I want to be able to set up a home page in Webbrowser.

public partial class Form 1:Form
{
    public Form 1()
    {
        // Place control.Typically InitializeComponent(); is acceptable
        var button1 = new Button();
        button1.Dock=DockStyle.Top;
        button1.Text="Go";
        Controls.Add (button1);

        vartextBox1 = new TextBox();
        textBox1.Dock=DockStyle.Top;
        textBox1.Text="http://ja.stackoverflow.com/";
        Controls.Add (textBox1);


        var webBrowser=new WebBrowser();
        webBrowser.Dock=DockStyle.Fill;
        Controls.Add (webBrowser);

        // Event handler registration (if the confirm button is used)
        AcceptButton=button1;
        button1.Click+=(s,e)=>
        {
            // URL move
            webBrowser.Navigate(textBox1.Text);
        };

        // Event handler registration (direct return key handle)
        textBox1.KeyDown+=(s,e)=> 
        {
            if(!e.Handled&e.KeyCode==Keys.Return)
            {
                // URL move
                webBrowser.Navigate(textBox1.Text);
                e.Handled = true;
            }
        };
    }
}