Csharp/CSharp Tutorial/GUI Windows Forms/WebBrowser

A simple Browser

<source lang="csharp">using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class WebBrowserDemo {

   [STAThread]
   static void Main()
   {
       Application.EnableVisualStyles();
       Application.Run(new Form1());
   }

} public partial class Form1 : Form {

   public Form1()
   {
       InitializeComponent();
   }
   private void webBrowser1_ProgressChanged(object sender, WebBrowserProgressChangedEventArgs e)
   {
       toolStripProgressBar1.Maximum = (int)e.MaximumProgress;
       toolStripProgressBar1.Value = (int) e.CurrentProgress;
   }
   private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
   {
       toolStripProgressBar1.Value = toolStripProgressBar1.Maximum;
    
   }

} partial class Form1 {

   private void InitializeComponent()
   {
       this.statusStrip1 = new System.Windows.Forms.StatusStrip();
       this.toolStripProgressBar1 = new System.Windows.Forms.ToolStripProgressBar();
       this.webBrowser1 = new System.Windows.Forms.WebBrowser();
       this.statusStrip1.SuspendLayout();
       this.SuspendLayout();
       // 
       // statusStrip1
       // 
       this.statusStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
       this.toolStripProgressBar1});
       this.statusStrip1.LayoutStyle = System.Windows.Forms.ToolStripLayoutStyle.Table;
       this.statusStrip1.Location = new System.Drawing.Point(0, 488);
       this.statusStrip1.Name = "statusStrip1";
       this.statusStrip1.Size = new System.Drawing.Size(695, 22);
       this.statusStrip1.TabIndex = 0;
       this.statusStrip1.Text = "statusStrip1";
       // 
       // toolStripProgressBar1
       // 
       this.toolStripProgressBar1.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.ImageAndText;
       this.toolStripProgressBar1.Name = "toolStripProgressBar1";
       this.toolStripProgressBar1.Size = new System.Drawing.Size(100, 15);
       this.toolStripProgressBar1.Text = "toolStripProgressBar1";
       // 
       // webBrowser1
       // 
       this.webBrowser1.Dock = System.Windows.Forms.DockStyle.Fill;
       this.webBrowser1.Location = new System.Drawing.Point(0, 0);
       this.webBrowser1.Name = "webBrowser1";
       this.webBrowser1.Size = new System.Drawing.Size(695, 488);
       this.webBrowser1.Url = new System.Uri("http://www.nfex.ru", System.UriKind.Absolute);
       this.webBrowser1.ProgressChanged += new System.Windows.Forms.WebBrowserProgressChangedEventHandler(this.webBrowser1_ProgressChanged);
       this.webBrowser1.DocumentCompleted += new System.Windows.Forms.WebBrowserDocumentCompletedEventHandler(this.webBrowser1_DocumentCompleted);
       // 
       // Form1
       // 
       this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
       this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
       this.ClientSize = new System.Drawing.Size(695, 510);
       this.Controls.Add(this.webBrowser1);
       this.Controls.Add(this.statusStrip1);
       this.Name = "Form1";
       this.Text = "Form1";
       this.statusStrip1.ResumeLayout(false);
       this.ResumeLayout(false);
       this.PerformLayout();
   }
   private System.Windows.Forms.StatusStrip statusStrip1;
   private System.Windows.Forms.ToolStripProgressBar toolStripProgressBar1;
   private System.Windows.Forms.WebBrowser webBrowser1;

}</source>

Browser with Url entry box

<source lang="csharp">using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Net; public class BrowserWithUrlEntryBox {

   [STAThread]
   static void Main()
   {
       Application.EnableVisualStyles();
       Application.Run(new Form1());
   }

} public partial class Form1 : Form {

   public Form1()
   {
       InitializeComponent();
   }
   private void goButton_Click(object sender, EventArgs e)
   {
       ftpBrowser.Navigate(addressBox.Text);
   }

