To properly escape a string value that you put in a javascript string literal, you replace \ with \\ and ' with \'. Before that you can replace a line break with the escape code \n. And don't use the language attribute in the script tag. It's been deprecated for many years. this.ClientScript.RegisterStartupScript(this.GetType(), "Message", "alert('" + ex.Message.Replace("\r\n", @"\n").Replace(@"\", @"\\").Replace("'", @"\'") + "');"); Despite everything, the person most likely to be fooling you next is yourself.

Having spent many years designing and programming ATE, one area that I can't stress enough is bit manipulation. Most hardware testing depends a lot on monitoring or modifying status and control bits, and that's not particularly easy in VB. Another area that bites beginning testers is comparisons of measured analog values with thresholds, especially near zero. You could set up some situations where the obvious solution might result in a divide by zero or range violation and ask how the applicant would program the test. Of course, if you're just talking about automated software testing, all of the above is nul. "A Journey of a Thousand Rest Stops Begins with a Single Movement"