I have two RadListBox. Data in first box is populated from database using RadListBoxItem and I have set an attribute for each item. In the second box, I've enabled custom context menu. After I adding the item from first box to second box, user can select some option using the context menu. On context menu selection, I need to get the Attribute I set before and update the attribute value according to the context menu selection so I can used it for later process.Currently, I unable to even the attributes I set previously using the context menu's javascript. Please guide how to read ListItem's attribute and update the attribute to a new value.
This is how I add the item to the first box with attribute.
this._sortingList = new List<
Sorting
>();
this._sortingList = DBConnection.getSortingList();
foreach (var s in this._sortingList)
{
RadListBoxItem item = new RadListBoxItem();
item.Text = s.Description;
item.Value = s.Id.ToString();
item.Attributes["myorder"] = "0";
this.RadListBox1.Items.Add(item);
}
This is custom context menu javascript.
function showContextMenu(sender, e) {
var menu = $find("<%= cm1.ClientID %>");
var rawEvent = e.get_domEvent().rawEvent; menu.show(rawEvent);
e.get_item().select();
$telerik.cancelRawEvent(rawEvent);
}
function onItemClicked(sender, e) {
var listBox = $find("<%= RadListBox1.ClientID %>");
var listItem = listBox.get_selectedItem();
var menuItem = e.get_item();
if (menuItem.get_text() == "Ascending"){
alert(listItem.get_attributes().getAttribute("myorder"));
}
else if (menuItem.get_text() == "Descending") {
alert(listItem.get_attributes().getAttribute("myorder"));
}
}