IntPtr to Byte[] Array C# [duplicate]

Question

I have an IntPtr (c#) given from unmanaged code. I know that this is an reference to an Byte Array with 4096 elements.

Now i want to CONVERT these data from IntPtr to Byte[] WITHOUT Marshal.Copy. Because the memory in kernel space is already allocated. I only want to interprete those data as an byte array.

I know that there a function "InteropUtils.ConvertIntPtrToByteArray-Methode" but it is only available for smart Devices etc.

Maybe somebody had an better idea?

Maybe this will help: stackoverflow.com/questions/713324/how-to-cast-intptr-to-byte/… — Ahmad Al Sayyed
– Ahmad Al Sayyed, Commented Sep 25, 2014 at 9:22
@DavidG i thought you didnt read my question. I DONT want to use the Marshal.Copy() method. — REMberry
– REMberry, Commented Sep 25, 2014 at 9:30

Victor Victis · Accepted Answer · 2014-09-25 11:11:16Z

0

What you asked is not possible because an IntPtr represents an unmanaged memory region, while a byte[] array represents a managed memory region. It is not possible to treat an unmanaged region as a managed one.

You must either copy the data to a managed region (through Marshal.Copy), or use an unsafe code to manipulate it directly.

answered Sep 25, 2014 at 11:11

Victor Victis

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