Multiplay text box entry with predifined number

[Alkis Arxontas]

Hello :)
I have started using Visual Basic Express 2008 today, but I kind of feel I am not getting even the basics running..
I'd like to do the following:
I have a textbox and a button which I would like to use as the submit button. I'd just like to be able to add a value in the text box and by clicking on the calculate button it should show me the result of a multiplication by 0,5
If someone could help me with this and how to make that work, i'd much appreciate it!

[debasisdas]

Why not read some books to learn the basics of the language.

[Guido Geurs]

Private Sub Command1_Click()
Text1.Text = Val(Text1.Text) * 0.5
End Sub

[Alkis Arxontas]

Thanks for your answer! :)
I actually searched and figured out

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

If TextBox1.Text = "" Then
MessageBox.Show("Please insert a value.", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
Else
Dim a As String
a = TextBox1.Text
Label2.Text = Math.Round(a * 0.5)
End If
End Sub

How can I add Mathround to
Text1.Text = Val(Text1.Text) * 0.5
because your code seems to be better and cleaner than mine?

[Guido Geurs]

If TextBox1.Text = "" Then
   MessageBox.Show("Please insert a value.", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
Else
   Label2.Text = Math.Round(Val(TextBox1.Text) * 0.5)
End If

[Alkis Arxontas]

Perfect! Thanks a lot! :)