SilverlightTreeView Forum Rss Feed

New Post: How can i drag and drop treeview nodes?

jenik15 — Mon, 19 Jul 2010 11:33:59 GMT

Why drag and drop doesnot work with my code:

<toolkitDrag:TreeViewDragDropTarget AllowDrop="true" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" BindingValidationError="TreeViewDragDropTarget_BindingValidationError" ItemDroppedOnSource="TreeViewDragDropTarget_ItemDroppedOnSource" ItemDroppedOnTarget="TreeViewDragDropTarget_ItemDroppedOnTarget" ItemDragStarting="TreeViewDragDropTarget_ItemDragStarting">

<controls:TreeView Name="treeView">

<controls:TreeView.ItemTemplate>

<toolkit:HierarchicalDataTemplate ItemsSource="{Binding Children}">

</StackPanel>

</toolkit:HierarchicalDataTemplate>

</controls:TreeView.ItemTemplate>

</controls:TreeView>

</toolkitDrag:TreeViewDragDropTarget>

</Grid>

public OrganizationTree()

{

InitializeComponent();

var organizationNodes=new List<OrganizationNode>();

var firstNode = new OrganizationNode() { FullDescription = "Description" };

firstNode.Children.Add(new OrganizationNode() { FullDescription = "desc1" });

firstNode.Children.Add(new OrganizationNode() { FullDescription = "desc2" });

firstNode.Children.Add(new OrganizationNode() { FullDescription = "desc3" });

firstNode.Children.Add(new OrganizationNode() { FullDescription = "desc4" });

organizationNodes.Add(firstNode);

this.treeView.ItemsSource = organizationNodes;

}

Can you give some information how to add drag and drop when itemsource set for treeview?

New Post: Drag and drop

simwood11 — Tue, 27 Jan 2009 11:09:57 GMT

Hi,
I am investigating a way of dropping nodes outside of the control. i.e. I have a wrap panel next to the tree view that I want to populate with individual items from the tree view.
How can I facilitate that using drag and drop?

Many thanks.

New Post: Treeview in Silverlight Toolkit

DevCorner — Fri, 16 Jan 2009 17:00:41 GMT

Hi,

I never tried to compete MS :)

Alex

New Post: Drag and Drap not working

DevCorner — Fri, 16 Jan 2009 17:00:22 GMT

Hi,

Strange issue... could you provide some repro code?

Alex

New Post: Drag and Drap not working

ree — Fri, 12 Dec 2008 12:26:12 GMT

hi,
in my case i'm retreving some nodes details from database and adding treenodes dynamically to rootnode. while adding like this i'm not able to drag and drop node. if i hardcode some nodes in xaml then i can able to drag and drop. can any one give me solution for this.

Thanks in advance,
Ree.

New Post: Treeview in Silverlight Toolkit

micmit — Wed, 29 Oct 2008 02:37:31 GMT

It would be interesting to see if someone could draw comparisons between Silverlight TreeView and TreeView in Silverlight Toolkit just released. It took Microsoft a long time to release this control , and now we have 2 open sources we can select from. Similar situation for DataGrid(s) in Silverlight/WPF where we have free offerings from DevExpress/Xceed versus Microsoft Datagrid.

New Post: A problem with control widht and height?

ckarbass — Sat, 18 Oct 2008 20:30:26 GMT

Hi Alex, $0$0$0$0It is the same problem that daniCE mentions above. If you leave out the width of the treeview, it doesn't expand to the width of the largest child.$0$0$0$0$0For example, there is no width or height specified in the following: $0$0$0$0$0$0 <local:TreeView x:Name="foldersTree" EnableCheckboxes="False" EnableDragAndDrop="False" $0$0 SelectionChanged="foldersTree_SelectionChanged"$0$0 Populate="foldersTree_Populate"$0$0 MultiSelect="False"$0$0 Margin="5"$0$0 BorderThickness="0" >$0$0$0$0$0What happens is the tree width is like 10 pixels even though the actual width should be much wider. Also, as an fyi, I am dynamically populating the tree.$0$0$0$0$0I just need the tree...I don't need the border, scrolling, fixed width, etc....I am putting this in a grid and will have the grid handle all of that for me.$0$0$0$0$0Thanks for any help, this treeview control is great...$0$0

New Post: A problem with control widht and height?

