabled. Add trigger to style.

=== TapGestureRecognizer Replacement ===  
'''Use TappedBehavior instead.'''  
TapGestureRecognizer now intercepts taps. Use `TappedBehavior` to avoid conflicts.

{| class="wikitable"
! Xamarin
! MAUI
|-
| <... .GestureRecognizers><TapGestureRecognizer Command="{Binding ...}" /></... .GestureRecognizers>
| <... .Behaviors><behaviors:TappedBehavior><behaviors:InvokeCommandAction Command="{Binding ...}" /></behaviors:TappedBehavior></... .Behaviors>
|}

=== TapGestureRecognizer and Swipe Conflict ===  
'''Remove TapGestureRecognizer from root Grid.'''  
TapGestureRecognizer blocks swipe behavior. Remove it and adapt parent list to trigger navigation.

=== Navigation in UBIKChildItem ===  
'''Use EventHandlerBehavior for navigation.'''

{| class="wikitable"
! Xamarin
! MAUI
|-
| [none]
| <controls:SfListViewExt.Behaviors><behaviors:EventHandlerBehavior EventName="ItemTapped"><behaviors:InvokeCommandAction Command="{Binding AppStatus.RootList.Items[0].NavigateToChildrenCommand}" /></behaviors:EventHandlerBehavior></controls:SfListViewExt.Behaviors>
|}
== Recommended ==
=== Extract DataTemplates from UBIKThemes ===
'''Create separate .xamlx files for the following DataTemplates.'''
It's not so easy about the namespaces:
* In our default templates, it's enough to add the following ones to every new separate .xamlx files at the beginning;
    * xmlns:ctrls="clr-namespace:UBIK.MAUI.Controls;assembly=UBIK.MAUI";
    * xmlns:platform="clr-namespace:UBIK.MAUI.Platform.Renderers;assembly=UBIK.MAUI";
    * xmlns:resources="clr-namespace:UBIK.MAUI.Resources;assembly=UBIK.MAUI";
    * xmlns:services="clr-namespace:UBIK.MAUI.Services;assembly=UBIK.MAUI";
    * xmlns:uiservices="clr-namespace:UBIK.UI.Services;assembly=UBIK.UI".
* But we don't know if other namespaces might be used in the custom templates. So it might be necessary to really analyze the namespaces used and find/copy them from the UBIKThemes file.
{| class="wikitable"
! &nbsp; !! Templates !! &nbsp;
|-
| UBIKMainItem || UBIKChildItem || UBIKTaskItem
|-
| UBIKTaskProperty || UBIKTaskPropertyString || UBIKTaskPropertyDouble
|-
| UBIKTaskPropertyInt || UBIKTaskPropertyNumeric || UBIKTaskPropertyDateTime
|-
| UBIKTaskPropertyGeoData || UBIKTaskPropertyBool || UBIKTaskPropertyPopup
|-
| UBIKTaskPropertyList || UBIKTaskPropertyGuid || UBIKPropertyItem
|-
| UBIKPropertyTextLengthHint || UBIKPropertyDirectEditButtons || UBIKTaskPropertyEditButtons
|-
| UBIKPropertyDirectItemString || UBIKPropertyDirectItemDouble || UBIKPropertyDirectItemInt
|-
| UBIKPropertyDirectItemMinMax || UBIKPropertyDirectItemNumeric || UBIKPropertyDirectItemDateTime
|-
| UBIKPropertyDirectItemGeoData || UBIKPropertyDirectItemBool || UBIKPropertyDirectItemPopup
|-
| UBIKPropertyDirectItemList || UBIKPropertyDirectItemGuid || UBIKDocumentItem
|-
| UBIKSearchResultItem || UBIKDefaultHotSpot || UBIKAngularLinkHotSpot
|-
| UBIKRoundLinkHotSpot || UBIKInputHotSpot || UBIKSignatureHotSpot
|-
| UBIKObjectHotSpot || UBIKMediaHotSpot || 
|}
=== VideoPlayer Adjustments ===
'''This property is repsonsible for the video player regarding how or if it should get scaled up depending on the value of the
Aspect property'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">VideoPlayer...</syntaxhighlight>
| <syntaxhighlight lang="xml">VideoPlayer Aspect="AspectFit"</syntaxhighlight>
|}

