函数定义，从C到.NET

Question

I have some C code which I have converted into a DLL. I need to call the DLL from a C# program. I'm getting the error "Attempted to read or write protected memory. This is often an indication that other memory is corrupt."

So, I believe that I haven't converted my function prototype right which is leading to memory leaks.

The function prototype in C is

int __stdcall karacell_bridge( int argumentCount, char **argContent)

Is this a correct conversion of the function prototype in C# DLL call?

[DllImport("KaracellLib.dll", EntryPoint = "karacell_bridge@8", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Ansi, ExactSpelling = true)]
public static extern int karacell_bridge(int argumentCount, [In, Out]string[] argContent);

Answer 1

No. You'd need to marshal the second argument. I'm not sure if there's a safe PInvoke way to marshal modifiable arrays of strings; It seems like there would be many failure modes here. Perhaps you could try converting the array of strings to an array of char * .