[.Net 5.0] 4.非托管内存数据复制

        [DllImport("kernel32.dll")]
        private static extern void CopyMemory(IntPtr Destination, IntPtr Source, int Length);

原来一直用CopyMemory，.Net5.0说找不到入口点了

        [DllImport("msvcrt.dll", EntryPoint = "memcpy", CallingConvention = CallingConvention.Cdecl, SetLastError = false)]
        private static extern IntPtr memcpy(IntPtr dest, IntPtr src, int count);

还好 memcpy还是支持的。不知所以然...

搜了一下，还就是入口点没写对

        [DllImport("kernel32.dll", EntryPoint = "RtlMoveMemory", CharSet = CharSet.Ansi)]

这样就OK了。