RadioButton: 21.1 How can I have the first item in the radiobuttonlist selected? VB.NET
RadioButtonList1.Items(0).Selected = true
C#
RadioButtonList1.Items[0].Selected = true;
21.2 What is the difference between a series of RadioButton controls and a series of Checkbox controls? RadioButton control is designed to allow users to choose atleast one option from a list of available options. Checkbox is designed to allow users to choose from zero to all options. 21.3 How can I enforce that only one radiobutton gets selected among a list of Radiobutton controls? Set same Groupname for the radiobutton controls