Completed
Last Updated: 26 Apr 2019 12:37 by ADMIN
Release R3 2018
To reproduce:
- Add 500 items.
Then set the following::
radDropDownList1.DropDownListElement.AutoCompleteSuggest.DropDownList.DefaultItemsCountInDropDown = 500;

Workaround:
radDropDownList1.DropDownListElement.AutoCompleteSuggest = new MySuggestHelper(this.radDropDownList1.DropDownListElement);

class MySuggestHelper : AutoCompleteSuggestHelper
{
    public MySuggestHelper(RadDropDownListElement owner ) : base (owner)
    {
    }
    public override void ShowDropDownList()
    {
        base.ShowDropDownList();
        this.DropDownList.Popup.UpdateLocation();
    }
}
Completed
Last Updated: 21 Mar 2019 15:04 by ADMIN
Release 2019.1.325 (03/25/2019)
How to reproduce: check the attached file

Workaround: create a custom drag-drop service 
public class CustomListControlDragDropService : ListControlDragDropService
{
    private RadListDataItem draggedItem;

    public CustomListControlDragDropService(RadListElement owner) 
        : base(owner)
    {
    }

    protected override void PerformStart()
    {
        base.PerformStart();

        RadListVisualItem draggedVisualItem = this.Context as RadListVisualItem;
        if (draggedVisualItem != null)
        {
            this.draggedItem = draggedVisualItem.Data;
        }
    }

    protected override void PerformStop()
    {
        base.PerformStop();

        this.DisposeHint();
        this.draggedItem = null;
    }

    protected override void OnPreviewDragDropCore(RadListElement targetList, RadListVisualItem targetElement)
    {
        int index = targetList.Items.Count - 1;
        if (targetElement != null)
        {
            index = targetList.Items.IndexOf(targetElement.Data);
        }
        
        if (this.draggedItem.Owner != targetList)
        {
            index++;
        }
        RadListElement dragedListView = this.draggedItem.Owner;

        IList<RadListDataItem> itemsToMove = new List<RadListDataItem>(dragedListView.SelectedItems.Count);

        foreach (RadListDataItem item in dragedListView.SelectedItems)
        {
            itemsToMove.Add(item);
        }

        dragedListView.BeginUpdate();
        foreach (RadListDataItem item in itemsToMove)
        {
            item.Selected =
                item.Active = false;
            dragedListView.Items.Remove(item);
        }

        dragedListView.EndUpdate();
        targetList.BeginUpdate();
        foreach (RadListDataItem item in itemsToMove)
        {
            if (index > targetList.Items.Count)
            {
                targetList.Items.Add(item);
            }
            else
            {
                targetList.Items.Insert(index, item);
            }

            item.Selected = item.Active = true;

            index++;
        }

        targetList.EndUpdate();
    }
}
Completed
Last Updated: 31 Jan 2019 11:30 by ADMIN
To reproduce:
- Add some items.
- Select an item and then  select it again 
- The SelectedItemsChanged is fired 3 times and it should fire only when the item is selected for the first time. 

Workaround:
Use SelectedIndexChanged instead.
Completed
Last Updated: 14 Dec 2018 15:41 by Dimitar
To reproduce: 
private void RadListControl1_SelectedItemsChanged(object sender, Telerik.WinControls.Data.NotifyCollectionChangedEventArgs e)
{
    string s = $"Selected Count = {radListControl1.SelectedItems.Count}, SelectedItems[0].Selected = {radListControl1.SelectedItems[0].Selected}, Items[0].Selected = {radListControl1.Items[0].Selected}";

    MessageBox.Show(s);
}

private void radButton1_Click(object sender, EventArgs e)
{
    string[] Names = { "Microsoft"/*, "Apple", "Google"*/ };

    radListControl1.Items.AddRange(Names);
}       

Workaround: 
Use SelectedIndexChanged event.
Completed
Last Updated: 14 Dec 2018 15:39 by Dimitar
To reproduce: multiple borders will be shown when you drag and drop multiple items in RadListControl. Please run the attached sample project and follow the steps from the attached gif file.

