WP7 ListPicker Set SelectedItem Problem

Question

I have a list picker propagated by two strings from an XML file, one a name and one a value.

        XmlReader xml = XmlReader.Create("file.xml");
        XDocument _doc = XDocument.Load(xml);

        var stringNames = from query in _doc.Descendants("string")
                     select new CustomValue
                     {
                         StringName = (string)query.Attribute("name"),
                         StringValue = (string)query.Attribute("value"),
                     };

        Listpicker.ItemsSource = stringNames;

    public class CustomValue
    {
        public string StringName             
        {
            get;
            set;
        }

        public string StringValue
        {
            get;
            set;
        }
    }

I can read the value OR name by using ((appname.pagename.CustomValue)(this.Listpicker.SelectedItem)).StringValue

But i cannot set the selectedItem, if I used a method similar to the one above it changes the value of the StringValue in the class CustomValue.

Any help very much appreciated!

Thanks :)

Answer 1

You can't set SelectedItem = "something" as the collection holds instances of CustomValue not string . You have to make the seleccted item one of the availabel items.

Let's say you wanted to selected the first item in your collection. There are 2 ways to do this:

Listpicker.SelectedItem = stringNames.First();

or

Listpicker.SelectedIndex = 0;