>how can i change Grid Column Header Size dynamically by using View Property "3. Change Change"?
You can change the Column.Width property in any appropriate event. I don't understand what you mean with "3. Change Change", but as far as I know, there is no option like "automatically adjust to content", for example.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
