.NET Simple Browsing for an Application with the WebBrowser

This .NET application is a basic example of using the WebBrowser which allows embedding a web browser in an application. This could make implementing online help from within an app very easy. Its rendering is more basic than that of a formal browser so it cannot really be used to create an actual web browser.

using System;
using System.Drawing;
using System.Windows.Forms;

namespace ExampleProgram
{
	class WebBrowserEx : Form
	{
		private WebBrowser wb;
		private TextBox tb;
		[STAThread]
		static void Main()
		{
			Application.Run(new WebBrowserEx());
		}
		public WebBrowserEx()
		{
			Text = "WebBrowser Example";
			BackColor = SystemColors.Window;
			ForeColor = SystemColors.WindowText;

			tb = new TextBox();
			tb.Parent = this;
			tb.BackColor = SystemColors.Window;
			tb.ForeColor = SystemColors.WindowText;
			tb.Top = 0;
			tb.Left = 0;
			tb.Width = ClientSize.Width;
			tb.Height = 16;
			tb.BorderStyle = BorderStyle.FixedSingle;
			tb.KeyPress += tb_KeyPress;

			wb = new WebBrowser();
			wb.Parent = this;
			wb.Top = 17;
			wb.Left = 0;
			wb.Width = ClientSize.Width;
			wb.Height = ClientSize.Height - 17;

			ClientSizeChanged += Form_ClientSizeChanged;
		}
		private void Form_ClientSizeChanged(object sender, EventArgs e)
		{
			tb.Width = ClientSize.Width;
			wb.Width = ClientSize.Width;
			wb.Height = ClientSize.Height - 17;
		}
		private void tb_KeyPress(object sender, KeyPressEventArgs e)
		{
			if(e.KeyChar == (char)13)
			{
				if(!string.IsNullOrWhiteSpace(tb.Text))
					wb.Navigate(tb.Text);
			}
		}
	}
}