Determine available memory that can be used before OutOfMemoryException is thrown

Question

The OutOfMemoryException for my applications is thrown way before the system itself runs out of memory, as explained by:
MSDN Blogs - Out of memory? Easy ways to increase the memory available to your program.

When you run your C# application, you might get an OutOfMemoryException thrown, even if your machine has lots of memory. [...] That 4 Gigs is divided into half: the user application gets the lower half and the OS gets the upper. (This boundary can be changed: see below).

By request, I need to visualize how much memory is available for my application and the current usage. Current usage can be retrieved using Process.GetCurrentProcess(); and others, but how to determine the memory available to my application at run-time? I just cannot figure out.

Try out the [CLR Profiler](http://msdn.microsoft.com/en-us/library/ff650691.aspx) — Jeremy Thompson, Mar 09 '13 at 01:10
There is by default a maximum amount of memory a single process can take to itself, I'm pretty sure its 1GB on Windows. Of course you can use more, but I can't help you on how to do that. — Havenard, Mar 09 '13 at 01:12
In any case you are pretty much limited if you application is 32 bits. — Havenard, Mar 09 '13 at 01:13
Post your code and people can help you optimize it, if you like to — bjan, Mar 09 '13 at 04:26

score 1 · Answer 1 · answered Mar 09 '13 at 01:22

You can use MemoryFailPoint to check before a large allocation. This isn't exactly what you're asking for, but if your failure is at a particular known large allocation point, this at least allows you to cleanly handle the allocation failure at the point that it occurs.

Determine available memory that can be used before OutOfMemoryException is thrown

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