WebBrowser.CanGoForward : WebBrowser « System.Windows.Forms « C# / C Sharp by API

1. C# / C Sharp by API
2. System.Windows.Forms
3. WebBrowser

WebBrowser.CanGoForward

 



using System;
using System.Windows.Forms;

public class SimpleWebBrowser : Form
{
    public SimpleWebBrowser()
    {
        InitializeComponent();
        webBrowser1.Navigate("http://www.java2s.com");
    }

    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.java2s.com";
        // 
        // 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;
}

   
  

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