} partial class Form1 {

   /// <summary>
   /// Required designer variable.
   /// </summary>
   private System.ruponentModel.IContainer components = null;
   /// <summary>
   /// Clean up any resources being used.
   /// </summary>
   /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
   protected override void Dispose(bool disposing)
   {
       if (disposing && (components != null))
       {
           components.Dispose();
       }
       base.Dispose(disposing);
   }
   #region Windows Form Designer generated code
   /// <summary>
   /// Required method for Designer support - do not modify
   /// the contents of this method with the code editor.
   /// </summary>
   private void InitializeComponent()
   {
       this.ftpBrowser = new System.Windows.Forms.WebBrowser();
       this.label1 = new System.Windows.Forms.Label();
       this.addressBox = new System.Windows.Forms.TextBox();
       this.goButton = new System.Windows.Forms.Button();
       this.SuspendLayout();
       // 
       // ftpBrowser
       // 
       this.ftpBrowser.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                   | System.Windows.Forms.AnchorStyles.Left)
                   | System.Windows.Forms.AnchorStyles.Right)));
       this.ftpBrowser.Location = new System.Drawing.Point(16, 42);
       this.ftpBrowser.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);
       this.ftpBrowser.Name = "ftpBrowser";
       this.ftpBrowser.Size = new System.Drawing.Size(917, 524);
       this.ftpBrowser.TabIndex = 4;
       // 
       // label1
       // 
       this.label1.AutoSize = true;
       this.label1.Location = new System.Drawing.Point(15, 11);
       this.label1.Margin = new System.Windows.Forms.Padding(4, 0, 4, 0);
       this.label1.Name = "label1";
       this.label1.Size = new System.Drawing.Size(60, 17);
       this.label1.TabIndex = 1;
       this.label1.Text = "Address";
       // 
       // addressBox
       // 
       this.addressBox.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
                   | System.Windows.Forms.AnchorStyles.Right)));
       this.addressBox.Location = new System.Drawing.Point(77, 7);
       this.addressBox.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);
       this.addressBox.Name = "addressBox";
       this.addressBox.Size = new System.Drawing.Size(572, 22);
       this.addressBox.TabIndex = 2;
       // 
       // goButton
       // 
       this.goButton.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
       this.goButton.Location = new System.Drawing.Point(659, 5);
       this.goButton.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);
       this.goButton.Name = "goButton";
       this.goButton.Size = new System.Drawing.Size(100, 28);
       this.goButton.TabIndex = 3;
       this.goButton.Text = "Go";
       this.goButton.Click += new System.EventHandler(this.goButton_Click);
       // 
       // Form1
       // 
       this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
       this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
       this.ClientSize = new System.Drawing.Size(949, 581);
       this.Controls.Add(this.goButton);
       this.Controls.Add(this.addressBox);
       this.Controls.Add(this.label1);
       this.Controls.Add(this.ftpBrowser);
       this.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);
       this.Name = "Form1";
       this.Text = "Form1";
       this.ResumeLayout(false);
       this.PerformLayout();
   }
   #endregion
   private System.Windows.Forms.WebBrowser ftpBrowser;
   private System.Windows.Forms.Label label1;
   private System.Windows.Forms.TextBox addressBox;
   private System.Windows.Forms.Button goButton;

}</source>

Online Book Browser

<source lang="csharp">/* Mastering Visual C#.Net

1. Paperback: 800 pages
2. Publisher: Sybex; 1st edition (August 20, 2002)
3. Language: English
4. ISBN-10: 0782129110
5. ISBN-13: 978-0782129113

• /

using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Net; using System.IO; using System.Text.RegularExpressions; class Book {

   public string BookTitle;
   public string BookURL;
   public Book( string title, string url)
   {
       BookTitle = title;
       BookURL = url;
   }
   public override string ToString()
   {
       return BookTitle;
   }

} public partial class Form1 : Form {

   public Form1()
   {
       InitializeComponent();
   }
   private void bookCheckButton_Click(object sender, EventArgs e)
   {
       GetWebPage("http://www.apress.ru/book/forthcoming.html");
   }
   private MatchCollection GetBookDetailsFromWebPage(string webPage)
   {
       // Use a regex here to find all the book info
       Regex newBooksRegEx =
           new Regex(
           "<a href=\"(/book/bookDisplay\\.html\\?bID=[0-9]+)\">([^<]+)</a>",
           RegexOptions.Singleline);
       return newBooksRegEx.Matches(webPage);
   }
   private void AddBooksToListBox(MatchCollection books)
   {
       foreach (Match bookMatch in books)
       {
           bookList.Items.Add(
               new Book(bookMatch.Groups[2].Value, bookMatch.Groups[1].Value)
           );
       }
   }
   
   private void GetWebPage(string url)
   {
       WebClient web = new WebClient();
       web.DownloadStringCompleted += 
           new DownloadStringCompletedEventHandler(DownloadComplete);
       web.DownloadProgressChanged += 
           new DownloadProgressChangedEventHandler(ProgressChanged);
       bookList.Items.Clear();
       web.DownloadStringAsync(new System.Uri(url));
   }

   private void ProgressChanged(object sender, ProgressChangedEventArgs e)
   {
       downloadProgress.Value = e.ProgressPercentage;
   }
   private void DownloadComplete(object sender, DownloadStringCompletedEventArgs e)
   {
           downloadProgress.Value = 100;
           if (!e.Cancelled)
           {
               string newBooksPage = e.Result;
               AddBooksToListBox(
                   GetBookDetailsFromWebPage(newBooksPage)
               );
           }
   }
   private void bookList_DoubleClick(object sender, EventArgs e)
   {
       if (bookList.SelectedIndex != -1)
       {
           Book selectedBook = (Book)bookList.SelectedItem;
           browser.Navigate("http://www.apress.ru/" + selectedBook.BookURL, true);
       }
   }

