BrianPeek.com

I need some help.  I bought a Phidgets Text LCD, and I don't know how to display text using Visual Basic.  I can do it fine with C#, but I am accustomed to Visual Basic.  I am preforming the same setup steps in VB as I am in C#, but in the different syntex.  I get "Object reference not set to an instance of an object."  or NullRefrence error.

Public Class Form1

    Dim lcd As Phidgets.TextLCD

Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
        lcd.open()
        lcd.rows(0).DisplayString = textbox1.text
        lcd.rows(1).DisplayString = textbox2.text
End Sub


I think it has something to do with me not declaring a "new" something or other, but I don't know where or what I need to declare.  I'm going to play around with it more, but I figured I'd ask here, because you seem to know what you're talking about when it comes to phidgets.

Thanks for your time!~!

You're assumption is correct.  You'll either need to declare your member variable as:

Dim lcd As New Phidgets.TextLCD()

Or, create a new instance of the TextLCD class somewhere else in your program, like the form constructor or something as follows:

lcd = new Phidgets.TextLCD()