Hmm well maybe it's the combination of manually added groups with manually added items? Not sure. I was thinking that using "Text" in the sort descriptor propertyname was perhaps the issue...?
Here is a sample of code that illustrates the issue. To use this, create a windows forms application, and add a RadListView control to Form1 called 'uiColourList', and replace the form1.cs with the code below.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Telerik.WinControls.Data;
using Telerik.WinControls.Enumerations;
using Telerik.WinControls.UI;
namespace TelerikListView
{
public partial class Form1 : Form
{
private List<Colour> colours = new List<Colour>();
private List<Colour> selectedColours = new List<Colour>();
public Form1()
{
InitializeComponent();
setupColourList();
}
private void setupColourList()
{
colours.Add(new Colour("Colour 1",true, false));
colours.Add(new Colour("Colour 5",true, false));
colours.Add(new Colour("Colour 2",true, false));
colours.Add(new Colour("Colour 3",true, false));
colours.Add(new Colour("Colour 7",true, false));
colours.Add(new Colour("Colour 6",true, false));
colours.Add(new Colour("Colour 4", false, false));
colours.Add(new Colour("Colour 8", false, false));
colours.Add(new Colour("Colour 9", false, false));
colours.Add(new Colour("Colour A",false, false));
colours.Add(new Colour("Colour C",false, false));
colours.Add(new Colour("Colour D",false, true));
colours.Add(new Colour("Colour E",false, true));
colours.Add(new Colour("Colour F",false, true));
colours.Add(new Colour("Colour B",false, true));
selectedColours.Add(new Colour("Colour 1", true, false));
selectedColours.Add(new Colour("Colour F", false, true));
}
private void Form1_Load(object sender, EventArgs e)
{
uiColourList.Items.Clear();
uiColourList.Groups.Clear();
uiColourList.EnableGrouping = true;
uiColourList.EnableSorting = true;
uiColourList.ShowCheckBoxes = true;
uiColourList.ShowGroups = true;
var availableColoursGroup = new ListViewDataItemGroup("Available Colours");
var unavailableColoursGroup = new ListViewDataItemGroup("Unavailable Colours");
var deletedColoursGroup = new ListViewDataItemGroup("Deleted Colours");
availableColoursGroup.Text = "Available Colours";
unavailableColoursGroup.Text = "Unavailable Colours";
deletedColoursGroup.Text = "Deleted Colours";
uiColourList.Groups.Add(availableColoursGroup);
uiColourList.Groups.Add(unavailableColoursGroup);
uiColourList.Groups.Add(deletedColoursGroup);
foreach (var masterColour in colours)
{
var item = new ListViewDataItem(masterColour.Name);
item.Tag = masterColour;
if (selectedColours.Any(m => m.Name == masterColour.Name))
item.CheckState = ToggleState.On;
if (!masterColour.Available)
item.Group = unavailableColoursGroup;
else
{
item.Group = availableColoursGroup;
}
if(masterColour.Deleted)
{
item.Group = deletedColoursGroup;
}
uiColourList.Items.Add(item);
}
uiColourList.EnableCustomGrouping = true;
uiColourList.SortDescriptors.Add(new SortDescriptor("Text", ListSortDirection.Ascending));
uiColourList.EnableSorting = true;
}
}
public class Colour
{
public bool Deleted { get; set; }
public string Name { get; set; }
public bool Available { get; set; }
public Colour(string name, bool available, bool deleted)
{
Name = name;
Available = available;
Deleted = deleted;
}
}
}