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Why doesn't GC.Collect() free memory?
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assaf
hi all,
when i minimize my app it's immediate free most of the memory,

but when i use GC.Collect() it does nothing, Why?

and how can i make it work?

thanks,

assaf
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.NET Smart ©
Garbage collection will not free your object if it finds that managed code
still has references to it.

Thanks
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Girish bharadwaj
assaf:
Minimizing Application frees up memory not because of your doing but because
windows realizes that there is no (windowing) resources that will be used
when you are minimized.
This is entirely different from what happens when you call GC.Collect().
That is useful when there are objects without references.

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Jochen Kalmbach
Hello assaf,

> when i minimize my app it's immediate free most of the memory,

No, it will only reduce the working set. No memory is freed!

> but when i use GC.Collect() it does nothing, Why?

GC only fress memory if there are other apps which needs more memory. If
there is enough free space it will not free memory.

> and how can i make it work?

You can, expect of reducing physical RAM.

--
Greetings
Jochen

My blog about Win32 and .NET
http://blog.kalmbachnet.de/
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Chris Lyon [MSFT] (VIP)
Hi Assaf

Don't use Task Manager to monitor the amount of memory your application is using. Like Jochen stated, that monitors your working set, not the amount of memory being used.
Instead, use a profiler or GC.TotalMemory(false).

To find out exactly what the GC does when you call Collect(), check out these articles:
http://msdn.microsoft.com/msdnmag/issues/1100/gci/
http://msdn.microsoft.com/msdnmag/issues/1200/GCI2/

Hope that helps
-Chris

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