未处理DIRECTORYNOTFOUNDEXCEPTION解决方法

未处理DIRECTORYNOTFOUNDEXCEPTION
如图：


有关代码如下：

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.IO;

using System.Collections;

using SHF_BT;

using SHF_DA;

using SHF_UI;



namespace MES64G08_111_UI

{

    public partial class uiMES64G08_111_CourseShow : SHF_UI.uiSHF_CourseBase

    {

        #region 局部变量

        private btSHFPage page;

        private btSHFPages pages;

        private btSHFUserLogin userLogin;

        private string path = Directory.GetCurrentDirectory() + "..\\..\\..\\..\\SHFDB\\Text\\";


        #endregion


        #region 构造函数

        public uiMES64G08_111_CourseShow()

        {

            InitializeComponent();

        }

           //从test调入时的构造函数

        public uiMES64G08_111_CourseShow(Form callForm, btSHFUserLogin callLog, btSHFPage callPage)

            : base(callForm, callLog)

        {

            InitializeComponent();

            this.page = callPage;

            this.userLogin = callLog;

            pages = new btSHFPages();

        }

        #endregion


        #region 窗口载入

        private void uiMES64G08_111_CourseShow_Load(object sender, EventArgs e)

        {


        }

        #endregion


        #region 在窗口中显示信息

        private void showInfo()//在窗口中显示教学信息

        {


            string path1 = path + page.TextInfo;

            this.readFile(path1, this.richTextBox1);

        }

        #endregion


        #region 读取文本文件的内容(文本文件编码方式:UTF-8)

        public void readFile(string path, RichTextBox richTextBox)

        {

            richTextBox1.Clear();

            richTextBox1.SelectionAlignment = HorizontalAlignment.Left;

            richTextBox1.SelectionIndent = 20;

            richTextBox1.SelectionHangingIndent = -20;

            richTextBox1.Multiline = true;

            StreamReader din = File.OpenText(path);

            String str;

            ArrayList al = new ArrayList();


            while ((str = din.ReadLine()) != null)

            {

                al.Add(str);

            }


            foreach (string s in al)

            {

                richTextBox1.SelectedText += s;

                richTextBox1.SelectedText += "\r\n";

            }

            din.Close();

        }