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Posted

How to prevent the User from writing some characters in a TextBox.

For example: If User try to type digits - the TextBox will stay clear.

 

In VB6 I did it very simply: KeyAscii = 0 in TextBox_KeyPress event, but how do it in VB.NET ???

Thanks.

  • *Experts*
Posted

Set the Handled property of the KeyPressEventArgs (e) to True, to

show that the keypress has been handled by your code.

 

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
 If Char.IsDigit(e.KeyChar) Then
   e.Handled = True
 End If
End Sub

 

Keep in mind that if the user copies a number and pastes it into

the textbox, the number will slip through this protection, so you

may want to reconsider how you work it if this turns out to be a

problem.

"Being grown up isn't half as fun as growing up

These are the best days of our lives"

-The Ataris, In This Diary

  • *Experts*
Posted

I can... how about blinking text? :D

 

Maybe those types of things should be saved for another

thread... :)

"Being grown up isn't half as fun as growing up

These are the best days of our lives"

-The Ataris, In This Diary

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