title: How disable a button if there is no text in multiple textboxes in VB?
body: <p>I have 9 TextBoxes called <code>Textbox1</code> all the way to <code>Textbox9</code>. I also have a button called <code>Letter</code> which selects a random letter from an array. I have another button called <code>Start</code>. This button when pressed displays a timer counting down from 30 seconds all the to zero. I want this button to take place only if all the 9 textboxes have text in them. I tried the following but it did not seem to work:</p>