I need to create a file/directory selection dialog with everything displayed in a tree view. That is easy of course, but I also need for three state checkboxes to accompany each file and directory to indicate whether they are selected or not. Here is a web-based example that demonstrates.
I've looked around quite a bit, but I can't find any straightforward way to do this with any of the Visual Studio languages. I really don't want to use JavaScript as in that example. Anyone know of a relatively easy way that this can be accomplished? Thanks for any help you can give.