- name
- uno-navigation-qualifiers
- description
- Use navigation qualifiers in Uno Platform to control back stack behavior.
- when_to_use
- Use when clearing the navigation back stack (e.g., after login), removing specific pages from back stack, opening dialogs/flyouts via navigation, navigating to nested regions, or using qualifier prefixes in route strings.
- metadata
- {"author":"uno-platform","version":"2.3","category":"navigation"}
# Uno Navigation Qualifiers — Agent Skill
## Workflow
> **Docs lookup:** call `uno_platform_docs_search(...)` first, then `uno_platform_docs_fetch(sourcePath="…")` using the `sourcePath` field from a result (a relative `.md` path; add the result's `anchor` for a section). Never pass a URL, a `.html` link, or a hand-built path.
### Step 1: Fetch the Qualifiers Documentation
```
uno_platform_docs_search("Uno Navigation qualifiers back stack clear dialog Qualifiers class")
```
Primary documentation pages:
- **Navigation Qualifiers Reference**: `external/uno.extensions/doc/Reference/Navigation/Qualifiers.md`
- **Advanced Page Navigation**: `external/uno.extensions/doc/Learn/Navigation/Walkthrough/AdvancedPageNavigation.md`
- **XAML Navigation Qualifiers (Chefs)**: `external/uno.chefs/doc/navigation/XamlNavigation.md`
Fetch the qualifiers reference:
```
uno_platform_docs_fetch(sourcePath="external/uno.extensions/doc/Reference/Navigation/Qualifiers.md")
```
### Step 2: For Advanced Back Stack Management
Fetch the advanced page navigation walkthrough:
```
uno_platform_docs_fetch(sourcePath="external/uno.extensions/doc/Learn/Navigation/Walkthrough/AdvancedPageNavigation.md")
```
### Step 3: For Code-Behind Qualifiers
If using qualifiers from code:
```
uno_platform_docs_search("Uno Navigation Qualifiers.ClearBackStack code behind NavigateViewModelAsync")
```
Key page:
- **How-To Advanced Page Navigation**: `external/uno.extensions/doc/Learn/Navigation/Advanced/HowTo-AdvancedPageNavigation.md`
## Key Principles (Stable)
- `-/` prefix: clears back stack (e.g., `uen:Navigation.Request="-/Login"`)
- `!/` prefix: opens a dialog/flyout
- Qualifiers can be combined with route names
- From code: use `Qualifiers.ClearBackStack`, `Qualifiers.Dialog`, etc.
- `Qualifiers` class is in `Uno.Extensions.Navigation` namespace
- Common scenario: after login, navigate to main page with `-/` to prevent back navigation to login
## Related Skills
- [[uno-navigation-code]] — Programmatic navigation
- [[uno-navigation-xaml]] — XAML navigation with qualifiers
- [[uno-navigation-dialogs]] — Dialog navigation
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