title: Unchecking CheckBox Placed in GridView's Header Template
body: <p>I'm using a list view in which I have placed a grid view which contains a checkbox in the header template. Now if this checkbox is checked and I press the clear button then all the checkboxes in that column are unchecked, but that specific checkbox which is in the header is unchecked. What I want is that when the clear button is pressed, that checkbox also should be unchecked.</p>