Completed
Last Updated: 02 Jul 2019 08:04 by ADMIN
Release R3 2019 (LIB 2019.2.708)
Created by: avani
Comments: 2
Category: TreeView
Type: Feature Request
1

Hi all,

 

RadTreeView is very nice control , For treeline we can give line style, color but we can't set line thickness,

I want to change thickness of Treeline can you guide me how to do it?

Completed
Last Updated: 01 Apr 2019 07:30 by ADMIN
At the moment the filter predicate is called only for the root nodes. A possible workaround is to recursively apply the filter logic for the child nodes as well.
Workaround:
private void Button1_Click(object sender, EventArgs e)
{
    this.radTreeView1.TreeViewElement.FilterPredicate = this.FilterNode;
    this.radTreeView1.Filter = "Custom";
}

private bool FilterNode(RadTreeNode node)
{
    Console.WriteLine(node.Text);
    if (node.Text.Contains("Child: 3"))
    {
        return true;
    }

    Stack<RadTreeNode> children = new Stack<RadTreeNode>();
    if (node.Nodes.Count > 0)
    {
        children.Push(node);
        while (children.Count > 0)
        {
            RadTreeNode current = children.Pop();
            foreach (RadTreeNode child in current.Nodes)
            {
                if (child.Text.Contains("Child: 3"))
                {
                    return true;
                }

                children.Push(child);
            }
        }
    }

    return false;
}
Approved
Last Updated: 24 Aug 2018 12:59 by ADMIN
Workaround:
private void radButton1_Click(object sender, EventArgs e)
{
    var allNodes = radTreeView1.TreeViewElement.GetNodes().ToList();

    int row = 0;
  
    Workbook workbook = new Workbook();
    Worksheet newWorksheet = workbook.Worksheets.Add();

    foreach (var item in allNodes)
    {

        CellSelection cell = newWorksheet.Cells[row, item.Level];
        cell.SetValue(item.Text);

        cell = newWorksheet.Cells[row++, 2];
        cell.SetValue(item.Checked);

    }

    var formatProvider = new XlsxFormatProvider();


    var bytes = formatProvider.Export(workbook);
    File.WriteAllBytes(@"D:\Test.xlsx", bytes);


}
Completed
Last Updated: 25 Jun 2018 10:07 by ADMIN
ADMIN
Created by: Dess | Tech Support Engineer, Sr.
Comments: 2
Category: TreeView
Type: Feature Request
2
Workaround:

        class CustomTreeView : RadTreeView
        {
            //Replace the default element with the custom one
            protected override RadTreeViewElement CreateTreeViewElement()
            {
                return new CustomTreeViewElement();
            }

            //Enable theming for the control
            public override string ThemeClassName
            {
                get
                {
                    return typeof(RadTreeView).FullName;
                }
            }
        }

        class CustomTreeViewElement : RadTreeViewElement
        {
            //Enable themeing for the element
            protected override Type ThemeEffectiveType
            {
                get
                {
                    return typeof(RadTreeViewElement);
                }
            }

            protected override bool ProcessContextMenu(Point location)
            {
                RadTreeNode node = this.GetNodeAt(location);
                if (node == null)
                {
                    RadContextMenu menu = new RadContextMenu();
                    RadMenuItem item = new RadMenuItem();
                    item.Text = "Add a root node";
                    menu.Items.Add(item);
                    item.Click += item_Click;
                    TreeViewContextMenuOpeningEventArgs args = new TreeViewContextMenuOpeningEventArgs(node, menu);
                    OnContextMenuOpening(args);

                    if (!args.Cancel)
                    {
                        menu.Show(this.ElementTree.Control, location);
                        return true;
                    }
                }
                return base.ProcessContextMenu(location);
            }

            private void item_Click(object sender, EventArgs e)
            {
                this.Nodes.Add(new RadTreeNode("New root"));
            }
        }
Completed
Last Updated: 31 Aug 2017 12:15 by ADMIN
Currently we do not support binding to the ToggleState.Indeterminate state automatically because it would require a change in the behavior of the Checked property. If you use the CheckedMember, the ToggleState.Indeterminate state is represent like ToggleState.On. 

