[DevExpress Support Team: CLONED FROM T505799: The "Cannot change property 'DefaultSorting' when the XPCollection is not in design or initialization mode." error occurs in MainDemo]
Hi,
I am experiencing this error in XAF Blazor project (20.1.4 - intermediate build). Not sure if it is a known issue and should I open separate ticket.
Same thing, I set data access to Server and I get this error when I try to open DetailView.
Regards,
Mario
Hello Mario,
Currently, Blazor applications use their own data sources and do not support the DataAccessMode option. Please set DataAccessMode to Client to resolve this issue.
Let me know if you need further assistance.
Ok, thanks, I have been doing that anyway and it will be fine for this project.
Regards,
Mario
Hello Anatol,
<<Currently, Blazor applications use their own data sources and do not support the DataAccessMode option.>>
Is this still true? I am getting same error with 20.2.4 version.
If the Blazor applications do not support the Server Mode, what is the preferred way to handle large datasets?
And when will it be supported? Do you have any plan?
Thanks.
Hello Akin,
Yes, this is still true.
Currently, Blazor does not allow you to select another data source mode. However, it uses paging for root views by default. If you have performance issues in List Views, please send us your profiling results: How to measure and improve application performance.
If the issue is in DetailView, please refer to the following ticket: Blazor - Performance - LookupPropertyEditor loads all records from its data source when a DetailView is shown.
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Hello Mario,
I tried to reproduce this issue with the current v20.1 build, but to no avail. Would you please send us a small sample project and detailed instructions on how to reproduce the issue?
Hi,
Finally I am working on a new project and sending a sample is an easy thing to do :-)
I created a ZIP from Microsoft Teams, hopefully everything is in there.
I changed Options a lot, just make sure that Options -> DataAccessMode in Model is set to Server before you try.
Application will take some time to startup, I fill a lot of initial data to Mjesto.cs.
After application starts it should focus on Vodič view, click New and the error is raised.
Regards,
Mario
Hi Mario,
Thank you for testing XAF Blazor. I reproduced this issue on my side. We will research this behavior and update this thread once we have any news.