RowDetails template and SelectedItem etc

[Trump]

I want to use RowDetails in the grid. So I want to put a toggle button on the first column, click it will expand or collapse. The question is that I click it the selected Item is not bind. It seems that button is not belonging to the selectedItemUnless I click somewhere else on the row. 

Not sure..how? Sorry I can't provide sample code now...

[Martin Ivanov]

Hi Trump,

To achieve your requirement you can use the RowDetailsVisibilityChanged event of RadGridView. Here is an example in code:

private void RadGridView_RowDetailsVisibilityChanged(object sender, GridViewRowDetailsEventArgs e)
{
    if (e.Visibility == Visibility.Visible)
    {
        this.gridView.SelectedItems.Add(e.Row.Item);
    }
    else
    {
        this.gridView.SelectedItems.Remove(e.Row.Item);
    }
}

Regards,
Martin Ivanov
Progress Telerik

[Trump]

It seems to be working. But can we use MVVM? Because when the template expanding, I want to set a bool property in ViewModel.

[Martin Ivanov]

Hello Trump,

To achieve your requirement you can data bind the DetailsVisibility property of GridViewRow to a property of the view model of the row. To do this you can use the RowStyle property of RadGridView. I've attached a small example showing this approach. Can you please give it a try and let me know how it goes?

Regards,
Martin Ivanov
Progress Telerik