'''The UriToVideoSourceConverter is no longer needed because the conversion of the 
VideoSource gets done by the MediaElement itself. It is marked as obsolete and should therefore no longer be used.'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml"><controls:VideoPlayer... Source="{Binding DocumentViewModel.LocalURI, Converter={StaticResource UriToVideoSource}}"/></syntaxhighlight>
| <syntaxhighlight lang="xml"><controls:VideoPlayer... Source="{Binding DocumentViewModel.LocalURI}"/></syntaxhighlight>
|}

'''The StopTimer property is obsolete and no longer needed because the MediaElement behind does the Stop of the VideoPlayer
by itself.'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml"><controls:VideoPlayer... StopTimer="{Binding Unloaded}" /></syntaxhighlight>
| <syntaxhighlight lang="xml"><controls:VideoPlayer... /></syntaxhighlight>
|}
=== SearchBar Style Fix on iOS ===
'''On iOS, defining a transparent background for the SearchBar control results in a black text on black background appearance.'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">[issue on iOS only] UBIKThemes: SearchBar style: <Setter Property="BackgroundColor" Value="Transparent" /></syntaxhighlight>
| <syntaxhighlight lang="xml">Delete this setter</syntaxhighlight>
|}
=== Avoid Redundant ControlTemplate in DataTriggers ===
'''This is about finding ControlTemplates that are set in DataTriggers in customized Xamls. When the same template is already set as a ContentView default ControlTemplate, it is recommended to remove the default ControlTemplate on the ContentView. For a detailed description please refer to sheet "Mandatory" in cell 27A-27C.
Behavior that might occur if it remains unchanged: Property editor might not open on Android.'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml"><ContentView x:Name="containerName" ControlTemplate="{StaticResource YourTemplate1}">
    <ContentView.Triggers>
        <DataTrigger
            Binding="{Binding Source={x:Reference containerName}, Path=...}"
            TargetType="ContentView"
            Value="true">
            <Setter Property="ControlTemplate"
                    Value="{StaticResource YourTemplate1}" />
        </DataTrigger>
        ...
    </ContentView.Triggers>
</ContentView></syntaxhighlight>
| <syntaxhighlight lang="xml"><ContentView x:Name="containerName">
    <ContentView.Triggers>
        <DataTrigger
            Binding="{Binding Source={x:Reference containerName}, Path=...}"
            TargetType="ContentView"
            Value="true">
            <Setter Property="ControlTemplate"
                    Value="{StaticResource YourTemplate1}" />
        </DataTrigger>
        ...
    </ContentView.Triggers>
</ContentView></syntaxhighlight>
|}
=== Replace TemplateBinding with Binding and Source ===
'''This is about finding SfListViewExt controls in customizings, and if there are TemplateBindings used, it's recommended to replace them with Binding, and the Source reference should be added. For a detailed description please refer to sheet "Mandatory" in cell 26A-26C.
Behavior that might occur if it remains unchanged: Pre-selected item might appear unselected.'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml"><ContentView
   ...
   x:Name="YourContentViewName">

   <ContentView.Resources>
      <ResourceDictionary>
         ...
         <ControlTemplate x:Key="YourTemplateKey">
             <ctrls:SfListViewExt
                 ItemsSource="{TemplateBinding BindingContext.YourBinding,
                              ...}"
                 SelectedItem="{TemplateBinding BindingContext.YourBinding,
                              ...}"
             ... />
         </ControlTemplate>
         ...
      </ResourceDictionary>
   </ContentView.Resources>

   ...
</ContentView></syntaxhighlight>
| <syntaxhighlight lang="xml"><ContentView
   ...
   x:Name="YourContentViewName">

   <ContentView.Resources>
      <ResourceDictionary>
         ...
         <ControlTemplate x:Key="YourTemplateKey">
             <ctrls:SfListViewExt
                 ItemsSource="{Binding BindingContext.YourBinding,
                                       Source={x:Reference YourContentViewName},
                                       ...}"
                 SelectedItem="{Binding BindingContext.YourBinding,
                                        Source={x:Reference YourContentViewName},
                                        ...}"
             ... />
         </ControlTemplate>
         ...
      </ResourceDictionary>
   </ContentView.Resources>

