网络程序设计课程设计报告 WEB浏览器的设计与实现.doc

网络程序设计课程设计报告专 业 网 络 工 程 学 号 09102428 姓 名 胡赛 2013 年 1 月 9 日 web浏览器设计1、 题目及要求（一）题目：web浏览器设计（2） 开发工具：，visual studio 2010（3） 运行环境：WindowsXP/7操作系统（4） 功能实现：1.有合理的首页页面设计，背景柔和2. 是利用C#编写程序，该浏览器简单但功能齐全3. 设计登陆页面1. 输入地址栏，支持所有的网址，并有转到功能2. 实现前进、后退、刷新等功能 3. 使用时同样可以最大化最小化4. 可以存储网址，进行网内连接5. 按钮是利用画图工具进行拷贝下来的6. 地址默认为百度7. 进度条的显示2、 系统概要设计(一)主要步骤 创建WebBrowser 首先使用Visual Studio 2010 Windows Forms应用程序，在这个程序中，给窗体（Form）添加一个ToolStrip和一个WebBrowser控件，在ToolStrip控件中，添加了一个Label，TextBox和一些Button控件。从工具箱拖动一个WebBrowser控件到Form上，根据Form的大小调整WebBrowser控件的大小和停靠位置，并将其停靠在底部。（二）主要函数：Navigate是WebBrowser中用来打开URL的一个方法。 webBrowser1.Navigate(new Uri(url)）WebBrowser控件也内置了一些浏览器功能，如转到主页，前进，后退，刷新，保存，打印和其它功能，下面的代码片段显示了如何使用GoForeward，GoBack，GoHome和Refresh方法。3、 系统设计细节（一）浏览器主界面如图1-1图1-1浏览器主界面1. 输入地址栏，在ToolStrip中添加一个toolStripComboBox1用于输入地址以下代码用于转到地址栏中的地址private void toolStripButton3_Click(object sender, EventArgs e) if (String.IsNullOrEmpty(toolStripComboBox1.Text) /判断地址栏是否为空 MessageBox.Show(请输入有效地址); toolStripComboBox1.Focus(); return; OpenURL(toolStripComboBox1.Text); /把地址栏中的网址传到OpenURL方法中 /该方法用于根据传入的url，在webbrowser中显示 private void OpenURL(string url) if (!url.StartsWith(http:/) & !url.StartsWith(https:/) url = http:/ + url; try webBrowser1.Navigate(new Uri(url); toolStripComboBox1.Items.Add(url); catch (System.UriFormatException) return; 2.实现前进、后退、刷新等功能 private void toolStripButton1_Click(object sender, EventArgs e) if (webBrowser1.CanGoBack) webBrowser1.GoBack(); /后退 private void toolStripButton2_Click(object sender, EventArgs e) if(webBrowser1.CanGoForward) /前进 webBrowser1.GoForward(); private void toolStripButton4_Click(object sender, EventArgs e) webBrowser1.Refresh(); /刷新 private void toolStripButton5_Click(object sender, EventArgs e) webBrowser1.GoHome(); /主页（2） 可以存储网址，进行网内连接/在转到地址的同时把地址存储在文本文档中webBrowser1.Navigate(new Uri(url); toolStripComboBox1.Items.Add(url); saveURL(url);/把网址存到saveURL.Txt中 如图1-2private void saveURL(String url) FileStream fs = new FileStream(.saveURL.txt, FileMode.Append); StreamWriter sw = new StreamWriter(fs); sw.WriteLine(url); sw.Close();图1-2 本地文件/ 在构造方法中直接判断saveURL.txt中是否有地址，如果有，在运行程序之前把网址添加到ToolStripComboBox1中 如图1-3，1-4public Form1() InitializeComponent(); if (File.Exists(.saveURL.txt) StreamReader sr = new StreamReader(.saveURL.txt); string s = sr.ReadLine(); int i = 0; while (s != null & i+ 0) & (e.MaximumProgress 0) /已经加载数及正在加载数大于0时； toolStripProgressBar1.Maximum = Convert.ToInt32(e.MaximumProgress); /获取进度条最大值为下载文档字节总数 toolStripProgressBar1.Step = Convert.ToInt32(e.CurrentProgress); /获取已经下载字节数 toolStripProgressBar1.PerformStep(); /增加到当前位置 else if (webBrowser1.ReadyState = WebBrowserReadyState.Complete) /下载完成 toolStripProgressBar1.Value = 0; /进度条设为0 toolStripProgressBar1.Visible = false; /不显示进度条 图1-6进度条4、 课程设计总结本次课程设计我选的题目是Web浏览器设计，使用的语言是C#。在刚开始做的时候有挺多问题不懂的，但是通过去图书馆、上网查找相关资料、询问同学等方法使得问题得以解决，比如前进、后退、刷新等按钮的添加，网址的保存等，让我充分认识到C#语言功能的强大。最终程序完成了，虽然浏览器只是简单版的，仅含有一些基本功能，但是在做的过程中一边做，一边学是我的理论知识得以丰富同时锻炼了我的动手能力。本次的课程设计令我学到了很多，使我对C#这门编程语言更熟悉了，同时在课程设计的过程中，碰到问题积极查找资料、和同学交流讨论也让我收获良多。参考文献：1黄永兵. Visual Studio 2010构建Web浏览器应用程序. 