cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
nybjkj
Regular Visitor

Gallery showing the wrong images from a SQL Server column

I have a simple Azure SQL table that includes an image column.  A gallery is bound to the table, and one of the gallery template items is a media control, bound to the image column.  This always displays the correct image when the column is popultaed, but when null, the gallery doesn't always display a blank image - it often (especially after scrolling or refreshing) displays images from other table rows - seemingly randomly.  I even tried changing the Media.Image value to be..

 

If(IsBlank(ThisItem.Image),Blank(),ThisItem.Image) 

 

... in a vain attempt to 'force the issue', but it makes no difference - it never considers the value of ThisItem.Image to be Null, even though I can clearly see the nulls in the database.

 

Any ideas or help gratefully received!

 

 

1 ACCEPTED SOLUTION

Accepted Solutions

That's some great investigation there @wyotim! Thanks for sharing your results.

It's interesting how the unqiue identifiers are random when you use a view. I reckon that could be the cause of the bug.  Perhaps PowerApps is re-allocating those row ids to ones that have been used before when you scroll, refresh, or carry out some other action.

It's very useful to know that it applies to views only.

 

View solution in original post

8 REPLIES 8
wyotim
Resident Rockstar
Resident Rockstar

I was encountering the same issue and had to resort to a workaround. An interesting thing I found is that there doesn't seem to be a good way to test for whether there is an image or not because every row of the image column returns a value whether it has an image or not. You can see this value by placing ThisItem.Image in a text label in your gallery.

 

What I had to do was put a boolean (bit) field in my table (which I titled HasPicture), defaulted to false (0), then check for that value instead of checking for a picture. This worked out okay in my case but I can't imagine it is the best way to handle things in all cases. When a user submits a picture you could then update HasPicture to true. 

 

As I said, this worked okay for me but, in general, it seems there has to be a more elegant way!

 

@timl or @ericonline do either of you have any experience with this that you could share?

Thanks wyotim - yes, good idea, and easier for me because in fact I am already using a view rather than a table (I simplified my original post).

 

Would still be interested in what is happening here 'under the bonnet' if anyone knows...

 

Thanks for your speedy response.

v-xida-msft
Community Support
Community Support

Hi @nybjkj ,

Do you mean that you could not display NULL image within your Gallery?

 

Based on the issue that you mentioned, I have made a test on my side, and don't have the issue that you mentioned. Please consider modify your formula as below:

Set the Image property of the Image control within Gallery to following:

If(IsBlank(ThisItem.Image) || ThisItem.Image = "", SampleImage, ThisItem.Image)

If the issue still exists, please consider add a varchar(max) type column to store the image data in your SQL Table, instead of the Image type column, then check if the issue is solved.

More details about storing image data using varchar(max) column in SQL Table, please check the following article:

https://www.youtube.com/watch?v=QnDD7jleHME

 

Best egards,

Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

@nybjkj @wyotim 

That problem sounds really horrible. Surprisingly (or luckily), I've never come across this before.

Unfortunately, I haven't been able to recreate this issue despite scrolling, refreshing, sorting, or searching the records in a gallery as much as possible.

Looking at this a bit further, I notice that adding ThisItem.Image to a text label in the gallery returns in an image location in the format:

 

"appres://datasources/[dbo].[TableName]/table/[dbo].[TableName]/rows/<PrimaryKeyValue>/inline/PhotoData"

 

image.png

 

Out of interest, let's suppose you add a label and set the Text property to ThisItem.Image. When the problem occurs, does the PrimaryKeyValue value in the label match the actual primary key value for the record, or can you detect some deviation in the values? If you were to then add an Image control in a separate screen and set the image to the location that you see in the label, do you correctly see an empty image, or do you see some random image?

Thanks @wyotim for the workaround. I'm sure it'll help anyone suffering from the same problem.

ericonline
Community Champion
Community Champion

I have not encountered this issue.

wyotim
Resident Rockstar
Resident Rockstar

@timl, many thanks for the reply. I did some checking and found some interesting results. For starters, when using a data table (be it directly or through a collection) the number you referred to as PrimaryKeyValue is, in fact, the primary key. When using a view however it is NOT a primary key of any kind. This is was very apparent as the first item I used to check had a 0 and I can guarantee that there is no 0 in my PKs. Smiley LOL Strangely though, that number didn't seem to have much rhyme or reason to it. The numbers don't coincide with any PKs, they aren't in order of the creation of each row, and they aren't in the order that the view is collected or sorted by in PowerApps. 

 

Also, the image issues I have seen aren't just for blank images but also occasional swapping of existing images. So there's that. 

 

Regarding the test of adding an image control and pasting the text in, it did reproduce the image it was supposed to in my testing and I was able to change images by changing that reference number, getting the correct image each time.

 

All that to say this seems like a view-specific issue.

 

@v-xida-msft, thanks for the video link. Paul did a follow-up video to that one which was also quite interesting: 

https://youtu.be/qX3i8456YwU

 

And thanks for stopping in @ericonline!

