C#串口通讯usbcan2进来99我

我用的周力功的CAN口，可以连接上，发不了数据，强人帮我！~谢谢using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using Microsoft.VisualBasic;
namespace TestCan
{
    public partial class Form1 : Form
    {
        int m_devtype = 3;//设备类型号        int m_devind = 0;//设备索引号
        int m_canid = 0;//can口ID
        public Form1()
        {
            InitializeComponent();
        }        private void button1_Click(object sender, EventArgs e)
        {
            VCI_INIT_CONFIG InitConfig = new VCI_INIT_CONFIG();
            InitConfig.AccCode = 00;
            InitConfig.AccMask = -1;
            InitConfig.Filter_Renamed = 1;
            InitConfig.mode = 0;
            InitConfig.Timing0 = 0;//测试....
            InitConfig.Timing1 = 20;
            VCI_CloseDevice(m_devtype, m_devind);//调用DLL
            if (VCI_OpenDevice(m_devtype, m_devind, 0) != 1)//reserverd
            {
                int i = VCI_OpenDevice(3, 0, 9600);
                MessageBox.Show("打开设备错误" + i);
                return;
            }
            if (VCI_InitCAN(3, 0, 0, ref InitConfig) == 1)//canid
            {
                if (VCI_StartCAN(3, 0, 0) == 1)//canid
                {
                    VCI_CAN_OBJ vio = new VCI_CAN_OBJ();
                    vio.DataLen = 8;
                    vio.ExternFlag = 0;
                    vio.RemoteFlag =0;
                    vio.SendType = 2;
                    vio.ID = 1;
                    vio.data0 = (byte)11;
                    vio.data1 = (byte)11;
                    vio.data2 = (byte)11;
                    vio.data3 = (byte)11;
                    vio.data4 = (byte)11;
                    vio.data5 = (byte)11;
                    vio.data6 = (byte)11;
                    vio.data7 = (byte)11;
                    vio.Reserved0 = 0;
                    vio.Reserved1 = 0;
                    vio.Reserved2 = 0;
                    
                    int smap = VCI_Transmit(3, 0, 0, ref vio, 1);                    MessageBox.Show(smap.ToString());
                }
            }
            else
            {
                MessageBox.Show("初始化错误");
                return;
            }
        }
        [DllImport("ControlCAN.dll")]
        static extern int VCI_CloseDevice(int Devicetype, int DeviceInd);//关闭设备
        [DllImport("ControlCAN.dll")]
        static extern int VCI_OpenDevice(int Devicetype, int DeviceInd, int Reserved);//打开设备
        [DllImport("ControlCAN.dll")]
        static extern int VCI_InitCAN(int Devicetype, int DeviceInd, int CANInd, ref VCI_INIT_CONFIG InitConfig);//初始化指定CAN
        [DllImport("ControlCAN.dll")]
        static extern int VCI_StartCAN(int Devicetype, int DeviceInd, int CANInd);//启动CAN
        [DllImport("ControlCAN.dll")]
        static extern int VCI_ResetCAN(int Devicetype, int DeviceInd, int CANInd);//复位CAN
        [DllImport("ControlCAN.dll")]
        static extern int VCI_Transmit(int Devicetype, int DeviceInd, int CANInd, ref VCI_CAN_OBJ vio, int length);//发送数据
        [DllImport("ControlCAN.dll")]
        static extern int VCI_ReadErrInfo(int Devicetype, int DeviceInd, int CANInd, ref VCI_ERR_INFO errinfo);//接收最后1条错误信息
        [DllImport("ControlCAN.dll")]
        static extern int VCI_Receive(int Devicetype, int DeviceInd, int CANInd, ref VCI_CAN_OBJ vri, int length, int WaitTime);//接收信息
    }
}