Now it's time to make fun from what we have learnt

We will make an application that makes us guess a number between 1 and 10 and making the computer as the jury. The computer will speak out whether the number we have input is too high, too low or correct. Firstly, create a new Website on ASP.NET web developer and build a simple interface like below.

Also, include a label, name it as lblGuessedNumber and make it as invisible.

This will store a randomly generated number.

Add the Speech Object Library Object as reference.

To generate a random number, we make use of the Random class. On Page_Load event we place the following code snippet.

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles

Try

If Not IsPostBack() Then

Dim number As Integer

Dim rnd As New Random() ' Random number generator

number = rnd.Next(1, 10) ' Generates random number between 1 and 10

' Storing the random number in the hidden label

lblGuessedNumber.Text = number
End If

Catch ex As Exception

Throw ex

End Try

End Sub

Notice that the code is placed inside the Not IsPostBack() if statement as we do not want to generate a random number on every postback. Now, to validate the number that the user has input, we will make use of the following code snippet in the button's click event.

Protected Sub btnGuess_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnGuess.Click

Try

' Variables declaration

Dim voice As New SpVoice

Dim userNumber As Integer

Dim computerNumber As Integer ' Parse the numbers and store then in integer variables

userNumber = Integer.Parse(txtNumber.Text)

computerNumber = Integer.Parse(lblGuessedNumber.Text) ' Speak the verdict

If (userNumber <>

voice.Speak(txtNumber.Text & " is too low!")

ElseIf (userNumber > computerNumber) Then

voice.Speak(txtNumber.Text & " is too high!")

Else

voice.Speak("Cool man! You guessed the correct number!")

End If

Catch ex As Exception

Throw ex

End Try

End Sub