C#•6mo ago

✅ Avalonia - is there a way to cast/convert a value before it's bound?

I've got a combo box in my UI that looks like so:

<ComboBox PlaceholderText="Material" 
          HorizontalAlignment="Stretch" 
          ItemsSource="{Binding Materials}" 
          SelectedItem="{Binding NewTransferFormLine.MaterialId}" />

<ComboBox PlaceholderText="Material" 
          HorizontalAlignment="Stretch" 
          ItemsSource="{Binding Materials}" 
          SelectedItem="{Binding NewTransferFormLine.MaterialId}" />

<ComboBox PlaceholderText="Material" 
          HorizontalAlignment="Stretch" 
          ItemsSource="{Binding Materials}" 
          SelectedItem="{Binding NewTransferFormLine.MaterialId}" />

<ComboBox PlaceholderText="Material" 
          HorizontalAlignment="Stretch" 
          ItemsSource="{Binding Materials}" 
          SelectedItem="{Binding NewTransferFormLine.MaterialId}" />

Materials

Materials

Materials

Materials is of type

ObservableCollection<Material>

ObservableCollection<Material>

ObservableCollection<Material>

ObservableCollection<Material>, and I would like to bind the int ID of the SelectedItem (i.e

Material.Id

Material.Id

Material.Id

Material.Id) to

NewTransferFormLine.MaterialID

NewTransferFormLine.MaterialID

NewTransferFormLine.MaterialID

NewTransferFormLine.MaterialID, which is also an int. Is there a way to do this cast/conversion cleanly within avalonia or do I have to get into the setter and do it there?

enrico11011OP•6/25/25, 7:53 AM

i've solved this in a completely different way, nvm

Buddy•6/25/25, 2:10 PM

For future reference, use converters

Buddy•6/25/25, 2:10 PM

https://docs.avaloniaui.net/docs/guides/data-binding/how-to-create-a-custom-data-binding-converter

✅ Avalonia - is there a way to cast/convert a value before it's bound?

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