Workaround: this.radListControl1.SelectionMode = SelectionMode.One;
Completed
Last Updated: 12 Dec 2018 16:01 by Dimitar
To reproduce:

List<string> source;
public RadForm1()
{
    InitializeComponent();
       
    radListControl1.Items.AddRange(source);
}

Completed
Last Updated: 21 Sep 2018 14:06 by Bryan
To reproduce: run the atatched project, you will notice that the last item is not visible.

Workaround: add the items in the form's constructor.
Completed
Last Updated: 13 Mar 2018 09:27 by Dimitar
ADMIN
Created by: Dess | Tech Support Engineer, Sr.
Comments: 0
Category:
Type: Bug Report
0
To reproduce:

1. Add a RadListControl and add several items at design time.
2. Open the smart tag and select Edit Items. Then set the Selected property to true for one of the items. You will notice that the item is selected. However, when you click OK and close the RadListDataItem Collection Editor the selection is not preserved.

Workaround: set the Selected property at run time.
Completed
Last Updated: 14 Feb 2018 12:26 by Dimitar
Workaround:
this.radListControl1.VisualItemFormatting += RadListControl1_VisualItemFormatting;

 private void RadListControl1_VisualItemFormatting(object sender, Telerik.WinControls.UI.VisualItemFormattingEventArgs args)
 {
     DescriptionTextListVisualItem item = args.VisualItem as DescriptionTextListVisualItem;
     if (item == null)
     {
         return;
     }

     item.MainContent.EnableBorderHighlight = false;
     item.MainContent.EnableHighlight = false;
     item.DescriptionContent.EnableBorderHighlight = false;
     item.DescriptionContent.EnableHighlight = false;

     foreach (var c in item.Children)
     {
         this.SetNMouseProperties(c);
     }           
 }

 private void SetNMouseProperties(RadElement element)
 {
     element.ShouldHandleMouseInput = false;
     foreach (var item in element.Children)
     {
         this.SetNMouseProperties(item);
     }
 }
Completed
Last Updated: 13 Feb 2018 09:04 by ADMIN
How to reproduce: 
var descriptionItem = new DescriptionTextListDataItem()
{
    Text = "Chicken wings",
    DescriptionFont = new Font("Arial", 20, FontStyle.Bold),
    DescriptionText = "some description",

};

this.radListControl1.Items.Add(descriptionItem);

Workaround: handle the VisualItemFormatting event and set the font to the DescriptionContent element
https://docs.telerik.com/devtools/winforms/dropdown-listcontrol-and-checkeddropdownlist/listcontrol/customizing-appearance/formatting-items
Approved
Last Updated: 13 Feb 2018 05:49 by ADMIN
Workaround:  this.radListControl1.ItemHeight = 40;
Completed
Last Updated: 10 Aug 2016 10:50 by ADMIN
To reproduce:
- Add data items which have category, and set the SelectionMode to MultiExtended
- Then use the following code and select items from different category:
private void RadListControl1_SelectedItemsChanged(object sender, NotifyCollectionChangedEventArgs e)
{
    if (e.NewItems == null)
    {
        return;
    }

    var newCategory = (((RadListDataItem) e.NewItems[0]).DataBoundItem as MyData).Category;
    var prevCategory = (radListControl1.SelectedItem.DataBoundItem as MyData).Category;
    if (newCategory != prevCategory && radListControl1.SelectedItems.Count > 1)
    {
        radListControl1.SuspendSelectionEvents = true;
        //exception
        var items = radListControl1.SelectedItems.ToList();
        for (int i = 0; i < items.Count - 1; i++)
        {
            items[i].Selected = false;
        }
        //after this the selection is broken and the user cannot select an item
        //radListControl1.SelectedItem = null;

        radListControl1.SuspendSelectionEvents = false;
    }
}

Approved
Last Updated: 30 Mar 2016 08:18 by ADMIN
To reproduce:
 protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            AddListControl();
            radListControl1.AutoSizeItems = true;
            radListControl1.Font = new Font("Arial", 22);
        }