51技术频道. 2011: 01-24.2王超、潘阳. Visual C#通用范例开发经典M北京电子工业出版社2008：54-101附录程序代码Form1.csusing System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;using System.IO;namespace _09102428husai public partial class Form1 : Form public Form1() InitializeComponent(); if (File.Exists(.saveURL.txt) StreamReader sr = new StreamReader(.saveURL.txt); string s = sr.ReadLine(); int i = 0; while (s != null & i+ 0) & (e.MaximumProgress 0) toolStripProgressBar1.Maximum = Convert.ToInt32(e.MaximumProgress); toolStripProgressBar1.Step = Convert.ToInt32(e.CurrentProgress); toolStripProgressBar1.PerformStep(); else if (webBrowser1.ReadyState = WebBrowserReadyState.Complete) toolStripProgressBar1.Value = 0; toolStripProgressBar1.Visible = false; private void toolStripButton3_Click(object sender, EventArgs e) if (String.IsNullOrEmpty(ToolStripComboBox1.Text) MessageBox.Show(请输入有效地址！); ToolStripComboBox1.Focus(); return; OpenURL(ToolStripComboBox1.Text); private void OpenURL(string url) if (!url.StartsWith(http:/) & !url.StartsWith(https:/) url = http:/ + url; try webBrowser1.Navigate(new Uri(url); ToolStripComboBox1.Items.Add(url); saveURL(url); catch (System.UriFormatException) return; private void saveURL(String url) FileStream fs = new FileStream(.saveURL.txt, FileMode.Append); StreamWriter sw = new StreamWriter(fs); sw.WriteLine(url); sw.Close(); private void toolStripButton1_Click(object sender, EventArgs e) if (webBrowser1.CanGoBack) webBrowser1.GoBack(); private void toolStripButton2_Click(object sender, EventArgs e) if(webBrowser1.CanGoForward) webBrowser1.GoForward(); private void toolStripButton4_Click(object sender, EventArgs e) webBrowser1.Refresh(); private void toolStripButton5_Click(object sender, EventArgs e) webBrowser1.GoHome(); private void ToolStripComboBox1_Click(object sender, EventArgs e) private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) Form1.Designer.csnamespace _09102428husai partial class Form1 / / 必需的设计器变量。 / private System.ComponentModel.IContainer components = null; / / 清理所有正在使用的资源。 / / 如果应释放托管资源，为 true；否则为 false。 protected override void Dispose(bool disposing) if (disposing & (components != null) components.Dispose(); base.Dispose(disposing); #region Windows 窗体设计器生成的代码 / / 设计器支持所需的方法 - 不要 / 使用代码编辑器修改此方法的内容。 / private void InitializeComponent() System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1); this.toolStrip1 = new System.Windows.Forms.ToolStrip(); this.toolStripButton1 = new System.Windows.Forms.ToolStripButton(); this.toolStripButton2 = new System.Windows.Forms.ToolStripButton(); this.ToolStripComboBox1 = new System.Windows.Forms.ToolStripComboBox(); this.toolStripButton3 = new System.Windows.Forms.ToolStripButton(); this.toolStripButton4 = new System.Windows.Forms.ToolStripButton(); this.toolStripButton5 = new System.Windows.Forms.ToolStripButton(); this.webBrowser1 = new System.Windows.Forms.WebBrowser(); this.toolStrip2 = new System.Windows.Forms.ToolStrip(); this.toolStripProgressBar1 = new System.Windows.Forms.ToolStripProgressBar(); this.toolStrip1.SuspendLayout(); this.toolStrip2.SuspendLayout(); this.SuspendLayout(); / / toolStrip1 / this.toolStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem this.toolStripButton1, this.toolStripButton2, this.ToolStripComboBox1, this.toolStripButton3, this.toolStripButton4, this.toolStripButton5); this.toolStrip1.Location = new System.Drawing.Point(0, 0); this.toolStrip1.Name = toolStrip1; this.toolStrip1.Size = new System.Drawing.Size(631, 25); this.toolStrip1.TabIndex = 0; this.toolStrip1.Text = toolStrip1; / / toolStripButton1 / this.toolStripButton1.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image; this.toolStripButton1.Image = (System.Drawing.Image)(resources.GetObject(toolStripButton1.Image); this.toolStripButton1.ImageTransparentColor = System.Drawing.Color.Magenta; this.toolStripButton1.Name = toolStripButton1; this.toolStripButton1.Size = new System.Drawing.Size(23, 22); this.toolStripButton1.Text = toolStripButton1; this.toolStripButton1.Click += new System.EventHandler(this.toolStripButton1_Click); / / toolStripButton2 / this.toolStripButton2.