Do you still remember when you used a disk last time? Or do you even know what a floppy disk or zip disk is? I don’t recall when was the last time I used a floppy disk, though I have a box of floppy disks lying there. But I remember it was in 2002 when I used a zip disk to transfer some “large” amount of files. So what is the next in line to […]
In my previous post regarding the high memory usage issue with my new HP Envy laptop, which runs on Windows 8.1 Pro with 8GB RAM, I disabled Ndu.sys which, according to some people’s experience, was said to be the culprit. However, Ndu.sys does not seem to be the root cause of my issue because the high memory usage issue came back again yesterday, and eventually my computer crashed with a blue screen shown below. […]
When accepting credit card payment in your web application, the best practice is to validate customer’s credit card number before sending it to the payment gateway. This post will show you how to use ASP.NET CustomValidator to check if a credit card number is well-formatted or randomly generated by using Luhn algorithm.