   ...
</ContentView></syntaxhighlight>
|}
=== Remove TapGestureRecognizer from Main Item ===
'''Swiping on the Main items was broken by Maui (Documented in Information). The workaround is to remove the TapGestureRecognizer from UBIKMainItem, and add ListView-based navigation similar to that found in UBIKChildArea (with an extended binding path for technical reasons).'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">(In UBIKMainItem)
<Grid.GestureRecognizers>
	<TapGestureRecognizer Command="{Binding NavigateToChildrenCommand}" />
</Grid.GestureRecognizers></syntaxhighlight>
| <syntaxhighlight lang="xml">[nothing]</syntaxhighlight>
|}
=== Add Navigation Behavior in Child Area ===
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">(In UBIKChildArea)
[nothing]</syntaxhighlight>
| <syntaxhighlight lang="xml"><controls:SfListViewExt.Behaviors>
	<behaviors:EventHandlerBehavior EventName="ItemTapped">
		<behaviors:InvokeCommandAction Command="{Binding AppStatus.RootList.Items[0].NavigateToChildrenCommand}" />
	</behaviors:EventHandlerBehavior>
</controls:SfListViewExt.Behaviors></syntaxhighlight>
|}
== Highly Recommended ==
=== CircularImage to AvatarView ===  
'''Use AvatarView instead of CircularImage.'''  
CircularImage and its wrapping Frame are no longer needed. Use AvatarView from the MAUI Community Toolkit. Add the namespace:
<syntaxhighlight lang="xml">
xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
</syntaxhighlight>

{| class="wikitable"
! Xamarin
! MAUI
|-
| <Frame><CircularImage Source="..." /></Frame>
| <toolkit:AvatarView ImageSource="..." BorderWidth="..." BackgroundColor="..." />
|}

=== GlyphSize to FontSize and Alignment ===  
'''Use FontSize and alignment properties instead of GlyphSize.'''  
The GlyphSize property is obsolete. Use FontSize and add alignment properties for better layout.

{| class="wikitable"
! Xamarin
! MAUI
|-
| <Setter Property="GlyphSize" Value="13.0" />
| <Setter Property="FontSize" Value="16" /><br/><Setter Property="VerticalOptions" Value="Center" /><br/><Setter Property="HorizontalOptions" Value="Center" /><br/><Setter Property="VerticalTextAlignment" Value="Center" /><br/><Setter Property="HorizontalTextAlignment" Value="Center" />
|}

=== StaticResource to DynamicResource ===  
'''Use DynamicResource and BaseResourceKey.'''  
For dynamic theming, use DynamicResource instead of StaticResource. When inheriting styles, use BaseResourceKey.

{| class="wikitable"
! Xamarin
! MAUI
|-
| BasedOn="{StaticResource SomeStyle}"<br/>Style="{StaticResource SomeStyle}"
| BaseResourceKey="SomeStyle"<br/>Style="{DynamicResource SomeStyle}"
|}
== Mandatory ==

=== Namespace conversion ===  
'''Update all namespaces to MAUI equivalents.'''  
All `xmlns` and `clr-namespace` declarations must be updated to their MAUI counterparts.

