Thanks for the link Tracy. He sure seems to indicate that there are no performance problems, although as Viv mentioned, he doesn't show the code he used for his benchmark test.

I'll have to see if I can find any other articles about performance.

~~Bonnie



>>Hi,
>>
>>>Has anyone had any "real-life" experience using Extention methods who can say whether there's a performance issue with them or not?
>>
>>I don't really know. But I think the compiler just treats it as a call to the static method (passing the instance as a parameter) so I don't see why it would impact speed at runtime.
>>
>>Best,
>>Viv
>
>Is this an accurate example?
>
>http://computeroverlord.tumblr.com/post/44787130/performance-method-calls-vs-extension-method-calls
>Code:
>http://computeroverlord.tumblr.com/post/44785300/find-deeply-nested-child-objects-in-any-container-with-r