Maximum length of byte[]?

Question

I\'m trying to create an array of bytes whose length is UInt32.MaxValue. This array is essentially a small(ish) in-memory database:

Answer 1

The current implementation of System.Array uses Int32 for all its internal counters etc, so the theoretical maximum number of elements is Int32.MaxValue.

There's also a 2GB max-size-per-object limit imposed by the Microsoft CLR.

A good discussion and workaround here...

• BigArray, getting around the 2GB array size limit

And a few related, not-quite-duplicate, questions and answers here...

• Is there a limit of elements that could be stored in a List ?
• Very large collection in .Net causes out-of-memory exception
• what is the max limit of data into list in c#?