{| class="wikitable"
! Xamarin
! MAUI
|-
| xmlns="http://xamarin.com/schemas/2014/forms"
| xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
|-
| clr-namespace:Xamarin.Forms.PlatformConfiguration.AndroidSpecific;assembly=Xamarin.Forms.Core
| clr-namespace:Microsoft.Maui.Controls.PlatformConfiguration.AndroidSpecific;assembly=Microsoft.Maui.Controls
|-
| clr-namespace:UBIK.CPL.Behaviors;assembly=UBIK.CPL
| clr-namespace:UBIK.MAUI.Behaviors;assembly=UBIK.MAUI
|-
| clr-namespace:UBIK.CPL.Classes;assembly=UBIK.CPL
| clr-namespace:UBIK.MAUI.Classes;assembly=UBIK.MAUI
|-
| clr-namespace:UBIK.CPL.Controls;assembly=UBIK.CPL
| clr-namespace:UBIK.MAUI.Controls;assembly=UBIK.MAUI
|-
| clr-namespace:UBIK.CPL.Converters;assembly=UBIK.CPL
| clr-namespace:UBIK.MAUI.Converters;assembly=UBIK.MAUI
|-
| clr-namespace:UBIK.CPL.Platform.Renderers;assembly=UBIK.CPL
| clr-namespace:UBIK.MAUI.Platform.Controls;assembly=UBIK.MAUI
|-
| clr-namespace:UBIK.CPL.Services;assembly=UBIK.CPL
| clr-namespace:UBIK.MAUI.Services;assembly=UBIK.MAUI
|-
| clr-namespace:UBIK.CPL.Resources;assembly=UBIK.CPL
| clr-namespace:UBIK.MAUI.Resources;assembly=UBIK.MAUI
|-
| clr-namespace:UBIK.Scanning.Forms;assembly=UBIK.Scanning.Forms
| clr-namespace:UBIK.MAUI.Controls.ZXingScanner;assembly=UBIK.MAUI
|-
| clr-namespace:Syncfusion.SfPullToRefresh.XForms;assembly=Syncfusion.SfPullToRefresh.XForms
| clr-namespace:Syncfusion.Maui.Toolkit.PullToRefresh;assembly=Syncfusion.Maui.Toolkit
|-
| clr-namespace:Syncfusion.XForms.TabView;assembly=Syncfusion.SfTabView.Xforms
| clr-namespace:Syncfusion.Maui.Toolkit.TabView;assembly=Syncfusion.Maui.Toolkit
|-
| clr-namespace:Syncfusion.ListView.XForms;assembly=Syncfusion.SfListView.XForms
| clr-namespace:Syncfusion.Maui.ListView;assembly=Syncfusion.Maui.ListView
|-
| clr-namespace:Syncfusion.XForms.TreeView;assembly=Syncfusion.SfTreeView.XForms
| clr-namespace:Syncfusion.Maui.TreeView;assembly=Syncfusion.Maui.TreeView
|-
| clr-namespace:Syncfusion.XForms.TextInputLayout;assembly=Syncfusion.Core.XForms
| clr-namespace:Syncfusion.Maui.Core;assembly=Syncfusion.Maui.Core
|}

For classes referenced in the XAML code, please don't forget to also replace "CPL" with "MAUI" in the class namespace.





=== Syncfusion control updates ===
'''There are some other properties that have changed their names on SfListView/SfListViewExt. We don't use them in our standard XAMLs. But if you use them in customizings, please refer to https://help.syncfusion.com/maui/listview/migration for the complete list.'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">
SfListViewExt:
    * ItemHolding
</syntaxhighlight>
| ItemLongPress
|}

=== Syncfusion control updates ===
{| class="wikitable"
! Xamarin
! MAUI
|-
| * LeftSwipeTemplate, RightSwipeTemplate
| StartSwipeTemplate, EndSwipeTemplate
|}

=== Layout name change ===
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">
* <sync:SfListView.LayoutManager>
</syntaxhighlight>
| <syntaxhighlight lang="xml">
<sync:SfListView.ItemsLayout>
</syntaxhighlight>
|}

=== TemplateService binding for extracted templates ===
'''1. We need to add the following namespace where the changes are applied:
xmlns:services="clr-namespace:UBIK.MAUI.Services;assembly=UBIK.MAUI";
2. We need to search for both "StaticResource" and "DynamicResource";
3. We only listed some examples here. But the same rule applies to all those templates exacted from UBIKThemes (see the first "Recommended" point).'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| {StaticResource UBIKChildItem}
| {Binding [UBIKChildItem], Source={x:Static services:TemplateService.Instance}}
|-
| {StaticResource UBIKDocumentItem}
| {Binding [UBIKDocumentItem], Source={x:Static services:TemplateService.Instance}}
|-
| {StaticResource UBIKMainItem}
| {Binding [UBIKMainItem], Source={x:Static services:TemplateService.Instance}}
|}

