tapi.dll错误消息

本文介绍了tapi.dll错误消息的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

嗨朋友们，

类型'OpenNETCF.Tapi.LINEINITIALIZEEXPARAMS'不能作为非托管结构封送;不能计算有意义的大小或偏移量。 plz帮助以上错误。感谢提前。

Hi Friends,

Type 'OpenNETCF.Tapi.LINEINITIALIZEEXPARAMS' cannot be marshaled as an unmanaged structure; no meaningful size or offset can be computed. plz help for above error. Thanks for advance.

推荐答案

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using OpenNETCF.Tapi;
using System.Runtime.InteropServices ;


public partial class Mobile_mSource_Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string myIMEIstring = getIMEIInfo();
        Label2.Text = "Mobile Number:" + myIMEIstring;
    }

    [DllImport("cellcore.dll")]
    internal static extern int lineGetGeneralInfo(IntPtr hLine, byte[] bCache);

    // code to get IMEI
    private string getIMEIInfo()
    {
        string IMEI;
        Tapi t = new Tapi();
        t.Initialize();
        Line _line = t.CreateLine(0, LINEMEDIAMODE.INTERACTIVEVOICE, LINECALLPRIVILEGE.MONITOR);

        byte[] buffer = new byte[512];
        //write size
        BitConverter.GetBytes(512).CopyTo(buffer, 0);

        if (lineGetGeneralInfo(_line.hLine, buffer) != 0)
        {
            throw new System.ComponentModel.Win32Exception(System.Runtime.InteropServices.Marshal.GetLastWin32Error(), "TAPI Error: " + System.Runtime.InteropServices.Marshal.GetLastWin32Error().ToString("X"));
        }

        int serialsize = BitConverter.ToInt32(buffer, 36);
        int serialoffset = BitConverter.ToInt32(buffer, 40);
        IMEI = System.Text.Encoding.Unicode.GetString(buffer, serialoffset, serialsize);
        IMEI = IMEI.Substring(0, IMEI.IndexOf(Convert.ToChar(0)));


        _line.Dispose();
        t.Shutdown();
        return (IMEI);
    }
}

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