That's some great investigation there @wyotim! Thanks for sharing your results.

It's interesting how the unqiue identifiers are random when you use a view. I reckon that could be the cause of the bug.  Perhaps PowerApps is re-allocating those row ids to ones that have been used before when you scroll, refresh, or carry out some other action.

It's very useful to know that it applies to views only.

 

nybjkj
Regular Visitor

Thanks @wyotim  and @timl  - that's excellent anaysis.  Indeed, as my second post mentioned, I am using views, so the 'strange' primary key values would explain the behaviour.  For now I have implemented @wyotim's suggestion of a 'hasImage' boolean - only took a few minutes and is working well.

 

@v-xida-msft thank you for the videos, but I am not going to change from an image to a varchar(max) column, as this results in the App storing the 'appres://' reference, and I want the database to hold the images locally (in binary form).

Helpful resources

Announcements

Exclusive LIVE Community Event: Power Apps Copilot Coffee Chat with Copilot Studio Product Team

  It's time for the SECOND Power Apps Copilot Coffee Chat featuring the Copilot Studio product team, which will be held LIVE on April 3, 2024 at 9:30 AM Pacific Daylight Time (PDT).     This is an incredible opportunity to connect with members of the Copilot Studio product team and ask them anything about Copilot Studio. We'll share our special guests with you shortly--but we want to encourage to mark your calendars now because you will not want to miss the conversation.   This live event will give you the unique opportunity to learn more about Copilot Studio plans, where we’ll focus, and get insight into upcoming features. We’re looking forward to hearing from the community, so bring your questions!   TO GET ACCESS TO THIS EXCLUSIVE AMA: Kudo this post to reserve your spot! Reserve your spot now by kudoing this post.  Reservations will be prioritized on when your kudo for the post comes through, so don't wait! Click that "kudo button" today.   Invitations will be sent on April 2nd.Users posting Kudos after April 2nd. at 9AM PDT may not receive an invitation but will be able to view the session online after conclusion of the event. Give your "kudo" today and mark your calendars for April 3rd, 2024 at 9:30 AM PDT and join us for an engaging and informative session!

Tuesday Tip: Unlocking Community Achievements and Earning Badges

TUESDAY TIPS are our way of communicating helpful things we've learned or shared that have helped members of the Community. Whether you're just getting started or you're a seasoned pro, Tuesday Tips will help you know where to go, what to look for, and navigate your way through the ever-growing--and ever-changing--world of the Power Platform Community! We cover basics about the Community, provide a few "insider tips" to make your experience even better, and share best practices gleaned from our most active community members and Super Users.   With so many new Community members joining us each week, we'll also review a few of our "best practices" so you know just "how" the Community works, so make sure to watch the News & Announcements each week for the latest and greatest Tuesday Tips!     THIS WEEK'S TIP: Unlocking Achievements and Earning BadgesAcross the Communities, you'll see badges on users profile that recognize and reward their engagement and contributions. These badges each signify a different achievement--and all of those achievements are available to any Community member! If you're a seasoned pro or just getting started, you too can earn badges for the great work you do. Check out some details on Community badges below--and find out more in the detailed link at the end of the article!       A Diverse Range of Badges to Collect The badges you can earn in the Community cover a wide array of activities, including: Kudos Received: Acknowledges the number of times a user’s post has been appreciated with a “Kudo.”Kudos Given: Highlights the user’s generosity in recognizing others’ contributions.Topics Created: Tracks the number of discussions initiated by a user.Solutions Provided: Celebrates the instances where a user’s response is marked as the correct solution.Reply: Counts the number of times a user has engaged with community discussions.Blog Contributor: Honors those who contribute valuable content and are invited to write for the community blog.       A Community Evolving Together Badges are not only a great way to recognize outstanding contributions of our amazing Community members--they are also a way to continue fostering a collaborative and supportive environment. As you continue to share your knowledge and assist each other these badges serve as a visual representation of your valuable contributions.   Find out more about badges in these Community Support pages in each Community: All About Community Badges - Power Apps CommunityAll About Community Badges - Power Automate CommunityAll About Community Badges - Copilot Studio CommunityAll About Community Badges - Power Pages Community