} partial class Form1 {

   /// <summary>
   /// Required designer variable.
   /// </summary>
   private System.ruponentModel.IContainer components = null;
   /// <summary>
   /// Clean up any resources being used.
   /// </summary>
   /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
   protected override void Dispose(bool disposing)
   {
       if (disposing && (components != null))
       {
           components.Dispose();
       }
       base.Dispose(disposing);
   }
   #region Windows Form Designer generated code
   /// <summary>
   /// Required method for Designer support - do not modify
   /// the contents of this method with the code editor.
   /// </summary>
   private void InitializeComponent()
   {
       this.bookList = new System.Windows.Forms.ListBox();
       this.bookCheckButton = new System.Windows.Forms.Button();
       this.browser = new System.Windows.Forms.WebBrowser();
       this.downloadProgress = new System.Windows.Forms.ProgressBar();
       this.SuspendLayout();
       // 
       // bookList
       // 
       this.bookList.FormattingEnabled = true;
       this.bookList.Location = new System.Drawing.Point(12, 40);
       this.bookList.Name = "bookList";
       this.bookList.Size = new System.Drawing.Size(410, 355);
       this.bookList.Sorted = true;
       this.bookList.TabIndex = 0;
       this.bookList.DoubleClick += new System.EventHandler(this.bookList_DoubleClick);
       // 
       // bookCheckButton
       // 
       this.bookCheckButton.Location = new System.Drawing.Point(304, 11);
       this.bookCheckButton.Name = "bookCheckButton";
       this.bookCheckButton.Size = new System.Drawing.Size(118, 23);
       this.bookCheckButton.TabIndex = 1;
       this.bookCheckButton.Text = "Check for books";
       this.bookCheckButton.Click += new System.EventHandler(this.bookCheckButton_Click);
       // 
       // browser
       // 
       this.browser.Location = new System.Drawing.Point(0, 0);
       this.browser.Name = "browser";
       this.browser.Size = new System.Drawing.Size(282, 34);
       this.browser.TabIndex = 0;
       this.browser.Visible = false;
       // 
       // downloadProgress
       // 
       this.downloadProgress.Location = new System.Drawing.Point(12, 401);
       this.downloadProgress.Name = "downloadProgress";
       this.downloadProgress.Size = new System.Drawing.Size(410, 23);
       this.downloadProgress.TabIndex = 2;
       // 
       // Form1
       // 
       this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
       this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
       this.ClientSize = new System.Drawing.Size(436, 447);
       this.Controls.Add(this.downloadProgress);
       this.Controls.Add(this.browser);
       this.Controls.Add(this.bookCheckButton);
       this.Controls.Add(this.bookList);
       this.Name = "Form1";
       this.Text = "Find forthcoming Apress Books";
       this.ResumeLayout(false);
   }
   #endregion
   private System.Windows.Forms.ListBox bookList;
   private System.Windows.Forms.Button bookCheckButton;
   private System.Windows.Forms.WebBrowser browser;
   private System.Windows.Forms.ProgressBar downloadProgress;

} public class OnlineBookBrowser {

   /// <summary>
   /// The main entry point for the application.
   /// </summary>
   [STAThread]
   static void Main()
   {
       Application.EnableVisualStyles();
       Application.Run(new Form1());
   }

}</source>

Simpel Web Browser with forward, backward button

<source lang="csharp">using System; using System.Windows.Forms; public class SimpleWebBrowser : Form {