=== OnPlatform and OnIdiom syntax changes ===
'''All code containing the OnPlatform and OnIdiom functionalities needs to be refactored as the syntax changed. It is recommended to use the inline syntax (see example) as a default wherever possible, but there are also other approaches.
When using Bindings, Resources or other complex values in OnIdiom or OnPlatform values, it should only be used with the inline syntax.
Please rely to the wiki for more details and possibilities (e.g. if the value contains multiple elements): https://wiki.augmensys.com/index.php?title=XAML_Tips#Platform_and_Device-specific_UI_with_OnPlatform_and_OnIdiom'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| OnPlatform
| <syntaxhighlight lang="xml">
<TheControl
        ...
        TheProperty="{OnPlatform Android=False, iOS=True}" />

<TheControl
     ...
     TheProperty="{OnPlatform Android={Binding ...}, iOS={Binding ...}}" />
</syntaxhighlight>

|-
| OnIdiom
| <syntaxhighlight lang="xml">
<TheControl
        ...
        TheProperty="{OnIdiom Phone=False, Desktop=True}" />

<TheControl
     ...
     TheProperty="{OnIdiom Desktop={Binding ...}, Phone={Binding ...}}" />
</syntaxhighlight>
|-
| WinPhone
| WinUI
|-
| <syntaxhighlight lang="xml">
e.g.
<ColumnDefinition.Width>
   <OnIdiom
        ...
        Desktop="Auto"
        Phone="*" />
</ColumnDefinition.Width>
or
<RowDefinition.Height>
   <OnPlatform
        ...
        Android="Auto"
        iOS="*" />
</RowDefinition.Height>
</syntaxhighlight>
| <syntaxhighlight lang="xml">
<ColumnDefinition Width="{OnIdiom Desktop='Auto', Phone='*'}" />

<RowDefinition Height="{OnPlatform Android='Auto', iOS='*'}" />
</syntaxhighlight>
|}

=== Syncfusion control updates ===
'''It is necessary to use the default Binding with the Source reference to the parent control instead of TemplateBinding when using a SfListViewExt ControlTemplate with selectable items in the ResourceDictionary to be set in the ContentView DataTrigger. Otherwise, the pre-selected items might not appear selected anymore according to our experience.

Affected standard Xamls are:
- UBIKEditDouble
- UBIKEditInt
- UBIKEditString
- UBIKEditMinMax
(For the exact syntax please refer to our latest standard Xamls.)

If the above explained is also used in any custom Xamls, please consider changing it there, too.

However, the problem only seems to occur if there is TemplateBinding in the ItemsSource & SelectedItem property. But, for example, if the TemplateBinding is only in the BindingContext property of the SfListViewExt (like it is the case in the UBIKPropertyDirectEditListPopup), there seems to be no such problem and therefore no change is necessary.'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">
<ContentView
   ...
   x:Name="YourContentViewName">

   <ContentView.Resources>
      <ResourceDictionary>
         ...
         <ControlTemplate x:Key="YourTemplateKey">
             <ctrls:SfListViewExt
                 ItemsSource="{TemplateBinding BindingContext.YourBinding,
                              ...}"
                 SelectedItem="{TemplateBinding BindingContext.YourBinding,
                              ...}"
             ... />
         </ControlTemplate>
         ...
      </ResourceDictionary>
   </ContentView.Resources>

   ...
</ContentView>
</syntaxhighlight>
| <syntaxhighlight lang="xml">
<ContentView
   ...
   x:Name="YourContentViewName">

   <ContentView.Resources>
      <ResourceDictionary>
         ...
         <ControlTemplate x:Key="YourTemplateKey">
             <ctrls:SfListViewExt
                 ItemsSource="{Binding BindingContext.YourBinding,
                                       Source={x:Reference YourContentViewName},
                                       ...}"
                 SelectedItem="{Binding BindingContext.YourBinding,
                                        Source={x:Reference YourContentViewName},
                                        ...}"
             ... />
         </ControlTemplate>
         ...
      </ResourceDictionary>
   </ContentView.Resources>

   ...
</ContentView>
</syntaxhighlight>
|}

=== Remove default ControlTemplate in DataTriggers ===
'''To prevent an issue on Android where the direct edit Link to Object editor does not open, there is a change necessary in the UBIKPropertyDirectEditListPopup Xaml:
The default ControlTemplate needs to be removed from the ContentView that contains the DataTriggers.

