Why the speeds are so different when using VBA to do the same job

Discussion created by luckymichael on Dec 9, 2010
I wrote a VBA script to extract the values of a set of points.

I used the Identify method to get the values for over 30000 points. It will take hours to finish the job.

But if I use the Extract Values to Points, just a few minutes.

Some one has ideas what method this tool uses?