Hi @ArnoHendrikx ,
Do you want the Gallery to connect to your local image folder?
If you want the Gallery to connect to your local image folder, I afraid that there is no way to achieve your needs in PowerApps currently.
Currently, within PowerApps, there is no connector supported to use local Folder as data source in an app. If you would like this feature to be added, please consider submit an idea to PowerApps Ideas Forum:
https://powerusers.microsoft.com/t5/Power-Apps-Ideas/idb-p/PowerAppsIdeas
As an alternative solution, you could consider add a Attachments control in your app, then use it to select image files from your local folder, then display these selected images file within a Gallery control.
Currently, there is no direct way to add a Attachments control into an app, please check and see if the following video would help in your scenario (with the help of Edit form which is connected to SP list😞
https://www.youtube.com/watch?v=kQVYid1p_vA
https://www.youtube.com/watch?v=UYK7yruBHDM
After you added the Attachments control in your app, set the OnAddFile property to following:
Clear(FileCollection);
ForAll(RenameColumns(FileUploadsControl.Attachments,"Name", "Name1", "Value", "Value1"), Collect(FileCollection, {FileName: Name1, FileContent: Value1}))
set the OnRemoveFile property to following:
Clear(FileCollection);
ForAll(RenameColumns(FileUploadsControl.Attachments,"Name", "Name1", "Value", "Value1"), Collect(FileCollection, {FileName: Name1, FileContent: Value1}))
Add a Gallery (Image layout) in your app, set the Items property to following:
FileCollection
set the Image property of the Image within the Gallery to following:
ThisItem.FileContent
then you could patch the Gallery Images back to your SQL Table.
Best regards,