I think it’s time to ask for help! I have an ItemsControl that lists UserControls (called CompoundCardControl):

<ScrollViewer Grid.Row = "1" VerticalScrollBarVisibility="Auto">
    <ItemsControl ItemsSource="{Binding Method.Compounds}">
        <ItemsControl.ItemTemplate>
            <DataTemplate>
                <control:CompoundCardControl/>
            </DataTemplate>
        </ItemsControl.ItemTemplate>
    </ItemsControl>
</ScrollViewer>type here

The UserControl contains a button that is suppose to remove the item from the ListView (and the ViewModel):

<Grid Width="{Binding ActualWidth, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}}">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="auto"/>
        <ColumnDefinition Width="auto"/>
        <ColumnDefinition Width="auto"/>
        <ColumnDefinition Width="*"/>
        <ColumnDefinition Width="25"/>
    </Grid.ColumnDefinitions>

    <TextBlock Grid.Column="0" Margin="5,0,0,0" Text="{Binding Name}" />
    <TextBlock Grid.Column="1" Margin="5,0,0,0" Foreground="Gray" FontSize="10" VerticalAlignment="Center" Text="RT"/>
    <TextBlock Grid.Column="2" Margin="5,0,0,0" Text="{Binding RetentionTime , StringFormat= '{0} minutes'}" />
    <Button Grid.Column="3" HorizontalAlignment="Right" Style="{StaticResource menuBarButton}"
            Command="{Binding DataContext.DeleteCompoundCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ItemsControl}}}"
            CommandParameter="{Binding Compound}">
        <Image Width="12" Height="12"  Source="/Resources/Icons/Delete.png"/>
    </Button>
</Grid>

This is my ViewModel for my parent window (but it obviously doesn’t work)”:

public class MethodDialogViewModel : ViewModelBase
{
    //properties
    public DialogModeEnum DialogMode { get; private set; }
    public string WindowTitle { get { return DialogMode == DialogModeEnum.Add ? "New method" : "Edit method"; } }
    public string ButtonText { get { return DialogMode == DialogModeEnum.Add ? "Add" : "Update"; } }
    public Method Method { get; set; }
    public MethodCompound Compound { get; set; } = new MethodCompound();

    //constructor
    public MethodDialogViewModel(Method method, DialogModeEnum dialogMode)
    {
        DialogMode = dialogMode;    
        Method = method;
    }

    //commands
    public RelayCommand DeleteCompoundCommand => new(execute => DeleteCompound(Compound));
    private void DeleteCompound(MethodCompound methodCompound)
    {
    //Logic not implimented. I just want to see if I can get the object "methodCompound"
        if (methodCompound != null)
        {
            MessageBox.Show(methodCompound.ID);
        }
        else
        {
            MessageBox.Show("Please select a compound.", "Delete compound", MessageBoxButton.OK, MessageBoxImage.Information);
        }
    }
}

Basically I want to pass the Item (actually, the underlying object) in the ItemsControl to the ViewModel. How do I do that? Or am I totally botching this?