Handled the keypress event from the firts textbox... and put the value in the others two...
example(Keypress):
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Dim valueTextBox1 As String
valueTextBox1 = Me.TextBox1.Text
Me.TextBox2.Text = valueTextBox1
Me.TextBox3.Text = valueTextBox1
End Sub
or with the event text change.....
Private Sub TextBox1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
Dim valueTextBox1 As String
valueTextBox1 = Me.TextBox1.Text
Me.TextBox2.Text = valueTextBox1
Me.TextBox3.Text = valueTextBox1
End Sub