实例介绍
【实例简介】能前进、后退、支持多标签、打印、添加收藏等功能
【实例截图】
【核心代码】
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;
namespace MyWebIE
{
public partial class frmIE : Form
{
//每页标题显示字符数
private int TITLE_COUNT = 8;
public frmIE()
{
InitializeComponent();
}
#region 工具栏
/// <summary>
/// 后退按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btngoback_Click(object sender, EventArgs e)
{
getCurrentBrowser().GoBack();
setStatusButton();
}
/// <summary>
/// 前进按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnforword_Click(object sender, EventArgs e)
{
getCurrentBrowser().GoForward();
setStatusButton();
}
/// <summary>
/// 停止按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnStop_Click(object sender, EventArgs e)
{
getCurrentBrowser().Stop();
}
/// <summary>
/// 刷新按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnrefresh_Click(object sender, EventArgs e)
{
getCurrentBrowser().Refresh();
}
/// <summary>
/// 主页按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnhome_Click(object sender, EventArgs e)
{
getCurrentBrowser().GoHome();
}
/// <summary>
/// 搜索按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnsearch_Click(object sender, EventArgs e)
{
getCurrentBrowser().GoSearch();
}
/// <summary>
/// 打印按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnprint_Click(object sender, EventArgs e)
{
getCurrentBrowser().ShowPrintDialog();
}
/// <summary>
/// 新建按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnNew_Click(object sender, EventArgs e)
{
newPage();
}
/// <summary>
/// 转到按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton1_Click(object sender, EventArgs e)
{
newCurrentPageUrl(tscburl.Text);
}
/// <summary>
/// 使地址栏中的地址处于选择状态
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripLabel1_Click(object sender, EventArgs e)
{
tscburl.Select();
}
#endregion
#region 常用方法
/// <summary>
/// 设置前进、后退按钮状态
/// </summary>
private void setStatusButton()
{
btngoback.Enabled = getCurrentBrowser().CanGoBack;
btnforword.Enabled = getCurrentBrowser().CanGoForward;
}
/// <summary>
/// 当在地址栏中输入网址之后回车打开网址
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tscburl_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
newCurrentPageUrl(tscburl.Text);
}
}
/// <summary>
/// 新建一个空白页面
/// </summary>
private void newPage()
{
tscburl.Text= "about:blank";
TabPage mypage = new TabPage();
WebBrowser tempBrowser = new WebBrowser();
tempBrowser.Navigated = new WebBrowserNavigatedEventHandler(tempBrowser_Navigated);
tempBrowser.NewWindow = new CancelEventHandler(tempBrowser_NewWindow);
tempBrowser.ProgressChanged = new WebBrowserProgressChangedEventHandler(tempBrowser_ProgressChanged);
tempBrowser.StatusTextChanged = new EventHandler(tempBrowser_StatusTextChanged);
tempBrowser.Dock = DockStyle.Fill;
mypage.Controls.Add(tempBrowser);
tabControl1.TabPages.Add(mypage);
tabControl1.SelectedTab = mypage;
}
/// <summary>
/// 控制进度条变化
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void tempBrowser_ProgressChanged(object sender, WebBrowserProgressChangedEventArgs e)
{
toolStripProgressBar1.Visible = true;
toolStripProgressBar1.Maximum = (int)e.MaximumProgress;
toolStripProgressBar1.Value = (int)e.CurrentProgress;
toolStripProgressBar1.Visible = false;
setStatusButton();
}
/// <summary>
/// 新建一个页面并打开指定的网址
/// </summary>
/// <param name="address"></param>
private void newPage(string address)
{
TabPage mypage = new TabPage();
WebBrowser tempBrowser = new WebBrowser();
tempBrowser.Navigated = new WebBrowserNavigatedEventHandler(tempBrowser_Navigated);
tempBrowser.NewWindow = new CancelEventHandler(tempBrowser_NewWindow);
tempBrowser.StatusTextChanged = new EventHandler(tempBrowser_StatusTextChanged);
tempBrowser.ProgressChanged = new WebBrowserProgressChangedEventHandler(tempBrowser_ProgressChanged);
tempBrowser.Url = getUrl(address);
tempBrowser.Dock = DockStyle.Fill;
mypage.Controls.Add(tempBrowser);
tabControl1.TabPages.Add(mypage);
}
/// <summary>
/// 获取当前的浏览器
/// </summary>
/// <returns></returns>
private WebBrowser getCurrentBrowser()
{
