C# WebBrowser使用 网络(二)

WebBrowser 简单操作

Form 代码

    public partial class Form1 : Form
     {
         public Form1()
         {
             InitializeComponent();
         }

         private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
         {
             if (e.KeyChar == (char))
             {
                 webBrowser1.Navigate(textBox1.Text);
             }
         }

         private void Form1_Load(object sender, EventArgs e)
         {
             buttonBack.Enabled = false;
             buttonForward.Enabled = false;
             buttonStop.Enabled = false;

             this.webBrowser1.CanGoBackChanged += (s, k) => { if (webBrowser1.CanGoBack)  buttonBack.Enabled = true; else buttonBack.Enabled = false; };
             this.webBrowser1.CanGoForwardChanged += (s, k) => { if (webBrowser1.CanGoForward) buttonForward.Enabled = true; else buttonForward.Enabled = false; };
             this.webBrowser1.DocumentTitleChanged += (s, k) => { this.Text = webBrowser1.DocumentTitle.ToString(); };
         }

         private void buttonBack_Click(object sender, EventArgs e)
         {
             webBrowser1.GoBack();
             textBox1.Text = webBrowser1.Url.ToString();
         }

         private void buttonForward_Click(object sender, EventArgs e)
         {
             webBrowser1.GoForward();
             textBox1.Text = webBrowser1.Url.ToString();
         }

         private void webBrowser1_Navigated(object sender, WebBrowserNavigatedEventArgs e)
         {
             this.Text = webBrowser1.DocumentTitle.ToString();
             textBox1.Text = webBrowser1.Url.ToString();
         }

         private void buttonStop_Click(object sender, EventArgs e)
         {
             webBrowser1.Stop();
         }

         private void buttonHome_Click(object sender, EventArgs e)
         {
             webBrowser1.GoHome();
             textBox1.Text = webBrowser1.Url == null ? "" : webBrowser1.Url.ToString();
         }

         private void buttonRefresh_Click(object sender, EventArgs e)
         {
             webBrowser1.Refresh();
         }

         private void buttonSubmit_Click(object sender, EventArgs e)
         {
             webBrowser1.Navigate(textBox1.Text);
         }

         private void webBrowser1_Navigating(object sender, WebBrowserNavigatingEventArgs e)
         {
             buttonStop.Enabled = true;
         }

         private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
         {
             textBox2.Text = webBrowser1.DocumentText;
             buttonStop.Enabled = false;
             if (webBrowser1.CanGoBack)
                 buttonBack.Enabled = true;
             else
                 buttonBack.Enabled = false;

             if (webBrowser1.CanGoForward)
                 buttonForward.Enabled = true;
             else
                 buttonForward.Enabled = false;
         }

         private void button1_Click(object sender, EventArgs e)
         {
             webBrowser1.Print();
         }
     }