Workaround: After the font is set, set the AutoSizeItems to false and then back to true
Declined
Last Updated: 02 Mar 2016 07:21 by ADMIN
Created by: Georges
Comments: 6
Category:
Type: Bug Report
1
When I click on the scrollbar of a radlistcontrol to go down. The doubleclick event is fired but I don't think it should be fired.
Completed
Last Updated: 13 Oct 2015 12:47 by ADMIN
To reproduce:

1. Create a new WinForms project
2. Drag a RadListControl on the form
3.Start the application/project
3. Focus the Control and press Pos 1 / Home or End. >> The Application crashes due to a Telerik Control internal NullReference Exception

Workaround: 

public class CustomListControl : RadListControl
{
    public override string ThemeClassName
    {
        get
        {
            return typeof(RadListControl).FullName;  
        }
    }

    protected override void OnKeyDown(KeyEventArgs e)
    {
        if ((e.KeyCode == Keys.Home || e.KeyCode == Keys.End) && this.Items.Count == 0)
        {
            return;
        }
        base.OnKeyDown(e);
    }
}

Completed
Last Updated: 13 Oct 2015 11:17 by ADMIN
To reproduce:

1. Use the following code snippet:

public Form1()
{
    InitializeComponent();

    for (var x = 0; x < 1000; x++)
    {
        radListControl1.Items.Add(string.Format("i{0}", x));
    }

}

2. Select the first item and scroll down by using the mouse wheel.
3. When you click over a new item to select it, the vertical scroll-bar jumps to the top

Workaround: handle MouseDown event and change the active item
private void radListControl1_MouseDown(object sender, MouseEventArgs e)
{
    RadListVisualItem el = this.radListControl1.ListElement.ElementTree.GetElementAtPoint(e.Location) as RadListVisualItem;
    if (el!=null)
    {
        this.radListControl1.ActiveItem = el.Data;
    }
}
Completed
Last Updated: 17 Jul 2015 09:55 by ADMIN
Workaround, set the custom comparer in the SortStyleChanged event:

  void radListControl1_SortStyleChanged(object sender, SortStyleChangedEventArgs args)
        {
            radListControl1.ListElement.ItemsSortComparer = new MyComparer();
        }

        class MyComparer : IComparer<RadListDataItem>
        {
            public int Compare(RadListDataItem x, RadListDataItem y)
            {
                return ((Student)x.DataBoundItem).Id.CompareTo(((Student)y.DataBoundItem).Id);
            }
        }

       private void radButton1_Click(object sender, EventArgs e)
        {
            radListControl1.SortStyle = SortStyle.Ascending;
        }
Declined
Last Updated: 21 Jul 2014 13:15 by ADMIN
DECLINED: The Rebind method works as expected. This case was logged because ScrollToItem is not working after Rebind and this is due to the fact that our layout system is not synchronous. In order to be able to ScrollToItem, you need to call UpdateLayout first:
            RadListControl1.SelectedItem = itemToSelect
            Me.RadListControl1.ListElement.UpdateLayout()
            RadListControl1.ScrollToItem(itemToSelect)
Completed
Last Updated: 05 Jun 2014 07:08 by ADMIN
If the end-users tries to navigate through the items of a RadListControl or RadDropDownList by using the arrow keys, he/she should skip the disabled items.
Completed
Last Updated: 23 Apr 2014 12:56 by ADMIN
ADMIN
Created by: Martin Vasilev
Comments: 0
Category:
Type: Bug Report
0
The VisualItem argument of CreatingVisualListItem event is always null.
1 2