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)13)
            {
                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(14, 43);
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(480, 21);
            this.textBox1.TabIndex = 14;
            this.textBox1.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox1_KeyPress);
            // 
            // buttonSubmit
            // 
            this.buttonSubmit.Location = new System.Drawing.Point(513, 17);
            this.buttonSubmit.Name = "buttonSubmit";
            this.buttonSubmit.Size = new System.Drawing.Size(75, 45);
            this.buttonSubmit.TabIndex = 13;
            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(338, 17);
            this.buttonRefresh.Name = "buttonRefresh";
            this.buttonRefresh.Size = new System.Drawing.Size(75, 21);
            this.buttonRefresh.TabIndex = 12;
            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(257, 17);
            this.buttonHome.Name = "buttonHome";
            this.buttonHome.Size = new System.Drawing.Size(75, 21);
            this.buttonHome.TabIndex = 11;
            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(176, 17);
            this.buttonStop.Name = "buttonStop";
            this.buttonStop.Size = new System.Drawing.Size(75, 21);
            this.buttonStop.TabIndex = 10;
            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(95, 17);
            this.buttonForward.Name = "buttonForward";
            this.buttonForward.Size = new System.Drawing.Size(75, 21);
            this.buttonForward.TabIndex = 9;
            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(14, 17);
            this.buttonBack.Name = "buttonBack";
            this.buttonBack.Size = new System.Drawing.Size(75, 21);
            this.buttonBack.TabIndex = 8;
            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(0, 67);
            this.webBrowser1.MinimumSize = new System.Drawing.Size(20, 18);
            this.webBrowser1.Name = "webBrowser1";
            this.webBrowser1.Size = new System.Drawing.Size(815, 312);
            this.webBrowser1.TabIndex = 15;
            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(0, 386);
            this.textBox2.Multiline = true;
            this.textBox2.Name = "textBox2";
            this.textBox2.Size = new System.Drawing.Size(807, 223);
            this.textBox2.TabIndex = 16;
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(419, 17);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 21);
            this.button1.TabIndex = 12;
            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(819, 619);
            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();