Where do I put this code?

[WackoWolf]

I understand the code as to what it does, and I also understand why I want it. The problem I have is where do I put it. Do I put it in the button for the calculation or somewhere else? This is the code I want to use.

Private Sub txt""_KeyPress (ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventsArgs) Handles txt"".KeyPress
Const Enter = Chr(13)
 
If e.KeyChar = ENTER Then
btnCalculate.Focus()
ElseIf Asc(e.KeyChar) < Asc("0") Or Asc(e.KeyChar) > Asc("9") Then e.Handled = True
Beep()
MessageBox>Show ("You can only enter a number here.", "Data Entry Error". MessageBoxButtons.Ok, MessageBoxIcon.Error)
 
End If
End Sub

 

[JuggaloBrotha]

what you have posted is the entire event for the button, just past it in the code window outside of any subs (the code you have is a sub)

although i would suggest a few changes to increase readability:

Private Sub txt_KeyPress (ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventsArgs) Handles txt.KeyPress
  If Asc(e.KeyChar) = Keys.Enter Then
    btnCalculate.Focus()
  ElseIf IsNumeric(e.KeyChar) = False Then e.Handled = True
    Beep()
    MessageBox.Show("You can only enter a number here.", "Data Entry Error". MessageBoxButtons.Ok, MessageBoxIcon.Error)
  End If
End Sub

 

[WackoWolf]

Thank You, I will try that.

This Forum is the best, glad to have found it

WackoWolf

 

[jmcilhinney]

Depending on your policy regarding third-party controls, the Quantum WFC library contains a NumberBox control that handles all of the numerical validation for you. It is quite configurable and the library also includes many other great components. It is generally preferable to prevent a user making a mistake in the first place than fixing it after the fact. Prevention and cure, you know. See my signature for a link. Only supports .NET 1.x at the moment but a 2.0 version is on the way.

 

[WackoWolf]

Is this add in free, or is it only good for 30 days?

 

[jmcilhinney]

Is this add in free, or is it only good for 30 days?

Have you followed the link in my signature? What does it say?