Workaround: 
Subscribe to the NodeFormatting and NodeCheckedChanged events: 
void radTreeView1_NodeFormatting(object sender, Telerik.WinControls.UI.TreeNodeFormattingEventArgs e)
{
    Child child = e.Node.DataBoundItem as Child;
    if (child != null)
    {
        e.Node.CheckState = child.Status;
    }
}

void radTreeView1_NodeCheckedChanged(object sender, Telerik.WinControls.UI.TreeNodeCheckedEventArgs e)
{
    Child child = e.Node.DataBoundItem as Child;
    if (child != null)
    {
        child.Status = e.Node.CheckState;
    }
}
Approved
Last Updated: 15 Aug 2017 10:02 by ADMIN
ADMIN
Created by: Ralitsa
Comments: 0
Category: TreeView
Type: Feature Request
1

			
Approved
Last Updated: 15 Aug 2017 09:38 by ADMIN
To reproduce:

radTreeView1.Filter = "new";
var node = new RadTreeNode( "test" );
radTreeView1.Nodes.Add( node );
//here the node is not in the Nodes collection
if ( radTreeView1.Nodes.Contains( node ) == false )
{
 radTreeView1.Nodes.Add( new RadTreeNode( "test" ) );
}

Workaround: remove the filter, perform the desired check and restore the filter
Approved
Last Updated: 15 Aug 2017 09:36 by Jesse Dyck
Scenario: We have an object P which has two lists of child objects of types C1 and C2.
If we create a list of P and we try to bind the tree to this list and display the two lists as child nodes, we will not succeed.
Approved
Last Updated: 15 Aug 2017 09:33 by ADMIN
ADMIN
Created by: Julian Benkov
Comments: 0
Category: TreeView
Type: Feature Request
0
Private Sub LoadTvObjectInApp()
 
        Dim objectInApps As IQueryable(Of ObjectInApp)
        objectInApps = _context.ObjectInApps.Where(Function(c) (c.ApplicatieCode = "zis") AndAlso Not (c.GroepNaam = "hulp" AndAlso c.IsSysteemObject = True))
        
Approved
Last Updated: 15 Aug 2017 09:33 by Svetlin
Sort the selected nodes according to their position in the tree
Approved
Last Updated: 15 Aug 2017 09:23 by Jesse Dyck
ADMIN
Created by: Stefan
Comments: 1
Category: TreeView
Type: Feature Request
2
RadTreeView. Add node templates as ASP.NET AJAX - http://www.telerik.com/help/aspnet-ajax/treeview-templates-structure.html
Approved
Last Updated: 15 Aug 2017 09:23 by ADMIN
I need to drop a simple plain text from a textbox into a Rad Treeview.
I just read the forum, I'm mixing OLE Drag & Drop and RadTreeView Drag & Drop. The Events seems to be right and they seems to work fine.
But I'm just having a problem with the Visual Indicators of the treeview:

When I drag a regular node inside the treeview, I can see that visual indicators (the target node is highlighted, I can see a line of dots showing the direction above or below the target node, or the "forbidden" cursor, etc).
And when I actually try to drag a simple text inside the treeview, I don't see any of those stuff.
I need the same visual behavior when dropping a simple text. I need to see the indicators and I don't know how to activate them.
Completed
Last Updated: 20 Aug 2015 09:39 by ADMIN
ADMIN
Created by: Julian Benkov
Comments: 1
Category: TreeView
Type: Feature Request
6
RadTreeView - export, print content

possible supported file types: pdf, excel, html
Completed
Last Updated: 06 Apr 2015 13:56 by ADMIN
ADMIN
Created by: Stefan
Comments: 0
Category: TreeView
Type: Feature Request
1
drag select nodes. I.e - Left click and drag to highlight / select a bunch of nodes in a treeview. 
Ticket ID: 319445
Completed
Last Updated: 29 Jan 2015 16:40 by ADMIN
Add a possibility to set the auto-expand delay on drag-drop in RadTreeView.
Declined
Last Updated: 26 Dec 2014 14:34 by ADMIN
Allow setting the AutoExpand time of node when drag operation is performing.
Completed
Last Updated: 13 Dec 2014 09:00 by Jesse Dyck
Improve the drag and drop indicators by giving more clean user friendly design and positioning.
Completed
Last Updated: 18 Nov 2014 06:26 by ADMIN
Completed
Last Updated: 14 Nov 2014 13:13 by ADMIN
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