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# Dynamic Regions

Reload sections of PowerShell Universal apps on demand with New-UDDynamic, using arguments, auto refresh intervals, and custom loading components.

`New-UDDynamic` allows you to define a dynamic region. Pages themselves are dynamic in nature. This means that every time a page is loaded, it runs the PowerShell for that page. Sometimes, you may want to reload a section of a page rather than the whole page itself. This is when you will want to use dynamic regions.

## Basic Dynamic Region

This dynamic region reloads when the button is clicked.

```powershell
New-UDApp -Title "Hello, World!" -Content {
    New-UDDynamic -Id 'date' -Content {
        New-UDTypography -Text "$(Get-Date)"
    }

    New-UDButton -Text 'Reload Date' -OnClick { Sync-UDElement -Id 'date' }
}
```

## Arguments List

An array of arguments may be passed to the dynamic region.

```powershell
New-UDDynamic -Id 'dynamic_01' -Content {
    New-UDTypography -Text "This is an $($ArgumentList[0]) an $($ArgumentList[1]) in a UDDynamic"
} -ArgumentList @('example of', 'arguments list') 
```

You can use `Sync-UDElement` to change the argument values.

```powershell
 New-UDDynamic -id DynamicRegion -ArgumentList 5,'hello' -content {
  foreach($item in $argumentList){
      New-UDTypography -Variant h3 -Text "Item: $item"
  }
 }

 New-UDButton -Text "Sync Dynamic" -onclick {
  Sync-UDElement -id DynamicRegion -ArgumentList 10,'World'
 }
```

## Auto Refresh

Dynamic regions enable the ability to auto refresh components after a certain amount of time. The entire region's script block will be run when autorefreshing.

{% hint style="info" %}
If you have multiple related components that use the same data, consider putting them in the same dynamic region to improve performance.
{% endhint %}

```powershell
    New-UDDynamic -Id 'date' -Content {
        New-UDTypography -Text "$(Get-Date)" -Variant h3
        New-UDTypography -Text "$(Get-Random)" -Variant h3
    } -AutoRefresh -AutoRefreshInterval 1
```

## Loading Component

Sometimes refreshing a dynamic component may take some time. For example, if you are querying another service's REST API or a data. Dynamic regions support configuration of the component that shows when the region is reloading. By default, nothing is shown. This can be any app component.

```powershell
    New-UDDynamic -Content {
        Start-Sleep -Seconds 3
        New-UDTypography -Text "Done!"
    } -LoadingComponent {
        New-UDProgress -Circular
    }
```

## API

[New-UDDynamic](/powershell-universal/powershell-commands/new-uddynamic.md)

### See also

* [Devolutions Academy – User status/refresh user details](https://academy.devolutions.net/student/activity/3546046-part-5-user-status-refresh-user-details)


---

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