Code allowing the key entered to validate

:blush: I want a Code allowing the key entered to validate... Net(DotNet) TO CANCEL An OPERATION BY SUPPORT OF KEY ECHAP...

You lost me.
Could you please rephrase the question?

use textBox_Kepress() event

vb Code:

private sub textBox1_KeyPress(sender as objectm, e as KeyEventArgs)
   if e.KeyCode = keys.Enter then
      messageBox.show(textBox1.text)
   end if
end sub

Thank you initially for your answer then me I have a textbox then I want to click on the entered key of keyboard I want post a message which contain the value which J have déja typed on this textbox

I updated my previous.
When you hit the enter key in the textbox, the value init will be displayed in a message box.

but me J made
Private Sub Form1_KeyPress(ByVal sender As Object, ByVal E Have KeyEventArgs) Yew e.KeyCode = Keys.enter Then MsgBox("bonjour") End If End Sub
then when I click on entry of keyboard it posts anything!!

try this one

vb Code:

private sub form1_KeyDown(sender as object, e as KeyEventArgs) Handles KeyDown
   messageBox.show("Bonjour")
end sub

private sub form1_KeyDown(sender have object, E have KeyEventArgs) Handles KeyDown messageBox.show("Bonjour")end sub that it gives me anything!!

but a condition! I want that in vb.net 2003

This is really confusing me.
WHAT should react to keypress? A textbox? A form?
What key should react to being pressed? The enter key?

me I want quite simply when I to fill the textbox and I click on entry of keyboard gives me a message

Heres an example:

VB.Net Code:

Private Sub TextBox1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyDown
        If e.KeyCode = Keys.Return Then
            MessageBox.Show("You pressed enter")
        End If
    End Sub

is there any difference between keys.Return and keys.Enter?

good with keys.return it goes t-pieces well then when I click on entry it posts me the message but with keys.enter No