According to our experience, this issue only occurs to our UBIKPropertyDirectEditListPopup standard Xaml, but we can't guarantee that there is no such issue in customized Xamls.
So please, if you encounter an issue on Android where a Property Editor doesn't open, report it the mobile development team, and/or try removing the default ControlTemplate from the affected control.

In our standard Xamls, we removed the default ControlTemplate in every ContentView that contains DataTriggers with ControlTemplates where the same template is already set in a DataTrigger. So please, also remove the default ControlTemplates it in the following Xamls if you use customized ones:
- UBIKEditDouble
- UBIKEditInt
- UBIKEditString
- UBIKEditMinMax
(For the exact syntax please refer to our latest standard Xamls.)

If the above explained is also used in any of your other custom Xamls, please consider changing it there, too. Otherwise, some property editor might not open.'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">
<ContentView x:Name="containerName" ControlTemplate="{StaticResource YourTemplate}">
    <ContentView.Triggers>
        <DataTrigger
            Binding="{Binding Source={x:Reference containerName}, Path=...}"
            TargetType="ContentView"
            Value="true">
            <Setter Property="ControlTemplate"
                    Value="{StaticResource YourTemplate}" />
        </DataTrigger>
        ...
    </ContentView.Triggers>
</ContentView>
</syntaxhighlight>
| <syntaxhighlight lang="xml">
<ContentView x:Name="containerName">
    <ContentView.Triggers>
        <DataTrigger
            Binding="{Binding Source={x:Reference containerName}, Path=...}"
            TargetType="ContentView"
            Value="true">
            <Setter Property="ControlTemplate"
                    Value="{StaticResource YourTemplate}" />
        </DataTrigger>
        ...
    </ContentView.Triggers>
</ContentView>
</syntaxhighlight>
|}

=== Remove HeadlessLayout style ===
'''This Style has no longer any effect in MAUI and even degrades app performance. We are keeping it in our standard UBIKThemes under the Obsolete section to maintain backward compatibility.'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">
<Style x:Key="HeadlessLayout" TargetType="Layout">
            <Setter Property="CompressedLayout.IsHeadless" Value="{OnPlatform False, Android=True}" />
</Style>
</syntaxhighlight>
| Delete it from your custom UBIKThemes file
|}

=== Additional mandatory rule ===
'''In the customizings, however, it can and should be removed entirely, as it negatively affects performance, as mentioned before. To remove the style, you can simply use VS Code or any other editor with a search function and look through all custom .xaml files for usages of {StaticResource HeadlessLayout} or {DynamicResource HeadlessLayout}. These references should be removed from the respective elements or controls.'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">
<ContentView
    Grid.Column="2"
    ControlTemplate="{DynamicResource ChildCountBadge}"
    HorizontalOptions="Start"
    Style="{DynamicResource HeadlessLayout}"
    VerticalOptions="Start" />
</syntaxhighlight>
| <syntaxhighlight lang="xml">
<ContentView
    Grid.Column="2"
    ControlTemplate="{DynamicResource ChildCountBadge}"
    HorizontalOptions="Start"
    VerticalOptions="Start" />
</syntaxhighlight>
|}

{{UnderConstructionStart}}
=== Avoid multiple SfPullToRefresh controls ===
'''To prevent an issue that causes the app to freeze, avoid placing more then one SfPullToRefresh controls as siblings in a xaml hierarchy'''. If switching between contents in a SfPullToRefresh control is necessary use separate DataTemplates for the contents and use a e.g. a DataTrigger to set one of them as the ControlTemplate of a ContentControl inside the SfPullToRefresh control

{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">
<pullToRefresh:SfPullToRefresh IsVisible = {Binding ShowContentB, Converter={StaticResource BoolToNotBool}}>
    <pullToRefresh:SfPullToRefresh.PullableContent>
        <Grid x:Name="ContentA"/>
    </pullToRefresh:SfPullToRefresh.PullableContent>
</pullToRefresh:SfPullToRefresh>

