Dynamic Image Name Question

(0) Share

Report

Posted on by audrieFCT

987

I have uploaded three images to my Power App (content>media).

ImageA

ImageB

ImageC

I have added three buttons to a new screen:

Button 1-A

Button 2-B

Button 3-C

I have added an image control (MyImage) under the buttons.

I want to click on the button and make the image change in the image control.

So, what I did is created a context value called "SImage" and I'm using it like this:

Button 1-A OnSelect = UpdateContext( { SImage: "ImageA" } )

Button 2-B OnSelect = UpdateContext( { SImage: "ImageB" } )

Button 3-C OnSelect = UpdateContext( { SImage: "ImageC" } )

Finally, I added a Textbox Control (IName).

I have set the textbox Name default value to SImage

I have set MyImage Image setting to IName.Text

(because in real life I need this to work even if the user changes screens)

When I click on the button the Textbox contents changes as expected, but the image does not show up at all. Can anyone help me out please?

Categories:

Building Power Apps

I have the same question (0)

All responses (6)

Answers (1)

Sort by

v-yamao-msft Microsoft Employee on at

Like
a
(1)

Report
Copy link

Link copied!

Hi Audrieg,

Per my test, if I set the OnSelect property of the button as “UpdateContext( { SImage: ImageA } )” without a double quotation mark on ImageA, it would work.

Please try if this works for you.

Best regards,
Mabel Mao

Was this reply helpful? Yes No
petsa Microsoft Employee on at

Like
a
(0)

Report
Copy link

Link copied!

Having almost the same problem ...
I would like to get the images from URL's instead and change them the same way dynamically in event handlers but could not get it to work for some reason.

Small test:
on Form "onVisible": UpdateContext( { myimage: "https://3.bp.blogspot.com/-W__wiaHUjwI/Vt3Grd8df0I/AAAAAAAAA78/7xqUNj8ujtY/s1600/image02.png" } )

then on the the actual image control I set property: Image=myimage
=> No visible picture.

Then when I use buttons to do the same this , still no image.
There must a be some syntactical trick to this, right ?

petri.

Was this reply helpful? Yes No
audrieFCT 987 on at

Like
a
(0)

Report
Copy link

Link copied!

My scenariio completely changed after I updated power apps. The image is working now (the returned value is now a link to the image embedded in the file). However the text value I wanted to be clean for the topic selection is now not working.

Thank you for your help with the picture though!

Was this reply helpful? Yes No
Verified answer

rgruian Microsoft Employee on at

Like
a
(1)

Report
Copy link

Link copied!

Audrie,

PowerApps keeps no explicit mapping/association between the names of image resources and their underlying "values" that are referenced in formulas. You will need to maintain that mapping yourself:

    Button 1-A OnSelect = UpdateContext( { SImage: "ImageA", Image: ImageA } )
    Button 2-B OnSelect = UpdateContext( { SImage: "ImageB", Image: ImageB } )
    Button 3-C OnSelect = UpdateContext( { SImage: "ImageC", Image: ImageC } )

    IName.Text = SImage
    MyImage.Image = Image

I hope this helps.

Was this reply helpful? Yes No
audrieFCT 987 on at

Like
a
(0)

Report
Copy link

Link copied!

I've got this really weird situation where the returned value for the Topic is fluctuating.....

I'm going to try what you suggested before I spend a lot of time explaining what I mean 🙂

Was this reply helpful? Yes No
audrieFCT 987 on at

Like
a
(0)

Report
Copy link

Link copied!

That worked, and stopped the fluctuation! Thank you!

Was this reply helpful? Yes No