Multi-select support for the MultiColumnTreeView

Hi Ivan, Someone had requested this feature in an old thread, and we would really like it for our product. Is there any chance that you'll be adding this? Thanks.

I've had a quick go at this and unfortunately it's not something we could easily do -- it would require a fairly substantial change to the design of the MulticolumnTreeView.  (We currently inherit the core behaviour of the MulticolumnTreeView from the WPF TreeView, and that enforces a single-selection model in a rather strict way.  Relaxing the single-selection model would therefore require us to stop using TreeView, which would in turn require us to reimplement a lot of that behaviour ourselves.)  So I'm afraid this is not likely to happen in the short term -- sorry!

As an alternative, JD suggested that if your model objects have (or could have added to them, or could be wrapped in something that adds) a "selected" property, you could do this by using a CellTemplate that includes a CheckBox bound to that property.

Obviously the downside of this is that it makes single-selection a lot less convenient, so it's not going to work if your users normally select a single thing but occasionally want to multiselect.  It's more suited to the case where you're presenting a list where multiple selection is the norm and toggling items on and off is actually more convenient than having to Ctrl-click.  Anyway, I thought I'd pass on the idea in case it's useful to you!

We are also interested in using multi-select. We are already using check boxes to allow selecting files. We wish to use multiselect to allow multiple items properties to be changed at once. Is there any progress or timeframe on this at all?

Thanks,

Jeremy Drice - Runge Ltd

Hello Jeremy,

I'm afraid this is not something we're pursuing at the moment.  I've bumped the priority of the feature request but because this is likely to require a fair bit of effort to implement we can't commit to it or to any particular timeframe.  Sorry.