WebBrowser currentBrowser = (WebBrowser)tabControl1.SelectedTab.Controls[0];
return currentBrowser;
}
/// <summary>
/// 处理地址栏中的字符串
/// </summary>
/// <param name="address"></param>
/// <returns></returns>
private Uri getUrl(string address)
{
string tempaddress = address;
if ((!address.StartsWith("http://")) && (!address.StartsWith("https://")) && (!address.StartsWith("ftp://")))
{
tempaddress = "http://" address;
}
Uri myurl;
try
{
myurl = new Uri(tempaddress);
}
catch
{
myurl = new Uri("about:blank");
}
return myurl;
}
/// <summary>
/// 截取字符串为指定长度
/// </summary>
/// <param name="oldstring"></param>
/// <returns></returns>
private string newstring(string oldstring)
{
string temp;
if (oldstring.Length < TITLE_COUNT)
{
temp = oldstring;
}
else
{
temp = oldstring.Substring(0, TITLE_COUNT);
}
return temp;
}
/// <summary>
/// 将浏览过的网址写入记事本中
/// </summary>
/// <param name="s"></param>
public void WriteText(string s)
{
string strg = Application.StartupPath.ToString();
strg = strg.Substring(0, strg.LastIndexOf("\\"));
strg = strg.Substring(0, strg.LastIndexOf("\\"));
strg = @"\UrlTxt.txt";
System.IO.StreamWriter sw = new StreamWriter(strg, true);
sw.WriteLine(s);
sw.Close();
}
/// <summary>
/// 读取记事本中的文件
/// </summary>
public void ReadText()
{
string strg = Application.StartupPath.ToString();
strg = strg.Substring(0, strg.LastIndexOf("\\"));
strg = strg.Substring(0, strg.LastIndexOf("\\"));
strg = @"\UrlTxt.txt";
try
{
StreamReader sr = new StreamReader(strg);
while (sr.ReadLine() != null)
{
tscburl.Items.Add(sr.ReadLine().ToString());
}
sr.Close();
}
catch
{ }
}
#endregion
#region 临时浏览器的事件
/// <summary>
/// 临时浏览器状态变化事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void tempBrowser_StatusTextChanged(object sender, EventArgs e)
{
WebBrowser myBrowser = (WebBrowser)sender;
if (myBrowser != getCurrentBrowser())
{
return;
}
else
{
toolStripStatusLabel1.Text = myBrowser.StatusText;
}
}
/// <summary>
/// 在当前页面上重新定向
/// </summary>
/// <param name="address">url</param>
private void newCurrentPageUrl(String address)
{
getCurrentBrowser().Navigate(getUrl(address));
}
/// <summary>
/// 临时浏览器产生新窗体事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void tempBrowser_NewWindow(object sender, CancelEventArgs e)
{
//获取触发tempBrowser_NewWindow事件的浏览器
WebBrowser myBrowser = (WebBrowser)sender;
//获取触发tempBrowser_NewWindow事件的浏览器所在TabPage
TabPage mypage = (TabPage)myBrowser.Parent;
//通过StatusText属性获得新的url
string NewURL = ((WebBrowser)sender).StatusText;
//生成新的一页
TabPage TabPageTemp = new TabPage();
//生成新的tempBrowser
WebBrowser tempBrowser = new WebBrowser();
//临时浏览器定向到新的url
tempBrowser.Navigate(NewURL);
tempBrowser.Dock = DockStyle.Fill;
//为临时浏览器关联NewWindow等事件
tempBrowser.NewWindow = new CancelEventHandler(tempBrowser_NewWindow);
tempBrowser.Navigated = new WebBrowserNavigatedEventHandler(tempBrowser_Navigated);
tempBrowser.ProgressChanged = new WebBrowserProgressChangedEventHandler(tempBrowser_ProgressChanged);
tempBrowser.StatusTextChanged = new EventHandler(tempBrowser_StatusTextChanged);
//将临时浏览器添加到临时TabPage中
TabPageTemp.Controls.Add(tempBrowser);
//将临时TabPage添加到主窗体中
this.tabControl1.TabPages.Add(TabPageTemp);
//使外部无法捕获此事件
e.Cancel = true;
}
/// <summary>
/// 临时浏览器定向完毕
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tempBrowser_Navigated(object sender, WebBrowserNavigatedEventArgs e)
{
tscburl.Text = getCurrentBrowser().Url.ToString();
WebBrowser mybrowser = (WebBrowser)sender;
TabPage mypage = (TabPage)mybrowser.Parent;
//设置临时浏览器所在tab标题
mypage.Text = newstring(mybrowser.DocumentTitle);
}
#endregion
#region tabControl1控件的常用事件
/// <summary>
/// 切换不同的tab事出发此事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tabControl1_SelectedIndexChanged(object sender, EventArgs e)
{
WebBrowser mybor = (WebBrowser)tabControl1.SelectedTab.Controls[0];
if (mybor.Url != null)
{
//地址输入框
tscburl.Text = mybor.Url.ToString();
tabControl1.SelectedTab.Text = newstring(mybor.DocumentTitle);
}
else
{
tscburl.Text = "about:blank";
tabControl1.SelectedTab.Text = "空白页";
}
setStatusButton();