   public SimpleWebBrowser()
   {
       InitializeComponent();
       webBrowser1.Navigate("http://www.nfex.ru");
   }
   private void goButton_Click(object sender, EventArgs e)
   {
       webBrowser1.Navigate(textURL.Text);
   }
   private void homeButton_Click(object sender, EventArgs e)
   {
       webBrowser1.GoHome();
   }
   private void backButton_Click(object sender, EventArgs e)
   {
       webBrowser1.GoBack();
   }
   private void forwarButton_Click(object sender, EventArgs e)
   {
       webBrowser1.GoForward();
   }
   private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
   {
       textURL.Text = webBrowser1.Url.ToString();
       if (webBrowser1.CanGoBack)
       {
           backButton.Enabled = true;
       }
       else
       {
           backButton.Enabled = false;
       }
       if (webBrowser1.CanGoForward)
       {
           forwarButton.Enabled = true;
       }
       else
       {
           forwarButton.Enabled = false;
       }
   }
   [STAThread]
   public static void Main(string[] args)
   {
       Application.Run(new SimpleWebBrowser());
   }
   private void InitializeComponent()
   {
       this.webBrowser1 = new System.Windows.Forms.WebBrowser();
       this.goButton = new System.Windows.Forms.Button();
       this.textURL = new System.Windows.Forms.TextBox();
       this.label1 = new System.Windows.Forms.Label();
       this.backButton = new System.Windows.Forms.Button();
       this.homeButton = new System.Windows.Forms.Button();
       this.forwarButton = new System.Windows.Forms.Button();
       this.SuspendLayout();
       // 
       // webBrowser1
       // 
       this.webBrowser1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
                   | System.Windows.Forms.AnchorStyles.Right)));
       this.webBrowser1.Location = new System.Drawing.Point(-2, 2);
       this.webBrowser1.Name = "webBrowser1";
       this.webBrowser1.Size = new System.Drawing.Size(685, 190);
       this.webBrowser1.TabIndex = 3;
       this.webBrowser1.DocumentCompleted += new System.Windows.Forms.WebBrowserDocumentCompletedEventHandler(this.webBrowser1_DocumentCompleted);
       // 
       // goButton
       // 
       this.goButton.Location = new System.Drawing.Point(435, 216);
       this.goButton.Name = "goButton";
       this.goButton.Size = new System.Drawing.Size(48, 23);
       this.goButton.TabIndex = 1;
       this.goButton.Text = "Go";
       this.goButton.Click += new System.EventHandler(this.goButton_Click);
       // 
       // textURL
       // 
       this.textURL.Location = new System.Drawing.Point(240, 217);
       this.textURL.Name = "textURL";
       this.textURL.Size = new System.Drawing.Size(189, 20);
       this.textURL.TabIndex = 2;
       this.textURL.Text = "http://www.nfex.ru";
       // 
       // label1
       // 
       this.label1.Location = new System.Drawing.Point(206, 221);
       this.label1.Name = "label1";
       this.label1.Size = new System.Drawing.Size(31, 13);
       this.label1.TabIndex = 0;
       this.label1.Text = "Go to:";
       // 
       // backButton
       // 
       this.backButton.Enabled = false;
       this.backButton.Location = new System.Drawing.Point(227, 249);
       this.backButton.Name = "backButton";
       this.backButton.Size = new System.Drawing.Size(75, 23);
       this.backButton.TabIndex = 0;
       this.backButton.Text = "<< Back";
       this.backButton.Click += new System.EventHandler(this.backButton_Click);
       // 
       // homeButton
       // 
       this.homeButton.Location = new System.Drawing.Point(308, 249);
       this.homeButton.Name = "homeButton";
       this.homeButton.Size = new System.Drawing.Size(75, 23);
       this.homeButton.TabIndex = 0;
       this.homeButton.Text = "Home";
       this.homeButton.Click += new System.EventHandler(this.homeButton_Click);
       // 
       // forwarButton
       // 
       this.forwarButton.Enabled = false;
       this.forwarButton.Location = new System.Drawing.Point(389, 249);
       this.forwarButton.Name = "forwarButton";
       this.forwarButton.Size = new System.Drawing.Size(75, 23);
       this.forwarButton.TabIndex = 0;
       this.forwarButton.Text = "Forward >>";
       this.forwarButton.Click += new System.EventHandler(this.forwarButton_Click);
       // 
       // SimpleWebBrowser
       // 
       this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
       this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
       this.ClientSize = new System.Drawing.Size(684, 303);
       this.Controls.Add(this.forwarButton);
       this.Controls.Add(this.homeButton);
       this.Controls.Add(this.backButton);
       this.Controls.Add(this.label1);
       this.Controls.Add(this.textURL);
       this.Controls.Add(this.goButton);
       this.Controls.Add(this.webBrowser1);
       this.ResumeLayout(false);
       this.PerformLayout();
   }
   private System.Windows.Forms.WebBrowser webBrowser1;
   private System.Windows.Forms.Button goButton;
   private System.Windows.Forms.TextBox textURL;
   private System.Windows.Forms.Label label1;
   private System.Windows.Forms.Button backButton;
   private System.Windows.Forms.Button homeButton;
   private System.Windows.Forms.Button forwarButton;

}</source>