public static void Main() { byte [] str = new byte [21]; struct_in_dll data = new struct_in_dll(); data.count_ = 5; int [] ia = new int [5]; ia[0] = 2; ia[1] = 3; ia[2] = 5; ia[3] = 8; ia[4] = 13; GCHandle gch = GCHandle.Alloc(ia); data.data_ = Marshal.UnsafeAddrOfPinnedArrayElement(ia, 0); int ret = func_in_dll(5, str, ref data); Console.WriteLine("Return Value: " + ret); Console.WriteLine("String filled in DLL: " + System.Text.Encoding.ASCII.GetString(str)); }
private static extern int func_in_dll(int i, [MarshalAs(UnmanagedType.LPArray)] byte [] str, ref struct_in_dll data);