郁闷 System.IO.FileNotFoundException

Question

环境： VS2005  XP我的程序不知怎么回事，大多数情况下编译后能正确执行，但有时候会在执行时遇到System.IO.FileNotFoundException异常：
System.IO.FileNotFoundException 系统找不到指定的文件。 (异常来自 HRESULT:0x80070002)异常提示信息到此为止，我也不知道是找不到啥文件。不过不用修改代码，重新编译后，程序就能正常执行了(或者重启机器也行)。请大虾们指点一下，thanks!
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附带关于我项目的一些信息项目名称：SaveWebPage
using System;
using System.Collections.Generic;
using System.Collections;
using System.IO;
using System.Text;
using System.Windows.Forms;
using mshtml;
using System.Net;
using System.Net.Cache;
using System.Text.RegularExpressions;
using System.Threading;异常出现在执行：string dt = this.WebBrowser1.DocumentText;时。

Answer 1

        public byte[] CreateMhtData()
        {
            SaveHTMLDocument(ControlObj.Document);            MemoryStream ms = new MemoryStream();
            string boundary = "\r\n\r\n------=_NextPart_000_0000_01CA095D.30E12370\r\n";
            string end = "\r\n\r\n------=_NextPart_000_0000_01CA095D.30E12370--";            string head = "From: <由 InfiKeeper 保存>\r\n";
            head += ("Subject: " + ControlObj.DocumentTitle + "\r\n");
            head += "Date: " + DateTime.Now.Date.ToString() + "\r\n";
            head += "MIME-Version: 1.0\r\n";
            head += "Content-Type: multipart/related;\r\n";
        head += "  type=\"text/html\";\r\n";
        head += "  boundary=\"----=_NextPart_000_0000_01CA095D.30E12370\"\r\n";
            head += "\r\n";            byte[] b0 = System.Text.Encoding.GetEncoding("GB2312").GetBytes(head);   
            ms.Write(b0,0,b0.Length);            //以下获取CharSet的代码来自网络
            string dt = "";
            try
            { dt = this.ControlObj.DocumentText; }
            catch (System.IO.FileNotFoundException e_)
            { throw new SaveWebPageException(e_.Message,980003); }            Match charSetMatch = Regex.Match(dt, "<meta([^<]*)charset=([^<]*)\"", RegexOptions.IgnoreCase | RegexOptions.Multiline); 
            string CharSet = charSetMatch.Groups[2].Value; 出错前后代码

Answer 2

        public byte[] CreateMhtData()
        {
            SaveHTMLDocument(ControlObj.Document);            MemoryStream ms = new MemoryStream();
            string boundary = "\r\n\r\n------=_NextPart_000_0000_01CA095D.30E12370\r\n";
            string end = "\r\n\r\n------=_NextPart_000_0000_01CA095D.30E12370--";            string head = "From: <由 InfiKeeper 保存>\r\n";
            head += ("Subject: " + ControlObj.DocumentTitle + "\r\n");
            head += "Date: " + DateTime.Now.Date.ToString() + "\r\n";
            head += "MIME-Version: 1.0\r\n";
            head += "Content-Type: multipart/related;\r\n";
        head += "  type=\"text/html\";\r\n";
        head += "  boundary=\"----=_NextPart_000_0000_01CA095D.30E12370\"\r\n";
            head += "\r\n";            byte[] b0 = System.Text.Encoding.GetEncoding("GB2312").GetBytes(head);   
            ms.Write(b0,0,b0.Length);            //以下获取CharSet的代码来自网络
            string dt = "";
            try
            { dt = this.ControlObj.DocumentText; }
            catch (System.IO.FileNotFoundException e_)
            { throw new SaveWebPageException(e_.Message,980003); }            Match charSetMatch = Regex.Match(dt, "<meta([^<]*)charset=([^<]*)\"", RegexOptions.IgnoreCase | RegexOptions.Multiline); 
            string CharSet = charSetMatch.Groups[2].Value;             string html = "------=_NextPart_000_0000_01CA095D.30E12370\r\n";
            html += "Content-Type: text/html;\r\n";
            html += ("  charset=" + "\"" + CharSet +"\"" + "\r\n" );
        html += "Content-Transfer-Encoding: quoted-printable\r\n";
            html += ("Content-Location: " + this.URL +"\r\n\r\n");            byte[] b1 = System.Text.Encoding.GetEncoding("GB2312").GetBytes(html);
            ms.Write(b1, 0, b1.Length);            bool charChange = false;
            if (string.Equals(CharSet, "unicode"))
            { 
                CharSet = "utf-16";
                charChange = true;
            }            StreamReader sr = new StreamReader(this.ControlObj.DocumentStream, System.Text.Encoding.GetEncoding(CharSet), true);
            string sHtml = sr.ReadToEnd();            if (charChange)
            {
                CharSet = "utf-8";
                sHtml.Replace("charset=unicode", "charset=utf-8");
                byte[] temp1 = System.Text.Encoding.GetEncoding("utf-16").GetBytes(sHtml);
                byte[] temp2 = Encoding.Convert(System.Text.Encoding.GetEncoding("utf-16"), System.Text.Encoding.GetEncoding("utf-8"), temp1);
                sHtml = System.Text.Encoding.GetEncoding("utf-8").GetString(temp2);
            }            string sss = Encode(sHtml, CharSet);
            byte[] temp10 = System.Text.Encoding.GetEncoding(CharSet).GetBytes(sss); 
            ms.Write(temp10, 0, temp10.Length);            for (int i = 0; i < ContentParts.Count;++i )
            {
                byte[] bb = System.Text.Encoding.GetEncoding("GB2312").GetBytes(boundary);   
                byte[] dd = ((ContentPart)ContentParts[i]).GetContent();
                ms.Write(bb, 0, bb.Length);
                ms.Write(dd,0,dd.Length);
            }            byte[] be = System.Text.Encoding.GetEncoding("GB2312").GetBytes(end); 
            ms.Write(be, 0, be.Length);
            ms.WriteByte(13);
            ms.Position = 0;            byte[] result = Tools.StreamToBytes(ms);
            return result;
        }//end fun

Answer 3

我用你的代码没有任何问题，你的web控件指向哪个地址？

Answer 4

没看到webbrower，应该是通过WebBrowser.DocumentText，再获取页面文件时问题