Extracting icon from file: most efficient method?

[Mark]

Hi

I'm using vb.Net in VS2005 and want to extract the icon for file refence
records.

I saw an example a while back that searched the registry for the default
icon etc. It was a little long winded.

I have since discovered "Drawing.Icon.E xtractAssociate dIcon" which can do
the same job in one line of code.

My question then is... which is quicker, is "ExtractAssocia tedIcon" simply
the old method wrapped up?

Thanks in advance

Mark

[Mark]

Re: Extracting icon from file: most efficient method? and my next question....

Hello again
Following on from below, is it possible to save the icon in the image list
at runtime so I wouldn't have to extract it again next time?

Thanks again

Mark

"Mark" <me@abc.comwrot e in message
news:OvLUg.25$a Z3.21@newsfe2-win.ntli.net...

Hi
>
I'm using vb.Net in VS2005 and want to extract the icon for file refence
records.
>
I saw an example a while back that searched the registry for the default
icon etc. It was a little long winded.
>
I have since discovered "Drawing.Icon.E xtractAssociate dIcon" which can do
the same job in one line of code.
>
My question then is... which is quicker, is "ExtractAssocia tedIcon" simply
the old method wrapped up?
>
Thanks in advance
>
Mark
>

[rowe_newsgroups]

Re: Extracting icon from file: most efficient method?

My question then is... which is quicker, is "ExtractAssocia tedIcon" simply

the old method wrapped up?

A common way to measure speed is to grab the start time, run a loop
with the method few times, grab the endtime, and compare the two times.


i.e.

<pseudocode>

dim starttime as double = now.millisecond s

for i as integer = 1 to 1000
' do one of the methods here
next i

dim endtime as double = now.millisecond s

msgbox (endtime - starttime & " milliseconds")

</pseudocode>

Do this for both methods and see for yourself which runs faster. You
may want to build a release version of the app to get to see which is
faster in a "live" enviroment. Personnally, if there isn't much
difference I would go for the less verbose method, so if you look back
at the code in a few months you won't have much trouble figuring out
whats going on.

Thanks,

Seth Rowe


Mark wrote:

Hi
>
I'm using vb.Net in VS2005 and want to extract the icon for file refence
records.
>
I saw an example a while back that searched the registry for the default
icon etc. It was a little long winded.
>
I have since discovered "Drawing.Icon.E xtractAssociate dIcon" which can do
the same job in one line of code.
>
My question then is... which is quicker, is "ExtractAssocia tedIcon" simply
the old method wrapped up?
>
Thanks in advance
>
Mark

[Mark]

Re: Extracting icon from file: most efficient method?

Thanks Seth...

Mark

"rowe_newsgroup s" <rowe_email@yah oo.comwrote in message
news:1159978882 .060878.28140@c 28g2000cwb.goog legroups.com...

>My question then is... which is quicker, is "ExtractAssocia tedIcon"
>simply
>the old method wrapped up?

>
A common way to measure speed is to grab the start time, run a loop
with the method few times, grab the endtime, and compare the two times.
>
>
i.e.
>
<pseudocode>
>
dim starttime as double = now.millisecond s
>
for i as integer = 1 to 1000
' do one of the methods here
next i
>
dim endtime as double = now.millisecond s
>
msgbox (endtime - starttime & " milliseconds")
>
</pseudocode>
>
Do this for both methods and see for yourself which runs faster. You
may want to build a release version of the app to get to see which is
faster in a "live" enviroment. Personnally, if there isn't much
difference I would go for the less verbose method, so if you look back
at the code in a few months you won't have much trouble figuring out
whats going on.
>
Thanks,
>
Seth Rowe
>
>
Mark wrote:

>Hi
>>
>I'm using vb.Net in VS2005 and want to extract the icon for file refence
>records.
>>
>I saw an example a while back that searched the registry for the default
>icon etc. It was a little long winded.
>>
>I have since discovered "Drawing.Icon.E xtractAssociate dIcon" which can do
>the same job in one line of code.
>>
>My question then is... which is quicker, is "ExtractAssocia tedIcon"
>simply
>the old method wrapped up?
>>
>Thanks in advance
>>
>Mark

>