从C++程序中访问C++ DLL

bool __stdcall __declspec(dllexport) InitHW(char *name, char *model, int& type)

因此,我尝试的代码如下所示,它给出了system.AccessViolation异常:

[DllImport("extIO_IC7610.dll", CallingConvention = CallingConvention.Cdecl)]
public unsafe static extern bool InitHW(string name, string model, int type);

private unsafe void Initialize()
{
    try
    {
        bool result;

        string name = "Test";
        string model = "Model";
        int type = 3;

        result = InitHW(name, model, type);
    }
    catch (Exception ex)
    {

    }
}

有人能告诉我我在理解上的错误吗?

根据评论,我将事情更改为如下:

[DllImport("extIO_IC7610.dll", CallingConvention = CallingConvention.Cdecl)]
[return: MarshalAs(UnmanagedType.I1)] 
public unsafe static extern bool InitHW(string name, string model, ref int type);

unsafe private void Initialize())
{

    try
    {
        bool result;

        string name = ""; 
        string model = ""; 
        int type = 3;
        result = InitHW(name, model, ref type);

    }
    catch (Exception ex)
    {

    }
}

这仍然不起作用。我现在得到一个错误,堆栈是不平衡的,因为签名不匹配。我认为字符串是正确的,但是&int参数可能仍然是一个问题。 汤姆