combobox load on demand without datasource control

[Vlad]

Is there  an example of combobox load on demand
without  using datasource control  but directly from business object at runtime  ?

[Vlad]

I have found something simular to what I need in demos:
/Controls/Examples/Integration/GridInCombobox/DefaultCS.aspx

but I do not want to use grid,  I just need google like suggestion functionality so people can
use arrow keys to navigate up/down suggested strings in dropdown. The example above behaves unnatural when
arrow keys are used.
I've done this many times using jquery in php but for this project I would like
to stay away from touching javascript  and also do not want to use datasource controls of any type.

[Kalina]

Hi Vlad,

You can easily create a list of objects and populate the RadComboBox at ItemsRequested event handler:

<telerik:RadComboBox ID="RadComboBox1" runat="server"
    ShowDropDownOnTextboxClick="false"
    EnableLoadOnDemand="true"
    OnItemsRequested="RadComboBox1_ItemsRequested">
</telerik:RadComboBox>

protected void RadComboBox1_ItemsRequested(object sender, RadComboBoxItemsRequestedEventArgs e)
{
    RadComboBox combo = sender as RadComboBox;

    List<TestItems> items = ComboObjectData.GetItems();
    var result = from item in items
                    where item.Name == e.Text

                    select new
                    {
                        item.ID,
                        item.Name
                    };

    foreach (var i in result)
        combo.Items.Add(new RadComboBoxItem(i.Name, i.ID.ToString()));

}

public class ComboObjectData
{
    public ComboObjectData()
    {
        //
        // TODO: Add constructor logic here
        //
    }

    public static List<TestItems> GetItems()
    {
        List<TestItems> itemsList = new List<TestItems>();
        itemsList.Add(new TestItems(1, "a"));
        itemsList.Add(new TestItems(2, "b"));
        itemsList.Add(new TestItems(3, "c"));
        itemsList.Add(new TestItems(4, "d"));
        itemsList.Add(new TestItems(5, "e"));
        itemsList.Add(new TestItems(6, "f"));
        return itemsList;
    }
}

public class TestItems
{
    private string _text;
    private int _id;

    public string Name
    {
        get { return _text; }
        set { _text = value; }
    }
    public int ID
    {
        get { return _id; }
        set { _id = value; }
    }

    public TestItems(int id, string text)
    {
        _id = id;
        _text = text;
    }
}

All the best,
Kalina
the Telerik team