modifying keypress

[Guest]

Hi,
In VB6 you used to be able to modify keys as they were pressed in the
KeyPress event e.g. change it uppercase, remove certain characters etc.

How do I do this in .NET ?

Regards
Michael

 

[DazedAndConfused]

In its simplest form:

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As
System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Dim myChar As String
myChar = e.KeyChar
TextBox1.Text += UCase(e.KeyChar)
e.Handled = True
End Sub

You will have to enter more code to handle/not handle othe keypress events

 

[hoppy]

Hi,
In VB6 you used to be able to modify keys as they were pressed in the
KeyPress event e.g. change it uppercase, remove certain characters etc.

How do I do this in .NET ?

Regards
Michael

Texboxes have a charactercasing property to only allow upper/lower case if
desired.
They have a keypress event, put code in there to handle the keypress, e.g.:


Private Sub TextBox1_KeyPress(ByVal sender As System.Object, ByVal e _
As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If e.KeyChar = "j" Then
'Tell the textbox the event has been handled
'and the character wont be displayed...
e.Handled = True
End If
End Sub

 

[DazedAndConfused]

Sorry, should of been:

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As
System.Windows.Forms.KeyPressEventArgs) Handles

TextBox1.KeyPress
TextBox1.Text += UCase(e.KeyChar)
e.Handled = True

End Sub

 

[Guest]

Thanks for that. Why is it necessary to call the event from within itself ?