When using a grid, with a binding for IsVisible inside of rotator templates, then the Syncfusion controls dont load.

Question

Hi,We have a Maui app that uses a SfRotator that loads the templates from xaml files.In one of these templates we have a grid around a few Syncfusion controls. This grid uses a binding for IsVisible. When you click the button to show the grid the Syncfusion controls dont render on Windows. This only happens on Windows and not Android.I have created a sample app for you. In the sample app I have this code inside the Wizard and also in a Menu page. It works perfectly fine in the menu page.Testing in the Menu page: (Success)Start the app and swap to Page 2. On Page 2 click "Add a Once Off Withdrawal" button. ﻿﻿The grid will load as expected with the Syncfusion controls inside. You can see in the image below what I mean. Testing in the Wizard: (Fail)Cli﻿﻿ck "Get Started" to go to the wizard. Go to template 3 with the white background color. Click on the "Add a once off withdrawal".The grid will be displayed and the Syncfusion controls wont load. You can compare this to the Menu Page and the screenshot I have included above.

If you change the binding of IsVisible inside of the template True instead of using a binding, then when you load the template everything loads correctly.I have attatched the project as a zip file.Can you please investigate and let me know if it is a bug or if there is a fix.Thanks,MarkAttachment: SyncfusionIsVisibleBug_62e66f9.7z

Aarthi Arjunan · Answer

Hi Mark,Currently we are
exploring the possibilities to fix this issue in sample level and will share the
details on or before July 12, 2024.  We
appreciate your understanding and patience until that time.Regards,Aarthi A.

Aarthi Arjunan · Answer

Hi Mark,Apologies for any inconvenience caused. We have reviewed
your query based on the provided information and have been able to reproduce
the reported issue "When using a grid,
with a binding for IsVisible inside of rotator templates, then the Syncfusion
controls dont load." at our end. We have logged a bug report for
this. You can track the status of the bug through the feedback link provided
below. Link: Bug
report 59484 We will share a
patch for the reported issue on July 26, 2024. We appreciate your patience
until then. Note: The provided feedback link is private,
and you need to log in to view this feedback.If you
have any more specifications or a scenario to be tested, you can
add them as a comment in the portal. Disclaimer: “Inclusion of this solution in
the weekly release may change due to other factors including but not limited to
QA checks and works reprioritization.”Regards,Aarthi A.

Hariharan Chokkalingam · Answer

Hi Mark,We have addressed the reported issue: "When using a grid with a binding for
IsVisible inside rotator templates, the Syncfusion controls don't load." Currently, we have created a custom patch for
version 26.2.5, and we have attached the NuGet files for your convenience.
Additionally, we have made some changes to your sample. Specifically, we
created an event in the Template3ViewModel and WizardViewModel classes to call
the SfRotator refresh method in Wizard.xaml.cs to refresh the rotator item.
Please refer to the attached custom package and updated sample for your
reference. Please note that we have created this patch for
version 26.2.5 specifically to resolve the issue reported in this ticket. If
you have received other patches for the same version for other products, please
apply all patches in the order received. Please clear the NuGet cache, before using the latest
one and please refer to the below link for thisHow to clear NuGet cache? Please refer to the below KB to install the custom
NuGet on a local machine,How to install the MAUI custom NuGet in the Windows
machine? Note: Before installing the Rotator
and other NuGet package, please install the provided custom patch after
clearing the cache.  This fix will be included in our weekly release
on August 06, 2024. We will notify you once NuGet is released and appreciate
your understanding and patience until that time. Disclaimer: The inclusion of this solution in the weekly
release may change due to other factors, including but not limited to QA checks
and work reprioritization. Root cause and resolution:Root Cause: The issue arises because the refresh
method is not handled correctly in Windows in the rotator.Resolution: We have resolved it by properly triggering
the refresh method. Regards,Hariharan C Attachment: Reference_150cc96d.zip

Mark · Answer

Hi,Thank you for your response. I have tested your sample project

Reference_150cc96d.zip with the supplied test Nuget package. This works.Unfortunately this will not work for us as we are using the Prism MVVM model. Can you please provide us with a sample with the refresh code in the View model and not the code behind file?I tested your sample with the refresh code removed and it unfortunately does not work. If we are to use the refresh code we will need a MVVM version.ThanksMark.

Aarthi Arjunan · Answer

Hi Mark, Currently, We are
trying the possibilities to call the SfRotator Refresh method in View model and
will share the details on or before August 03, 2024. We appreciate your
understanding and patience until that time. Regards,Aarthi A.

Aarthi Arjunan · Answer

Hi Mark,Thank you for your
feedback. We're glad the suggested solution worked for you. To access the
Refresh method in the ViewModel, you can pass the Template3View page as a
parameter to the button command. In the Template3ViewModel, you can then cast
the parameter and access the SfRotator's Refresh method.

<button:SfButton
    Text="Add a Once Off Withdrawal"
    IsVisible="{Binding
  HideAddAdHocWithdrawalButton, Converter={StaticResource
  InvertedBoolConverter}}"
    Style="{StaticResource
  MediumButtonStyle}"
    Command="{Binding
  AddAdHocWithdrawalCommand}"
    CommandParameter="{x:Reference Template3ViewXaml }"/>
   
  private void
  ExecuteAddAdHocWithdrawalCommand(object parameter)
   {
       SetupAdHocWithdrawal();
       HideAddAdHocWithdrawalButton = true;
       (((parameter as
  StackLayout).Parent as ContentPresenter).Parent as SfRotator).Refresh();
   
   }

For your reference,
we have updated the sample and provided a video for your convenience. Please
let us know if this solution addresses your issue. If you have any further
questions or concerns, don't hesitate to reach out to us.Regards,Aarthi A.Attachment: Reference_18eba29a.zip

Aarthi Arjunan · Answer

Hi Mark, We were unable to include the fix for
the issue "When using a grid with a
binding for IsVisible inside rotator templates, the Syncfusion controls don't
load" as promised in
the weekly release scheduled to be published tomorrow (06 August 2024). This
fix will be included in the next weekly release (13 August 2024). If you would like to verify the fix before the next
release, we can provide you with a custom patch. Please let us know if you are
interested. We apologize for any inconvenience this may have
caused and appreciate your understanding. Best regards,Aarthi A.

Mark · Answer

Hi,Thank you for your help with this. This is now resolved with your fix to pass in the page into the view model. I will add this to our app once the Nuget fix is officially released.Thank you for your great support.Mark.

Preethi Rajakandham · Answer

Hi Mark,You're welcome. Glad that the provided patch resolved the issue to pass in the page into the view model. As promised, the fix will be included in the next weekly release (13 August 2024).Regards,Preethi R

Aarthi Arjunan · Answer

Hi Mark, We have included the
fix for the reported issue "When using
a grid, with a binding for IsVisible inside of rotator templates, then the
Syncfusion controls dont load." in our latest weekly NuGet
release v26.2.9 which is available for download (NuGet). We thank you for your support and
appreciate your patience in waiting for this update. Please get in touch with
us if you require any further assistance. Regards,Aarthi A.