DevCorner — Sat, 11 Oct 2008 05:03:28 GMT

Hi Cyrus,

Could you please provide me with a repro? I'm not aware of the problem, so you repro will help me to solve it.

Thanks,
Alex

New Post: A problem with control widht and height?

ckarbass — Fri, 10 Oct 2008 21:54:55 GMT

Hello, I'm using the 10/3 release and I can't get the tree to have a width of the largest tree view node. Is the current implementation of the tree constrained to having a fixed width? $0Thanks!$0$0Cyrus$0

New Post: TreeView not Working on RC0

DevCorner — Sat, 04 Oct 2008 04:37:27 GMT

Thanks, oldlaurel.
Used "2." and "3." from your solution, since "1." already did :)
There is new cange set, RC0 compatible.

Regards,
Alex

New Post: TreeView not Working on RC0

oldlaurel — Fri, 03 Oct 2008 13:32:08 GMT

Just trust me :)

There are only 4 things to make your 11-sep release work on Silverlight RC0:

1. Create folder named "themes" in your "TreeView" project and move generic.xaml to it.
2. In TreeViewNode.cs, line 1092 change
    for (num = base.Canvas.Children.Count; num >= 0; num--)
    to
    for (num = base.Canvas.Children.Count - 1; num >= 0; num--)
3. In TreeViewCheckBox.cs, line 19 change
    internal class TreeViewCheckBox : ExtendedTextControl
    to
    public class TreeViewCheckBox : ExtendedTextControl

4. In TreeViewCheckBox.cs, line 55 change
    this.OnMouseDown(this, new MouseButtonEventArgs());
    to
    this.OnMouseDown(this, null);

Build, start, enjoy.

New Post: TreeView not Working on RC0

DevCorner — Fri, 03 Oct 2008 12:45:51 GMT

Where did you got info about internal creation?
No, it is not because of internal class....

New Post: TreeView not Working on RC0

oldlaurel — Fri, 03 Oct 2008 03:55:58 GMT

Problem not in generic.xaml, but in

internal class TreeViewCheckBox

Creation of internal class objects is disabled in RC0. Make it public. (И будет вам счастье.)

New Post: TreeView not Working on RC0

DevCorner — Wed, 01 Oct 2008 12:22:16 GMT

Thanks, will fix the control to work under RC0/RTW in next few days.

Regards,

Alex

New Post: TreeView not Working on RC0

scgm11 — Wed, 01 Oct 2008 00:21:36 GMT

the proble was the firts style of the generic.xaml (the one of the checkboxes), then there was an index problem when you open a leave of the tree, is solved with a -1 and > 0 (previous >= 0)

New Post: TreeView not Working on RC0

scgm11 — Sat, 27 Sep 2008 02:37:47 GMT

Any Ideas??
is not working the example or my project.
any workaround?? is somtthing of the generic.xaml ??

New Post: Disable a node

DevCorner — Thu, 25 Sep 2008 16:55:58 GMT

Strange... This should work... Could you provide repro?

New Post: Disable a node

craj7 — Fri, 12 Sep 2008 20:06:17 GMT

How can I disable/enable selected (or any specific) node?I tried IsEnabled=false but does not work.

New Post: Proble with tree inside TabItem

DevCorner — Thu, 11 Sep 2008 09:20:44 GMT

Fixed. Get changeset #17392

New Post: Proble with tree inside TabItem

scgm11 — Wed, 10 Sep 2008 01:41:22 GMT

ok, i get a demo of my problem is very simple, 2 tab items one treeview, at first everithing is ok but when you change tabitem and go back to de first the events fires twice.
I think is a bug of the tabitem what do you think??

SimpleTestProject