<pullToRefresh:SfPullToRefresh  IsVisible = {Binding ShowContentB}>
    <pullToRefresh:SfPullToRefresh.PullableContent>
        <Grid x:Name="ContentB"/>
    </pullToRefresh:SfPullToRefresh.PullableContent>
</pullToRefresh:SfPullToRefresh>
</syntaxhighlight>
| <syntaxhighlight lang="xml">
<pullToRefresh:SfPullToRefresh>
    <pullToRefresh:SfPullToRefresh.PullableContent>
        <controls:ContentControl ContentTemplate="{DynamicResource TemplateA}">
            <controls:ContentControl.Triggers>
                <DataTrigger
                    Binding="{Binding UseTemplateB}}"
                    TargetType="controls:ContentControl"
                    Value="true">
                    <Setter Property="ContentTemplate" Value="{DynamicResource TemplateB}" />
                </DataTrigger>
            </controls:ContentControl.Triggers>
        </controls:ContentControl>
    </pullToRefresh:SfPullToRefresh.PullableContent>
</pullToRefresh:SfPullToRefresh>
</syntaxhighlight>
|}
{{UnderConstructionEnd}}

[[Category:How-To|Convert Xamarin XAMLs to Maui]]
[[Category:MAUI|Convert Xamarin XAMLs to Maui]]
[[Category:XAML|Convert Xamarin XAMLs to Maui]]

=== Rename SfPullToRefresh properties ===
'''Renamed in Maui, however, currently these properties cause an issue and should not be included in customizings.'''
SfPullToRefresh:
{| class="wikitable"
! Xamarin
! MAUI
|-
| RefreshContentHeight, RefreshContentWidth
| RefreshViewHeight, RefreshViewWidth
|}

=== Rename progress colors ===
'''Renamed in Maui.'''
{| class="wikitable"
! Xamarin
! MAUI
|-
| ProgressBackgroundColor, ProgressStrokeColor
| ProgressBackground, ProgressColor
|}

[[Category:How-To|Convert Xamarin XAMLs to Maui]]
[[Category:MAUI|Convert Xamarin XAMLs to Maui]]
[[Category:XAML|Convert Xamarin XAMLs to Maui]]

== SfTabView ==

=== Namespace Update ===
'''Update Syncfusion TabView namespace.'''
Replace the Xamarin namespace with the MAUI equivalent.

{| class="wikitable"
! Xamarin
! MAUI
|-
| clr-namespace:Syncfusion.XForms.TabView;assembly=Syncfusion.SfTabView.XForms
| clr-namespace:Syncfusion.Maui.Toolkit.TabView;assembly=Syncfusion.Maui.Toolkit
|}

=== Remove Obsolete Converters ===
'''Remove ItemCountToBoolConverter from Resources.'''
This converter is no longer usable in TabView headers.

{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml"><converters:ItemCountToBoolConverter x:Key="ItemCountToBool" /></syntaxhighlight>
| [remove]
|}

=== Add StringFormatConverter ===
'''Use StringFormatConverter for combined header strings.'''
Syncfusion MAUI TabView uses a single `Header` property instead of templates.
For all tab headers, formatters should be specified to assemble the text. As a best practice, even for simple header strings.

{| class="wikitable"
! Xamarin
! MAUI
|-
| [template-based header]
| <syntaxhighlight lang="xml"><converters:StringFormatConverter x:Key="ChildrenTabFormatter" Parameter1="{resources:Translate ChildrenTitle}" /></syntaxhighlight>
|}

In the above example, a previously defined formatter (that must be also added to the resource dictionary) is used to fill in the header attribute value.
⚠️ Avoid using bindings in `Parameter1` and `Parameter2` — use static strings only. For complex cases, use `EvalExpression`.

[[Category:How-To|Convert Xamarin XAMLs to Maui]]
[[Category:MAUI|Convert Xamarin XAMLs to Maui]]
[[Category:XAML|Convert Xamarin XAMLs to Maui]]

=== FontImageSource Styling ===
'''Add local style for FontImageSource.'''
Global styles are not supported.

