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Co-authored-by: Jesper Schulz-Wedde <jesper.schulzwedde@microsoft.com> Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
30 lines
1.4 KiB
Markdown
30 lines
1.4 KiB
Markdown
---
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bc-version: [all]
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domain: ui
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keywords: [updatepropagation, page-part, subpage, main-page, refresh, flowfield, document-lines]
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technologies: [al]
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countries: [w1]
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application-area: [all]
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---
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# Use `UpdatePropagation = Both` when line edits must refresh the main page
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## Description
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A page part does not automatically refresh its parent page when the subpage changes. `UpdatePropagation = Subpage` updates only the part; `Both` also refreshes the main page. Without `Both`, header totals, FlowFields, and FactBoxes that depend on edited lines can remain stale until another user action refreshes the page.
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## Best Practice
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Set `UpdatePropagation = Both` on a part when edits in that subpage must immediately update values rendered by the main page. Leave propagation at `Subpage` when the parent has no dependent presentation to avoid unnecessary refreshes.
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See sample: [`updatepropagation-both-refreshes-main-page.good.al`](updatepropagation-both-refreshes-main-page.good.al).
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## Anti Pattern
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Displaying a line-dependent total on the main page while the editable lines part updates only itself. The persisted values can be correct while the parent page continues to show an old total.
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See sample: [`updatepropagation-both-refreshes-main-page.bad.al`](updatepropagation-both-refreshes-main-page.bad.al).
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## Reference
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[Set different control properties](https://learn.microsoft.com/en-us/training/modules/work-with-pages/8-controls)
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