Tuesday Tips: Powering Up Your Community Profile

TUESDAY TIPS are our way of communicating helpful things we've learned or shared that have helped members of the Community. Whether you're just getting started or you're a seasoned pro, Tuesday Tips will help you know where to go, what to look for, and navigate your way through the ever-growing--and ever-changing--world of the Power Platform Community! We cover basics about the Community, provide a few "insider tips" to make your experience even better, and share best practices gleaned from our most active community members and Super Users.   With so many new Community members joining us each week, we'll also review a few of our "best practices" so you know just "how" the Community works, so make sure to watch the News & Announcements each week for the latest and greatest Tuesday Tips!   This Week's Tip: Power Up Your Profile!  🚀 It's where every Community member gets their start, and it's essential that you keep it updated! Your Community User Profile is how you're able to get messages, post solutions, ask questions--and as you rank up, it's where your badges will appear and how you'll be known when you start blogging in the Community Blog. Your Community User Profile is how the Community knows you--so it's essential that it works the way you need it to! From changing your username to updating contact information, this Knowledge Base Article is your best resource for powering up your profile.     Password Puzzles? No Problem! Find out how to sync your Azure AD password with your community account, ensuring a seamless sign-in. No separate passwords to remember! Job Jumps & Email Swaps Changed jobs? Got a new email? Fear not! You'll find out how to link your shiny new email to your existing community account, keeping your contributions and connections intact. Username Uncertainties Unraveled Picking the perfect username is crucial--and sometimes the original choice you signed up with doesn't fit as well as you may have thought. There's a quick way to request an update here--but remember, your username is your community identity, so choose wisely. "Need Admin Approval" Warning Window? If you see this error message while using the community, don't worry. A simple process will help you get where you need to go. If you still need assistance, find out how to contact your Community Support team. Whatever you're looking for, when it comes to your profile, the Community Account Support Knowledge Base article is your treasure trove of tips as you navigate the nuances of your Community Profile. It’s the ultimate resource for keeping your digital identity in tip-top shape while engaging with the Power Platform Community. So, dive in and power up your profile today!  💪🚀   Community Account Support | Power Apps Community Account Support | Power AutomateCommunity Account Support | Copilot Studio  Community Account Support | Power Pages

Super User of the Month | Chris Piasecki

In our 2nd installment of this new ongoing feature in the Community, we're thrilled to announce that Chris Piasecki is our Super User of the Month for March 2024. If you've been in the Community for a while, we're sure you've seen a comment or marked one of Chris' helpful tips as a solution--he's been a Super User for SEVEN consecutive seasons!       Since authoring his first reply in April 2020 to his most recent achievement organizing the Canadian Power Platform Summit this month, Chris has helped countless Community members with his insights and expertise. In addition to being a Super User, Chris is also a User Group leader, Microsoft MVP, and a featured speaker at the Microsoft Power Platform Conference. His contributions to the new SUIT program, along with his joyous personality and willingness to jump in and help so many members has made Chris a fixture in the Power Platform Community.   When Chris isn't authoring solutions or organizing events, he's actively leading Piasecki Consulting, specializing in solution architecture, integration, DevOps, and more--helping clients discover how to strategize and implement Microsoft's technology platforms. We are grateful for Chris' insightful help in the Community and look forward to even more amazing milestones as he continues to assist so many with his great tips, solutions--always with a smile and a great sense of humor.You can find Chris in the Community and on LinkedIn. Thanks for being such a SUPER user, Chris! 💪🌠

Find Out What Makes Super Users So Super

We know many of you visit the Power Platform Communities to ask questions and receive answers. But do you know that many of our best answers and solutions come from Community members who are super active, helping anyone who needs a little help getting unstuck with Business Applications products? We call these dedicated Community members Super Users because they are the real heroes in the Community, willing to jump in whenever they can to help! Maybe you've encountered them yourself and they've solved some of your biggest questions. Have you ever wondered, "Why?"We interviewed several of our Super Users to understand what drives them to help in the Community--and discover the difference it has made in their lives as well! Take a look in our gallery today: What Motivates a Super User? - Power Platform Community (microsoft.com)

March User Group Update: New Groups and Upcoming Events!

  Welcome to this month’s celebration of our Community User Groups and exciting User Group events. We’re thrilled to introduce some brand-new user groups that have recently joined our vibrant community. Plus, we’ve got a lineup of engaging events you won’t want to miss. Let’s jump right in: New User Groups   Sacramento Power Platform GroupANZ Power Platform COE User GroupPower Platform MongoliaPower Platform User Group OmanPower Platform User Group Delta StateMid Michigan Power Platform Upcoming Events  DUG4MFG - Quarterly Meetup - Microsoft Demand PlanningDate: 19 Mar 2024 | 10:30 AM to 12:30 PM Central America Standard TimeDescription: Dive into the world of manufacturing with a focus on Demand Planning. Learn from industry experts and share your insights. Dynamics User Group HoustonDate: 07 Mar 2024 | 11:00 AM to 01:00 PM Central America Standard TimeDescription: Houston, get ready for an immersive session on Dynamics 365 and the Power Platform. Connect with fellow professionals and expand your knowledge. Reading Dynamics 365 & Power Platform User Group (Q1)Date: 05 Mar 2024 | 06:00 PM to 09:00 PM GMT Standard TimeDescription: Join our virtual meetup for insightful discussions, demos, and community updates. Let’s kick off Q1 with a bang! Leaders, Create Your Events!    Leaders of existing User Groups, don’t forget to create your events within the Community platform. By doing so, you’ll enable us to share them in future posts and newsletters. Let’s spread the word and make these gatherings even more impactful! Stay tuned for more updates, inspiring stories, and collaborative opportunities from and for our Community User Groups.   P.S. Have an event or success story to share? Reach out to us – we’d love to feature you!

Top Solution Authors
Top Kudoed Authors
Users online (4,126)