今天好不容易安装了VC++，就写了个Dll，并在C#中调用，效果还好，能加载成功：
class NativeMethod
{
public delegate int Operation(int m,int n);
[DllImport("kernel32", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
public static extern IntPtr LoadLibraryExA(string filePath,IntPtr hFile,int flag);
[DllImport("kernel32", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
public static extern Operation GetProcAddress(IntPtr hModule,string procName);
[DllImport("kernel32", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
public static extern bool FreeLibrary(IntPtr hModule);
}
class Program
{
static void Main(string[] args)
{
IntPtr handle = NativeMethod.LoadLibraryExA(@"E:\Program Files\Microsoft Visual Studio\MyProjects\DllLib\Debug\DllLib",IntPtr.Zero,0);
NativeMethod.Operation Add = NativeMethod.GetProcAddress(handle,"Add");
int result = Add(2,3);
NativeMethod.FreeLibrary(handle);
}
}
那个C++的Dll中就一个int Add(int nLeft,int nRight)函数。
