Question

Have to use free WPF DataGrid (I thought Infragistics libraries are bad, I take it back after this) for this project of mine.

Looks like DataGrid doesnt have clean MVVM Friendly way of getting the list of selectedRows ?

I can data bind to SelectedItem="{Binding SelectedSourceFile}" but this only shows the 1st selected row. Need to be able to get all selected rows.

Any hints to do it cleanly via MVVM ?

Answer 1

You could use a workaround I created for situations like this that allows you to do OneWayToSource Bindings for readonly dependency properties. I call it PushBinding.

I made a blog post about it here: OneWayToSource Binding for ReadOnly Dependency Property

To bind SelectedItems, you can do this

<DataGrid ItemsSource="{Binding ...}">
    <pb:PushBindingManager.PushBindings>
        <pb:PushBinding TargetProperty="SelectedItems" Path="MySelectedItems"/>
    </pb:PushBindingManager.PushBindings>
</DataGrid>

And the property in the ViewModel

public IList MySelectedItems
{
    get;
    set;
}

If you’re interested, you can download a demo project using PushBinding here: PushBindingInStyleDemo.zip