If I have a button click event and an ObjectDataSource selecting event, which fires first and why?

Titl开发者_JAVA百科e explains it all really, which event fires first in the page life cycle and why?

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Look at this image: http://i.msdn.microsoft.com/dynimg/IC386473.png

The third column in the image shows the Control Changed events (in yellow bubble) fire before the DataBinding events. The Selecting event is a databinding event, so it gets fire after the button click.