Below is an excerpt of some xaml I am using. The important thing to notice is that I have a listbox of checkboxes associated with each grid row.
How do I bind the all the checkboxes that I want checked for selected gridview item?
The DataContext of each RowDetails element is its parent row's bound data item. Thus, provided the objects inside your Samples collection have a Techniques collection property, where each Technique has its own IsSelected and TechniqueName properties, the following code should result in the expected result.