If there are some int,string ,ushort filed in a class,How to find out
how it would cost of the memery?

Hello Kevien,

Well, there's "sizeof" in C#, but it works only on value types. Explained
here:

http://msdn.microsoft.com/library/de...rfsizeofpg.asp

For unmanaged types there's also Marshal.SizeOf, here:

http://msdn2.microsoft.com/en-us/lib...al.sizeof.aspx

Now, in the managed world there's really no reason to ask for the size of
class structures, and the size of a class is not really a defined value.
Of course you could use the C# sizeof to calculate the size of a class as
the sum of the sizes of its (value type) members, but whether or not that
would help you depends mostly on the problem you're trying to solve here.
Maybe we can help you more if you explain what it is that you're trying to
do.


Oliver Sturm
--
http://www.sturmnet.org/blog

It would probably be impossible to get the amount of memory accupied by a
class since it depends on framework implementation. What you can do is using
statistics to estimate this amount by creating lot's of classes and divide
memory consumption by number of created classes. You can measure memory
consumption with some memory usage statistics application.

regards
Tomaz

"Kevien Lee" <ironpythonster (AT) gmail (DOT) com> wrote

Kevien Lee wrote:

Hi Kevien

I have a similar problem and as you can see from the other posts, the
sizeof function only works on value types, so not much use for objects.

Personally I just serialize the object to either a temp file (or
memory) and check the stream pointer or file length afterwards (which
is your object size!). It's a bit clunky but it works.

Hope this helps

Shane