C# – How to open a link in webBrowser control in external browser

cnetwebbrowser-controlwinforms

I have a textBox and a webBrowser control in my Windows Forms application. Whenever a user enters a HTML code in textBox, the webBrowser control shows its compiled form. The code for this:

private void textBox2_TextChanged(object sender, EventArgs e)
{
    webBrowser1.DocumentText = textBox2.Text;
}

But whenever I click a link in the webBrowser control, it opens it in the same webBrowser control. What I want is that it should open in default web browser of the system. So is there any event for this webBrowser control that handles link clicking?

Best Answer

The easiest way to do this would be to intercept the Navigating event.

public void webBrowser1_Navigating(object sender, WebBrowserNavigatingEventArgs e)
{
    //cancel the current event
    e.Cancel = true;

    //this opens the URL in the user's default browser
    Process.Start(e.Url.ToString());
}

Related Solutions

.net – Open file from within a WebBrowser control

I also tested Ross's solution and it worked for me too.

But here's another approach, instead of using the built-in functionality that popups a dialog box asking you to download, open or cancel the download, you can use your own C# code in your application (not the HTML page) to directly open the file (or maybe do something else).

As per Microsoft MSDN example:

using System;
using System.Windows.Forms;
using System.Security.Permissions;

[PermissionSet(SecurityAction.Demand, Name="FullTrust")]
[System.Runtime.InteropServices.ComVisibleAttribute(true)]
public class Form1 : Form
{
    private WebBrowser webBrowser1 = new WebBrowser();
    private Button button1 = new Button();

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

    public Form1()
    {
        button1.Text = "call script code from client code";
        button1.Dock = DockStyle.Top;
        button1.Click += new EventHandler(button1_Click);
        webBrowser1.Dock = DockStyle.Fill;
        Controls.Add(webBrowser1);
        Controls.Add(button1);
        Load += new EventHandler(Form1_Load);
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        webBrowser1.AllowWebBrowserDrop = false;
        webBrowser1.IsWebBrowserContextMenuEnabled = false;
        webBrowser1.WebBrowserShortcutsEnabled = false;
        webBrowser1.ObjectForScripting = this;
        // Uncomment the following line when you are finished debugging.
        //webBrowser1.ScriptErrorsSuppressed = true;

        webBrowser1.DocumentText =
            "<html><head><script>" +
            "function test(message) { alert(message); }" +
            "</script></head><body><button " +
            "onclick=\"window.external.Test('called from script code')\">" +
            "call client code from script code</button>" +
            "</body></html>";
    }

    public void Test(String message)
    {
        MessageBox.Show(message, "client code");
    }

    private void button1_Click(object sender, EventArgs e)
    {
        webBrowser1.Document.InvokeScript("test",
            new String[] { "called from client code" });
    }

}

Best Answer

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.net – Open file from within a WebBrowser control

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