allocating "unmanaged" memory in c#

c# memory unmanaged
Blitzz picture Blitzz · Apr 15, 2010 · Viewed 36.5k times · Source

I'm writting a program in c# that uses a C++ library, and for some reason I need to allocate an unmanaged buffer to pass it to the lib. Is there a way to do this in c# ? Basically I would just need to do a malloc in C#...

Thanks

Answer

Andrew Hare picture Andrew Hare · Apr 15, 2010

Try something like this:

using System;
using System.Runtime.InteropServices;

class Example
{
    static void Main()
    {
        IntPtr pointer = Marshal.AllocHGlobal(1024);
    }
}

This uses the Marshal.AllocHGlobal method:

Allocates memory from the unmanaged memory of the process by using the specified number of bytes.

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