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image; this.toolStripButton2.Image = (System.Drawing.Image)(resources.GetObject(toolStripButton2.Image); this.toolStripButton2.ImageTransparentColor = System.Drawing.Color.Magenta; this.toolStripButton2.Name = toolStripButton2; this.toolStripButton2.Size = new System.Drawing.Size(23, 22); this.toolStripButton2.Text = toolStripButton2; this.toolStripButton2.Click += new System.EventHandler(this.toolStripButton2_Click); / / ToolStripComboBox1 / this.ToolStripComboBox1.Name = ToolStripComboBox1; this.ToolStripComboBox1.Size = new System.Drawing.Size(300, 25); this.ToolStripComboBox1.Click += new System.EventHandler(this.ToolStripComboBox1_Click); / / toolStripButton3 / this.toolStripButton3.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image; this.toolStripButton3.Image = (System.Drawing.Image)(resources.GetObject(toolStripButton3.Image); this.toolStripButton3.ImageTransparentColor = System.Drawing.Color.Magenta; this.toolStripButton3.Name = toolStripButton3; this.toolStripButton3.Size = new System.Drawing.Size(23, 22); this.toolStripButton3.Text = toolStripButton3; this.toolStripButton3.Click += new System.EventHandler(this.toolStripButton3_Click); / / toolStripButton4 / this.toolStripButton4.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image; this.toolStripButton4.Image = (System.Drawing.Image)(resources.GetObject(toolStripButton4.Image); this.toolStripButton4.ImageTransparentColor = System.Drawing.Color.Magenta; this.toolStripButton4.Name = toolStripButton4; this.toolStripButton4.Size = new System.Drawing.Size(23, 22); this.toolStripButton4.Text = toolStripButton4; this.toolStripButton4.Click += new System.EventHandler(this.toolStripButton4_Click); / / toolStripButton5 / this.toolStripButton5.Alignment = System.Windows.Forms.ToolStripItemAlignment.Right; this.toolStripButton5.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image; this.toolStripButton5.Image = (System.Drawing.Image)(resources.GetObject(toolStripButton5.Image); this.toolStripButton5.ImageTransparentColor = System.Drawing.Color.Magenta; this.toolStripButton5.Name = toolStripButton5; this.toolStripButton5.Size = new System.Drawing.Size(23, 22); this.toolStripButton5.Text = toolStripButton5; this.toolStripButton5.Click += new System.EventHandler(this.toolStripButton5_Click); / / webBrowser1 / this.webBrowser1.Dock = System.Windows.Forms.DockStyle.Fill; this.webBrowser1.Location = new System.Drawing.Point(0, 25); this.webBrowser1.MinimumSize = new System.Drawing.Size(20, 20); this.webBrowser1.Name = webBrowser1; this.webBrowser1.Size = new System.Drawing.Size(631, 433); this.webBrowser1.TabIndex = 1; this.webBrowser1.Url = new System.Uri(, System.UriKind.Absolute); this.webBrowser1.DocumentCompleted += new System.Windows.Forms.WebBrowserDocumentCompletedEventHandler(this.webBrowser1_DocumentCompleted); / / toolStrip2 / this.toolStrip2.Dock = System.Windows.Forms.DockStyle.Bottom; this.toolStrip2.Items.AddRange(new System.Windows.Forms.ToolStripItem this.toolStripProgressBar1); this.toolStrip2.Location = new System.Drawing.Point(0, 433); this.toolStrip2.Name = toolStrip2; this.toolStrip2.Size = new System.Drawing.Size(631, 25); this.toolStrip2.TabIndex = 2; this.toolStrip2.Text = toolStrip2; / / toolStripProgressBar1 / this.toolStripProgressBar1.Name = toolStripProgressBar1; this.toolStripProgressBar1.Size = new System.Drawing.Si