default.aspx.cs

这是asp.net^和Visual C++Sharp编写的串并口通讯的书籍 源代码

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.IO;
public partial class Default2 : System.Web.UI.Page
{
    public static string pwd;
    public static int k;
    public static TcpClient tcpc;
    public static string popserver;
    public static StreamReader sr;
    public static string strRet;
    protected void Page_Load(object sender, EventArgs e)
    {
       
    }
    private string SendPopCmd(TcpClient tcpc,string strCmd)
    {
      Byte[] arrCmd;
      string strRet;
      Stream s;
      s=tcpc.GetStream();
      strCmd = strCmd + "\r\n";
      arrCmd= Encoding.Default.GetBytes(strCmd.ToCharArray());
      s=tcpc.GetStream();
      s.Write(arrCmd, 0, strCmd.Length);
      strRet=sr.ReadLine();
      return strRet;
    }
    private string Logon(TcpClient tcpc,string user,string pass)
    {
      //这个函数的功能是 对 获得联结的用户 身份进行验证
      //发送 用户代码      
      string strRet;
      strRet=SendPopCmd(tcpc,"user " + user);
      strRet=SendPopCmd(tcpc,"pass " + pass);
      return strRet;
    }
    private string[] StaticMailBox(TcpClient tcpc)
    { 
       string strRet;
       strRet=SendPopCmd(tcpc,"stat");
       if(JudgeString(strRet)!="+OK")
       {
         return "-ERR -ERR".Split(" ".ToCharArray());
        }
       else
        {
            string[] arrRet = strRet.Split(" ".ToCharArray());
            return arrRet;
        }
      }
    private string JudgeString(string strCheck)
    {
       if(strCheck.Substring(0,3)!="+OK")
       {
         return "-ERR";
       }
       else
         return "+OK";
    }
    private string[] PopMail(TcpClient tcpc, int i)
    {
        string strRet;
        string[] arrRet=new string[20];
        bool strBody = false;
        string[] arrTemp;
        strRet = SendPopCmd(tcpc, "retr " + i.ToString());
        if (JudgeString(strRet) != "+OK")
        {
            return "-ERR -ERR".Split(" ".ToCharArray());
        }
        Response.Write("\n<BR>");
        Response.Write("<font color=red>\n<BR>");
        arrRet[0] = "+OK";
        while (sr.Peek() != 46)
        {
            strRet = sr.ReadLine();
            arrTemp = strRet.Split(":".ToCharArray());
            if (strRet == "")
                strBody = true; //现在开始接收 Body 的信息
            if (arrTemp[0] == "Date")
                arrRet[1] = arrTemp[1];  //信件的发送日期
            if (arrTemp[0] == "From")
                arrRet[2] = (arrTemp[1].Substring(arrTemp[1].LastIndexOf("<")+1)).Replace(">"," ");  //发信人
            if (arrTemp[0] == "To")
                arrRet[3] = (arrTemp[1].Substring(arrTemp[1].LastIndexOf("<") + 1)).Replace(">", " ");  //收信人
            if (arrTemp[0] == "Subject")
                arrRet[4] = arrTemp[1].ToString();  //主题
            if (strBody)
                arrRet[5] = arrRet[5] + strRet + "\n";
        }
        return arrRet;
    }
    protected void Button2_Click(object sender, EventArgs e)//连接邮箱
    {
        string user = TextBox2.Text.ToString();
        string pass = TextBox3.Text.ToString();
        string[] arrRet;
        pwd = pass;
        popserver = TextBox1.Text.ToString();
        tcpc = new TcpClient();
        try
        {
            tcpc.Connect(popserver,110);
            sr = new StreamReader(tcpc.GetStream(), Encoding.Default);
            sr.ReadLine();
            strRet = Logon(tcpc, user, pass);
            if (JudgeString(strRet) != "+OK")
            {
                Response.Write("对不起，没有这个用户/密码 不匹配");
                return;
            }
            arrRet = StaticMailBox(tcpc);
            if (arrRet[0] != "+OK")
            {
                Response.Write("出错了！");
                return;
            }
            Page.RegisterStartupScript("","<script>alert('当前的用户：" + user + "的信箱中共有" + arrRet[1] + "封,共占" + arrRet[2] + "Byte"+"')</script>");
            k = Convert.ToInt32(arrRet[1]);
            Button2.Enabled = false;
            Button1.Enabled = true;
            Button3.Enabled = true;
            TextBox1.Enabled = false;
            TextBox2.Enabled = false;
            TextBox3.Enabled = false;
        }
        catch (Exception ex)
        {
            Response.Write("Could not connect to server!");
        }
    }
    public static string Base64Decode(string str)
    {
        return Encoding.UTF8.GetString(Convert.FromBase64String(str));
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        if (TextBox4.Text != "")
        {
            if (Convert.ToInt32(TextBox4.Text) > k || Convert.ToInt32(TextBox4.Text) <= 0)
            {
                Page.RegisterStartupScript("", "<script>alert('输入的索引错误')</script>");
            }
            else
            {
                string[] arrRets;
                arrRets = PopMail(tcpc, Convert.ToInt32(TextBox4.Text));
                TextBox5.Text = "当前是第" + TextBox4.Text + "封信" + "\n" + "邮件日期：" + arrRets[1] + "\n" + "发信人：" + arrRets[2] + "\n" + "收信人：" + arrRets[3] + "\n" + "邮件主题：" +Base64Decode(arrRets[4]) + "\n" + "邮件内容：" +Base64Decode(arrRets[5]) + "\n";
            }
        }
        else
        {
            Page.RegisterStartupScript("","<script>alert('邮件索引错误')</script>");
        }
    }
    protected void TextBox4_TextChanged(object sender, EventArgs e)
    {

    }
    protected void Button3_Click(object sender, EventArgs e)
    {
        tcpc.Close();
        TextBox1.Enabled = true;
        TextBox2.Enabled = true;
        TextBox3.Enabled = true;
        Button2.Enabled = true;
        Button3.Enabled = false;
        Button1.Enabled = false;
        TextBox5.Text = "";
        TextBox4.Text = "";
        TextBox3.Text = "";
        TextBox2.Text = "";
        TextBox1.Text = "";
    }
}