}
/// <summary>
/// 关闭指定的tab
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tabControl1_DoubleClick(object sender, EventArgs e)
{
//仅仅剩下一个tab时返回
if (tabControl1.TabPages.Count <= 1)
{
tabControl1.SelectedTab.Text = "空白页";
getCurrentBrowser().Navigate("about:blank");
}
else
{
//先将tabControl1隐藏然后remove掉目标tab（如果不隐藏则出现闪烁，即系统自动调转到tabControl1的第一个tab然后跳会。）最后显示tabControl1。
tabControl1.Visible = false;
WebBrowser mybor = getCurrentBrowser();
//释放资源
mybor.Dispose();
mybor.Controls.Clear();
this.tabControl1.TabPages.Remove(this.tabControl1.SelectedTab);
//重新设置当前tab
tabControl1.SelectedTab = tabControl1.TabPages[tabControl1.TabPages.Count - 1];
tabControl1.Visible = true;
}
}
#endregion
#region 初始化当前的浏览器窗体
/// <summary>
/// 加载窗体
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void frmIE_Load(object sender, EventArgs e)
{
initMainForm();
ReadText();
}
/// <summary>
/// 初始化浏览器
/// </summary>
private void initMainForm()
{
TabPage mypage = new TabPage();
WebBrowser tempBrowser = new WebBrowser();
tempBrowser.Navigated = new WebBrowserNavigatedEventHandler(tempBrowser_Navigated);
tempBrowser.NewWindow = new CancelEventHandler(tempBrowser_NewWindow);
tempBrowser.StatusTextChanged = new EventHandler(tempBrowser_StatusTextChanged);
tempBrowser.ProgressChanged = new WebBrowserProgressChangedEventHandler(tempBrowser_ProgressChanged);
tempBrowser.Dock = DockStyle.Fill;
tempBrowser.GoHome();//和新建空白页不同
mypage.Controls.Add(tempBrowser);
tabControl1.TabPages.Add(mypage);
}
#endregion
#region 菜单栏
/// <summary>
/// 新建网页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 新建ToolStripMenuItem_Click(object sender, EventArgs e)
{
newPage();
}
/// <summary>
/// 另存为
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 另存为ToolStripMenuItem_Click(object sender, EventArgs e)
{
getCurrentBrowser().ShowSaveAsDialog();
}
/// <summary>
/// 打印
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 打印ToolStripMenuItem_Click(object sender, EventArgs e)
{
getCurrentBrowser().ShowPrintDialog();
}
/// <summary>
/// 打印预览
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 打印预览ToolStripMenuItem_Click(object sender, EventArgs e)
{
getCurrentBrowser().ShowPrintPreviewDialog();
}
/// <summary>
/// 页面设置
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 页面设置ToolStripMenuItem_Click(object sender, EventArgs e)
{
getCurrentBrowser().ShowPageSetupDialog();
}
/// <summary>
/// 属性
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 属性ToolStripMenuItem_Click(object sender, EventArgs e)
{
getCurrentBrowser().ShowPropertiesDialog();
}
/// <summary>
/// 关闭浏览器
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 关闭ToolStripMenuItem_Click(object sender, EventArgs e)
{
Application.Exit();
}
/// <summary>
/// 停止
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 停止PToolStripMenuItem_Click(object sender, EventArgs e)
{
getCurrentBrowser().Stop();
}
/// <summary>
/// 刷新
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 刷新ToolStripMenuItem_Click(object sender, EventArgs e)
{
getCurrentBrowser().Refresh();
}
/// <summary>
/// 源文件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 源文件CToolStripMenuItem_Click(object sender, EventArgs e)
{
if (tscburl.Text.Trim() != "about:blank")
{
frmSource source = new frmSource();
source.address = tscburl.Text.Trim();
source.ShowDialog();
}
}
/// <summary>
/// 添加到收藏夹
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 添加到收藏夹AToolStripMenuItem_Click(object sender, EventArgs e)
{
if (tscburl.Text.Trim() == "about:blank" || tscburl.Text.Trim() == "" || !tscburl.Text.Trim().StartsWith("http://"))
{ }
else
{
frmOpenFavorites open = new frmOpenFavorites();
open.IUrl = tscburl.Text.Trim();
open.ITitle = getCurrentBrowser().DocumentTitle;
open.ShowDialog();
}
}
/// <summary>
/// 整理收藏夹
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 整理收藏夹OToolStripMenuItem_Click(object sender, EventArgs e)
{
frmNeatenFavorites neaten = new frmNeatenFavorites();
neaten.ShowDialog();
}
#endregion
}
}
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