Question

我试图在c＃.net中调用本机api。任何人都可以帮我翻译下面的代码到C＃调用？我真的很感激。

dwResult = ::MprAdminMIBServerConnect( pwcComputerName.GetText(), &hMibServer );

dwResult = ::MprAdminServerGetInfo( hMibServer, 0, (LPBYTE*)&pServerBuf );

// I want to read the below variables as string
pInObjectEntry->Put(L"rastotalportstoconnectto", pServerBuf->dwTotalPorts );
pInObjectEntry->Put(L"rasportsinuse", pServerBuf->dwPortsInUse );

以下是示例代码，任何人都可以告诉我如何读取dwTotalPorts和dwPortsInUse的值？

  class RASCollector
    {
        [DllImport("mprapi.dll", SetLastError = false)]
        public static extern UInt32 MprAdminMIBServerConnect([MarshalAs(UnmanagedType.LPWStr)] string lpwsServerName, out IntPtr phMibServer);

        [DllImport("mprapi.dll", SetLastError = false)]
        public static extern UInt32 MprAdminServerGetInfo(IntPtr phMprServer, UInt32 dwLevel, out byte[] pServerBuf);

        public void Run()
        {
            IntPtr hMibServer = new IntPtr();
            UInt32 result;

            result = MprAdminMIBServerConnect("localhost", out hMibServer);

            byte[] pServerBuf;

            result = MprAdminServerGetInfo(hMibServer, 0, out pServerBuf);
        }
    }

Answer 1

通过使用InterOP完成。您需要导入这样的每个函数：

using System.Runtime.InteropServices;

[DllImport("mprapi.dll", SetLastError = false)]
public static extern UInt32 MprAdminMIBServerConnect([MarshalAs(UnmanagedType.LPWStr)] string lpwsServerName, out IntPtr phMibServer);

MSDN库中定义的数据类型应转换为其C＃数据类型对应项。您应该查看这篇文章以获取更多信息： http://msdn.microsoft.com/en-us/library/ac7ay120.aspx

有关在C＃中编组复杂数据结构和指针的更多信息： http://blogs.msdn.com/b/dsvc/archive/2009/02/18/marshalling-complicated-structures-using-pinvoke.aspx

在.net中调用mprapi.dll函数

1 个答案: