请教:软件性能问题,数据多了就假死,求性能解决

Question

首先贴代码吧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.Net;
using System.Web;
using System.Threading;namespace WindowsApplication1
{
    public partial class FrmMain : Form
    {
        public string url;
        public int Intcount = 0;
        public FrmMain()
        {
            InitializeComponent();
            notifyIcon1.Visible = false;
        }
        private void button2_Click(object sender, EventArgs e)
        {
           Txtci.Text = "";
           Intcount =0;
           this.openFileDialog1.Filter = "*.txt|*.txt";
           openFileDialog1.FileName = "";
           DialogResult ok=openFileDialog1.ShowDialog();
           if (ok==DialogResult.OK)
           {
               StreamReader sr = new StreamReader(openFileDialog1.FileName, Encoding.GetEncoding("GBK"));
               string stringtemp;
               stringtemp = sr.ReadLine();
               Txtci.Text = stringtemp + "\r\n";
               while (stringtemp != null)
               {
                   if (stringtemp != null)
                   {
                       stringtemp = sr.ReadLine();
                       Txtci.Text += stringtemp + "\r\n";
                       Intcount++;
                   }
               }
               sr.Close();
               label4.Text = Intcount.ToString()+"条";
               progressBar1.Maximum = Intcount;
           }
        }        private void button3_Click(object sender, EventArgs e)
        {
            this.Size = new Size(341, 255);
        }        private void button4_Click(object sender, EventArgs e)
        {
            this.Size = new Size(341, 225);
            url = TxtUrl.Text;
        }        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                StreamReader sr = new StreamReader(openFileDialog1.FileName, Encoding.GetEncoding("GBK"));
                string stringtemp;
                stringtemp = sr.ReadLine();
                Fcpost(stringtemp);
                while (stringtemp != null)
                {
                    stringtemp = sr.ReadLine();
                    if (stringtemp!=null)
                    {
                        Fcpost(stringtemp);
                    }
                }
            }
            catch (Exception x)
            {                MessageBox.Show(x.ToString());
            }        }        private string Fcpost(string _temp)
        {
            // CookieContainer cookieContainer = new CookieContainer(); // 声明CookieContainer对象
            string postData = "keyword=" + System.Web.HttpUtility.UrlEncode(_temp, Encoding.GetEncoding("GBK"));
            string contentType = "application/x-www-form-urlencoded";
            CookieContainer cc = new CookieContainer();
            byte[] byteArray = Encoding.UTF8.GetBytes(postData); // 转化
            HttpWebRequest webRequest2 = (HttpWebRequest)WebRequest.Create(new Uri(url));
            ///  webRequest2.CookieContainer = cc;
            webRequest2.Method = "POST";
            webRequest2.ContentType = contentType;
            webRequest2.ContentLength = byteArray.Length;
            Stream newStream = webRequest2.GetRequestStream();
            newStream.Write(byteArray, 0, byteArray.Length);    //写入参数
            newStream.Close();
            HttpWebResponse response2 = (HttpWebResponse)webRequest2.GetResponse();
            StreamReader sr2 = new StreamReader(response2.GetResponseStream(), Encoding.Default);
            string text2 = sr2.ReadToEnd();
            progressBar1.Value++;
            if (progressBar1.Value == progressBar1.Maximum)
            {
                MessageBox.Show("提交完毕!");
                progressBar1.Value = 0;
            }
            Thread.Sleep(3000);
            return text2;
        }        private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            notifyIcon1.Visible = false;  //设置托盘图标隐藏
            this.ShowInTaskbar = true;  //让窗体在任务栏中显示
            this.WindowState = FormWindowState.Normal;  //还原原来窗体
        }        private void FrmMain_SizeChanged(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)  //判断是否最小化
            {
                this.Activate();
                this.ShowInTaskbar = false;  //不显示在系统任务栏
                notifyIcon1.Visible = true;  //托盘图标可见
                notifyIcon1.ShowBalloonTip(300, "自动提交工具", "版权所有-海军", ToolTipIcon.Info);
            }
        }
    }
} PS:
在提交Fcpost方法的时候 数据过去.我采用了主线程休眠Thread.Sleep(3000);
然后数据多了.提交速度快了 就程序假死了.但是提交还是在继续.只是页面什么都不能按了.
求解答.
如果用多线程做,应该能解决类似的问题么 ?
采用
Thread.Sleep(3000);方法不能限制提交的时间快慢么?
谢谢各位解答了

