Re: how to add Select item in combobox in silverlight 3

Question

Hi I want to add default item like --Select-- in combobox for silverlight 3 for both static/dynamic population of combo box. Here is the sample code.Please Help. List _date = new List () { new date() {Name=Mins} new date() {Name=Hour} new date() {Name=Day} new date() {Name=Week} new date() {Name=Month} new date() {Name=Year} }; cmbPerweek1.ItemsSource = _date; // cmbPerweek1.Items.Add(--Select Time Interval--); cmbPerweek1.Items.Insert(0--Select Time Interval--); cmbPerweek1.SelectedIndex = 0; This is one type and another dropdown is loaded from Service.How to add for that too.When it run the Application it displays Operation not supported on read-only collection... Thanks in Advance.

Priya Linge · Answer

Hi Please try this. MainPage.Xaml : MainPage.xaml.cs : public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); List _date = new List () { new dataclass() {Name=Mins} new dataclass() {Name=Hour} new dataclass() {Name=Day} new dataclass() {Name=Week} new dataclass() {Name=Month} new dataclass() {Name=Year} }; // comboBox1.ItemsSource = _date.ToList(); comboBox1.Items.Add(--Select--); comboBox1.SelectedIndex = 0; for (int i = 0; i { comboBox1.Items.Add(_date[i].Name.ToString()); } } } public class dataclass { private string name; public string Name { get { return name;} set { name = value; } } } Please chk attached code file. Hope this will help you. Thanks.

Re: how to add "Select" item in combobox in silverlight 3