The only downside to this is that if you clear the Drop Down List and rebind the control, (say to present a new set of options) you’ll lose the static items.
But for most of your “one time” loads, this works great.
All credit cards are 16 digits and the 16th digit can be calculated based on the first 15 numbers.
Typically when I’m working with Drop Down Lists on my web pages, I like to add a “Select…” option to the list to prompt the user for a value.
You can use the Validation controls to perform very different types of form validation tasks.For example, suppose your user submits the form without entering a mandatory field.If you validate the form using j Query, you can notice this and alert the user to their mistake instead of submitting the form.The Append Data Bound Items property will take any statically created List Items you have in the control and bind them to the Drop Down List before your databound elements are added.This is nice because it prevents you from having to do any fancy data sorting tricks or manual code behind additions of List Items.