Answer 1

忌讳大量循环中操作窗体控件
Txtci.Text += stringtemp + "\r\n";
这会触发无数次Paint(窗体绘制)用StringBuilder拼接字符串，然后一次性赋值给Txtci.Text

Answer 2

不要用：Thread.Sleep(3000);
加一个Application.DoEvents();让程序相应消息，就不会假死了。                while (stringtemp != null)
                {
                    stringtemp = sr.ReadLine();
                    if (stringtemp!=null)
                    {
                        Fcpost(stringtemp);
                        Application.DoEvents();
                    }
                }

Answer 3

按楼上的改吧如果Fcpost执行时间比较长,就将它新建一个线程去执行

Answer 4

用 BackgroundWorker 类进行操作吧！

Answer 5

谢谢usersname兄弟..线程我是个新手.可以给点这方面的资料么？
libinguest兄弟　进度条我做了的

Answer 6

using System.Threading;public void DoWork()
{
    Thread.Sleep(5000); // 这里换成楼主下载资源的循环过程。
    // 此处不能直接操作和界面相关的控件
    Invoke(new EventHandler(DoInvoke)); //  线程同步，访问窗体控件
}private void DoInvoke(object sender, EventArgs e)
{
    button1.Enabled = true; // 线程同步，访问窗体控件，比如控件进度条
}private void button1_Click(object sender, EventArgs e)
{
    button1.Enabled = false;
    Thread vThread = new Thread(new ThreadStart(DoWork));
    vThread.Start();
}

Answer 7

public void DoWork()
{
    Thread.Sleep(5000); // 这里换成楼主下载资源的循环过程。
    //这里写自己的循环代码吧?
    Invoke(new EventHandler(DoInvoke)); //  线程同步，访问窗体控件
}

Answer 8

public void DoWork()
{
try
            {
                StreamReader sr = new StreamReader(openFileDialog1.FileName, Encoding.GetEncoding("GBK"));
                string stringtemp;
                stringtemp = sr.ReadLine();
                Fcpost(stringtemp);
                while (stringtemp != null)
                {
                    stringtemp = sr.ReadLine();
                    if (stringtemp!=null)
                    {
                        Fcpost(stringtemp);
                    }
                }
            }
            catch (Exception x)
            {                //MessageBox.Show(x.ToString());
            }
}Fcpost中访问去掉窗体控件直接访问        private string Fcpost(string _temp)
        {
            // CookieContainer cookieContainer = new CookieContainer(); // 声明CookieContainer对象
            string postData = "keyword=" + System.Web.HttpUtility.UrlEncode(_temp, Encoding.GetEncoding("GBK"));
            string contentType = "application/x-www-form-urlencoded";
            CookieContainer cc = new CookieContainer();
            byte[] byteArray = Encoding.UTF8.GetBytes(postData); // 转化
            HttpWebRequest webRequest2 = (HttpWebRequest)WebRequest.Create(new Uri(url));
            ///  webRequest2.CookieContainer = cc;
            webRequest2.Method = "POST";
            webRequest2.ContentType = contentType;
            webRequest2.ContentLength = byteArray.Length;
            Stream newStream = webRequest2.GetRequestStream();
            newStream.Write(byteArray, 0, byteArray.Length);    //写入参数
            newStream.Close();
            HttpWebResponse response2 = (HttpWebResponse)webRequest2.GetResponse();
            StreamReader sr2 = new StreamReader(response2.GetResponseStream(), Encoding.Default);
            string text2 = sr2.ReadToEnd();
            /*progressBar1.Value++;
            if (progressBar1.Value == progressBar1.Maximum)
            {
                MessageBox.Show("提交完毕!");
                progressBar1.Value = 0;
            }
            Thread.Sleep(3000);*/
            return text2;
        }