Baseflow / Baseflow/XF-Material-Library
MaterialCheckboxGroup NullReferenceException
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- Dominant language
- C#
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Description
## 🐛 Bug Report
`MaterialCheckboxGroup` throws a `NullReferenceException` when both `SelectedIndices` and `Choices` and bound to the respective binding properties and `Choices` is and empty list.
This is due to https://github.com/Baseflow/XF-Material-Library/blob/20bc606a7bc8b9a6ddceb83fc7a3effd4743c1f6/XF.Material/UI/Internals/BaseMaterialSelectionControlGroup.cs#L145
and https://github.com/Baseflow/XF-Material-Library/blob/20bc606a7bc8b9a6ddceb83fc7a3effd4743c1f6/XF.Material/UI/MaterialCheckboxGroup.xaml.cs#L130
the `foreach` at `MaterialCheckboxGroup.xaml.cs#L130` assumes `Models` to be valid, but due to `BaseMaterialSelectionControlGroup.cs#L145` it's not.
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