'Add custom dynamic entity data source' example under Layers not working for WPF application about arcgis-maps-sdk-dotnet-samples

[tejabalu]

Hi!

Thanks for your response! I've found a fix for this and raised a PR here!

1. Yes. I'm also seeing the same behavior in the WinUI project. The same sample does not exist for other frameworks like Maui.
2. I'm seeing the same behavior in the app downloaded from the Microsoft Store and in the cloned repository.
3. Debug | Any CPU
4. I've actually tested this on 2 machines with the same behavior. The machines have Windows 11 and Windows 11 Arm respectively.

The issue was that the offline file name in the code did not match the actual file name being downloaded from the resource in the link. The name of the file in the resource link is AIS_MarineCadastre_SelectedVessels_CustomDataSource.jsonl, whereas the code has the file name as AIS_MarineCadastre_SelectedVessels_CustomDataSource.json, with the wrong file extension.

It's interesting that you are not seeing this behavior on your machine. My hypothesis would be that the link initially hosted the file name with the json extension, which was later changed to the jsonl. You might have had the file downloaded before this change was made, and the app was not redownloading the file. Could you please check what file you currently have on your PC, and if deleting it and prompting the app to redownload the file reproduces this behavior? The file is located at C:\Users\{UserName}\AppData\Local\ArcGISSampleData\a8a942c228af4fac96baa78ad60f511f if it makes it easier.

I'm happy to make any modifications to the PR if required!

P.S.: Sorry about my delayed response, I had limited access to my machine.

[williambohrmann3]

@tejabalu thank you for the detailed response and triage! I am now able to reproduce on all platforms. Just so you know, we do offer this sample in .NET MAUI. Looking at the PR now.

[williambohrmann3]

Hey @tejabalu thanks for checking offline files were downloaded. I'm unable to reproduce this on my Windows 10 PC when testing WPF .NET 6 and .NET Framework solutions. Note that there is limited data with the simulated data source - the data will only display for only a few minutes since we don't loop the data again. But it sounds like no data at all is displaying for you. Would you kindly answer the following?

1. Are you seeing this behavior in both WPF projects?
2. Did you deploy the sample viewer app from the Microsoft Store or did you clone the repo?
3. If cloned, what configuration? e.g., Debug | x64
4. What version of Windows are you on?

[tejabalu]

Nice, I updated the PR with the change for Maui too!

[williambohrmann3]

Fixed by @tejabalu