I have a RadGridView that has a GridViewSelectColumn as it's first column. The situation is this:
- The checkbox in the header section (Select/UnSelect All) is checked, selecting all rows
- The data in the grid changes in such a way that I no longer want everything selected, so I want to make sure that the checkbox in the header is unchecked as well.
How do I access that value of that checkbox and uncheck it?