DataSourceInfo.MaxLength returning nothing

[SaWu]

Hello

Please be so kind as to read my full post before responding.
Thank you for your consideration.

In my PowerApps retrieving MaxLength (for Text fields) via DataSourceInfo from Dynamics/CDS does not seem to be working anymore.
I only get empty results.
Last checked with
Session ID: cdc39558-0a90-4b1d-9849-3de65c7eef75
PowerApps 3.19061.14
Instance version 9.1.0.5426
Here two screenshots of a custom entity

Even with something like a standard User Entity I get nothing


How do I get MaxLength back?

Thank you,
    Sa Wu.

[v-yuxima-msft]

Hi @SaWu 

Thanks for your post.

The issue is reproduce on my side.

And I have submit this to my team.

Will update ASAP once get the reply.

Best Regards.

Yumia

[Rebetcha]

@v-yuxima-msft , any progress to report on this issue? I am delivering an app in a day and have multiple attendees with this issue. 

[Lars4]

What is the state of the feature switch "Improve data source experience and Common Data Service views" for your app?

What happens if you change it? In my experience it changes some MaxLength behavior.

[SaWu]

Hi @v-yuxima-msft 

Has there been an update on this?

Thank you,
    Sa.

---

@v-yuxima-msft wrote:

Hi @SaWu 

Thanks for your post.

The issue is reproduce on my side.

And I have submit this to my team.

Will update ASAP once get the reply.

Best Regards.

Yumia

---

[Rebetcha]

It was on.
It was during an App in day I presented at. This setting is by default nowadays for every new app.
Haven't tried it with the setting switched of though.

[SaWu]

Hello

The issue still persists:

Last tested with:
Session ID: bbdabe1a-6d36-4910-af9f-89ce0c7fd69c
PowerApps 3.19093.16

Thank you,
    Sa Wu.

[Lars4 · Accepted solution]

Is the switch "Improve data source experience and Common Data Service views" turned on or off? 

Do you see the same behavior if you create a new app from scratch? 

[SaWu]

Hi @Lars4 
Thanks, you were right that the "Improve Data Source experience and Commond Data Service Views" feature was the missing part.
With a fresh App this is on be default and it works.
In my orignal older App it isn't turned on and it doesn't work

Just out of curiosity I disabled the feature in my fresh App, after removing data sources, and added my data sources again.
Without this feature, in a fresh App, DataSourceInfo.MaxLength does not work.

Moreover, toggling this feature requires removal and re-adding all data sources, potentially breaking my App elsewhere in the meantime... not sure I'll go through that experience with hundreds of controls missing their data sources and the App Checker going haywire...


Thanks,
    Sa.

[SaWu · Accepted solution]

Hi

There also has been a fix rolled out sometime around December 4 (checked after info from MindTree support).
Now DataSourceInfo.MaxLength seems to work again irrespective of "Improve data source experience and Common Data Service views"

Thanks,
    Sa.