You are creating an ASP.NET page for your company's Web site. Customers will use the ASP.NET page to enter payment information. You add a DropDownList control named oPaymentTypeList that enables customers to select a type of credit card and bank accounts. You need to ensure that customers select a credit card type. You want a default value of Select to be displayed in the oPaymentTypeList control. You want the page validation to fail if a customer does not select a payment type from the list. What should you do?

Practice this Upwork Skill Test. Freelancers take skill tests on Upwork to show their skills to potential clients and to make themselves more marketable. Upwork suggests you take as many tests as you want -  your skills are shown on your Upwork profile page.