Why does MemoryStream.GetBuffer() always throw?

Question

The following code will always throw UnuthorizedAccessException (MemoryStream\'s internal buffer cannot be accessed.)

byte[] buf1 = { 2, 3, 5, 7, 11 };
var         


        

Answer 1

Here is the documentation for MemoryStream(byte[]) constructor that you're using. It specifically says:

This constructor does not expose the underlying stream. GetBuffer throws UnauthorizedAccessException.

You should use this constructor instead, with publiclyVisible = true.