VS 2008 WebBrowser Problem

Hi There,

I am trying to make a program were you ask it a question and it gives you the answer in a webbrowser on the same form page, here is the coding:
Public Class Form1

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

If TextBox1.Text = "What's the weather today" Then RichTextBox1.Text = "Finding weather for **********, ***** today"
WebBrowser1.Navigate("http://www.bbc.co.uk/weather/2653877")

Reset()


If TextBox1.Text = "Hello" Then RichTextBox1.Text = "Hello"

If TextBox1.Text = "Did Manchester United win" Then



WebBrowser1.Navigate("http://www.bbc.co.uk/sport/football/live-scores")

Reset()

If TextBox1.Text = "Did Manchester City win" Then RichTextBox1.Text = "I'm on it"
WebBrowser1.Navigate("http://www.bbc.co.uk/sport/football/live-scores")

Reset()

If TextBox1.Text = "Did Chelsea win" Then RichTextBox1.Text = "I'm on it"
WebBrowser1.Navigate("http://www.bbc.co.uk/sport/football/live-scores")

Reset()

If TextBox1.Text = "Did Everton win" Then RichTextBox1.Text = "I'm on it"
WebBrowser1.Navigate("http://www.bbc.co.uk/sport/football/live-scores")

Reset()

If TextBox1.Text = "Who won football" Then RichTextBox1.Text = "I'm on it"
WebBrowser1.Navigate("http://www.bbc.co.uk/sport/football/live-scores")

Reset()


If TextBox1.Text = "What is pythagorean theorem" Then RichTextBox1.Text = "A theorem stating that the square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of the lengths of the other sides. It is mathematically stated as c 2 = a 2 + b 2 , where c is the length of the hypotenuse and a and b the lengths of the other two sides."





End If

End Sub














But every time I enter a command into the "textbox1", it just shows me the sports page and nothing else

Can someone please help :)

Thanks