{| class="wikitable"
! Xamarin
! MAUI
|-
| [global FontImageSource style]
| <syntaxhighlight lang="xml">
<Style TargetType="FontImageSource">
  <Setter Property="FontFamily" Value="{DynamicResource UBIKSymbols}" />
  <Setter Property="Color" Value="{DynamicResource UBIKLightThemeColor}" />
</Style>
</syntaxhighlight>
|}

=== TabView Structure ===
'''Use Grid to wrap TabView.'''
MAUI TabView requires a different structure and property set.

{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">
<tabView:SfTabView VisibleHeaderCount="3">
  ...
</tabView:SfTabView>
</syntaxhighlight>
| <syntaxhighlight lang="xml">
<Grid>
  <tabView:SfTabView>
    <tabView:SfTabItem Header="string example header">
      <tabView:SfTabItem.ImageSource>
        <FontImageSource Glyph="{x:Static resources:UBIKIcons.XXX}" />
      </tabView:SfTabItem.ImageSource>
      <tabView:SfTabItem.Content>
        <controls:UBIKContentView x:Name="ChildContainer" Converter="{StaticResource ChildAreaTemplateConverter}" />
      </tabView:SfTabItem.Content>
    </tabView:SfTabItem>
  </tabView:SfTabView>
</Grid>
</syntaxhighlight>
|}

=== Property Changes ===
'''Update renamed or removed properties.'''

{| class="wikitable"
! Xamarin
! MAUI
|-
| VisibleHeaderCount
| [not available yet]
|-
| UBIKCenterButtonSettings
| CenterButtonSettings
|-
| SelectionIndicatorSettings
| IndicatorPlacement, IndicatorStrokeThickness, IndicatorBackground
|-
| SelectionColor
| Use VisualStateManager instead
|}

⚠️ Refer to [https://help.syncfusion.com/maui/tabview/migration Syncfusion migration guide] for full property list.

== OnPlatform + OnIdiom backup ==

=== Syntax Changes ===
'''Use inline or multi-tag syntax.'''
Single-tag syntax is outdated and may not build.

{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml"><OnPlatform Android="False" iOS="True" /></syntaxhighlight>
| <syntaxhighlight lang="xml"><TheControl TheProperty="{OnPlatform Android=False, iOS=True}" /></syntaxhighlight>
|}

{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">
<OnPlatform x:TypeArguments="TheType">
  <On Platform="Android" Value="False" />
  <On Platform="iOS" Value="True" />
</OnPlatform>
</syntaxhighlight>
| Required for multi-tag syntax
|}

=== WinPhone to WinUI ===
'''Replace WinPhone with WinUI.'''

{| class="wikitable"
! Xamarin
! MAUI
|-
| WinPhone
| WinUI
|}

=== GridLength and TypeArguments ===
'''Avoid x:TypeArguments with GridLength.'''

{| class="wikitable"
! Xamarin
! MAUI
|-
| <syntaxhighlight lang="xml">
<ColumnDefinition.Width>
  <OnIdiom x:TypeArguments="GridLength" Desktop="Auto" Phone="*" />
</ColumnDefinition.Width>
</syntaxhighlight>
| <syntaxhighlight lang="xml"><ColumnDefinition Width="{OnIdiom Desktop='Auto', Phone='*'}" /></syntaxhighlight>
|}

⚠️ Inline syntax is more reliable when using bindings or resources.

=== Special Characters ===
'''Wrap values in quotes if they contain commas or strings.'''

{| class="wikitable"
! Xamarin
! MAUI
|-
| Margin={OnIdiom 10,2, Phone=2,0}
| Margin={OnIdiom '10,2', Phone='2,0'}
|}

=== UWP to WinUI ===
'''Replace UWP with WinUI in all OnPlatform scopes.'''

{| class="wikitable"
! Xamarin
! MAUI
|-
| UWP
| WinUI
|}

⚠️ For more details, refer to the [https://wiki.augmensys.com/index.php?title=XAML_Tips#Device_and_Platform_Responsiveness Wiki documentation].

[[Category:How-To|Convert Xamarin XAMLs to Maui]]
[[Category:MAUI|Convert Xamarin XAMLs to Maui]]
[[Category:XAML|Convert Xamarin XAMLs to Maui]]