Designer 代码

  partial class Form1
     {
         /// <summary>
         /// Required designer variable.
         /// </summary>
         private System.ComponentModel.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.textBox1 = new System.Windows.Forms.TextBox();
             this.buttonSubmit = new System.Windows.Forms.Button();
             this.buttonRefresh = new System.Windows.Forms.Button();
             this.buttonHome = new System.Windows.Forms.Button();
             this.buttonStop = new System.Windows.Forms.Button();
             this.buttonForward = new System.Windows.Forms.Button();
             this.buttonBack = new System.Windows.Forms.Button();
             this.webBrowser1 = new System.Windows.Forms.WebBrowser();
             this.textBox2 = new System.Windows.Forms.TextBox();
             this.button1 = new System.Windows.Forms.Button();
             this.SuspendLayout();
             //
             // textBox1
             //
             this.textBox1.Location = new System.Drawing.Point(, );
             this.textBox1.Name = "textBox1";
             this.textBox1.Size = new System.Drawing.Size(, );
             this.textBox1.TabIndex = ;
             this.textBox1.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox1_KeyPress);
             //
             // buttonSubmit
             //
             this.buttonSubmit.Location = new System.Drawing.Point(, );
             this.buttonSubmit.Name = "buttonSubmit";
             this.buttonSubmit.Size = new System.Drawing.Size(, );
             this.buttonSubmit.TabIndex = ;
             this.buttonSubmit.Text = "Submit";
             this.buttonSubmit.UseVisualStyleBackColor = true;
             this.buttonSubmit.Click += new System.EventHandler(this.buttonSubmit_Click);
             //
             // buttonRefresh
             //
             this.buttonRefresh.Location = new System.Drawing.Point(, );
             this.buttonRefresh.Name = "buttonRefresh";
             this.buttonRefresh.Size = new System.Drawing.Size(, );
             this.buttonRefresh.TabIndex = ;
             this.buttonRefresh.Text = "Refresh";
             this.buttonRefresh.UseVisualStyleBackColor = true;
             this.buttonRefresh.Click += new System.EventHandler(this.buttonRefresh_Click);
             //
             // buttonHome
             //
             this.buttonHome.Location = new System.Drawing.Point(, );
             this.buttonHome.Name = "buttonHome";
             this.buttonHome.Size = new System.Drawing.Size(, );
             this.buttonHome.TabIndex = ;
             this.buttonHome.Text = "Home";
             this.buttonHome.UseVisualStyleBackColor = true;
             this.buttonHome.Click += new System.EventHandler(this.buttonHome_Click);
             //
             // buttonStop
             //
             this.buttonStop.Location = new System.Drawing.Point(, );
             this.buttonStop.Name = "buttonStop";
             this.buttonStop.Size = new System.Drawing.Size(, );
             this.buttonStop.TabIndex = ;
             this.buttonStop.Text = "Stop";
             this.buttonStop.UseVisualStyleBackColor = true;
             this.buttonStop.Click += new System.EventHandler(this.buttonStop_Click);
             //
             // buttonForward
             //
             this.buttonForward.Location = new System.Drawing.Point(, );
             this.buttonForward.Name = "buttonForward";
             this.buttonForward.Size = new System.Drawing.Size(, );
             this.buttonForward.TabIndex = ;
             this.buttonForward.Text = "Forward";
             this.buttonForward.UseVisualStyleBackColor = true;
             this.buttonForward.Click += new System.EventHandler(this.buttonForward_Click);
             //
             // buttonBack
             //
             this.buttonBack.Location = new System.Drawing.Point(, );
             this.buttonBack.Name = "buttonBack";
             this.buttonBack.Size = new System.Drawing.Size(, );
             this.buttonBack.TabIndex = ;
             this.buttonBack.Text = "Back";
             this.buttonBack.UseVisualStyleBackColor = true;
             this.buttonBack.Click += new System.EventHandler(this.buttonBack_Click);
             //
             // webBrowser1
             //
             this.webBrowser1.Location = new System.Drawing.Point(, );
             this.webBrowser1.MinimumSize = new System.Drawing.Size(, );
             this.webBrowser1.Name = "webBrowser1";
             this.webBrowser1.Size = new System.Drawing.Size(, );
             this.webBrowser1.TabIndex = ;
             this.webBrowser1.DocumentCompleted += new System.Windows.Forms.WebBrowserDocumentCompletedEventHandler(this.webBrowser1_DocumentCompleted);
             this.webBrowser1.Navigated += new System.Windows.Forms.WebBrowserNavigatedEventHandler(this.webBrowser1_Navigated);
             this.webBrowser1.Navigating += new System.Windows.Forms.WebBrowserNavigatingEventHandler(this.webBrowser1_Navigating);
             //
             // textBox2
             //
             this.textBox2.Location = new System.Drawing.Point(, );
             this.textBox2.Multiline = true;
             this.textBox2.Name = "textBox2";
             this.textBox2.Size = new System.Drawing.Size(, );
             this.textBox2.TabIndex = ;
             //
             // button1
             //
             this.button1.Location = new System.Drawing.Point(, );
             this.button1.Name = "button1";
             this.button1.Size = new System.Drawing.Size(, );
             this.button1.TabIndex = ;
             this.button1.Text = "Print";
             this.button1.UseVisualStyleBackColor = true;
             this.button1.Click += new System.EventHandler(this.button1_Click);
             //
             // Form1
             //
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(, );
             this.Controls.Add(this.textBox2);
             this.Controls.Add(this.webBrowser1);
             this.Controls.Add(this.textBox1);
             this.Controls.Add(this.buttonSubmit);
             this.Controls.Add(this.button1);
             this.Controls.Add(this.buttonRefresh);
             this.Controls.Add(this.buttonHome);
             this.Controls.Add(this.buttonStop);
             this.Controls.Add(this.buttonForward);
             this.Controls.Add(this.buttonBack);
             this.Name = "Form1";
             this.Text = "Form1";
             this.Load += new System.EventHandler(this.Form1_Load);
             this.ResumeLayout(false);
             this.PerformLayout();

         }

         #endregion

         private System.Windows.Forms.TextBox textBox1;
         private System.Windows.Forms.Button buttonSubmit;
         private System.Windows.Forms.Button buttonRefresh;
         private System.Windows.Forms.Button buttonHome;
         private System.Windows.Forms.Button buttonStop;
         private System.Windows.Forms.Button buttonForward;
         private System.Windows.Forms.Button buttonBack;
         private System.Windows.Forms.WebBrowser webBrowser1;
         private System.Windows.Forms.TextBox textBox2;
         private System.Windows.Forms.Button button1;
     }
 }

通过流 读取页面源代码

            WebClient client = new WebClient();
            Stream str= client.OpenRead("http://www.baidu.com");
            StreamReader sr = new StreamReader(str);

            string line;
            while ((line=sr.ReadLine())!=null)
            {
                listBox1.Items.Add(line);
            }
            str.Close(); 

打印方法

       webBrowser1.Print();