Performance Question on finding entities

[Anonymous]

Wondering if anybody any idea of which of the methods would be faster.

I need to find a number of entities based on layername, entity type, and
if there is XData attached. I then need to perform different procedures depending
what the layername, type, and Xdata properties.

Would it be faster to create selection filter that would grap all entities
I'm interesed in and return a single result buffer then parse out the found
entities OR perform multiple selection filter searches. (I'm assuming the
built in selection alogorithms would be faster than parsing the BTRs and
creating own collections via .NET, correct?)

Thanks

[Anonymous]

Yes you are correct that using selection sets are faster than parsing all of the block records.

If you are doing something with your returned data i would tend to separate out the filters.

Patrick Johnson
http:\\www.cadenhancement.com

[Anonymous]

Hello patrick1256,
I had a feeling using multiple selections would be faster than parsing a
single large result buffer. I'm going that route but when I get time I'll
try both methods to confirm and report the results.

Thanks
Mike Robertson

> Yes you are correct that using selection sets are faster than parsing
> all of the block records.
>
> If you are doing something with your returned data i would tend to
> separate out the filters.
>
> Patrick Johnson
> http:\\www.cadenhancement.com

[Anonymous]

From my experience, selections sets are faster, but you can only use them if you're opening the drawing, so the rule for me is if the drawing is opened, use SS.